Parallel Connected PFC Controller for AC-DC and DC-DC Power Conversion Systems

This text discusses parallel-connected power factor correction (PFC) controllers along with AC-DC and DC-DC converters. These components are widely employed in power electronic systems to regulate critical parameters including power factor, current, and voltage within circuits. The parallel configuration of PFC controllers enhances system stability and reliability through redundant control paths, while simultaneously improving efficiency and power density via load-sharing algorithms. AC-DC converters employ switching topologies like boost or buck-boost circuits with PWM control to transform alternating current from power sources into regulated DC output, whereas DC-DC converters utilize techniques such as pulse-width modulation (PWM) or resonant switching to adapt DC voltage levels for diverse electronic device requirements. In code implementations, these systems often incorporate digital signal processors (DSPs) for real-time power factor calculation using phase detection algorithms and voltage/current feedback loops. Control logic typically involves PID regulators with anti-windup protection and maximum power point tracking (MPPT) algorithms for optimal energy conversion. The design and application of these systems are therefore crucial for advancing power electronics technology, particularly in renewable energy integration and high-efficiency power supplies.