DESC:FIELD OF THE INVENTION

[0001] The present invention relates to the field of induction motors, and more particularly, to a system and method for improving starting characteristics of a single-phase induction motor.

BACKGROUND OF THE INVENTION

[0002] Single-phase induction motors are widely used in appliances such as fans, washing machines, air conditioners, and refrigeration systems, due to their simplicity, durability, and cost-effectiveness. Despite their extensive utility, these motors present certain limitations which primarily stem from their poor starting characteristics.

[0003] Single-phase induction motors inherently do not generate a rotating magnetic field, unlike their three-phase counterparts. Instead, they produce a pulsating magnetic field in the absence of an auxiliary winding. This is because the magnetic field produced by a single-phase alternating current does not rotate, hence it does not induce the starting torque required for the initial motor startup. Therefore, to initiate the startup of the motor, additional components such as a capacitor, auxiliary winding, or a starting switch are typically required to produce a phase shift, resulting in a rotating magnetic field.

[0004] The issue of starting single-phase induction motors introduces complications that affect their overall performance. Firstly, the requirement of additional starting mechanisms adds to the complexity of the motor design, potentially increasing its cost and maintenance requirements. Moreover, these starting mechanisms often need to be disengaged once the motor reaches a certain speed, thus requiring additional control systems.

[0005] Secondly, single-phase induction motors often suffer from poor starting torque. The starting torque is critical as it determines the load that the motor can handle at startup. Insufficient starting torque can lead to unsuccessful motor startup when under load, thereby limiting the application areas of these motors.

[0006] Additionally, the power factor at startup is typically low, leading to a high inrush current that can cause stress on the electrical power grid and the motor itself. This can also contribute to higher energy consumption, inefficient operation, and potential wear and tear, thereby reducing the lifespan of the motor.

[0007] Lastly, the direction of rotation is not inherently defined in single-phase induction motors and is typically dictated by the auxiliary mechanism employed. This means the motor could potentially start in the wrong direction if not properly controlled, leading to operational issues.

[0008] To create a rotating magnetic field, and thus start the motor, various techniques are used:

[0009] Split-Phase Motor: This method employs two windings - a start winding and a run winding. The start winding has a higher resistance and smaller reactance than the run winding, leading to a phase shift between the currents in the two windings and creating a rotating magnetic field. Once the motor reaches a certain speed, a centrifugal switch disconnects the start winding. The downside of this approach is that the starting torque is relatively low, making it suitable for light-load applications like fans and blowers.

[0010] Capacitor Start Motor: Similar to a split-phase motor, a capacitor start motor uses a capacitor in series with the start winding to create a greater phase shift and thus a higher starting torque. The start winding and the capacitor are disconnected by a centrifugal switch once the motor reaches a certain speed. This design provides higher starting torque but at increased cost and complexity due to the capacitor.

[0011] Capacitor Start-Capacitor Run Motor: This is a variant of the capacitor start motor, but it includes two capacitors. One capacitor is used for starting (and is disconnected after starting), while the other remains in the circuit during normal operation, improving performance and efficiency. The downside of this technology is the increased complexity and cost due to the additional capacitor.

[0012] Permanent-Split Capacitor (PSC) Motor: This design uses a single, permanently connected capacitor in series with the start winding. It provides a smooth start but with lower starting torque, making it suitable for applications like fans and pumps where high starting torque is not required. The PSC motor is simpler and more reliable than designs with centrifugal switches or multiple capacitors.

[0013] Shaded Pole Motor: This is the simplest and least expensive design, using a shorted turn (the 'shade' coil) to create a phase shift and a rotating field. The starting torque is very low, making this design suitable only for very light-load applications, such as small fans or for driving mechanical indicators.

[0014] The drawback common to all the above designs is that they rely on mechanical or electrical components to create the phase shift required for starting, adding to the cost, complexity, and potential failure modes of the motor. They also typically provide lower starting torque than equivalent three-phase motors.

[0015] Accordingly, in light of the foregoing difficulties, there exists a need for innovative solutions that can mitigate the aforementioned issues, improve the starting performance, and overall operational efficiency of single-phase induction motors.

