电动车电驱动系统研究的回顾与展望

介绍了国内外电动车研究的基本状况、电动车的主要关键技术以及相关研究展望。     

A New—style Permanent—magnet Motor with Double—stator Structure

A new-style direct drive motor with double-stator structure is proposed. The structure and principle of the permanent-magnet (PM) brushless motor are discussed. On the basis of numerical calculation, the cogging torque waveforms of the prototype rrmtor when staggering two stators are analyzed. The method that can reduce torque ripple making use of the structure features of this motor is investigated. The results of numerical calculation and experiment indicate that designing motor with this kind of structure is a good seherne for increasing the power density.     

用描述函数分析模糊控制系统的稳定性

提出用快速傅立叶变换计算二维模糊控制器描述函数，并用来判别模糊控制系统的稳定性，文中给出了具体的计算方法和步骤。计算过程和结果表明这种方法简单，实用，不仅适合于PD类型的二维模糊控制器的稳定性分析，也适合于PI类型的二维模糊控制器和PID类型的三维模糊控制器，对于分析上述类型的模糊控制系统的稳定性具有工程应用价值。     

Study on fuzzy control of dynamic equalization based on state prediction

A new method of using dynamic equalization technology to realize the maximum energy storage utilization was presented to overcome the influence of the disaccord among units of series super capacitor (SC) bank and ensure that the units could work safely. By considering in combination with the high specific power, low working voltage, wide voltage working range and nonlinear external characteristics, we present constant duty ratio pulse frequency modulation mode and fuzzy control method based on state prediction in the active equalization circuit and accomplish the software and hardware design for the equalization system. The simulation analysis and experiment results of constant current multi-cycle and variable current multi-cycle charge-discharge process verify the validity of the design.