TECHNICAL FIELD

The present invention relates to the field of voltage converters_ In particular, it relates to a DC-DC converter and method thereof. Further, relates to a DC-DC converter and method to up the voltage the said converter.

BACKGROUND

BACKGROUND

Background description includes information that may be useful in understanding the present disclosure.

an admission that any of the information provided herein is prior art or relevant to disclosure, O that any publication specifically or implicitly referenced is art.

prior Voltage converters are widely used in photovoltaic (PV) generating systems as an interface between PV module and the load. Generally; solar PV module can only generate low DC output voltage. Thus, to step-up the PV module output voltage, power electronic interfaces power converters such as transformers, voltage multiplier cell, etc. is a compulsory. But, challenges such as increased size, weight; and efficiency losses arise when transformers are utilized to elevate voltages for charging DC buses or PV systems.

scientists are employing different approaches to eliminate the use of transformers.

Most of the modern boost converters are synthesized using the following voltage gain extension techniques such as voltage multiplier cell (VMC), switched inductor; single switch higher order boost converters, and coupled inductor: The main drawbacks of the said following voltage extension techniques is the usage of increased number of components, particularly power-dissipating elements like diodes. Furthermore, the achieved by these methods does not scale effectively with the duty Also, continuously increasing the number of components to achieve higher is not a practical solution: gain gain cycle.

gains A DC-DC converter is an electronic circuit that facilitates the conversion of direct current (DC) from one voltage level to another: There are several types of DC-DC converter which can regulate the unregulated DC voltage by means of increasing Or decreasing the value of DC output voltage.

cuk converter , Single Ended Primary Inductor Converter (SEPIC), and flyback _ boost converter: The DC-DC boost converter will boost up O step up the output voltage to be greater than input voltage.

When choosing a DC-DC boost converter; it is imperative that several criteria to be satisfied. These criteria include high efficiency, high reliability, low conduction losses, low switching losses and low cost.

Due to this, scientists worldwide are continually researching and inventing new topologies for DC-DC converters. It increases the total number of DC-DC converters that can be used for variety of power-conversion operations One of the existing arts_ authored by V. Karthikeyan et al _ entitled High step-up gain dc-dc converter with switched capacitor and regenerative boost configuration for solar PV applications' provides DC-DC converter with the observed maximum efficiency of 95.60 % at 480 W. But a better merit is required for more suitable solar PV applications.

prior Hence, there is a need for a substantially higher voltage DC-DC boost convertor topology which is more suitable for solar PV applications.

OBJECTS OF THE PRESENT DISCLOSURE

OBJECTS OF THE PRESENT DISCLOSURE

Some of the objects of the present disclosure, which at least one embodiment herein satisfies are as listed herein below.

It is an object of the present disclosure to provide circuit and method thereof: It is another object of the present disclosure to provide a DC-DC converter circuit and method thereof, which offers a more efficient and simplified solution for achieving high voltage gain: It is another object of the present disclosure to provide a DC-DC converter circuit and method thereof; reduces reliance on transformers.

It is another object of the present disclosure to provide a DC-DC converter circuit and method thereof; which provides a including an exceptional value of 400 at a duty ratio of 0.7.

It is another object of the present disclosure to provide a DC-DC converter circuit and method which does not incorporate coupling elements or isolation circuits hence, has compact design and minimizes losses caused by electromagnetic interference EMD)_ It is another object of the present disclosure to provide a DC-DC converter circuit and method thereof, which utilizes oly two low-side switches, making it well-suited for PV-based applications with a single ground reference.

It is another object of the present disclosure to provide a DC-DC converter circuit and method thereof; which offers excellent line and voltage regulation, coupled with efficient scaling with to different voltage requirements in various applications gain It is another object of the present disclosure to provide a DC-DC converter circuit and method thereof; which eliminate the need for transformers and employing topology with quintic gain, the invention aims to improve power conversion efficiency, reduce size and weight, and simplify the overall system design.

SUMMARY

In an aspect; the at least one single boost converter (110) comprises of one or more switching element (110-1), oe Or more inductor (110-2), one or more diode (110-3), and one O more capacitor (110-4) coupled to the at least one input voltage terminal (110-5).

In an aspect, the at least one single-switch quantic boost converter (120) comprises of the one more switching element (120-14), the one Or more inductor (120-1), (120-5), (120-9), and (120-13), the one or more diode (120-4), (120-7), (120-8), (120-11), (120-12) and (120-16), and the one or more capacitor (120-2), (120-6), (120-10), (120-15) coupled to the at least one output voltage terminal (120-17).

