基于功率变化子空间的直接功率控制

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Abstract The instantaneous power mathematical model of three-phase voltage-source inverter was established based on instantaneous power theory. Considering the instantaneous power for power rate of cross-coupling effect, the equilibrium vector was derived and the subspace of power variation was established. Then the effect of voltage space vector on instantaneous power in the subspace was studied, compared with the traditional switching tables. A new direct power control strategy based on subspace of power variation was proposed, which built a dynamic switching table by setting active and reactive power priority reference. The proposed strategy can select the voltage space vector more accurately, broaden the power adjustment range of inverter, and reduce the power ripple. The proposed control strategy was verified by the simulation and experiment.

Key words： Grid-connected inverter power variation subspace cross-coupling direct power control switching table

Received: 07 December 2013 Published: 30 December 2015

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TM464

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	Articles by authors
	Zhou Xiaojie
	Zhang Xia
	Wang Fei

Cite this article:

Zhou Xiaojie,Zhang Xia,Wang Fei. Direct Power Control Based on Subspace of Power Variation[J]. Transactions of China Electrotechnical Society, 2015, 30(24): 142-151.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2015/V30/I24/142

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