改进型滑模观测器飞轮储能系统控制方法  

Flywheel Energy Storage System Control Method Based on the Improved Sliding Mode Observer

作　　者：宋兆鑫 张建成[1] 赵霁晴 郭伟[1] SONG Zhaoxin;ZHANG Jiancheng;ZHAO Jiqing;GUO Wei(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University,Baoding 071003,China)

机构地区：[1]华北电力大学新能源电力系统国家重点实验室,河北保定071003

出　　处：《华北电力大学学报（自然科学版）》2018年第5期36-42,共7页Journal of North China Electric Power University：Natural Science Edition

基　　金：国家自然科学基金资助项目(51177047);河北省科技支撑计划项目(16214504D);中央高校基本科研业务费专项资金资助项目(2018QN072)

摘　　要：针对飞轮储能系统所用永磁同步电机中高速运行时使用滑模观测器估算转子位置和速度存在误差的问题,对传统滑模观测器进行了改进,使用双曲正切函数代替Sign函数,减少了滤波环节和相位补偿环节,有效消除了飞轮电机中高速运行时的抖振,实现了对转子位置和速度的精确估计。此外,采用基于转子预定位的I/F控制策略控制飞轮电机的启动和低速运行,实现飞轮电机全速度范围的无传感器控制。搭建了飞轮储能系统仿真模型,进行了飞轮储能系统的启动、充电、待机、放电仿真。仿真结果验证了改进型滑模观测器飞轮储能系统控制方法的正确性和有效性。The traditional sliding mode observer was improved to solve the problem of the error of estimating the position and speed of the rotor in high-speed operation of permanent magnet synchronous motor applied to the flywheel energy storage system.The Sign function was replaced by hyperbolic tangent function,the filtering and phase compensation were cut off,and the chattering in flywheel motor at high speed was effectively eliminated,thus obtaining the precise estimation of rotor position and speed.In addition,I/F control strategy based on rotor pre-positioning was adopted to control the start-up and low-speed operation of flywheel motor,which realized the sensorless control of flywheel motor in full speed range.The paper established a simulation model of flywheel energy storage system and simulated situations of starting,charging,standby and discharging the system.The simulation results verified the correctness and effectiveness of the flywheel energy storage system control method based on the improved sliding mode observer.

关 键 词：飞轮储能系统 滑模观测器 双曲正切函数 I/F控制 充放电控制 

分 类 号：TM919[电气工程—电力电子与电力传动]