[0016] Limitations and disadvantages of conventional and traditional approaches will become apparent to one of ordinary skill in the art, through comparison of described systems with some aspects of the present invention, as set forth in the remainder of the present application and with reference to the drawings.

SUMMARY OF THE INVENTION

[0017] A system and method are disclosed which provide a solution for improving the starting characteristics of a single-phase induction motor as shown in and/or described in connection with, at least one of the figures.

[0018] The system comprises a parameter detection unit, a decision logic unit, and a flux control unit. The parameter detection unit monitors at least one electrical parameter and the load of the motor. The decision logic unit determines an optimum speed of the motor based on the magnetic flux between the main winding and the one or more auxiliary windings, the electrical parameter, and the load, and compares this with the actual speed of the motor. The flux control unit dynamically adjusts the magnetic flux based on the comparison result until the motor reaches the optimum speed. The method involves corresponding steps. This enhances the starting characteristics and the overall performance of the motor.

[0019] These and other features and advantages of the present invention may be appreciated from a review of the following detailed description of the present invention, along with the accompanying figures in which like reference numerals refer to like parts throughout.

BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG. 1 is a schematic diagram illustrating the components and interactions of the system for improving starting characteristics of a single-phase induction motor in accordance with an exemplary embodiment of the present invention.

[0021] FIG. 2 is a schematic representation of a stator of a single-phase induction motor in accordance with an exemplary embodiment of the invention.

[0022] FIG. 3 is a schematic representation of a rotor of a single-phase induction motor in accordance with an exemplary embodiment of the invention.

[0023] FIG. 4 illustrates a flowchart of a method for improving starting characteristics of a single-phase induction motor in accordance with an exemplary embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION
[0024] The following implementations described may be found in the disclosed system and method for improving the starting characteristics of a single-phase induction motor.

[0025] FIG. 1 is a schematic diagram illustrating the components and interactions of a system for improving starting characteristics of a single-phase induction motor in accordance with an exemplary embodiment of the present invention. Referring to FIG. 1, there is shown a motor control system 102 interacting with and controlling a single-phase induction motor 100. The motor control system 102 includes a memory 104, a processor 106, a communications unit 108, a parameter detection unit 110, a decision logic unit 112, and a flux control unit 114.

[0026] The single-phase induction motor 100 incorporating the motor control system 102 includes a stator with a main winding (M) and one or more auxiliary windings (A), and a rotor. The main winding (M) generates a rotating magnetic field upon receiving a main AC power supply, while the rotation of the rotor induces an alternating electromotive force (EMF) in the one or more auxiliary windings (A). The alternating EMF produced in the one or more auxiliary windings (A) is fed back to the main winding (M) throughout the complete rotation cycle of the rotor via an electronic control unit (ECU), which comprises the motor control system 102 for improving the motor 100’s starting characteristics. Structural aspects of the single-phase induction motor 100 are further described in conjunction with FIG. 2 and FIG. 3.

[0027] The motor control system 102 for improving starting characteristics of the single-phase induction motor 100 comprises several interconnected components namely the memory 104, the processor 106, the communications unit 108, the parameter detection unit 110, the decision logic unit 112, and the flux control unit 114.

[0028] The memory 104 may comprise suitable logic, and/or interfaces, that may be configured to store instructions (for example, computer readable program code) that can implement various aspects of the present invention.

[0029] The processor 106 may comprise suitable logic, interfaces, and/or code that may be configured to execute the instructions stored in memory 104 to implement various functionalities of the motor control system 102 in accordance with various aspects of the present invention. The processor 106 may be further configured to communicate with various components of the motor control system 102 via the communications unit 108.

[0030] The communications unit 108 may comprise suitable logic, interfaces, and/or code that may be configured to transmit data between modules, engines, databases, memories, and other components of the motor control system 102 for use in performing the functions discussed herein. The communications unit 108 may include one or more communication types and utilizes various communication methods for communication within the motor control system 102.

[0031] The parameter detection unit 110 may comprise suitable logic, interfaces, and/or code that may be configured to monitor at least one electrical parameter including, but not limited to, voltage, current, and frequency, as well as the load of the single-phase induction motor 100. The parameter detection unit 110 is configured to receive data related to these parameters and the load from one or more sensors.

