Title :
Power factor improvement of PWM matrix converter using intermediate voltage
Author :
Oyama, Jun ; Higuchi, Tsuyoshi ; Tsukamoto, Ryuta ; Yamada, Eiji ; Koga, Takashi
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Nagasaki Univ., Japan
Abstract :
The authors previously proposed a new control strategy for a matrix power converter, which made it possible to generate the output voltage of 0.866 times the supply voltage and to eliminate voltage and current spikes inevitable in conventional switching operations (1989). The switches in the phase with the lowest command were controlled to connect the output terminal to the lowest supply voltage. The switches in another two phases were switched between the highest voltage and the lowest voltage of the three phase power supply and PWM controlled by output voltage command. Here, the authors extend the control strategy to use the intermediate supply voltage and improve the input current waveforms and the power factor. The new control scheme is examined and confirmed by experiments.<>
Keywords :
power convertors; power factor correction; power supplies to apparatus; voltage control; PWM; current spikes; input current waveforms; matrix power converter; power factor; switching; three phase power supply; voltage control; voltage spikes; Circuits; Computer aided manufacturing; Control systems; Matrix converters; Pulse width modulation; Pulse width modulation converters; Reactive power; Switches; Toy manufacturing industry; 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.1993.264169