A 2.5 kW cascaded Schwarz converter for 20 kHz power distributionBecause it avoids the high currents in a parallel loaded capacitor, the cascaded Schwarz converter should offer better component utilization than converters with sinusoidal output voltages. The circuit is relatively easy to protect, and it provides a predictable trapezoidal voltage waveform that should be satisfactory for 20-kHz distribution systems. Analysis of the system is enhanced by plotting curves of normalized variables vs. gamma(1), where gamma(1) is proportional to the variable frequency of the first stage. Light-load operation is greatly improved by the addition of a power recycling rectifier bridge that is back biased at medium to heavy loads. Operation has been verified on a 2.5-kW circuit that uses input and output voltages in the same range as those anticipated for certain future spacecraft power systems.
Document ID
19900049858
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Shetler, Russell E. (General Electric Co. Erie, PA, United States)
Stuart, Thomas A. (Toledo, University OH, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
Electronics And Electrical Engineering
Meeting Information
Meeting: PESC ''89 - Annual IEEE Power Electronics Specialists Conference