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第36届中国控制会议

作者： MENG Hao XIE Zhen School of Electrical Engineering and Automation Hefei University of Technology

The technology of microgrid has been developed by the progress of new energy technology,the new energy connected to the microgrid by（distributed generator） *** represents the new direction of the power grid as the great complements of traditional power supply *** paper presents that using several photovoltaic grid-connected inverters as the DG,and control the microgrid by controlling the *** control methods of inverters are P/Q control,v/f control and droop control,because there don’t need communication among the inverters when using the droop control,so it has higher *** paper using the droop control,and introduced virtual impedance,realize the microgrid system can operate normally with the load when the microgrid system suddenly break off from the grid,and ensure the system can switch,when connecting to the grid current source and switch to the voltage *** it verifies the feasibility of the control method by using building the simulation in Simulink.

关键词： microgrid inverter voltage source virtual impedance droop control

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Design and Realization of a High-Precision Numerical Control Current source

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微计算机信息 2008年第4期 180-182页

作者： CHEN MINGJIE WANG XIANGQIAO CAI ZHONGJIAN (College of Computer and information Engineering, Chongqing Technology and Business University, CHONGQING, 400067)

The design adopts self-designed high accurate voltage source, Micro Control Unit (MCU), D/A converter and amplifier to control the on-state of Power MOS FET, to attain constant current. The closed loop system realizes constant current output of high-precision, presettable and step-by-step adjustable, and its output current data can be directly displayed by digital devices. Finally achieve a high-precision constant current source by locking output with closed hardware loop, closed software loop, software realtime integrating, real-time filtering. The role of software is to compensate the temperature variance of sampling resistances by data segment interpolation, while the linear interpolation compensation is applied to intersegments, which improves the output precision further. It has advantages on high precision, simple construction, performance stable, easy operation, low cost and loaded capability.

关键词： Current source voltage source MCU

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