摘要
对光伏发电系统的太阳能采集板的能效最优倾角的准确计算可以改善电机的转矩输出,提高对光伏电机的输出功率增益。当前的光伏发电系统的能效最优倾角估算方法采用贝叶斯参量估计算法,随着电机磁损耗的增加,导致能效最优倾角参量估计精度不高。提出一种基于电磁耦合器轴向切面磁场估计的光伏发电系统的能效最优倾角计算方法。分析了光伏发电系统的电磁耦合系统结构模型,利用蓄电池放电率特性修正原则,建立光伏发电系统的能效最优倾角目标函数,实现能效控制输出的目标参量系统传递函数构建,设计电磁耦合器轴向切面磁场估计算法,实现对光伏发电系统的能效最优倾角计算的算法改进。仿真结果表明,采用该算法进行光伏发电系统中能效最优倾角的计算,精度较高,优化了太阳能向电能的转换过程,有效提高对光伏发电系统的输出功率增益。
The accurate calculation of the optimal tilt angle of the solar energy collection board in the photovoltaic power generation system can improve the torque output of the motor and improve the output power of the photovoltaic motor. At present, the optimal tilt angle estimation method for photovoltaic power generation system is based on the Bayesian parameter estimation algorithm, and the estimation accuracy of the optimum tilt angle is not high with the increase of the magnetic loss of the motor. An optimal method for calculating the optimum tilt angle of photovoltaic power generation system based on the magnetic field of the axial section of the electromagnetic coupling is proposed. The structure model of photovoltaic power generation system is analyzed, and the energy efficiency of photovoltaic power generation system is set up by using the principle of discharge rate characteristic correction. Simulation results show that the proposed algorithm is used to calculate the optimum tilt angle of PV power generation system, and the conversion process of solar energy to power is optimized, and the output power of PV system is improved.
出处
《科技通报》
北大核心
2016年第1期158-162,共5页
Bulletin of Science and Technology
关键词
光伏发电机
系统
能效
参量估计
photovoltaic generator
system
energy efficiency
parameter estimation
