High power factor, high frequency single stage single switch resonant inverter for the application of high frequency applications is presented in this paper. The power circuit is designed with a power factor corrector with single-switch current-fed high frequency resonant inverter. Number of switches used in conventional ballast circuits is reduced in single switch approach. SEPIC (Single ended...

To fulfill the challenging demands of the growing grid, new concepts of the inverters are needed. In this project a reduced switch modular inverter design is detailed. A reduced switch modular inverter design is presented for a modern power system which inputs power from both AC and DC Renewable Sources. The modular inverter is the combination of both three phase inverter and three phase invert...

Cascaded Hybrid MultiLevel Inverter (CHMLI) is an attractive topology for high voltage DC-AC conversion. This paper focuses on a single-phase five-level inverter with reduced number of switches. The inverter consists of a full bridge inverter and an auxiliary circuit with four diodes and a switch. The inverter produces output voltage in five levels: zero, +0.5Vdc, +Vdc, -0.5Vdc and –Vdc.. A nov...

A new family of matrix converters is introduced, that employs relatively simple voltage-clamped buses and can generate multilevel voltage waveforms of arbitrary magnitude and frequency. The basic configuration includes a nine-switch matrix that uses four-quadrant switch cells. Each four-quadrant switch cell resembles a full-bridge inverter and can assume three voltage levels during conduction. ...

In this paper speed control of three phase bldc motor using four switch inverter is proposed to simplify the structure of the conventional six switch inverter. It is an effective try on reducing cost. A single current sensor control strategy is used. PID controller is used by the outer loop to develop the performance of speed control. The outer speed loop is designed to improve the static and d...

This paper summarizes recently developed soft-switching inverters and proposes two alternative options for electric propulsion drives. The newly developed soft-switching inverter employs an auxiliary switch and a resonant inductor per phase to produce a zero voltage across the main switch so that the main switch can turn on at the zero-voltage condition. Both the auxiliary switch and the resona...

Safe operation of electric motor drives is of prime research interest in various industrial applications. This paper presents a new fault diagnosis system for open circuit switch faults in three phases Voltage Source Inverter (VSI) drive of the permanent magnet Brushless DC (BLDC) motors. The proposed fault diagnosis system is capable of detecting as well as identifying the faulty switch in the...

In this paper, two single phase ac loads are supplied with one inverter and reduced switch count topologies are introduced in this paper. It has three switch single leg structures. This single leg inverter is functionally comparable to half bridge inverter working independently though with a less number of semiconductor switch and hence control and gate drive circuit components. This three swit...