Micro-Grid Converter Droop Control Strategy and Simulation

Prominent worldwide environmental problems makes the development of new energy distributed generation technology has been developed. Direct access to the low-voltage distributed power distribution network makes the system affected to some degree, in the form of micro-grid integration of distributed power is a good solution, and the presence of a large number of micro-grid inverter, micro-network research inverter controls are important. In the micro-grid, droop control strategy to simulate the droop characteristics of traditional power systems, active by changing the output of reactive power to control the frequency and amplitude of the output voltage, so that the micro-grid system can stabilize voltage in island operation mode point work, and with the voltage grid mode or less smooth transition when switching can guarantee the normal work load undisturbed, is an important variable flow control methods. On PSIM simulation software droop control strategy simulation, circuit simulation designed specifically for the control strategy, and the output waveform is studied. Simulation results show the schematic design of the control strategy is correct. Key-Words: distributed power source,microgrid,droop control,PSIM,simulation,Converter