Title :
An analysis of voltage spike clamping circuits for current type PWM power converters
Author :
Sato, Yukihiko ; Kataoka, Teruo
Author_Institution :
Tokyo Inst. of Technol., Japan
Abstract :
An analysis is made of voltage spike clamping circuits containing a diode clipper for current-type pulse width-modulated (PWM) power converters, such as PWM rectifiers and PWM current-source inverters. The equivalent circuits and differential equations for the charging current of the voltage spike absorbing capacitor are derived. Expressions for the required capacitance and the required current rating of the discharge circuit are derived from them in simple forms suitable for use in design and are applied to experimental power converters with voltage spike clamping circuits. The analytical results are verified by experiments carried out on an experimental current-type converter/inverter system for a variable-speed AC drive.<>
Keywords :
invertors; power convertors; pulse width modulation; rectifying circuits; PWM; capacitance; charging current; converter/inverter system; current rating; current type pulse width modulated convertors; current-source inverters; diode clipper; discharge circuit; equivalent circuits; power converters; rectifiers; variable-speed AC drive; voltage spike absorbing capacitor; voltage spike clamping circuits; Clamps; Diodes; Equivalent circuits; Pulse circuits; Pulse inverters; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Rectifiers; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 1988. PESC '88 Record., 19th Annual IEEE
Conference_Location :
Kyoto, Japan
DOI :
10.1109/PESC.1988.18212
