A Space Vector Modulation Scheme of the Quasi-Z-Source Three-Level T-Type Inverter for Common-Mode Voltage Reduction

The conventional three-level inverter suffers the limitation of voltage buck operation. In order to give both voltage buck and boost operation capability, the quasi-Z-source three-level T-type inverter (3LT 2 I) has been proposed. This paper further proposes a space vector modulation (SVM) scheme fo...

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Veröffentlicht in:IEEE transactions on industrial electronics (1982) 2018-10, Vol.65 (10), p.8340-8350
Hauptverfasser: Qin, Changwei, Zhang, Chenghui, Chen, Alian, Xing, Xiangyang, Zhang, Guangxian
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container_title IEEE transactions on industrial electronics (1982)
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creator Qin, Changwei
Zhang, Chenghui
Chen, Alian
Xing, Xiangyang
Zhang, Guangxian
description The conventional three-level inverter suffers the limitation of voltage buck operation. In order to give both voltage buck and boost operation capability, the quasi-Z-source three-level T-type inverter (3LT 2 I) has been proposed. This paper further proposes a space vector modulation (SVM) scheme for the quasi-Z-source 3LT 2 I to reduce the magnitude and slew rate of common-mode voltage (CMV). By properly selecting the shoot-through phase, the shoot-through states are inserted within zero vector in order not to affect the active states and output voltage. Doing so, the CMV generated by the quasi-Z-source 3LT 2 I is restricted within one-sixth of dc-link voltage, and voltage boosting and CMV reduction can be simultaneously realized. In addition, high dc-link voltage utilization can be maintained. The proposed scheme has been verified in both simulations and experiments. Comparisons are conducted with the conventional SVM method and the phase-shifted sinusoidal PWM method.
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In order to give both voltage buck and boost operation capability, the quasi-Z-source three-level T-type inverter (3LT 2 I) has been proposed. This paper further proposes a space vector modulation (SVM) scheme for the quasi-Z-source 3LT 2 I to reduce the magnitude and slew rate of common-mode voltage (CMV). By properly selecting the shoot-through phase, the shoot-through states are inserted within zero vector in order not to affect the active states and output voltage. Doing so, the CMV generated by the quasi-Z-source 3LT 2 I is restricted within one-sixth of dc-link voltage, and voltage boosting and CMV reduction can be simultaneously realized. In addition, high dc-link voltage utilization can be maintained. The proposed scheme has been verified in both simulations and experiments. 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In order to give both voltage buck and boost operation capability, the quasi-Z-source three-level T-type inverter (3LT 2 I) has been proposed. This paper further proposes a space vector modulation (SVM) scheme for the quasi-Z-source 3LT 2 I to reduce the magnitude and slew rate of common-mode voltage (CMV). By properly selecting the shoot-through phase, the shoot-through states are inserted within zero vector in order not to affect the active states and output voltage. Doing so, the CMV generated by the quasi-Z-source 3LT 2 I is restricted within one-sixth of dc-link voltage, and voltage boosting and CMV reduction can be simultaneously realized. In addition, high dc-link voltage utilization can be maintained. The proposed scheme has been verified in both simulations and experiments. 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subjects Boosting
Common-mode voltage (CMV) reduction
Electric potential
Inverters
Modulation
Network topology
quasi-Z-source
Slew rate
Space vector modulation
Support vector machines
Switches
three-level T-type inverter (3LT<inline-formula xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <tex-math notation="LaTeX"> ^2</tex-math> </inline-formula>I)
Topology
voltage boosting
Voltage reduction
title A Space Vector Modulation Scheme of the Quasi-Z-Source Three-Level T-Type Inverter for Common-Mode Voltage Reduction
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