Advances in Grid-tied PV Inverters II: Mode Control, Arc Detection, and Electrolytic Capacitors Replacing

The renewable energy industry has grown dramatically in recent years as a result of global green missions. PVs are widely regarded as the most cost-effective renewable energy source. For PV-battery hybrid systems, the system operates in various scenarios depending on PV power, load power, and battery status, and the control loop may need to switch. Chapter 2 presents a generalized mode control method for avoiding loop switching in a variety of scenarios. PV DC arc-faults have the potential to start fires, damage property, and endanger people's lives. An AI-based DC arc detection technique is proposed in Chapter 3. High reliability and long lifespan are always the goals for power conversion systems, especially in PV applications. Chapter 4 investigates active low-frequency current absorbing method applied in PV systems to replace electrolytic capacitors with film capacitors.