[0032] The decision logic unit 112 may comprise suitable logic, interfaces, and/or code that may be configured to determine the optimum speed of the single-phase induction motor 100 based on the magnetic flux between the main winding (M) and the one or more auxiliary windings (A), the monitored electrical parameters, and the load. The decision logic unit 112 is configured to determine the optimum speed using various factors, including, but not limited to, the magnetic flux, electrical parameters, load, slip, and number of pole pairs.

[0033] To achieve the desired speed, the decision logic unit 112 compares the optimum speed with the actual speed of the motor 100 and determines a comparison result. The actual speed may be determined by using speed sensors or any other suitable means.

[0034] The flux control unit 114 may comprise suitable logic, interfaces, and/or code that may be configured to dynamically adjust the magnetic flux between the main winding (M) and the one or more auxiliary windings (A), based on the comparison result determined by the decision logic unit 112, until the single-phase induction motor 100 reaches the optimum speed. This adjustment optimizes the single-phase induction motor 100’s starting characteristics.

[0035] In accordance with an embodiment, the magnetic flux adjustment is achieved by computing the magnetic flux using the electrical parameters and a constant factor. The constant factor is determined based on the physical properties of the single-phase induction motor 100, such as, but not limited to, its size, winding material, and stator core. The flux control unit 114 is configured to dynamically adjust the magnetic flux by adjusting the constant factor, taking into account variations in the load. The flux control unit 114 boosts the magnetic flux by adjusting the constant factor when the comparison result indicates that the actual speed is less than the optimum speed. Conversely, the flux control unit 114 decreases the magnetic flux by adjusting the constant factor when the comparison result indicates that the actual speed is greater than the optimum speed.

[0036] In accordance with an exemplary embodiment, a boosting methodology for boosting the magnetic flux between the main winding (M) and one or more auxiliary windings (A) of the single-phase induction motor 100 is disclosed, based on monitoring and understanding the values related to load, voltage, current, and frequency. The algorithm enables the single-phase induction motor 100 to achieve the optimum speed, and once that speed is reached, the main winding (M) takes over the primary function of running the induction motor 100, and the one or more auxiliary windings (A) switch to a secondary function.

[0037] The following algorithm has been implemented for achieving dynamic boosting of the magnetic flux based on the output load:

[0038] Step 1: Input the required parameters,
• Load (L)
• Voltage (V)
• Current (I)
• Frequency (f)

[0039] Step 2: Calculate the magnetic flux (F) between the main winding (M) and the one or more auxiliary windings (A) using the input parameters,
F = k * (V * I * f),
where k is a constant factor determined by the induction motor 100’s physical properties.

[0040] Step 3: Monitor the load on the induction motor 100 and adjust the magnetic flux accordingly,
• If the load increases, increase the magnetic flux by adjusting the constant factor k.
• If the load decreases, decrease the magnetic flux by adjusting the constant factor k.

[0041] Step 4: Calculate the optimum speed (N_opt) of the induction motor 100 based on the magnetic flux and input parameters:
N_opt = f * (1 - s) * (60 / p),
where s is the slip and p is the number of pole pairs.

[0042] Step 5: Compare the actual speed (N_act) of the induction motor 100 with the optimum speed (N_opt),
• If N_act < N_opt, increase the magnetic flux by adjusting the constant factor k
• If N_act > N_opt, decrease the magnetic flux by adjusting the constant factor k

[0043] Step 6: Monitor the induction motor 100’s speed and performance,
• If the induction motor 100’s reaches the optimum speed (N_act = N_opt), cut off the one or more auxiliary windings (A).
• If the induction motor 100’s speed drops below the optimum speed after the one or more auxiliary windings (A) have been cut off, reconnect the one or more auxiliary windings (A) and repeat steps 3-6.

[0044] Step 7: Continue to monitor and adjust the magnetic flux based on the induction motor 100’s load, voltage, current, and frequency for optimal performance.

