机械耦合式压缩空气储能风电系统涡旋机切入控制  

Scroll cutting-in control of mechanical coupling compressed air energy storage wind generation system

作　　者：褚晓广[1,2] 张承慧[2] 孔英[3] 李珂[2] 

机构地区：[1]曲阜师范大学电气信息与自动化学院,山东日照276826 [2]山东大学控制科学与工程学院,山东济南250061 [3]济宁医学院医学信息工程学院,山东日照276826

出　　处：《电机与控制学报》2014年第7期79-85,共7页Electric Machines and Control

基　　金：国家自然科学基金重大国际（地区）合作研究资助项目，国家高技术研究发展计划资助项目，曲阜师范大学学校级基金，曲阜师范大学博士科研启动基金

摘　　要：针对风能波动性和间歇性问题,提出了机械耦合式压缩空气储能风电系统。综合考虑过/欠压缩和摩擦对涡旋机性能影响,建立了涡旋机负载转矩平均模型,藉此构建了混合风电系统动态模型。鉴于模式切换极易导致机械冲击和风机工作点偏移等问题,采用Lyapunov理论给出涡旋机切入稳定判定条件；提出了基于涡旋机负载转矩补偿的发电机转矩协调控制策略；设计了风机转速跟踪和发电机转矩前馈补偿相结合的压缩储能优化控制器。基于1 kW风机试验平台验证了控制策略的有效性,风机转矩稳定,转速波动仅为25 r/min；而采用直接切入控制风机工作点偏移达100 r/min,转矩突变2.2 N＆#183;m。A mechanical coupling hybrid wind generation system with the compressed air energy storage is proposed to stabilize the wind fluctuation and intermittence. Considering the loss of the over/deficient compression and friction, the average scroll torque model was established, and then the whole dynamic model was constructed to describe hybrid wind generation system. Because mode transition might lead to the mechanical shock and operating point deviation, three-level control strategy was proposed, namely scroll cutting in stability region using Lyapunov function, generator torque coordination based on scroll load torque and compression optimal control combing speed tracking with the torque feedforward compensation. Based on the 1 kW wind generator system rigs, the strategy has been validated with torque stability and little speed variation with 25 r/min. While the direct cutting-in control acquires poor performance with the deviation from the optimal operating point by 100 r/min and torque sharp change by 2. 2 N＆#183;m.

关 键 词：压缩空气储能 协调控制 模式切换 涡旋机 机械耦合 

分 类 号：TM251[一般工业技术—材料科学与工程] TM91[电气工程—电工理论与新技术]