Journal
IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume 33, Issue 4, Pages 3268-3275Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2017.2707583
Keywords
Common-mode voltage (CMV); neutral point clamped (NPC) converter; pulse width modulation (PWM)
Categories
Funding
- Ministry of Science and Technology [MOST-104-2221-E-007-045-MY3]
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Common-mode voltage output is closely associated with switching states in three-phase three-wire neutral point clamped converter. Detailed analysis shows avoiding redundant states can effectively improve the common-mode voltage, so this paper proposes a pulse width modulation (PWM) technique with zero redundant state to reduce the common-mode voltage output, and evaluates their performance with the conventional PWM schemes. This paper also takes the compensation of neutral point potential deviation into consideration. Laboratory test results are presented to verify the effectiveness of the proposed scheme.
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