新型智能直流输电模拟的系统设计

A New Intelligent Simulative System of Direct Current

轻型直流输电技术(HVDCLight)是20世纪90年代,在高压直流输电(HVDC)技术基础上发展起来的一项新技术。本文建立了一个背靠背轻型直流输电的物理模型。选用了TI公司专为基于控制的应用而设计的TMS320LF2407ADSP进行电压源换流器(VSC)的控制,主要完成A/D转换、过零检测、PI控制计算等功能。在CCS环境下进行编程,程序主要分为采样计算,PI控制器设计和PWM波生成。

HVDC （High Voltage Direct Current Transmission） Light technology is a new DC transmission technology developed on the basis of traditional HVDC from the 1990s. A back-to-back HVDC light system of the physical model was established in this paper. The TM320CLF2407 DSP was chosen to control the VSC. Completing the job of A/D conversion, zero-crossing detection, and calculation of PI control. According to the theory of control, control the system with fixed DC voltage and fixed DC current. The software was programmed under CCS environment. It was including sample calculation, PI control and form of PWM wave.