Electric power conversion systems – Current conversion – Including automatic or integral protection means
Patent
1986-01-15
1989-06-27
Salce, Patrick R.
Electric power conversion systems
Current conversion
Including automatic or integral protection means
363 58, 361 90, 361 91, 361111, H02H 7122
Patent
active
048435333
ABSTRACT:
A transient protection circuit for an inverter has a rectifier capable of supplying direct current from an alternating current power source, where protection is provided against a voltage transient in the AC power source. A DC bus is fed by the rectifier. A bus capacitor is connected across the DC bus. Solid state switches are connected to the DC bus for supplying alternating current to a load. The DC bus voltage is sensed. In response to a transient rise in the DC bus voltage, a resistor is connected across the bus capacitor to provide a discharge path, the solid state switches are disconnected from the DC bus, and after the transient dies away from the DC bus, the solid state switches are reconnected to the bus and the discharge resistor is disconnected from across the bus capacitor.
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Horne G. Marshall
Roof Richard W.
Guttman Richard T.
Johnston A. Sidney
Salce Patrick R.
Square D Company
Todd Voeltz Emanuel
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