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By using the characteristic that the output voltage of Cuk circuit can be step-up or step-down, Cuk AC/AC converter is applied in the field of street lighting, and an illuminance controller with continuous change of output voltage is proposed in this paper. Aiming at the problem of slow response speed of feedback control technology, this paper establishes the mathematical model based on the state-space...
It has been a hot issue and also a difficulty to study the fault tolerance of multilevel converters. The topology changes to eight-switch three-phase inverter (ESTPI) if one leg of three-level NPC inverter is failed. An optimal modulation algorithm of ESTPI is proposed in this paper. Due to the loss of one leg, the DC-link voltage utilization of ESTPI is reduced by half. Hence, an overmodulation algorithm...
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