[0045] The motor control system 102 of the induction motor 100 always monitors and processes the input parameters and thus would calculate the amount of boosting required by the flux between the main winding (M) and the one or more auxiliary windings (A). The motor control system 102 can monitor the speed and performance of the induction motor 100 in real-time to make the necessary adjustments for optimal operation.

[0046] The disclosed method for improving the starting characteristics of the single-phase induction motor 100 involves the steps of monitoring the electrical parameters and load, determining the optimum speed, comparing it with the actual speed, and dynamically adjusting the magnetic flux until the motor 100 reaches the optimum speed. The method encompasses the use of sensors to monitor the electrical parameters and load, computation of the optimum speed based on various factors, determination of the actual speed using speed sensors, and adjustment of the magnetic flux by modifying the constant factor based on the comparison result.

[0047] It should be noted that the disclosed system, method, and motor are presented as examples and various modifications and variations are possible without departing from the scope of the invention. The attached drawings provide a visual representation of the system, but the invention is not limited to the specific embodiments depicted.

[0048] FIG. 2 is a diagrammatic representation of a stator of a single-phase induction motor in accordance with an exemplary embodiment of the invention. Referring to FIG. 2, there is shown a stator 200 of the single-phase induction motor 100, which includes a frame or yoke 202, a stator core 204, stator slots 206 and stator windings 208.

[0049] The frame or yoke 202 is made of close-grained alloy cast iron or aluminium alloy and forms an integral part of the stator 200. The main function of the frame or yoke 202 is to provide a protective cover for other sophisticated components or parts of the single-phase induction motor 100. The stator core 204 is made up of laminations which include the stator slots 206 that are punched from sheets of electrical grade steel. The space provided in the stator slots 206 is sufficient to accommodate the stator windings 208 that include one or more sets of winding wires. In related aspects, the space provided in the stator slots 206 may be more than in conventional slots. The winding wires are insulated wires. The size of the stator slots 206 may be adjusted and maintained for uniform distribution of the stator windings 208.

[0050] The space provided in the stator slots 206 is configured to accommodate the one or more sets of winding wires which include the main winding (M) which carries the supply power/energy (RMF) required for rotating the rotor and the one or more additional windings (A) which is used for transmission of the power (alternating EMF) induced in the one or more additional windings (A) while the rotor is rotating. The energy produced during the rotation of the rotor meets part of the energy requirement of the single-phase induction motor 100, as the induction motor 100 partly functions as a generator.

[0051] Further, the stator 200 includes rabbets and bore that are machined carefully to ensure uniformity of air gap. The shaft and bearings used in the stator 200 of the induction motor 100 are like any other conventional induction motor. A ball bearing of suitable size is used to reduce rotational friction and support radial and axial loads. A fan is provided to enable adequate circulation of air to cool the stator windings 208. The heat produced in the induction motor 100 is comparatively less because of less current consumption and due to mutually opposite working of the stator windings 208 namely, the main winding (M) corresponding to supply power/energy required for rotating the rotor and the one or more additional windings (A) corresponding to transmission of the power generated in the one or more additional windings (A) while the rotor is rotating. Therefore, the size of the cooling fan can also be reduced, thus saving some energy on that count. The bearings are housed at the end of the shaft and are fixed to the frame or yoke 202.

[0052] A number of poles and a number of windings that will be required for the stator 200 is decided based on the speed of the induction motor 100 as the synchronous speed is directly proportional to frequency and inversely proportional to the number of poles according to the equation, Ns = 120f/P, wherein ‘Ns’ is the synchronous speed, ‘f’ is the frequency and ‘P’ is the number of poles.

[0053] FIG. 3 is a diagrammatic representation of a rotor of a single-phase induction motor in accordance with an exemplary embodiment of the invention. Referring to FIG. 3, there is shown a rotor 300 which includes steel laminations 302, aluminum bars 304, a rotor shaft 306 and end rings 308.

