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通过分析并联混合型系统的结构特点,并针对目前控制系统设计中普遍存在的功能设置不完善的问题,提出了一种改进的控制系统设计方案。整个并联混合型APF控制系统基于TMS320F2812DSP设计,并充分利用了F2812在控制方面的优越性能及高速的计算能力,所以可以采用复杂的控制策略来达到提高补偿效果的目的。控制系统在传统的电流检测、直流电压平衡控制、SVPWM控制的基础上增加了电流预测、输出直流分量调节、无差拍控制等控制环节,丰富了控制系统的功能。基于此控制系统的并联混合型APF实验样机已经在现场投运。通过现场运行表明,系统功能完善、控制精度高、动态性好,采用该控制系统的并联混合型APF谐波抑制效果显著。研究成果对于其他类型的电能质量治理设备的开发有一定的借鉴意义。
By analyzing the structural characteristics of parallel hybrid systems and aiming at the imperfect setting of functions in the design of control systems, an improved control system design is proposed. The parallel hybrid APF control system based on TMS320F2812DSP design, and take full advantage of the F2812 superior performance in control and high-speed computing power, so you can use complex control strategies to achieve the purpose of improving the compensation effect. Control system in the traditional current detection, DC voltage balance control, SVPWM control based on the increase of current prediction, output DC component adjustment, control and other controlless beat link, enriched the control system functions. Based on this control system parallel hybrid APF experimental prototype has been put into operation in the field. The field operation shows that the system has perfect functions, high control precision and good dynamic performance. The harmonic suppression effect of parallel hybrid APF with this control system is remarkable. The research results have some reference to the development of other types of power quality control equipment.