共查询到19条相似文献,搜索用时 140 毫秒
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由于其双凸极结构,电动车用定子双馈电双凸极(SDFDS)电机驱动系统具有较强的非线性,常规PID控制器参数固定不易调节,难以得到较好的控制特性。由于单神经元具有自学习和自适应能力,且结构简单易于计算,因此该文设计了单神经元自适应PID控制器作为SDFDS电机的速度控制器,并在以数字信号处理器(DSP)TMS320F2812为核心的平台上进行了实验。实验结果表明,单神经元自适应PID控制器具有比常规PID控制器更好的动态和稳态性能,满足电动车对驱动电机的要求。 相似文献
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外转子双凸极永磁电动机的有限元分析 总被引:1,自引:1,他引:1
在双凸极变磁阻电机基础上,提出了一种外转子结构的双凸极永磁电动机并确定了其结构尺寸。针对该电机在不同转子位置角、不同电枢电流分别工作在单拍和双拍时的空载、负载以及电枢磁场单独作用的情况进行了基于场量的有限元数值计算,并进一步得出了该电机的静态参数特性曲线。分析表明,相对于双凸极变磁阻电机而言,由于该电机高磁阻高矫顽力的永磁体的存在,电机电枢磁链只能通过相邻极闭合而不能穿过磁钢匝链到其他相,使得绕组电感特性发生了变化。电枢磁通对永磁磁通增磁或去磁特性改变了永磁磁链的流向。电机由半周期控制运行模式变为全周期控制运行。 相似文献
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《中国电机工程学报》2016,(10)
该文从机电能量转换角度深入研究了双凸极电机电感周期变化特性对转矩输出能力的影响规律,提出双凸极无刷直流电动机的三相九状态控制方法。分析了双凸极电机三相绕组电感周期变化对相电流通入规律和进一步提升电磁转矩的控制规律的影响。采用场路耦合方法建立双凸极电机驱动系统模型,对比分析三相六状态和三相九状态控制策略对电流和输出转矩影响特性,得到不同转速和转矩下三相九状态控制的开关管优化导通逻辑和提前角参数。研制了1.3 k W双凸极无刷直流原理样机,实验验证了三相九状态控制策略对双凸极电动机输出转矩能力和调速系统运行效率的提高具有明显优势。 相似文献
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基于新型趋近律和混合速度控制器的IPMSM调速系统滑模变结构控制 总被引:2,自引:0,他引:2
为了提高内置式永磁同步电机(IPMSM)调速系统的动、静态性能,提出了一种基于新型变速趋近律的滑模控制器,该新型趋近律基于反双曲正弦函数,根据系统状态量,采取变带宽趋近方式,可有效抑制系统的稳态转矩脉动。为解决滑模控制中电机起动时响应速度快与起动电流大的矛盾,提出了一种基于PI和滑模控制(SMC)的混合速度控制器(HSC),该混合速度控制器中滑模控制基于新型趋近律,通过控制器输入值的大小选择控制方式,有效解决了上述矛盾问题,且该控制器可进一步提高系统的响应速度并能进一步抑制稳态转矩脉动。通过仿真和实验,验证了该速度控制器和该新型趋近律的可行性以及有效性。 相似文献
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Ming Cheng Chau K.T. Chan C.C. Qiang Sun 《Industry Applications, IEEE Transactions on》2003,39(5):1363-1371
This paper proposes a new 8/6-pole doubly salient permanent-magnet (DSPM) motor drive, which offers the advantages of higher power density, higher efficiency, and wider speed range. The corresponding control and operation of the motor drive are presented. A variable proportional-integral (PI) controller combined with bang-bang control for the DSPM motor drive is developed. Two operation modes, namely, four-phase and two-phase operation modes, are proposed for the 8/6-pole DSPM motor drive. The drive system is implemented and tested. The results show that the developed control scheme can operate the DSPM motor properly, and the DSPM motor drive offers high efficiency over wide power range and good dynamic performance. Furthermore, the two-phase operation mode of the 8/6-pole DSPM motor offers the possibility of eliminating the torque ripple of the motor drive. 相似文献
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为了提高六相永磁同步电机调速系统的动态特性,提出一种新型滑模趋近律,在传统指数趋近律的基础上,引入系统状态变量设计双变指数趋近律,抑制滑模控制抖振,并提高滑模趋近速率。使用该趋近律方法设计一六相永磁同步电机滑模速度控制器,并与传统指数趋近律、PI控制器分别进行试验比较。研究表明,在电机起动、稳态和突加负载三种状态下,新型趋近律在转速响应和转矩响应都优于指数趋近律和PI控制,该速度控制器能有效提高系统的静、动态特性与鲁棒性。 相似文献
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在高性能永磁同步电机(PMSM)控制系统中,要求有好的动、静态性能。但是传统的永磁同步电机矢量控制系统速度和电流环采用PI调节器,参数鲁棒性差,在调速范围要求很宽的情况下,无法同时满足响应速度快和稳态精度高的要求。为了获得好的动、静态性能,引入预测控制到速度控制外环,而电流内环采用在传统PI控制基础上增加电压前馈补偿的电流解耦控制。搭建了实验平台,进行了实验研究,验证了设计的控制系统具有动态响应快、静态误差小、受负载扰动影响小的特点。 相似文献
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This paper presents a robust speed controller for field oriented controlled interior permanent magnet synchronous motor (IPMSM)
drives. The proposed controller is designed using integral variable structure control (IVSC) combined with linear quadratic
regulator (LQR). The LQR scheme is used to decide the optimal feedback gain to shape the system dynamics by tuning the IVSC
switching plane to guarantee the robustness of the control algorithm. The complete drive is implemented in real-time using
digital signal processor (DSP) control board DS1102. The tracking properties and robustness of the proposed scheme are examined
through both simulations and experimental work. It guarantees accurate control performance in the presence of parameter variations,
step speed change and load disturbances. The performance of IPMSM drive system with a conventional proportional-integral (PI)
controller is presented in comparison with the proposed controller. The results show a significant improvement in both the
transient and steady state responses over the conventional PI controller. 相似文献
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Development and implementation of a hybrid intelligent controller for interior permanent-magnet synchronous motor drives 总被引:1,自引:0,他引:1
A hybrid neuro-fuzzy scheme for online tuning of a genetic-based proportional-integral (PI) controller for an interior permanent-magnet synchronous motor (IPMSM) drive is presented in this paper. The proposed controller is developed for accurate speed control of the IPMSM drive under various system disturbances. In this work, initially different operating conditions are obtained based on motor dynamics incorporating uncertainties. At each operating condition a genetic algorithm is used to optimize the PI controller parameters in a closed-loop vector control scheme. In the optimization procedure a performance index is developed to reflect the minimum speed deviation, minimum settling time and zero steady-state error. A fuzzy basis function network (FBFN) is utilized for online tuning of the PI controller parameters to ensure optimum drive performance under different disturbances. The proposed FBFN-based PI controller provides a natural framework for combining numerical and linguistic information in a uniform fashion. The proposed controller is successfully implemented in real time using a digital signal processor board DS 1102 for a laboratory 1-hp IPMSM. The effectiveness of the proposed controller is verified by simulation as well as experimental results at different dynamic operating conditions. The proposed controller is found to be robust for applications in an IPMSM drive. 相似文献