基于 PID 的变量马达恒速控制系统研究

针对传统变速风电系统电力电子变流器成本过高的问题，提出了一种新型的基于复合调速的液控稳频风力发电技术．采用PID控制算法，利用复合调速的控制方法，实现对变量马达的恒速控制．并依据系统特性，在完成液压系统设计与建模的基础上，对传统的PID控制方法进行优化．AMESim仿真证明，在风速大范围变化时，该控制系统保证了变量马达转速的恒定，为高品质发电创造了条件．

The constant speed control system of variable displacement motor based on PID control technology

T he constant speed control system of hydraulic control frequency stabilization based on PID control technology is researched .By adopting the composite speed control method and PID control algo-rithm ,the control from variable speed input of wind turbine to constant speed output of variable dis-placement motor was achieved .According to the system characteristics ,the traditional PID control strat-egy was optimized based on the design and modeling of the hydraulic system .The simulation in AMES-im shows that ,in high wind speed range ,a constant speed of variable motor is ensured by the control system ,creating conditions for high quality power .