共查询到15条相似文献,搜索用时 78 毫秒
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本文以自行设计和研制的结构新颖的12/10开关磁阻电机为研究对象,根据所选发动机(长安奥拓小型客车三缸汽油发动机)对电机起动、发电及助动的要求,设计了一台2.5kW飞轮式开关磁阻起动/发电机原理样机,采用36/42V直流电源系统,建立了该电机的有限元仿真分析模型,对该电机进行了两维电磁场的有限元分析,得到电机较为精确的模型,结合该电机系统的功率变换电路和控制单元,进行了系统仿真,同时着重对该电机系统的起动过程和起动特性进行了研究和分析,对样机进行了测试并取得了满意的结果,理论分析实测结果基本吻合,表明该电机的设计方法、系统建模和控制策略是合理和可行的。 相似文献
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Hao Chen Xing Wang Yongqiang Liu Vuong Dang Quo Wenju Yan Muhammad Saqi Antonino Musolino Guanjun Wang Yong Qi Ali Asghar Memon Alexandros G. Paspatis 《电力系统保护与控制》2024,9(4):147-159
In order to better realize the energy recovery and storage of hybrid EVs (HEVs), a switched reluctance starter/generator (SRS/G) with both starting and power generation functions is investigated in this paper. First, the iron loss of SRS/G is mainly studied to reduce the motor loss and improve the power generation efficiency. Then, the energy storage of hybrid EVs can be effectively improved. Secondly, a magnetic flux density (MFD) wave-forms solution method is proposed to solve the difficulty in calculating the iron loss of the SRS/G. Compared with the commonly used finite element method, the proposed solution method has the advantages of simple, fast and small computational amount. Meanwhile, considering the different operating conditions of SRS/G, the iron loss models for both the time-domain and frequency-domain are established. In addition, the calculation formula of the variable coefficient Bertotti three-term loss separation is improved. As the hysteresis loss coefficient, the Steinmetz coefficient and the stray loss coefficient are respectively fitted by the Fourier fitting method. This method is also applied to solve the iron loss of SRS/G. Finally, through an experimental verification, it is indicated that the development of proposed method has high accuracy. 相似文献
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Hao Chen Fan Yang Lijun Xu Qiwei Lu Xiqiang Chang Xing Wang Lijiang Dong Yi Wen Jiang Chen Gang Miao Jianmin Hu Guanjun Wang Wei Li Xiaohua Bao 《电力系统保护与控制》2024,9(1):112-121
In this paper, the combined k-out-of-n : G model and reliability block diagram model is used to analyze the reliability of a switched reluctance starter/generator system. First, the different operational modes of a switched reluctance motor starter/generator are analyzed, and the fault states of the system are briefly described. Then the fault criteria of the system in different operational states are put forward. Secondly, a reliability block diagram model is established to calculate the system-level reliability, and the k-out-of-n : G model is adopted to analyze the reliability of each part of the switched reluctance starter/generator system. To verify effectiveness, the first-order Markov model is also used to analyze the reliability of each part of the switched reluctance starter/generator system. Considering the computational complexity and accuracy of the system, the k-out-of-n : G model is more suitable for system component level reliability analysis. Finally, a 6/4 switched reluctance motor is used as the simulated and experimental platform motor. The final results verify the effectiveness of the reliability analysis model. 相似文献
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分析全周期发电模式下无轴承开关磁阻发电机(bearingless switched reluctance generator,BSRG)的悬浮机理和发电原理,利用等效磁路法推导全周期BSRG的一相磁场储能表达式.考虑到全周期BSRG的控制方式和主、悬浮绕组的电流波形,将两套绕组电流等效为方波;再根据机电能量转换原理,积分得到了利用方波电流峰值表示的平均转矩和平均悬浮力表达式.结合输出功率与平均转矩的关系,推导出了全周期BSRG的主体尺寸计算公式.利用平均悬浮力设计样机最大径向负载要求,并通过绕组峰值电流与气隙磁密的关系计算绕组的匝数.最后,基于所提方法设计了一台实验样机,并通过有限元仿真验证了所提方法的正确性. 相似文献