Parallel multi-inverter system and motor drive system using the

Details Parallel multi-inverter system and motor drive system using the Parallel multi-inverter system and motor drive system using the

1990-06-27

1991-05-14

Beha, Jr., William H.

Electric power conversion systems

Current conversion

Having plural converters for single conversion

363 40, 363 72, H02M 7521

Patent

active

050161580

ABSTRACT:
A parallel multi-inverter system including a plurality of inverters connected in parallel to each other through one or more parallel reactors, wherein output voltages of the inverters are controlled on the basis of the polarity of an output voltage command signal and a comparison result between a value obtained by converting the output voltage command signal into a positive one and a carrier signal to reduce harmonic components of the line-to-line voltages, and further two different switching modes to set the output voltage of the system zero are equally used to prevent a circulating current from flowing through the parallel reactors during each zero potential period of the output voltage of the system.

REFERENCES:
patent: 3876923 (1975-04-01), Humphrey et al.
patent: 3916290 (1975-10-01), Rao et al.
patent: 3979662 (1976-09-01), Klein

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