研究目的
To control a grid-connected, five-level, diode-clamped converter (DCC) with solar arrays directly connected to each capacitor of the dc-link, achieving desired capacitor voltages set by the MPPT algorithm and considering these values in the power controller.
研究成果
The paper presents a control strategy for a grid-connected five-level DCC converter with solar arrays directly connected to each capacitor of the dc-link. The strategy achieves desired capacitor voltages set by the MPPT algorithm and considers these values in the power controller, avoiding the use of DC-DC stages. Simulation results validate the effectiveness of the approach, showing improved power extraction from each solar array and satisfactory behavior of the algorithm.
研究不足
The paper does not explicitly mention limitations, but the complexity of balancing four capacitors in a five-level DCC converter and the need for tuning control parameters to avoid saturation during transients could be considered potential challenges.