具有分压电容平衡功能的新型组合九电平逆变器

doi:10.19595/j.cnki.1000-6753.tces.160821

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Abstract Conventional multilevel inverter has the problems that partial pressure capacitance is difficult to balance and its structure becomes complex when number of electrical level are more than three time, this paper simplified combined topology consisted of the extension of NP mixed H bridge topology and balanced topology of independent partial pressure capacity combined topology firstly, and simplified, a new of nine levels inverter topology is got, then proposed a four carrier SPWM modulation strategy suitable for the topology. Finally the simulation analysis shows that extension of NP mixed H bridge topology among two partial pressure capacitor voltage amplitude at 0V reference voltage fluctuate, its amplitude to ±25V. Partial pressure of new nine level inverter capacitor voltage value fluctuates up and down in expectation of 100V, fluctuation amplitude is less than +5V. Simulation results show that the new nine levels inverter topologies and modulation strategies applied, not only reduce the amplitude of the output voltage ripple, to achieve the effect of equilibrium points ah capacitance, also reduced the application of two switch tube, reduce the economic costs.

Key words： Partial pressure capacity balance mixed H bridge topology nine level inverter four carrier cascade

Received: 21 June 2016 Published: 14 September 2017

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TM464

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	Articles by authors
	Gan Xue
	Cao Taiqiang
	Lin Yuting
	Liu Wei

Cite this article:

Gan Xue,Cao Taiqiang,Lin Yuting等. A New Simplificated Combination Nine Level Inverter with the Function Balancing Partial Voltage Capacitances[J]. Transactions of China Electrotechnical Society, 2017, 32(增刊1): 196-202.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.160821 OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I增刊1/196

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