[0054] In this particular embodiment, the rotor 300 is a squirrel cage type rotor. The rotor 300 includes a cylinder of the steel laminations 302, with the aluminum bars 304 for separating the steel laminations 302 of the rotor 300. In some embodiments, the rotor 300 may include highly conductive metal (typically aluminum or copper) embedded into its surface, parallel or approximately parallel to the rotor shaft 306 and close to the surface of the rotor 300. At both ends of the rotor 300, rotor conductors are short-circuited by the continuous end rings 308 of similar materials to that of the rotor conductors. The rotor conductors and their end rings 308 by themselves form a closed circuit.

[0055] When an alternating current is run through the stator windings 208, the RMF is produced. This induces a current in the rotor windings, which produces its own magnetic field. The interaction of the magnetic fields produced by the stator and rotor windings produces a torque on the rotor 300.

[0056] The RMF induces voltage in the rotor bars which causes short-circuit currents to start flowing in the rotor bars. These rotor currents generate their self-magnetic field which interacts with the RMF of the stator 200. The rotor field will try to oppose its cause, which is the RMF. Therefore, the rotor 300 starts following the RMF. The moment the rotor 300 catches up with the RMF, the rotor current drops to zero as there is no more relative motion between the RMF and the rotor 300. Hence, when the rotor 300 experiences zero tangential force, the rotor 300 decelerates for the moment. After deceleration of the rotor 300, the relative motion between the rotor 300 and the RMF is reestablished, and consequently, a rotor current is induced again. Thus, the tangential force for rotation of the rotor 300 is restored again, and the rotor 300 starts rotating again following the RMF. In this way, the rotor 300 maintains a constant speed which is less than the speed of the RMF or the synchronous speed (Ns).

[0057] FIG. 4 illustrates a flowchart of a method for improving starting characteristics of a single-phase induction motor in accordance with an exemplary embodiment of the present invention. Referring to FIG. 4, there is shown a flowchart 400 depicting a method for improving starting characteristics of the single-phase induction motor 100.

[0058] At 402, monitor, by a parameter detection unit, at least one electrical parameter and load of the single-phase induction motor. The method involves monitoring at least one electrical parameter and load of the motor by the parameter detection unit 110. The monitoring includes receiving data related to the electrical parameter and load from one or more sensors. The electrical parameter may include at least one of voltage, current, and frequency.

[0059] At 404, determine, by a decision logic unit, an optimum speed of the single-phase induction motor based on one of a magnetic flux between the main winding and the one or more auxiliary windings, the at least one electrical parameter and the load. The method includes determining an optimum speed based on the magnetic flux between the main winding (M) and the one or more auxiliary windings (A), the electrical parameter, and the load, by the decision logic unit 112. The determining includes computing the optimum speed based on the magnetic flux, the electrical parameter, the load, the slip, and the number of pole pairs.

[0060] The determining also includes computing the magnetic flux between the main winding (M) and the one or more auxiliary windings (A) based on the electrical parameter and a constant factor. The constant factor is determined based on one or more physical properties of the motor 100. These physical properties may include at least one of the size of the induction motor 100, the winding material, and the stator core.

[0061] At 406, compare, by the decision logic unit, the optimum speed of the single-phase induction motor with an actual speed of the single-phase induction motor to obtain a comparison result. The method includes comparing the optimum speed with the actual speed to obtain a comparison result by the decision logic unit 112. The comparing includes determining the actual speed based on data from speed sensors.

[0062] At 408, dynamically adjust, by a flux control unit, the magnetic flux between the main winding and the one or more auxiliary windings based on the comparison result, until the single-phase induction motor reaches the optimum speed. The method includes dynamically adjusting, by the flux control unit 114, the magnetic flux between the main winding (M) and the one or more auxiliary windings (A) based on the comparison result until the induction motor 100 reaches the optimum speed.

[0063] The adjusting includes dynamically adjusting the magnetic flux by adjusting the constant factor, based on the variation in the load. The adjusting may involve boosting the magnetic flux by adjusting the constant factor when the comparison result shows that the actual speed is less than the optimum speed. Alternatively, the adjusting may involve decreasing the magnetic flux by adjusting the constant factor when the comparison result shows that the actual speed is greater than the optimum speed.

[0064] The present invention is advantageous in that it provides a system and method for improving the starting characteristics of a single-phase induction motor. The system and method dynamically adjust the magnetic flux between the main winding and the one or more auxiliary windings to achieve optimum speed. This ensures efficient operation of the motor and extends its lifetime.

