Simple structure and control method for a neutral-point-clamped PWM inverter

Author

Rojas, Roberto ; Ohnishi, Tokuo ; Suzuki, Takayuki

Author_Institution

Fac. of Eng., Tokushima Univ., Japan

fYear

1993

fDate

19-21 April 1993

Firstpage

26

Lastpage

31

Abstract

A new configuration for a neutral point clamped PWM inverter and its control strategy is proposed. The proposed configuration consists of an auxiliary circuit with four switching devices and a single full-bridge inverter. The control method is based on closed-loop regulation of the instantaneous line-to-line output voltages. The proposed scheme is simple, has fast response, and is effective for reducing the size of the DC-link capacitors. The performance of the system is verified by computer simulation and by experiment.<>

Keywords

closed loop systems; digital simulation; electrical engineering computing; invertors; pulse width modulation; switching circuits; voltage control; DC-link capacitors; auxiliary circuit; closed-loop regulation; computer simulation; control method; full-bridge inverter; instantaneous line-to-line output voltages; neutral-point-clamped PWM inverter; switching devices; Capacitors; Computer simulation; Control systems; Insulated gate bipolar transistors; Pulse inverters; Pulse width modulation; Pulse width modulation inverters; Switching circuits; Thyristors; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Conversion Conference, 1993. Yokohama 1993., Conference Record of the

Conference_Location

Yokohama, Japan

Print_ISBN

0-7803-0471-3

Type

conf

DOI

10.1109/PCCON.1993.264252

Filename

264252