摘要
针对抽油机驱动中出现的问题,并且考虑变频器研制过程中不可控整流电路在工作过程中经常出现故障的情况,设计了基于可控整流的变频控制系统。利用可控硅SCR作为整流器件,通过软件控制可控硅的导通关断达到整流过程的可控性。在IGBT驱动软件设计方面采用了恒压频比控制策略,利用空间矢量SVPWM算法实现对电动机输入电压和频率进行最优控制的目的。在控制芯片方面,采用STM32F107作为核心芯片,完成了30 k W可控整流变频器样机的研制。通过现场试验证明,设计方案在抽油机节能方面具有显著效果。
According to the problem on the driver for beam pumping unit,in order to solve the work fault of the uncontrolled rectifier during researching,we designed the frequency conversion control system based on controlled rectifier.This system using SCR as the rectifier device,through the software control makes the SCR to be controlled.The control software for driving IGBT was designed based on space vector control PWM with constant voltage frequency ratio control strategy,to make the voltage and frequency of the controlled motor optimum.We used the STM32F107 as the core chip.We completed the prototype of 30 kW controlled rectifier inverter and the field test.Through the field test,the design scheme has significant effects on energy-saving of pumping unit.
出处
《石油石化节能》
2016年第4期15-18,8,共4页
Energy Conservation in Petroleum & PetroChemical Industry
