AC-DC-AC Power Converter

This study describes a system where a 50kW, 380V, 50Hz load is connected to a 25kV, 60Hz grid through an AC-DC-AC converter. The power supply configuration utilizes two voltage-source converters with intermediate DC-link capacitor buffering. This topology typically implements PWM control algorithms for both rectifier and inverter stages, with the DC capacitor maintaining voltage stability between conversion stages. Such power conversion systems are commonly deployed in industrial applications like manufacturing plants and production lines, where reliability and stability are critical since any malfunction could cause production interruptions and significant losses. The control system implementation often includes voltage/current feedback loops and protection algorithms to ensure safe operation. Design and maintenance require advanced technical expertise to guarantee reliability, with programming aspects involving DSP/FPGA-based controller implementation for real-time processing. Given the high power demands in industrial settings, efficiency and energy utilization are crucial design considerations. Therefore, these systems undergo rigorous testing and optimization procedures, including efficiency mapping algorithms and thermal management protocols, to maximize performance while maintaining operational reliability and stability under varying load conditions.