摘要
为钻机混合动力传动系统研制了1套1 MW/60 MJ飞轮储能系统,开展了轴系动平衡、充放电、损耗和效率测试实验研究。采用高强度合金钢变截面飞轮存储动能,飞轮电机轴系为立式支撑结构,重型拼装永磁环轴承承担了97%的轴系重量。永磁电机转子采用格柵结构硅钢内嵌磁钢,以实现较高速度安全运转。基于大容量功率电子变换和电机控制技术,开发了100~300 k W充电、500~1 000 k W放电的控制电路硬件和软件,充电过程中采用了弱磁、转速和电流的双闭环控制策略,放电过程中采用电压闭环和电流前馈控制策略。动平衡后飞轮储能机组振动减少为0.07 mm以内。飞轮储能电源充放电循环效率达到86%~88%。
The balancing on the shaft of flywheel-motor,the charging/discharging experiments,loss and efficiency testing was carried out on a 1 MW/60 MJ flywheel energy storage power system developed for the hybrid power system of an oil drill rig. The kinetic energy with 60 MJ was stored by a high strength alloy steel flywheel with variable-cross-section. The permanent magnetic bearing bore 97% of weight of the vertical shaft of the flywheel and motor. The permanent magnets were imbedded in the rotor laminated of silicon-steel sheets with grille structure for safe rotationat high speeds. The control hardware and software was developed for the charging in power of 100-300 k W and discharging in power of 500-1 000 k W. Control strategies such as flux-weakening,double closed-loop of speed and current,voltage closed-loop and current feedforwardwere used in the charging and discharging of the permanent magnet motor. The vibration displacement was decreased to lower than 0. 07 mm after field balancing on the flywheel-motor bearing system. The energy storage efficiency is 86-88% in one charging/discharging cycle in the running of the flywheel energy storage system.
出处
《电工技术学报》
EI
CSCD
北大核心
2017年第21期89-95,共7页
Transactions of China Electrotechnical Society
基金
国家科技支撑计划资助项目(2014BAA04B02)
关键词
飞轮储能
机械设计
功率电子
电机控制
Flywheel energy storage
mechanical design
power electronics
motor control
