永磁同步电机重载驱动的伺服压力机动力系统电容储能参数  

Analysis on Capacitor Energy Storage Parameters of Servo Press Dynamic System of PMSM With Heavy Load

作　　者：鲁文其[1] 胡育文[1] 黄文新[1] 杜栩扬[1] 

机构地区：[1]南京航空航天大学航空电源航空科技重点实验室,南京210016

出　　处：《电工技术学报》2010年第10期59-65,共7页Transactions of China Electrotechnical Society

摘　　要：阐述了曲柄机械式伺服压力机样机研制的整机方案,动力系统以永磁同步电机和电容储能装置的组合取代传统机械压力机的异步电机和机械飞轮—离合器组合,重点对该动力系统的电容储能参数进行了研究。分析了伺服压力机的工作模式及该电容储能装置在冲压过程电压电流的变化情况。在Matlab环境下建立重载伺服驱动系统的模型,以研制一台80t的伺服压力机为目标,通过仿真对电容储能参数的选取进行分析,提出一组合理的储能参数,并设计实现了该样机的重载伺服驱动系统。结合曲柄式机械压力机,以液压蓄能器作为负载对象进行试验。结果证明,该伺服系统能够满足压力机冲压加工的重载驱动特性,提出的储能参数是合理的,设计的电容储能装置不仅可以实现机械飞轮的助力作用,而且减缓了峰值电流对电网的冲击,采用的动力系统方案具有大功率高过载的特点,在伺服压力机场合应用是可行的。The whole machine scheme of the developed crank mechanical servo press is proposed.The dynamic system combination of permanent magnetic synchronous motor（PMSM）and capacitor energy storage device substitutes for the traditional mechanical press＇s combination of asynchronous motor and mechanical flywheel-coupling.Analysis and research on capacitor energy storage parameters of the dynamic system are made.The paper describes the working mode of servo press as well as the voltage and current＇s changing situation of the capacitor energy storage device during the stamping processing.The heavy servo system model is established under the Matlab environment.Taking a 80t servo press as the goal,the selection of capacitor energy storage parameter is analyzed through the simulation.A group of reasonable energy storage parameters are proposed and a heavy load servo drive system on this prototype is designed also.Combining with crank mechanical servo press,experiments are carried taking the hydraulic accumulator as the load object.The result proved that the servo system can satisfy the request of heavy load driving performance while the slide stamping processing.The capacitor energy storage device designed can not only realize the function of the mechanical flywheel,but slow down the impact of the summit current on power grid.The scheme proposed has the characteristic of high efficiency and high overload which is feasible in the servo press application occasion.

关 键 词：伺服压力机 永磁同步电机 电容储能 动力系统 重载驱动 

分 类 号：TM341[电气工程—电机]