Title :
Advanced circuit of five-level PWM inverter with an inductive load
Author :
Ohsato, Masato H. ; Inarida, S. ; Kimura, Gunji ; Shioya, Mitsuo
Author_Institution :
Fac. of Technol., Tokyo Metropolitan Univ., Japan
fDate :
28 Oct-1 Nov 1991
Abstract :
The authors present a type of PWM (pulse-width-modulated) inverter for a small-scale photovoltaic power system. It has five voltage levels, including the earth level, which is composed of charging two storage battery units in series or parallel combination. The waveform of the output voltage is more sinusoidal than that of the conventional PWM inverter. In the case of an inductive load, however, the waveform shows some deteriorations. The operation of this PWM inverter with an inductive load is analyzed. An advanced circuit is devised to eliminate these deteriorations. It is verified that the experimental results agree well with the theoretical results obtained using FFT (fast Fourier transform) analysis. A resonant-type five-level PWM inverter is also presented
Keywords :
battery chargers; fast Fourier transforms; invertors; load (electric); network analysis; photovoltaic power systems; pulse width modulation; FFT; battery chargers; charging; earth level; fast Fourier transform; five-level PWM inverter; inductive load; network analysis; photovoltaic power system; secondary cells; sinusoidal; storage battery; Batteries; Circuits; Earth; Fast Fourier transforms; Photovoltaic systems; Pulse inverters; Pulse power systems; Pulse width modulation inverters; Resonance; Voltage;
Conference_Titel :
Industrial Electronics, Control and Instrumentation, 1991. Proceedings. IECON '91., 1991 International Conference on
Conference_Location :
Kobe
Print_ISBN :
0-87942-688-8
DOI :
10.1109/IECON.1991.239290