In an aspect, the one or more switching element (110-1) and (120-14) comprises at least one of a metal oxide transistor (MOSFET) In an aspect, the DC-DC converter (110) yields a voltage of at least 400 at a predefined duty ratio, wherein the predefined duty ratio pertains to at least 0.7 .

gain In an aspect; a method to step-up output voltage using DC-DC converter circuit (100), the method comprising steps of cascading, the first stage comprises of the at least one single boost converter (110) with the second stage comprises of the at least one single-switch quantic boost converter 120). Further, receiving, an input voltage at the at least one input voltage terminal (110-5). Further, switching on_ the one Or more switching element (110-1) and (120-14) to execute an operation mode 1, wherein the operation mode 1 is configured to reduce input current level and provide initial voltage gain: Furthermore, switching off, the one or more switching element (110-1) and (120-14) to execute an operation mode 2_ wherein the operation mode 2 is configured to increase the voltage Finally, converting, the received input voltage to a rectified output voltage to give an output voltage at the at least one output voltage terminal (120-17).

gain.

BRIEF DESCRIPTION OF DRAWINGS

BRIEF DESCRIPTION OF DRAWINGS

The accompanying drawings are included to provide a further understanding of the present disclosure, and are incorporated and constitute a of this specification.

The drawings illustrate exemplary embodiments of the present disclosure, and together with the description, serve to explain the principles of the present disclosure.

in, part In the figures, similar components, andlor features may have the same reference label: various components of the same type may be distinguished by following the reference label with a second label that distinguishes among the similar components used in the specification, the description is applicable to any one of the similar components having the same second reference label.

FIG .

1 illustrates an exemplary circuit diagram of the DC-DC converter (100) , in accordance with an embodiment of the present disclosure.

FIG. 2 illustrates equivalent circuit of the DC-DC converter (100) during ON of the operation mode 1, in accordance with an embodiment of the present disclosure.

period FIG. 3 illustrates equivalent circuit of the DC-DC converter (100) during OFF period of the operation mode 2, in accordance with an embodiment of the present disclosure.

DETAILED DESCRIPTION

in the specific examples are reported as precisely as practicable.

The recitation of ranges of values herein is merely intended to serve as a shorthand method of referring individually to each separate value falling within the range. Unless otherwise indicated herein, individual value is incorporated into the specification as if it were individually recited herein.

each Various aspects of the present disclosure are described with respect to FIG 1-3.

In an aspect, the at least one Single boost converter (110) comprises of one Or more switching element (110-1), one Or more inductor (110-2), one Or more diode (110-3), and one or more capacitor (110-4) coupled to the at least one input voltage terminal (110-5).

In an aspect, the at least one single-switch quantic boost converter (120) comprises of the one or more switching element (120-14), the one or more inductor (120-1), (120-5), (120-9), and (120-13), the one or more diode (120-3), (120-4), (120-7), (120-8), (120-11), (120-12) and (120-16), and the one or more capacitor (120-2), (120-6), (120-10), (120-15) coupled to the at least one output voltage terminal (120-17).

In an aspect, the one or more switching element (110-1) and (120-14) comprises at least one of a metal oxide transistor (MOSFET) In an aspect, the DC-DC converter (110) yields a voltage of at least 400 at a predefined duty ratio, wherein the predefined duty ratio pertains to at least 0.7 .

gain In an aspect; a method to step-up output voltage using DC-DC converter circuit (100), the method comprising steps of cascading, the first stage comprises of the at least one single boost converter (110) with the second stage comprises of the at least one single-switch quantic boost converter 120). Further, receiving, an input voltage at the at least one input voltage terminal (110-5). Further, switching on_ the one Or more switching element (110-1) and (120-14) to execute an operation mode 1, wherein the operation mode 1 is configured to reduce input current level and provide initial voltage gain: Furthermore, switching off, the one or more switching element (110-1) and (120-14) to execute an operation mode 2_ wherein the operation mode 2 is configured to increase the voltage Finally, converting, the received input voltage to a rectified output voltage to give an output voltage at the at least one output voltage terminal (120-17).

gain.

FIG.

1 illustrates an exemplary circuit diagram of the DC-DC converter (100), in accordance with an embodiment of the present disclosure.

In an embodiment; referring to FIG. 1 the DC-DC converter circuit (100) comprising: a first stage comprises of at least one single boost converter (110) coupled to at least one input voltage terminal (110-5), and configured to reduce input current level and provide initial voltage gain; and a second stage comprises of at least one single-switch quantic boost converter (120), coupled with the at least one single boost converter (110) and at least one output voltage terminal (120-17), and configured to increase quintic voltage gain.

In an embodiment, referring to FIG.

1 the DC-DC converter circuit (100)_ uses at least 20 circuit components which comprises the one Or more switching elements 110-1 and 120-14; the one Or more inductors 110-2, 120-1,120-5,120-9_ and 120-13; the one or more capacitors 110-4, 120-2,120-6, 120-10, and 120-15; the one or more diodes 110-3, 120-3,120-4,120-7, 120-8,120-11,120-12 and 120 16 with two terminals one for input voltage and one for output voltage.

