Standard lowand medium-power induction motor drives are based on the pulsewidth modulation (PWM) voltagesource inverter fed from a diode rectifier. The dual topology, based on the current-source inverter/rectifier structure is used in mediumand high-power applications. This paper analyzes the existing motor drives based on current-source topologies and proposes a control strategy that addresses...

This paper presents a new transformer based multilevel inverter, with a novel pulse width modulation scheme to achieve seven-level inverter output voltage. The proposed inverter switching pattern consists of three fundamental frequency sinusoidal reference signals with an offset value, and one high frequency triangular carrier signal. This switching scheme has been implemented using an 8-bit Xi...

The present publication is directed to utilize particle swarm optimization (PSO) algorithm based PI controller for adjusting the speed of brushless DC motor fed via four switch three phase inverter. inverter topology reduces cost and complexity drive system. High performance response during transient steady state conditions achieved by optimizing gains using POS algorithm. obtained results conf...

Fault-tolerant control of a three-phase inverter can be achieved by performing hardware reconfiguration the six-switch and (6S3P) topology to four-switch (4S3P) after detection localisation faulty phase. Together with reconfiguration, SVPWM algorithm must appropriately modified handle new 4S3P topology. The presented study focuses on diagnosing faults in two steps: fault localisation. Fault is ...

A Simulation and experimental implementation of Four Switch Three phase inverter (FSTPI) fed Induction Motor drive is presented in this paper. In this proposed approach the simulation of the system is carried out using MATLAB/Simulink and experimental work is carried out using Spartan-3 processor and Xilinx software. In the experimental work, Xilinx software is used to generate the PWM pulses f...

In this paper, an efficient control strategy for three-phase four-switch inverter-fed Brushless DC Motor (BLDCM) drives with trapezoidal back Electromotive Force (EMF) is proposed. the proposed approach, outer loop adjusting motor speed designed using Model Predictive Control (MPC) while inner based on a hysteresis controller regulates BLDC phase currents. To effectively adjust current of uncon...

The Class DE inverter offers high-efficiency power conversion under high operating frequency (megahertz order) with low switching noises and low switch voltage stress. It has been applied to dc/dc converters as high-density power sources. Conventional converters with the Class DE inverter are controlled by varying the operating frequency, the switch duty ratio or the phase difference with two i...