Abstract:
Vienna rectifiers’ high-voltage resistance, small size, and efficiency make them popular in electric vehicle charging systems, wind power generation, and other sectors. The Vienna rectifier’s slow response time, low anti-disturbance capabilities, and current zero-crossing distortion are addressed by a new sliding mode direct power management technique based on disturbance compensation.
First, an uncertainty model is created, and the neural network estimates and compensates the disturbance. Second, a new approaching law sliding mode direct power control strategy addresses existing control methods’ slow approach speed and system convergence. Reasons for the current zero-crossing distortion are examined and a compensatory strategy is provided.
Finally, simulations and experiments show that the suggested technique has no voltage overshoot and converges faster, solving the voltage-current phase problem. The rectifier has higher steady-state performance and anti-load disturbance ability at unit power. Current quality is improved by reducing total harmonic distortion below 2%.
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