EPE Association: EPE 2011 - LS3d: Topic 06: Converter Control, Sets and Modulation Strategies

EPE 2011 - LS3d: Topic 06: Converter Control, Sets and Modulation Strategies
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2011 ECCE Europe - Conference > EPE 2011 - Topic 06: Modulation Strategies and Specific Control Methods for Static Converters > EPE 2011 - LS3d: Topic 06: Converter Control, Sets and Modulation Strategies

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   A New Carrier-Based PWM Strategy with Minimum Output Current Ripple for Five-Phase Inverters
By Angelo TANI, Luca ZARRI, Michele MENGONI, Domenico CASADEI, Giovanni SERRA [View]
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Abstract: In this paper a new PWM strategy which minimizes the output current ripple for five-phase inverters is analytically determined. The optimization procedure is applied in each switching period, therefore its validity is not restricted to sinusoidal operations. The effectiveness of the proposed PWM strategy is proved by numerical simulations and experimental tests.

   Analytical Evaluation of Switching Characteristics in Five-Phase Drives with Discontinuous Space Vector Pulse Width Modulation Techniques
By Joel PRIETO, Federico BARRERO, Sergio TORAL, Martin JONES, Emil LEVI [View]
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Abstract: This paper deals with flux harmonic distortion factor (HDF) and current ripple analysis for variousdiscontinuous space vector PWM (SVPWM) techniques, applicable in conjunction with five-phasetwo-level inverter-fed ac motor drives. The analysis is based on the application of the recentlydeveloped polygon approach for multiphase systems. The results are compared throughout with thecorresponding continuous SVPWM techniques. Two different SVPWM methods, based on differentselections of the active vectors, are encompassed by the analysis. The analytical study is supportedwith simulation and experimental result, obtained using a five-phase induction motor.

   The Circuit-Level Decoupling Modulation Strategy for Three-Level Neutral-Point-Clamped (TL-NPC) Inverter
By Zhe ZHANG, Ole THOMSEN, Michael ANDERSEN [View]
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Abstract: In this paper, a circuit-level decoupling modulation strategy is proposed for the three-level (TL) neutral-point-clamped (NPC) inverters. With the proposed modulation scheme, the TL-NPC inverter can be decoupled into two three-level Buck converters in each defined operating section, which makes the controller design much simpler. The decoupling principle including the driving signal synthesis and the neutral point potential variation are analyzed detailed. It is found that switching losses can be reduced by one third and the voltage balance between the dividing dc link capacitors can be achieved without any feedback control. The simulation results show the validity of theoretical analysis.

EPE 2011 - LS3d: Topic 06: Converter Control, Sets and Modulation Strategies
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2011 ECCE Europe - Conference > EPE 2011 - Topic 06: Modulation Strategies and Specific Control Methods for Static Converters > EPE 2011 - LS3d: Topic 06: Converter Control, Sets and Modulation Strategies
	[return to parent folder]

	A New Carrier-Based PWM Strategy with Minimum Output Current Ripple for Five-Phase Inverters By Angelo TANI, Luca ZARRI, Michele MENGONI, Domenico CASADEI, Giovanni SERRA	[View] [Download]
Abstract: In this paper a new PWM strategy which minimizes the output current ripple for five-phase inverters is analytically determined. The optimization procedure is applied in each switching period, therefore its validity is not restricted to sinusoidal operations. The effectiveness of the proposed PWM strategy is proved by numerical simulations and experimental tests.

	Analytical Evaluation of Switching Characteristics in Five-Phase Drives with Discontinuous Space Vector Pulse Width Modulation Techniques By Joel PRIETO, Federico BARRERO, Sergio TORAL, Martin JONES, Emil LEVI	[View] [Download]
Abstract: This paper deals with flux harmonic distortion factor (HDF) and current ripple analysis for variousdiscontinuous space vector PWM (SVPWM) techniques, applicable in conjunction with five-phasetwo-level inverter-fed ac motor drives. The analysis is based on the application of the recentlydeveloped polygon approach for multiphase systems. The results are compared throughout with thecorresponding continuous SVPWM techniques. Two different SVPWM methods, based on differentselections of the active vectors, are encompassed by the analysis. The analytical study is supportedwith simulation and experimental result, obtained using a five-phase induction motor.

	The Circuit-Level Decoupling Modulation Strategy for Three-Level Neutral-Point-Clamped (TL-NPC) Inverter By Zhe ZHANG, Ole THOMSEN, Michael ANDERSEN	[View] [Download]
Abstract: In this paper, a circuit-level decoupling modulation strategy is proposed for the three-level (TL) neutral-point-clamped (NPC) inverters. With the proposed modulation scheme, the TL-NPC inverter can be decoupled into two three-level Buck converters in each defined operating section, which makes the controller design much simpler. The decoupling principle including the driving signal synthesis and the neutral point potential variation are analyzed detailed. It is found that switching losses can be reduced by one third and the voltage balance between the dividing dc link capacitors can be achieved without any feedback control. The simulation results show the validity of theoretical analysis.