Title :
Design of a single PWM section shunt switching unit for high power space system
Author :
Lee, Dong H. ; Cho, B.H. ; Patil, A.R. ; Lee, F.C.
Author_Institution :
Bradley Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
A single pulse-width-modulation (PWM) section shunt switching unit (SSU) for multi-kilowatt space power systems is presented. Due to the output capacitance of the solar cell, the PWM section in the array draws a pulsating current, which must be suppressed with a large filter inductor for each section. The proposed design uses a single designated PWM section with a filter. This leads to drastic reduction in size and weight of the SSU compared to the existing designs for the space station and Earth Observation System (EOS). A prototype has been designed and tested
Keywords :
PWM power convertors; design engineering; field effect transistor switches; photovoltaic power systems; power MOSFET; power field effect transistors; power semiconductor switches; solar cell arrays; solar cells; space vehicle power plants; switching circuits; MOSFET power convertors; filter inductor; output capacitance; pulsating current; single PWM section shunt switching unit; solar cell; space power systems; Capacitance; Filters; Inductors; Photovoltaic cells; Pulse power systems; Pulse width modulation; Satellite ground stations; Shunt (electrical); Space stations; Space vector pulse width modulation;
Conference_Titel :
Power Electronics Specialists Conference, 1995. PESC '95 Record., 26th Annual IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-2730-6
DOI :
10.1109/PESC.1995.474805