[0065] This invention introduces a novel approach for improving the starting characteristics of single-phase induction motors. Conventional methods of starting single-phase motors often involve auxiliary components, such as additional windings, resistances, or capacitors, to generate a rotating magnetic field necessary for startup. These traditional methods often result in reduced starting torque and efficiency and can add complexity and potential failure modes to the system.

[0066] This new system improves upon these techniques by facilitating a self-starting torque in the single-phase induction motor, similar to the natural starting behavior of three-phase induction motors. This system eliminates the need for any additional auxiliary electrical devices typically used for initiating the motor start. As a result, this innovative design not only simplifies the overall system but also enhances the lifespan of the motor by reducing potential points of failure.

[0067] Furthermore, the system is capable of reaching maximum efficiency in a fraction of the input voltage cycle, which is a marked improvement over conventional single-phase induction motor designs. Thus, the system promotes more efficient motor operation right from the start, leading to overall energy savings and better performance.

[0068] In summary, the proposed system provides a substantial improvement over conventional single-phase motor designs by emulating three-phase starting characteristics, increasing starting torque, reducing startup time, eliminating the need for additional components, and ultimately enhancing the longevity of the motor.

[0069] Those skilled in the art will realize that the above recognized advantages and other advantages described herein are merely exemplary and are not meant to be a complete rendering of all of the advantages of the various embodiments of the present invention.

[0070] The present invention may be realized in hardware, or a combination of hardware and software. The present invention may be realized in a centralized fashion, in at least one computer system, or in a distributed fashion, where different elements may be spread across several interconnected computer systems. A computer system or other apparatus/devices adapted to carry out the methods described herein may be suited. A combination of hardware and software may be a general-purpose computer system with a computer program that, when loaded and executed on the computer system, may control the computer system such that it carries out the methods described herein. The present invention may be realized in hardware that comprises a portion of an integrated circuit that also performs other functions. The present invention may also be realized as a firmware which form part of the media rendering device.

[0071] The present invention may also be embedded in a computer program product, which includes all the features that enable the implementation of the methods described herein, and which when loaded and/or executed on a computer system may be configured to carry out these methods. Computer program, in the present context, means any expression, in any language, code or notation, of a set of instructions intended to cause a system with information processing capability to perform a particular function either directly, or after either or both of the following: a) conversion to another language, code or notation; b) reproduction in a different material form.

[0072] In the foregoing specification, specific embodiments of the present invention have been described. However, one of ordinary skill in the art appreciates that various modifications and changes can be made without departing from the scope of the present invention. Accordingly, the specification and figures are to be regarded in an illustrative rather than a restrictive sense, and all such modifications are intended to be included within the scope of the present invention. ,CLAIMS:1. A system for improving starting characteristics of a single-phase induction motor, the single-phase induction motor comprising a main winding and one or more auxiliary windings in the stator, the system comprising:
a parameter detection unit configured to monitor at least one electrical parameter and load of the single-phase induction motor;
a decision logic unit configured to:
determine an optimum speed of the single-phase induction motor based on one of a magnetic flux between the main winding and the one or more auxiliary windings, the at least one electrical parameter and the load; and
compare the optimum speed of the single-phase induction motor with an actual speed of the single-phase induction motor to obtain a comparison result; and
a flux control unit configured to dynamically adjust the magnetic flux between the main winding and the one or more auxiliary windings based on the comparison result, until the single-phase induction motor reaches the optimum speed.

2. The system as claimed in claim 1, wherein the parameter detection unit is configured to receive data related to the at least one electrical parameter and the load from one or more sensors.

3. The system as claimed in claim 1, wherein the at least one electrical parameter comprises at least one of a voltage, a current and a frequency.

4. The system as claimed in claim 1, wherein the decision logic unit is configured to compute the optimum speed of the single-phase induction motor based on: the magnetic flux, the at least one electrical parameter, the load, the slip and the number of pole pairs.

5. The system as claimed in claim 1, wherein the decision logic unit is configured to determine the actual speed of the single-phase induction motor based on data from speed sensors.

