Title :
Current-source parallel-resonant DC/AC inverter with transformer
Author :
Kazimierczuk, Marian K. ; Cravens, R. Obert C, II
Author_Institution :
Dept. of Electr. Eng., Wright State Univ., Dayton, OH, USA
fDate :
3/1/1996 12:00:00 AM
Abstract :
This paper gives the theory and experimental results for a current-source parallel-resonant inverter with a transformer used to change voltage levels and provide isolation. The analysis is performed in the frequency domain using Fourier series techniques to predict output power, efficiency, DC-to-AC voltage transfer function, and component voltage and current stresses. The inverter consists of two switches, a large choke inductor, a transformer, and a parallel-resonant circuit. The magnetizing inductance of the transformer is used as the inductance of the parallel-resonant circuit, thereby requiring one less component. Each switch consists of a MOSFET in series with a diode. The MOSFETs have their sources grounded so there is no need for a complicated gate-drive circuit. An inverter was designed and constructed. The DC input voltage was 156 V and the output voltage was a sine wave with a peak value of 224 V at an operating frequency of 50 kHz. The output power at full load was 100 W
Keywords :
DC-AC power convertors; Fourier analysis; Fourier series; circuit testing; field effect transistor switches; frequency-domain analysis; power MOSFET; power field effect transistors; power semiconductor switches; power transformers; resonant power convertors; switching circuits; transfer functions; 100 W; 156 V; 224 V; 50 kHz; DC input voltage; DC-to-AC voltage transfer function; Fourier series; MOSFET switches; choke inductor; component current stress; component voltage stress; current-source parallel-resonant inverter; efficiency; frequency domain; full load; isolation; output power; transformer; voltage levels control; Circuits; Frequency domain analysis; Inductance; Inductors; Inverters; Magnetic analysis; Performance analysis; Power generation; Switches; Voltage;
Journal_Title :
Power Electronics, IEEE Transactions on
