Four pole neutral-point clamped three phase converter with...

Details Four pole neutral-point clamped three phase converter with... Four pole neutral-point clamped three phase converter with...

2011-04-05

2011-04-05

Sterrett, Jeffrey L (Department: 2838)

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

C363S040000, C363S044000, C363S127000, C363S132000

Reexamination Certificate

active

07920393

ABSTRACT:
A four pole, three-phase, NPC converter that produces virtually no common mode voltage. The low common mode voltage output is achieved by constraining the switch states of the NPC converter. A fourth pole and associated control balance the upper and lower DC link voltages. The converter may be an inverter or a rectifier.

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