Switched capacitor induction motor drive

Details Switched capacitor induction motor drive Switched capacitor induction motor drive

1986-06-18

1987-12-29

Wong, Peter S.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

363 37, 363 96, H02M 7515

Patent

active

047165154

ABSTRACT:
A switched capacitor, induction motor drive circuit is provided wherein a switched capacitor in parallel with the inductive motor load at each output terminal is provided for commutation or switching of the main output inverter elements thereby protecting the switching elements from excessive voltage during switching or commutation operation in combination with a unique switching control circuit which enables minimal voltage switching elements to be used and which eliminates the need for anti-parallel rectifiers in the inverter output stage. Alternate forms of the switching control circuit are disclosed. Regeneration induced power control circuits for dissipating or returning the power to the input lines are disclosed.

REFERENCES:
patent: 3308371 (1967-03-01), Studtmann, Jr.
patent: 3601683 (1971-08-01), Brown
patent: 4597039 (1986-06-01), Alexander

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