一种单相三电平SVPWM调制与载波SPWM内在联系

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Abstract For single phase three-level neutral-point-clamped (NPC)voltage source rectifiers: in order to reduce switching times and losses during communication, A single phase three-level space vector pulse width modulation(SVPWM) technique and a single phase unipolar three-level carrier sinusoidal PWM(TLC-SPWM) technique with zero-sequence voltage injection are proposed in this paper. The design method of SVPWM is shown in detail, and the selection method of zero-sequence voltage in TLC-SPWM is discussed in detail too. Theoretic analysis and calculation results show that the SVPWM method and TLC-SPWM method with zero-sequence voltage injection are the same PWM scheme essentially, and both of the implementing methods are different. The SVPWM and TLC-SPWM methods can effectively reduce switching times and losses during communication compared with traditional TCL-SPWM. Finally, Simulation model in Matlab/Simulink and a 1.3kW experimental prototype with TMS320F2812 controller are designed for the single phase three-level NPC rectifier. The simulation and experimental results verify the feasibility and effectiveness of the proposed SVPWM and neutral point controller.

Key words： Three-level neutral point voltage control SVPWM carrier-SPWM zero-sequence voltage injection

Received: 05 October 2010 Published: 20 March 2014

PACS:

TM921.45

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	Song Wensheng
	Feng Xiaoyun

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Song Wensheng,Feng Xiaoyun. Relationship Between Single Phase Three-Level SVPWM and Carrier SPWM[J]. Transactions of China Electrotechnical Society, 2012, 27(6): 131-138.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I6/131

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