FIG. 2 illustrates equivalent circuit of the DC-DC converter circuit (100) during ON period of the operation mode 1, in accordance with an embodiment of the present disclosure.

In an embodiment; referring to FIG. 2_ the one or more switching elements 110-1 and 120-14 are operated simultaneously giving rise to two possible modes of operation with the following valid assumptions: all the semiconductor devices are ideal, all the capacitors are pre-charged and the converter operates in continuous conduction mode (CCM): In an embodiment; referring to FIG. 2, the operation mode 1 (0

The one Or more inductor 110-2 is charged by the supply through the one more switching element 110-1.

The one or more switching element 120-14 is conducting consequently the one more diode 120-16 is reversed biased and hence the one or more capacitor 120-15 supplies the load. The one or more diodes 120-3,120-7, and 120-11 are forward biased as the cathodes are grounded by the one or more switching element 120-14 and with the anodes at a higher potential .

enabled by the one or more diodes 120-3,120-7, 120-11 and the one or more switching element 120-14.

At the end of this mode of operation, the inductors are charged to the maximum energy levels and reach their maximum current values.

path FIG .

3 illustrates equivalent circuit of the DC-DC converter circuit (100) during OFF period of the operation mode 2, in accordance with an embodiment of the present disclosure.

In an embodiment, referring to FIG. 3, the operation mode 2 (t

The energy stored in the one Or more inductor 110-2 forward bias the one more diode 110-3. The energy stored in the one Or more inductor 110-2 is or more capacitor 110-4.

The one or more inductor 120- 1,120-5, and 120-9 forward bias the one Or more diodes 110-3, 120-4,120-8, and 120-12 due to their electrical inertia.

The energy is transferred from the one more inductors 120-1,120-5, and 120-9 to the one OT more capacitor 120-2,120-6 and 120-10. Energy stored in the inductor 120-13 forward biases the diode 120-16 supplying the load and charging the output capacitor 120-15. At the end of this mode of operation, the energy stored in the one more inductor reaches the minimum value and the next cycle commences at t2 when the one more switching element 110-1 and 120-14 are turned ON again: In an embodiment, the DC-DC converter circuit comprising: a first stage comprises of at least one single boost converter 110) coupled to at least one input voltage terminal (110-5), and configured to reduce input current level and provide initial voltage A second stage comprises of at least one single-switch quantic boost converter (120), coupled with the at least one single boost converter (110) and at least one output voltage terminal (120-17), and configured to increase quintic voltage The voltage conversion ratio of the proposed DC-DC converter (100) is obtained from the first stage comprises of at least one single boost converter (110) coupled to at least one input voltage terminal (110-5) gain.

gain.

terminal (120-17), found by applying voltage second voltage from voltage across the one or more inductors 120-1,120-5,120-9, and 120-13 during and Toff Ton In an embodiment, the overall voltage of the proposed converter is obtained as a product of both gains achieved in both the stages.

gain In an embodiment; when the one or more switching elements 110-1 and 120-14 are operated at the same duty ratio quintic voltage gain.

In an embodiment; the DC-DC converter circuit (100) achieves a voltage of 33.33 at a conservative and safe duty ratio.

The maximum achievable of the DC-DC converter (100), which occurs at a ratio of 0.7_ reaches an exceptionally high value of 400.

This high gain demonstrates the remarkable capabilities of the DC-DC converter (100) in efficiently stepping up the input voltage By providing such a wide range of achievable gains, the DC-DC converter (100) has the flexibility in adapting to different voltage requirements in various applications gain gain duty In an embodiment, workable ranges for all the circuit parameters involved is given in Table 1.

Table 1: workable ranges for all the circuit parameters

If the specification states a component or feature may , can scould or ~might be included or have a characteristic, that particular component O feature is not required to be included or have the characteristic.

As used in the description herein and throughout the claims that follow_ the meaning of *a; an; and *the includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of in includes *in and on unless the context clearly dictates otherwise.

Moreover; in interpreting the specification, all terms should be interpreted in the broadest possible manner consistent with the context: In particular, the terms comprises and should be interpreted as referring to elements, components, or steps in a non-exclusive manner, indicating that the referenced elements, components, Or steps may be present, or utilized, or combined with other elements, components, Or steps that are not expressly referenced.

Where the specification claims refer to at least one of something selected from the A, B, the text should be interpreted as requiring only one element from the group, not A plus N, or B plus N, etc_ While the foregoing describes various embodiments of the disclosure, other and further embodiments of the disclosure may be devised without departing from the basic scope thereof. The scope of the disclosure is determined by the claims that follow.

