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Z-source inverter wind power generation system based on DSP

2013-09-22
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This paper introduces the design of a small-power distributed wind power generation system based on Z-source inverter and the SVPWM control strategy with direct zero vector implemented by DSP. The wind speed of wind power generation varies widely and is uncontrollable, which leads to large changes in the output voltage amplitude and poor current quality. This design adopts a double closed-loop structure to ensure a constant output voltage; at the same time, the Z-source topology is used to replace the traditional boost circuit, which can flexibly control the boost ratio, avoid the restrictions on the cut-in and cut-out speeds of the traditional wind power generation system, and increase the wind speed range of wind energy utilization; at the same time, it avoids the crossover distortion caused by the addition of dead zone, improves the output sinusoidality; and the single-stage topology of the Z-source is conducive to the improvement of conversion efficiency. Using ADI\'s BF506 to implement SVPWM to control the three-phase Z-source inverter will obtain more superior performance and cleaner energy.

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