6. The system as claimed in claim 1, wherein the decision logic unit is configured to compute the magnetic flux between the main winding and the one or more auxiliary windings based on the at least one electrical parameter and a constant factor, wherein the constant factor is determined based on one or more physical properties of the single-phase induction motor, wherein the one or more physical properties is at least one of a size of the single-phase induction motor, winding material and stator core.

7. The system as claimed in claim 6, wherein the flux control unit is configured to dynamically adjust the magnetic flux between the main winding and the one or more auxiliary windings by adjusting the constant factor, based on variation in the load.

8. The system as claimed in claim 7, wherein the flux control unit is configured to dynamically boost the magnetic flux by adjusting the constant factor, when the comparison result is indicative of the actual speed being less than the optimum speed.

9. The system as claimed in claim 7, wherein the flux control unit is configured to dynamically decrease the magnetic flux by adjusting the constant factor, when the comparison result is indicative of the actual speed being greater than the optimum speed.

10. A single-phase induction motor, comprising:
a stator comprising a main winding (M) for generating a rotating magnetic field (RMF) upon providing a main AC power supply to the main winding (M) of the stator; and
a rotor disposed to rotate relative to the main winding (M) of the stator due to the RMF, the stator further comprising one or more auxiliary windings (A), wherein rotation of the rotor induces an alternating EMF in the one or more auxiliary windings (A) of the stator, wherein the alternating EMF produced in the one or more auxiliary windings (A) is fed back to the main winding (M) of the stator throughout the complete rotation cycle of the rotor through an electronic control unit (ECU) coupled to the stator, the ECU comprising a system as claimed in claim 1.

11. A method for improving starting characteristics of a single-phase induction motor, the single-phase induction motor comprising a main winding and one or more auxiliary windings in the stator, the method comprising:
monitoring, by a parameter detection unit, at least one electrical parameter and load of the single-phase induction motor;
determining, by a decision logic unit, an optimum speed of the single-phase induction motor based on one of a magnetic flux between the main winding and the one or more auxiliary windings, the at least one electrical parameter and the load;
comparing, by the decision logic unit, the optimum speed of the single-phase induction motor with an actual speed of the single-phase induction motor to obtain a comparison result; and
dynamically adjusting, by a flux control unit, the magnetic flux between the main winding and the one or more auxiliary windings based on the comparison result, until the single-phase induction motor reaches the optimum speed.

12. The method as claimed in claim 11, wherein the monitoring comprises receiving, by the parameter detection unit, data related to the at least one electrical parameter and the load, from one or more sensors.

13. The method as claimed in claim 11, wherein the at least one electrical parameter comprises at least one of a voltage, a current and a frequency.

14. The method as claimed in claim 11, wherein the determining comprises computing, by the decision logic unit, the optimum speed of the single-phase induction motor based on: the magnetic flux, the at least one electrical parameter, the load, the slip and the number of pole pairs.

15. The method as claimed in claim 11, wherein the comparing comprises computing, by the decision logic unit, the actual speed of the single-phase induction motor based on data from speed sensors.

16. The method as claimed in claim 11, wherein the determining comprises computing, by the decision logic unit, the magnetic flux between the main winding and the one or more auxiliary windings based on the at least one electrical parameter and a constant factor, wherein the constant factor is determined based on one or more physical properties of the single-phase induction motor, wherein the one or more physical properties is at least one of a size of the single-phase induction motor, winding material and stator core.

17. The method as claimed in claim 16, wherein the adjusting comprises dynamically adjusting, by the flux control unit, the magnetic flux between the main winding and the one or more auxiliary windings by adjusting the constant factor, based on variation in the load.

18. The method as claimed in claim 17, wherein the adjusting comprises dynamically boosting, by the flux control unit, the magnetic flux by adjusting the constant factor, when the comparison result is indicative of the actual speed being less than the optimum speed.

19. The method as claimed in claim 17, wherein the adjusting comprises, dynamically decreasing, by the flux control unit, the magnetic flux by adjusting the constant factor, when the comparison result is indicative of the actual speed being greater than the optimum speed.