Electromagnetic Torque Analysis for All-Harmonic-Torque Permanent Magnet Synchronous Motor

Zhang, Wenjuan; Huang, Shoudao; Gao, Jin-Hua; Li, Rui; Dai, Litao

doi:10.1109/tmag.2018.2839032

Cited by 21 publications

(7 citation statements)

References 10 publications

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“…For a PMSM, the rotor MMF is generated by the excitation of PMs. When the effects of slotting and rotor leakage are ignored, the magnetic field waveform generated by the PMs in the air gap is considered as an ideal square wave, including all odd harmonics [26]. Assuming that the rotor rotation velocity is consistent with that of the stator working harmonic MMF, the rotor MMF of a PMSM is expressed by Fourier series as

F_{r} = \sum_{β = 1, 3, 5, \dots}^{\infty} F_{r n} \cos false(α ω t - β θ_{s} false)

where

α

is the time‐harmonic ordinal of the rotor MMF,

β

is the spatial harmonic ordinal of the rotor MMF.…”

Section: Effect Of Time‐harmonic Current On Harmonic Leakage Inductmentioning

confidence: 99%

Effect of time‐harmonic current on the harmonic leakage inductance of fractional slot concentrated winding permanent magnet synchronous motor

Zhang

et al. 2020

IET Electric Power Applications

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Harmonic leakage inductance occupies a high proportion in the synchronous inductance of fractional slot concentrated winding permanent magnet synchronous motor (FSCW‐PMSM), and the synchronous inductance determines the operating performance of the motor. To calculate the harmonic leakage inductance and synchronous inductance of the FSCW‐PMSM fed by inverters, two‐dimensional finite element analysis and the analytical method are used to study the influence of time‐harmonic current on the harmonic leakage inductance of the three‐phase FSCW‐PMSM in this study, and the influence mechanism is revealed. The relationship between the time‐harmonic magnetic field and space harmonic magnetic field is obtained, and the harmonic leakage coefficient and the working harmonic coefficient with different slot‐pole combinations are investigated. The results show that the time‐harmonic current can reduce the harmonic leakage inductance and increase the magnetising inductance, but has little effect on the synchronous inductance under the unsaturated condition. A prototype was manufactured and tested to verify the accuracy of the analysis model. The research results provide beneficial help for the design of the three‐phase FSCW‐PMSM fed by inverters.

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F_{r} = \sum_{β = 1, 3, 5, \dots}^{\infty} F_{r n} \cos false(α ω t - β θ_{s} false)

where

α

is the time‐harmonic ordinal of the rotor MMF,

β

is the spatial harmonic ordinal of the rotor MMF.…”

Section: Effect Of Time‐harmonic Current On Harmonic Leakage Inductmentioning

confidence: 99%

Effect of time‐harmonic current on the harmonic leakage inductance of fractional slot concentrated winding permanent magnet synchronous motor

Zhang

et al. 2020

IET Electric Power Applications

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“…The common strategy for the vector control is i d = 0 , and then control of the electromagnetic torque ultimately. 23,24 That is, the control of d axis current. The i d = 0 control is essentially to ensure that the d axis current in the stator remains unchanged at 0, and there is only q axis current i q .…”

Section: The Pmsm Model and Its Vector Controlmentioning

confidence: 99%

The decoupled vector-control of PMSM based on nonlinear multi-input multi-output decoupling ADRC

Liu

Wen

et al. 2014

Advances in Mechanical Engineering

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The Permanent Magnet Synchronous Motor (PMSM) is widely used in many fields. Aiming at nonlinearity, strong coupling and uncertainty of the PMSM, this paper proposes a nonlinear multi-input multi-output (MIMO) decoupling PMSM algorithm based on Active Disturbance Rejection Control (ADRC). A Lower-Upper matrix factorization approach is introduced to solve a general inverse of the measured time-varying matrix in real-time decoupling ADRC. This PMSM is based on the vector control. First, the PMSM model and vector control are simulated. Then, a first-order ADRC is introduced and used to replace the PID controller in the d and q axis of PMSM respectively. The simulation shows that the replaced system has a smaller fluctuation, faster response and better stability. Finally, the nonlinear MIMO decoupling ADRC and its inverse matrix method are deduced. Then, the decoupling PMSM control based on ADRC is verified. The simulation shows that this system has a better static and dynamic performance, and it conforms to the PMSM characteristics better. All this shows that the nonlinear MIMO decoupling ADRC is a better strategy for the PMSM. The presented algorithm also has advantage in method compared with some recent results of decoupling PMSM control.

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“…In response to these issues, electric vehicles (EVs) are receiving a lot of attention [1,2]. The use of a permanent magnet synchronous motor (PMSM) in EV driving motors is increasing because the PMSMs have high efficiency, high torque power density, and a high ratio of output torque to motor weight [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Optimal Design of IPMSM for EV Using Subdivided Kriging Multi-Objective Optimization

et al. 2021

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In this paper, subdivided kriging multi-objective optimization (SKMOO) is proposed for the optimal design of interior permanent magnet synchronous motor (IPMSM). The SKMOO with surrogate kriging model can obtain a uniform and accurate pareto front set with a reduced computation cost compared to conventional algorithms which directly adds the solution in the objective function area. In other words, the proposed algorithm uses a kriging surrogate model, so it is possible to know which design variables have the value of the objective function on the blank space. Therefore, the solution can be added directly in the objective function area. In the SKMOO algorithm, a non-dominated sorting method is used to find the pareto front set and the fill blank method is applied to prevent premature convergence. In addition, the subdivided kriging grid is proposed to make a well-distributed and more precise pareto front set. Superior performance of the SKMOO is confirmed by compared conventional multi objective optimization (MOO) algorithms with test functions and are applied to the optimal design of IPMSM for electric vehicle.

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Electromagnetic Torque Analysis for All-Harmonic-Torque Permanent Magnet Synchronous Motor

Cited by 21 publications

References 10 publications

Effect of time‐harmonic current on the harmonic leakage inductance of fractional slot concentrated winding permanent magnet synchronous motor

Effect of time‐harmonic current on the harmonic leakage inductance of fractional slot concentrated winding permanent magnet synchronous motor

The decoupled vector-control of PMSM based on nonlinear multi-input multi-output decoupling ADRC

Optimal Design of IPMSM for EV Using Subdivided Kriging Multi-Objective Optimization

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