Position Sensorless Control of DC Brushless Motor using Current-Source PWM Inverter.

Sensorless Control of a Brushless DC Motor

This paper uses a new position sensor less drive for brushless DC (BLDC) motors. In conventional sensor less control methods such as the back-EMF detection method, the performance is high only at a high speed range due to the fact that the magnitude of the back-EMF is dependent on the rotor speed. A solution is derived that estimates the rotor position by using an unknown input observer over a ...

A Simple Position Sensorless Control Strategy for Radial-Flux Brushless DC Motor Drives Using Single Current Sensor

Reducing the cost of the motor drive is desirable for low cost applications. A simple and cost-effective position sensorless control for radial-flux permanent magnet brushless DC (BLDC) motor drives using single current sensor is proposed in this paper. It is based on the generation of quasi-square current waveforms, using only one current controller for the three phases. Unlike the conventiona...

Digital Implementation of PWM Techniques for Two-phase Eight-switch Inverter fed Brushless DC Motor Drives

This paper reports an investigation of pulse width modulation (PWM) techniques fo r two-phase brushless DC (BLDC) motors fed by a two-phase eight-switch inverter in a fan a pplication. The three-phase BLDC motor is widely applied in industry; however, a lower-cost t wo-phase BLDC motor and drive circuit has been greatly in demand in recent years. In this p aper, we introduce a mathematical mode...

AVR194: Brushless DC Motor Control using ATMega32M1

Brushless Dc Motor Speed Control Using Microcontroller

The hardware project is designed to control the speed of a BLDC motor using closed loop control technique. BLDC motor has various application used in industries like in drilling, lathes, spinning, electric bikes etc. The speed control of the DC motors is very essential. This proposed system provides a very precise and effective speed control system. The user can enter the desired speed and the ...