Optimization Control for Bidirectional Power Converter of DC Micro-grid Power Distribution in Highway Tunnel

摘要

The characteristic of micro DC-Grid power supply is very valuable to remote mountainous highway tunnel. It can operate not only on parallel mode, but also on isolated mode. Power electronic bidirectional three-level inverter is a key link in the system. A novel three-level inverter SHEPWM algorithm is studied in the paper according to the internal relation betweenSVPWMand SHEPWM. The switch angle of the algorithm can be achieved by synthesis of the space voltage vector. The method has same Harmonic elimination effect, and can completed the task of AC load in micro DC-Grid system, to achieve stable operation of new energy highway tunnels of DC power supply system.