Introduction.- A General Control Strategy for DC-DC Series-Parallel Power Conversion Systems.- Mathematical Model of DC-DC ISOP System and Closed-Loop Parameters Design.- Wireless IVS Control Strategies for Input-Series-Connected Systems Based on Positive Output Voltage Gradient Method.- General Control Strategy for DC-AC Inverter Series-Parallel Combined System.- Compound Balanced Control Strategy for Input-Series-Output-Parallel DC-AC Inverter System.- Compound Balanced Control Strategy for Input-Series-Output-Series DC-AC Inverter System.- An Improved Average Current Control Strategy for Input-Parallel-Output-Parallel Inverter System.- Input Voltage Sharing Control Strategy for ISOP Systems under Extreme Load Conditions.