Title :
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
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;
Conference_Titel :
Power Conversion Conference, 1993. Yokohama 1993., Conference Record of the
Conference_Location :
Yokohama, Japan
Print_ISBN :
0-7803-0471-3
DOI :
10.1109/PCCON.1993.264252
