A generalized discontinuous PWM based neutral point voltage balancing method for three-level NPC voltage source inverter with switching losses reduction

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Abstract

In order to control the neutral point voltage of inverter with discontinuous PWM (DPWM), this paper proposed a generalized discontinuous PWM (GDPWM) based neutral point voltage balancing method for three level neutral point clamped (NPC) voltage source inverter (VSI). Firstly, a triangle carrier based (TCB-GDPWM) is proposed. Secondly, the affection on neutral point voltage for the modulation wave are analyzed. Base on the analysis, a bang-bang control is adept to control the neutral point voltage via changing the polarity of the certain part of the common mode voltage (CMV). Finally, the proposed method is verified by simulation and experiment. The results show that the propose method has good performance at neutral point voltage control and switching losses reduction.
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Detaljer

In order to control the neutral point voltage of inverter with discontinuous PWM (DPWM), this paper proposed a generalized discontinuous PWM (GDPWM) based neutral point voltage balancing method for three level neutral point clamped (NPC) voltage source inverter (VSI). Firstly, a triangle carrier based (TCB-GDPWM) is proposed. Secondly, the affection on neutral point voltage for the modulation wave are analyzed. Base on the analysis, a bang-bang control is adept to control the neutral point voltage via changing the polarity of the certain part of the common mode voltage (CMV). Finally, the proposed method is verified by simulation and experiment. The results show that the propose method has good performance at neutral point voltage control and switching losses reduction.
OriginalsprogEngelsk
TitelProceedings of the 2017 IEEE Applied Power Electronics Conference and Exposition (APEC)
Antal sider5
ForlagIEEE Press
Publikationsdatomar. 2017
Sider1816-1820
Artikelnummer7930945
ISBN (Elektronisk)9781509053667
DOI
StatusUdgivet - mar. 2017
PublikationsartForskning
Peer reviewJa
Begivenhed2017 IEEE Applied Power Electronics Conference and Exposition (APEC) - Tampa Convention Center, Tampa, FL, USA
Varighed: 26 mar. 201730 mar. 2017

Konference

Konference2017 IEEE Applied Power Electronics Conference and Exposition (APEC)
LokationTampa Convention Center
LandUSA
ByTampa, FL
Periode26/03/201730/03/2017
ID: 260307786