线性永磁振动电机的谐振模式

Q3 Energy
R. Bondar
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引用次数: 0

摘要

研究了直线永磁振动电机的谐振工作模式。在具有集总参数的电气和机械等效电路的基础上,得到了确定机械、电气、能量和功率谐振频率的表达式。在单质量机电系统中存在两个电谐振频率(当电源电压和电机电流相位重合时),而在双质量机电系统中存在四个电谐振频率。根据机电类比的方法,得到了等效机械阻抗的表达式,表示由相应的压降引起的电动机运动所产生的反电动势。得到了电机的能量特性(机械功和效率)与等效电路参数的关系。根据磁阻电磁力的表达式,求出了机械功,并给出了其与位移与电流相位差的关系。确定了电动机总机械功最大时的相位差。结果表明,谐振模态分析结果与在时域准平稳磁场方程的基础上,采用有限元法和动区移动型计算网格进行的数值场研究结果吻合较好。参考文献12,图6,表1。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
RESONANT MODES OF A LINEAR PERMANENT MAGNET VIBRATORY MOTOR
The work considers the resonant operation modes of the linear permanent magnet vibratory motor. On the basis of electrical and mechanical equivalent circuits with lumped parameters, expressions for determining the frequencies of mechanical, electrical, energy and power resonances are obtained. The presence of two frequencies of electrical resonance (when the phases of supply voltage and motor current coincide) in a single-mass electromechanical system and four in a two-mass one is substantiated. Representing, according to the electromechanical analogy approach, the back EMF induced due to the movement of the mover by the corresponding voltage drop, expressions for equivalent mechanical impedances are obtained. The dependences of the energy characteristics of the motor (mechanical work and efficiency) on the equivalent circuit parameters are obtained. Based on the expression for the reluctance electromagnetic force, mechanical work is found and its dependence on the phase difference between displacement and current is shown. The phase difference at which the total mechanical work of the motor is maximal is determined. It is shown that the results of the analysis of resonant modes well agree with results of a numerical field study carried out on the basis of the equations of the quasi-stationary magnetic field in the time domain using the finite element method and the moving type of calculation mesh in the mover region. References 12, figures 6, tables 1.
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来源期刊
Technical Electrodynamics
Technical Electrodynamics Energy-Energy Engineering and Power Technology
CiteScore
1.80
自引率
0.00%
发文量
72
审稿时长
4 weeks
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