The Design Of Experimental Platform On VSC-HVDC

The VSC-HVDC is established on the basis of the traditional dc transmission，which usesthe pulse width modulation (PWM) to drive full controlled voltage source inverter type ofnew technology. Since the inverter not only has the strong function and small size，but alsoreduces the converter equipment and simplifies the structure of converter. So it is calledVSC-HVDC. Apart from the advantages of traditional HVDC，it can also supply power topassive network and connect scattered power，and also has static reactive compensationeffect，etc. At the same time，it can be used as SVG.This article introduces more about the technology of the study of the background，theprinciple of light dc transmission，the simulation and experiment. Firstly，the paper expoundsthe background of VSC-HVDC and the research significance. Secondly，it establishes theVSC-HVDC static mathematical model of three-phase coordinate system. In a synchronousrotating d-q coordinate system，dual closed loop control system is introduced in detail below，including the outer control and inner control. Thirdly，the VSC-HVDC simulation model isdesigned on MATLAB. The simulate experimental results and theories are given，at the sametime they will be helpful to the physical design. Finally，the small physical experimental isestablished. DSP of TI Company which type is TMS320F2812is used as the main controlchip.