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The micro-grid’s control methods and simulations are presented in the paper. The control methods are discussed in preset conditions, which are called the grid-connected mode and islanded mode. During the grid-connected mode, the P/Q control is adopted. However, the control method is changed to U/f control when it turns to the islanded mode. To demonstrate the operation of the micro-grid in the two...
Based on the technology of system on a programmable chip (SOPC), a frequency variable inverter is developed and implemented, and the field-programmable gate array (FPGA) in the series of Cyclone III manufactured by Altera Co. is utilized. By the simulation tool Matlab/Simulink, the proposed inverter is simulated. In addition, an experimental platform, by which the frequency of inverter's output voltage...
Grid-connected control method and simulations of the micro-grid are presented in the paper. The typical configuration of the micro-grid is presented. In order to ameliorate the effect of power quality during the grid- connected process, the power flow in the micro-grid is analyzed based on the characteristic of frequency and active power, and the time when the difference value of the voltage between...
Based on the technology of system on a programmable chip (SOPC), a frequency variable inverter is developed and implemented, and the field programmable gate array (FPGA) in the series of Cyclone III manufactured by Alter Co. is Utilized. The mathematical model of the three-phase inverter and related control strategy are established in this paper, then the design of its hardware and software are fulfilled,...
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