NDLI: Common-mode voltage mitigation with a predictive control method considering dead time effects of three-phase voltage source inverters

Content Provider	IET Digital Library
Author	Kwak, Sangshin Mun, Sungki
Abstract	This study proposes a technique to mitigate common-mode voltages with dead time effects taken into account in three-phase voltage source inverters (VSIs), on the basis of finite-set model predictive control methods. The effects of dead time on common-mode voltage in three-phase VSIs controlled by the model predictive control method are investigated. On the basis of the investigation, a common-mode voltage reduction method is proposed, which is not affected by the inevitable dead time of the VSIs. The proposed method pre-excludes, from the candidates for future vectors, those voltage vectors which can increase the common-mode voltage during the dead time. In addition, when zero vectors are chosen as an optimal vector from the standpoints of current errors, each zero vector is replaced with two non-zero vectors in opposite directions, so as not to deteriorate current performance by simply excluding the zero vectors. On the basis of the proposed pre-selective technique, the proposed method can restrict the common-mode voltage within ±V dc /6 of the three-phase VSIs, whereas the common-mode voltages of the conventional method vary within ±V dc/2. Simulation and experimental results are presented to verify the effectiveness of the proposed method.
Starting Page	1690
Ending Page	1700
Page Count	11
ISSN	17554535
Volume Number	8
e-ISSN	17554543
Issue Number	Issue 9, Sep (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/8/9
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2014.0884
Journal	IET Power Electronics
Publisher Date	2015-04-28
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Common Mode Voltage Mitigation Common Mode Voltage Reduction Method Control of Electric Power System Current Error Dead Time Effect Finite Set Model Predictive Control Method Nonzero Vector Optimal Control Optimal Vector Predictive Control PWM Invertors Three Phase VSI Control Voltage Control Voltage Source Inverter Voltage Vector Zero Vector
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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