Abstract
In this paper, a hybrid system to carry out the function of photovoltaic power generation and power quality control simultaneously was proposed. The configuration and principle of the hybrid system were discussed firstly, and then the mathematical model of the hybrid system was presented. To realize the compound function, a deadbeat compound control strategy was proposed. In the compound control strategy, the calculation method of the reference signal is proposed to achieve reactive power and harmonic detection, active signal for grid-connected electricity generating and DC-side voltage maintaining; to improve the dynamic response and decrease the steady-state error of the hybrid system, deadbeat compound control method was proposed. The new hybrid system is implemented in a 10kVA prototype in the laboratory. Simulation and experimental results show that the proposed hybrid system can effectively stabilize photovoltaic power generation, reactive power compensation, and harmonic elimination.
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