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Grid-connected PV power generation simulator

WANG Wei,HE Wei,LI Xin,GAO Ting-li,FENG Xun(1.Institute of Physics and Electronic Information of Yunnan Normal University,Yunnan Kunming 650092;2.School of Compnter Science and Information technology of Yunnan Normal Vniversity,Kunming 650092 China)  
This system uses a single regulator HT1112 pure sine wave inverter chip,combined with phase-locked loop technology,selection of SPCE061A Sunplus as an auxiliary controller,designed and produced a grid-connected PV simulator.With the self-sine pulse width modulation technology based on inverter-driven systems,and digital circuit to achieve large phase-locked loop,stable output frequency and phase was obtained.Core part of this system was implemented with hardware.Microcontroller used in part to monitor the work of the entire system status and achieve their protective function,analog electricity is also in part designed by the microcontroller.Through the interface between the hardware and microcomputer to achieve the inverter voltage output,phase tracking,frequency locking techniques,photovoltaic power generation was achieved ultimately.Through the keyboard input,liquid crystal display to form human-machine interface,the system was easy and fast to operate,and low power consumption,cost-effective,environmentally friendly reusable were achieved.
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