High-Bandwidth and Strong Robust Current Regulation for PMLSM Drives Considering Thrust Ripple

Wang, Mingyi; Pan, Donghua; Tang, Yongbin; Guo, Qingbo

doi:10.1109/tpel.2015.2499303

Cited by 54 publications

(12 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With the observer, the thrust force ripple can be obtained and compensated online. In [9, 15], the disturbance is considered as Fourier series and obtained by a linearisation observer, and a sliding‐mode disturbance observer is proposed in [16].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Thrust force ripple reduction of H‐LVPMM based on dynamic harmonic current compensation

Chen

Kong

Zhou

et al. 2020

IET Electric Power Applications

View full text Add to dashboard Cite

Through the structural optimisation, the Halbach array‐linear vernier permanent magnet machine (H‐LVPMM) offers a higher force with extremely low ripple. However, thrust force ripple is minimised rather than eliminated and it reduces the precision of the control system. The thrust force ripple includes cogging force, end force and electromagnetic thrust ripple. Since the structural optimisation makes three phases balanced, the electromagnetic thrust ripple can be ignored. Here, a disturbance observer is proposed to observe and compensate the thrust force ripple by injecting the correspondent harmonic current into the closed‐loop controller in a feedforward method. It leads to second, fourth and sixth harmonic components in the q‐axis current. The closed‐loop current control with vector proportional and integral (VPI) regulator is applied to guarantee the current tracking accuracy of the harmonic components. Parameters are optimised according to the thrust force ripple harmonics and the open‐loop Bode diagram. The impact of thrust ripple is eliminated by the proposed control method. Experimental results show the validity of the disturbance observer and the VPI current controller.

show abstract

Section: Introductionmentioning

confidence: 99%

“…The current control technique plays an important role in achieving the high‐performance thrust output. Predictive current control (PCC) is proposed to increase the current control bandwidth [15]. However, PCC is vitally dependent on the accuracy of motor parameters, resulting in limitation of application.…”

Section: Introductionmentioning

confidence: 99%

Thrust force ripple reduction of H‐LVPMM based on dynamic harmonic current compensation

Chen

Kong

Zhou

et al. 2020

IET Electric Power Applications

View full text Add to dashboard Cite

show abstract

“…With the continuous development of equipment manufacturing technology, on the one hand, PMLSM drive system requires higher control bandwidth and dynamic response; on the other hand, it needs higher steady state accuracy and better static characteristics. These technique demand make advantage control strategies of PMLSM more desirable [2,3]. Recent years, with the rapid development of control platform devices, such as DSP (digital signal processor) and FPGA (field programable gate array), model predictive control (MPC) becomes attractive in control of electrical drive systems for some advantages such as good dynamic response and straightforward inclusion of nonlinearity and restrictions in the model and control [4,5].…”

Section: Introductionmentioning

confidence: 99%

Constant switching frequency model predictive control for permanent magnet linear synchronous motor

Zhao

Sun

et al. 2018

Transportation Systems and Technology

View full text Add to dashboard Cite

Aim: This paper proposes constant switching frequency model predictive control (CSF-MPC) for a permanent magnet linear synchronous motor (PMLSM) to improve the steady state and dynamic performance of the drive system. Methods: The conventional finite control set model predictive control (FCS-MPC) can be combined with a pulse width modulation (PWM) modulator due to an effective cost function optimization algorithm which is from the idea of dichotomy. In the algorithm, all the voltage vectors in the constrained vector plane are dynamically selected and calculated through iteration. The whole system including control algorithm and mathematical model of PMLSM is built and tested by simulation using MATLAB/Simulink. Besides, the control algorithm is tested in the FPGA controller through FPGA-in-the-Loop test. Results: With the modern digital processors or control hardware such as digital signal processors (DSPs) or field programmable gate arrays (FPGAs), the algorithm can be easily executed in less than 10-micro second. This is very proper for industrial applications. The proposed control algorithm is implemented on FPGA and tested by FPGA-in-the-Loop method. The proposed control algorithm can improve the performance of drive system greatly. Conclusion: The proposed CSF-MPC for PMLSM not only keeps the same dynamic transient performance as FCS-MPC but also greatly decreases the torque ripple in steady state. Furthermore, CSF-MPC is also robust to parameter variations. Simulation and FPGA-in-the-Loop results illustrate that CSF-MPC has an attractive performance for PMLSM drives.

show abstract

“…As linear motors, FSPMLM and PMLSM both suffer from detent force, so some methods to reduce detent force used in PMLSM can also be used in FSPMLM. The existing methods can be classified into two types: one is the control strategies of machines [10][11][12][13][14], and the other is the optimization of the machine structure [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30].…”

mentioning

confidence: 99%

“…In [11], the detent force of a PMLSM is oppressed by injecting a momentous current into phase windings by using field oriented control method. In [12], an improved predict current control scheme is adopted to protect PMLSM from the disturbance caused by parameter variation and thrust ripple. In [13], harmonic currents are injected into phase windings to reduce the dominate thrust ripple in an FSPMLM.…”

mentioning

confidence: 99%

Reduction of the Detent Force in a Flux-Switching Permanent Magnet Linear Motor

Zhao

Mou

Guo

et al. 2019

IEEE Trans. Energy Convers.

View full text Add to dashboard Cite

In this paper, the detent force caused by the end effect in a flux-switching permanent magnet linear motor (FSPMLM) with 6 slots and 5 poles is investigated and reduced by two different methods. Firstly, the detent force is diminished by adjusting the position of end teeth of primary side and injecting compensation current into compensation windings wound around the end teeth. Based on the linear relationship between compensation current and compensation force, the proper compensation current is derived and analyzed. Then, to avoid the magnetic coupling between compensation windings and phase windings, a novel compensation module with independent magnet circuit is presented and attached to the primary side of FSPMLM. Thirdly, the two detent force reduction methods are compared with each other, and the compensation module is proved to be more effective. Finally, a prototype of FSPMLM with compensation modules is manufactured and tested to validate the proposed compensation method. Index Terms-Flux-switching linear permanent magnet motor (FSPMLM), detent force, compensation coil, compensation module. I. INTRODUCTIONINEAR MOTORS possess several advantages such as rapid dynamic response, high precision, excellent reliability and quiet operation. Therefore, this kind of motor is greatly required in the occasions where linear motion is needed, such as rail transit, ropeless elevator, and electromagnetic launch [1][2][3][4][5]. However, for the applications demanding extremely long secondary, such as rail transit and ropeless elevator, the conventional permanent magnet linear synchronous motor (PMLSM) is inappropriate, because large amount of expensive permanent magnets or copper windings are indispensable. Flux-switching linear permanent magnet motor (FSPMLM) is more appropriate for the long secondary occasions, because its permanent magnets and windings are all installed in the primary side. Its secondary side only consists Manuscript

show abstract

High-Bandwidth and Strong Robust Current Regulation for PMLSM Drives Considering Thrust Ripple

Cited by 54 publications

References 34 publications

Thrust force ripple reduction of H‐LVPMM based on dynamic harmonic current compensation

Thrust force ripple reduction of H‐LVPMM based on dynamic harmonic current compensation

Constant switching frequency model predictive control for permanent magnet linear synchronous motor

Reduction of the Detent Force in a Flux-Switching Permanent Magnet Linear Motor

Contact Info

Product

Resources

About