Electric power conversion systems – Current conversion – With condition responsive means to control the output...
Patent
1994-10-24
1996-02-13
Wong, Peter S.
Electric power conversion systems
Current conversion
With condition responsive means to control the output...
363 44, H02M 7155
Patent
active
054916240
ABSTRACT:
The present invention converts an alternating current input into a direct current output by switching a current load at high speeds to create a voltage envelope having a maximum allowed voltage and a minimum allowed voltage. Complementary switching elements are employed to take advantage of both the positive and negative portions of an AC cycle. Load switching is arranged so that the current vector which represents the load is nearly coincident with the voltage vector which represents the power source. The system can operate in an open loop mode at a constant frequency, in a closed loop mode, or in a hysteresis mode. During open loop operation, the voltage envelope is not rigidly defined as the switching frequency remains constant. During hysteresis mode control, the voltage envelope remains fixed and the current switching frequency varies.
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Micro Linear Brochure (Phase Modulation/Soft Switching Controller, pp. 1-12).
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Design Considerations for High-Voltage High-Power Full-Bridge Zero-Voltage-Switched PWR Converter.
Levran Alexander
Mabboux Henri
Nowosielski Joseph M.
Rajagopalan Ramamoorthy
Ton-That Giao M.
Berhane Adolf
Femal Michael J.
Graefe Richard J.
Henricks James A.
Square D Company
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