六相电压源逆变器PWM算法

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Abstract For six-phase motor which has two sets of Y-connected three-phase windings spatially phase shifted by 30 electrical degrees, a space vector pulse width modulation (SVPWM) algorithm of six-phase voltage-source inverter based on adjacent four largest voltage vectors is discussed. According to the value of modulation index, the modulation range could be divided into sinusoidal range and non-sinusoidal range. In sinusoidal range, the inverter produced sinusoidal phase voltage. In non-sinusoidal range, two modulation algorithms are proposed to increase the magnitude of fundamental voltage by injecting the harmonic voltages of 6k±1(k=1, 3, 5, …). The second algorithm considering both magnitude and phase angle of the reference voltage has fewer harmonics than the first one. To simplify the hardware implementation, the PWM waveform is centralized with the same average voltage. The validity of the algorithm is confirmed by experimental results.

Key words： Six-phase motor voltage source inverter space vector pulse width modulation

Received: 15 April 2010 Published: 20 March 2014

PACS:

TM301.2

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	Yang Jinbo
	Yang Guijie
	Li Tiecai

Cite this article:

Yang Jinbo,Yang Guijie,Li Tiecai. PWM Techniques for Six-Phase Voltage-Source Inverters[J]. Transactions of China Electrotechnical Society, 2012, 27(7): 205-211.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I7/205

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