摘要
为解决原有串调系统晶闸管逆变存在逆变颠覆的问题,用可控器件IGBT构成的逆变结构取代原有串调系统晶闸管逆变部分,并提出了电压空间矢量脉宽调制(SVPWM)控制策略。首先利用Simulink动态仿真工具实现了SVPWM控制算法应用于有源逆变的动态仿真,通过仿真实验证明了将SVPWM技术应用到内馈串级调速系统中的可行性。然后进行基于FPGA和单片机的系统硬件实验。结果表明,SVPWM控制的有源逆变,交流电流基本与反馈电压同相,交流电流波形接近正弦波,且谐波较小,将该控制策略运用于内馈斩波串级调速系统中有不错的控制效果。
In order to solve the problem of inverter subvision in original cascade speed regulation system for adopting thyristor inverter,replacing it with IGBT invertor and proposing space vector pulse width modulation（SVPWM） control strategy.Firstly,the Simulink dynamic simulation tool is used to achieve the simulation of SVPWM control algorithm for the active inverters.This simulation results prove the feasibility of applying the SVPWM technique to the inner-feeding chopper cascade speed regulation system.And then doing experiments are done based on FPGA and micro-controller.The results show that the AC current and feedback voltage waveform is perfect,AC current waveform is very close to sine wave and minor harmonic.Using the control strategy to the inner-feeding chopper cascade speed regulation system can get good control effect.
出处
《电力电子技术》
CSCD
北大核心
2010年第12期85-87,共3页
Power Electronics
关键词
空间矢量脉宽调制
有源逆变器
斩波串级调速
space vector pulse width modulation
active inverter
chopper cascade speed regulation
