An electronically commutated motor to run a ceiling fan consisting of 1) a three phase Brushless DC motor without embedded rotor position sensors; 2) an embedded electronic controller consisting of a switched mode power supply with integrated active power factor correction  an inverter  and a micro-controller based ...

A speed command scheme for a BLDC motor based ceiling fan consisting of 1) a wall-mounted power on/off switch; 2) an electronic controller consisting of a switched mode power supply, an inverter, and a micro-controller based control system with firmware to control the motor. The electronic controller is embedded wit...

The present invention discloses a system and method that adapts variations in the back EMF value of the BLDC motor [203] and achieves the desired speed. When the maximum speed is selected [208] for the first time after power ON [207], the microcontroller sets the PWM duty value to a predefined-minimum duty value the...

Energy conservation is pervading every spere of applications in the world. Alternate technologies are being adopted to existing applications to save energy. BLDC motor technology is one such technology which is being slowly and steadeily adopted into air moving, pumping and compressor applications inpl...

The present invention discloses a speed control system for brushless DC (BLDC) motor based ceiling fan using wall mounted capacitive step-type fan regulator (100). The desired speed can be controlled by changing the knob of the capacitive step-type fan regulator (100) to the corresponding position. Whenever the user...

ABSTRACT The present invention relates to twisted blades for ceiling fans whose cross section is thin airfoil and which is run by brushless DC (BLDC) electric motor or induction motor and is capable of delivering more air at slow speed. The blades have chord length which is tapered down from hub to the tip. The thi...

The present invention discloses a decorative device (3) which is removably mountable on ceiling fan blades (2). The decorative device (3) comprises an upper side (3a), a bottom side (3b). The upper side (3a) is fixed to the blades (2) includes an adhesive layer. The adhesive layer is covered by a protective cover (3...

The present invention discloses a system and method that controls the BLDC motor based fan speed using capacitive step type fan regulator [115] position changes in real time. The capacitive step type fan regulator [115] position is identified as break when the divided down rectified voltage [109] is in the range of ...

The present invention discloses a system [100] and method [200] & [300] for controlling permanent magnet synchronous motor (PMSM) [109] at standstill condition with a single hall sensor [108] using a microcontroller [102]. The microcontroller [102] preprogrammed with firmware logic determines the initial rotor posit...

The present disclosure relates to a multiphase inverter with symmetrically placed half bridges and method thereof. A circuit 200 for an inverter unit to control the operation of an inverter. A Direct Current to Direct Current (DC-DC) convertor 302 that is configured to regulate the Direct Current (DC) current. An an...

Disclosed is a system (10) for the controlled operation of an electric fan (120) and one or more electrical appliances to facilitate intelligent automation. The system comprises an electronic controller board (100) embedded within the electric fan motor (108), a wireless communication module (105), an IR transmitter...