ADVANTAGES OF THE PRESENT DISCLOSURE

ADVANTAGES OF THE PRESENT DISCLOSURE

The present disclosure provides DC-DC converter circuit and method thereof, which offers a more efficient ad simplified solution for achieving high voltage gain.

The present disclosure simplifies the voltage step-up process and reduces reliance on transformers.

The present disclosure achieves a substantially higher voltage gain with significantly fewer circuit components The present disclosure provides a wide range of achievable including an exceptional value of 400 at & duty ratio of 0.7.

The present disclosure utilizes only two low-side switches, making it well- suited for PV-based applications with a single ground reference.

The present disclosure offers excellent line and voltage regulation, coupled with efficient scaling with the duty ratio.

We Claim:

We Claim:

A Direct Current (DC-DC) converter circuit (100), the DC-DC converter circuit comprising: first stage comprises of at least one single boost converter (110) coupled to at least one input voltage terminal (110-5), and configured to reduce input current level and provide initial voltage gain; and second stage comprises of at least one single-switch quantic boost converter (120), coupled with the at least one single boost converter (110) and at and configured to increase quintic voltage gain.

2 The DC-DC converter circuit (100) as claimed in claim 1, wherein the at least one single boost converter (110) comprises of one or more switching element (110-1), one Or more inductor (110-2), one Or more diode (110-3), and one or more capacitor (110-4) coupled to the at least one input voltage terminal (110-5).

3_ The DC-DC converter circuit (100) aS claimed in claim 1, wherein the at least one single-switch quantic boost converter (120) comprises of the one more switching element (120-14), the one or more inductor (120-1), (120-5), (120-9), and (120-13), the one or more diode (120-3), (120-4), (120-7), (120-8)_ (120-11), (120-12) and (120-16), and the one or more capacitor (120-2), (120-6), (120-10), (120-15) coupled to the at least one output voltage terminal (120-17).

4 The DC-DC converter circuit (100) as claimed in claim 1, wherein the one or more switching element (110-1) and (120-14) comprises at least one of a metal oxide semiconductor field effect transistor (MOSFET) 5 The DC-DC converter circuit (100) as claimed in claim 1 wherein the DC-DC converter (110) yields a voltage of at least 400 at a predefined duty ratio, wherein the predefined duty ratio pertains to at least 0.7.

6 A method to step-up output voltage using DC-DC converter circuit (100), the method comprising steps of: 0_ the method comprising steps of: cascading; comprises of the at least one single boost converter (110) with the second stage comprises of the at least one single-switch quantic boost converter (120); receiving, an input voltage at the at least oe input voltage terminal (110- 5); switching 0, the one O more switching element (110-1) and (120-14) to execute an operation mode 1, wherein the operation mode 1 is configured to reduce input current level and provide initial voltage gain; switching off, the oe or more switching element (110-1) and (120-14) to execute an operation mode 2, wherein the operation mode 2 is configured to increase the voltage gain; and con verting, the received input voltage to a rectified output voltage to give an output voltage at the at least one output voltage terminal (120-17).

cascading; the first stage comprises of the at least one single boost converter (110) with the stage comprises of the at least one single-switch quantic boost converter (120); second receiving, an input voltage at the at least one input voltage terminal (110- receiving, an input voltage at the at least one input voltage terminal (110- 5); switching 0, the oe or more switching element (110-1) and (120-14) to execute an operation mode 1, 1 is configured to reduce input current level and provide initial voltage gain; switching off, the one or more switching element (110-1) and (120-14) to execute an operation mode 2, wherein the operation mode 2 is configured to increase the voltage gain; and switching off, the one or more switching element (110-1) and (120-14) to execute an operation mode 2, wherein the operation mode 2 is configured to increase the voltage gain; and converting, the received input voltage to a rectified output voltage to give an output voltage at the at least one output voltage terminal (120-17) converting, the received input voltage to a rectified output voltage to give an output voltage at the at least one output voltage terminal (120-17).

ABSTRACT

DIRECT CURRENT (DC-DC) CONVERTER CIRCUIT, AND METHOD

THEREOF

Present invention discloses a voltage converter. Particularly, DC-DC converter circuit, and method thereof.

In particular, the invention discloses a DC-DC converter and method to step up the voltage using the said converter: The DC-DC converter comprising: a first stage comprises of at least one single boost converter (110) to at least one input voltage terminal (110-5), and configured to reduce input current level and provide initial voltage gain; and a second stage with the at least one single boost converter (110) and at least one output voltage terminal (120-17), and configured to increase quintic voltage Further, the invention discloses an efficient way to simplify the voltage step-up process and reduces reliance on transformers providing a substantially higher voltage with significantly fewer circuit components_ coupled gain.