Title :
A control method for a high frequency link inverter using cycloconverter techniques
Author :
Muroyama, Seiichi ; Aoki, Tadahito ; YOtsumoto, Katsuichi
Author_Institution :
NTT Appl. Electron. Lab., Tokyo, Japan
Abstract :
The authors describe a novel control method for a high-frequency link inverter using cycloconverter techniques and discuss its output voltage characteristics. In this method, the cycloconverter converts a high-frequency voltage to a low-frequency voltage by operating in three modes: positive rectifying mode, negative rectifying mode, and free-wheeling mode. Pulse-width-modulation control is performed at the cycloconverter. Numerical analysis and experiments show that the output voltage can be proportionally controlled by a reference voltage and that the output harmonics can be decreased to a sufficiently low level. A surge reduction circuit is presented for the inverter. This circuit can effectively reduce the switching surge. A conversion efficiency of over 90% is obtained with an output power of 1 kW
Keywords :
cycloconvertors; invertors; pulse width modulation; voltage control; 1 kW; PWM control; control method; cycloconverter techniques; free-wheeling mode; harmonics; high frequency link inverter; negative rectifying mode; positive rectifying mode; switching surge reduction; Filters; Frequency conversion; Low voltage; Pulse circuits; Pulse width modulation inverters; Surge protection; Switches; Switching circuits; Turning; Voltage control;
Conference_Titel :
Telecommunications Energy Conference, 1989. INTELEC '89. Conference Proceedings., Eleventh International
Conference_Location :
Florence
DOI :
10.1109/INTLEC.1989.88330
