Abstract: Variation of switching frequency over the entire operating speed range of an induction motor (IM) drive is the major problem associated with conventional two-level three-phase hysteresis ...

Abstract: It is well understood that variable frequency drives (VFDs) can cause overvoltage up to twice the DC bus voltage (2 pu, where 1 per unit is the DC bus voltage) at the machine winding ...

Microchip’s AT9933 is a variable frequency PWM controller IC, designed to control a LED lamp driver using a low-noise boost-buck topology. The device is ideally used for LED lamps and other LED ...

A PWM circuit works by making a square wave with a variable on-to-off ratio; the average ‘on’ time may be varied from zero to 100%. In this manner, a variable amount of power is transferred to the ...

This project is a simple, variable-frequency sine wave generator built on the Arduino platform. It uses Pulse-Width Modulation (PWM) to produce a digital approximation of a sine wave, which is then ...

For our project, we needed to generate two pwm signal with 55% duty cycle and a phase shift of 180 degrees. We wanted a powerful microcontroller and hence we went with stm32. We also wanted to have ...