DV/DT limiting of inverter output voltage

Details DV/DT limiting of inverter output voltage DV/DT limiting of inverter output voltage

1995-01-18

1997-05-27

Krishnan, Aditya

Electric power conversion systems

Current conversion

Including automatic or integral protection means

H02P 534

Patent

active

056337906

ABSTRACT:
A voltage rise limiting circuit (10) for use in conjunction with an inverter-driven induction motor (14). The circuit (10) includes capacitors (C4, C5, C6) connected in a delta configuration, with each node (64, 66, 68) coupled between an inductor (L7,L8,L9) and an input line of a diode bridge rectifier. The rectifier clamps positive voltage levels, putting trapped energy back into the dc inverter bus.

REFERENCES:
patent: 4843515 (1989-06-01), Richman
patent: 5461556 (1995-10-01), Horie et al.
patent: 5483140 (1996-11-01), Hess et al.

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