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Position: Home > Articles > Digital Controller for PV Pumping Based on Synchronous Rectification Transactions of the Chinese Society for Agricultural Machinery 2009,40 (11) 100-104

基于同步整流的光伏水泵数字控制器

作  者:
魏海峰;李萍萍;包晓明
单  位:
江苏大学现代农业装备与技术省部共建教育部/江苏省重点实验室;格兰富水泵
关键词:
光伏水泵;无刷直流电动机;同步整流;无差拍控制;自适应无轨迹卡尔曼滤波
摘  要:
根据光伏水泵无刷直流电动机驱动实际需要,提出一种数字控制器解决方案。为降低控制器续流损耗,基于同步整流技术采用MOSFET代替体二极管续流,并可降低控制器温升,提高系统可靠性。研究了改进的无差拍控制策略,采用自适应无轨迹卡尔曼滤波方法(Adaptive UKF)在线辨识、修正系统参数,以改善力矩电流控制效果。仿真和实验结果表明,该方案易于数字实现,参数辨识有效,电流控制精度高,提高了系统运行性能。
译  名:
Digital Controller for PV Pumping Based on Synchronous Rectification
作  者:
Wei Haifeng1 Li Pingping1 Bao Xiaoming2(1.Key Laboratory of Modern Agricultural Equipment and Technology,Ministry of Education & Jiangsu Province,Jiangsu University,Zhenjiang 212013,China 2.Grundfos Pumps(China) Co.Ltd.,Suzhou 215126,China)
关键词:
PV pumping system,BLDCM,Synchronous rectification,Deadbeat control,Adaptive UKF
摘  要:
A novel digital controller solution was proposed,according to the actual driving of PV pumping system.To reduce freewheeling power consumption,MOSFET was used as freewheeling current path instead of diode based on synchronous rectification,which was helpful to reduce temperature of the controller and to improve the system reliability.The deadbeat digital controller was designed based on adaptive UKF,to identify and modify system parameters on line.Simulation and experimental results show that the designed scheme is easy to digital implementation,valid for parameters identification,and has higher current control precision. Therefore,it is effective to improve the performance of PV pumping system.

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