A Thrust Ripple Suppression Method for Long-Primary Double-Sided Linear Induction Motors Based on Harmonic Current Injection

Zhou, Weichang; Sun, Zhaolong; Zeng, Rongtao; Mao, Yinhao; Ding, Anmin

doi:10.1109/tte.2022.3209194

Cited by 2 publications

(2 citation statements)

References 17 publications

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“…Thus, improvements to traditional three-phase voltage sources are necessary to eliminate thrust ripples. One proposed enhancement involves injecting negative sequence voltage harmonics [17][18][19]. However, this method faces difficulties in practical engineering applications due to This study focuses on analyzing the thrust ripples of LIMs based on a mathematical model, where the parameters can be obtained through experimental measurements.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, improvements to traditional three-phase voltage sources are necessary to eliminate thrust ripples. One proposed enhancement involves injecting negative sequence voltage harmonics [17][18][19]. However, this method faces difficulties in practical engineering applications Electronics 2024, 13, 1247 3 of 21 due to complex calculations and the need to parallel two power sources, which is detrimental to the stability of the control system.…”

Section: Introductionmentioning

confidence: 99%

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Control Strategies of Thrust Ripple Suppression for Electromagnetic Microgravity Facility

Li,

Dong,

et al. 2024

Electronics

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This paper presents an innovative solution that is able to suppress the thrust ripple in a high-power asynchronous linear induction motor (LIM) used in a microgravity experiment facility electromagnetic launch (MEFEL) system. By addressing the crucial need for low levels of thrust ripple in MEFEL applications, we propose a dynamic model-based adaptive controller (MAC) and an enhanced quasi-proportional-resonant (PR) controller. The MAC is designed to compensate for the inherent impedance asymmetry of the linear motor. The PR controller minimizes thrust ripple by eliminating harmonics within the current loop. A comparative analysis indicates that both MAC and PR control are effective in reducing harmonics, suppressing the thrust ripple, and maintaining system stability. Computer simulations show a noteworthy 75% reduction in the thrust ripple and a decrease in the negative current. Partial tests on the MEFEL device validate the practical efficacy of the proposed control methods, emphasizing the method’s ability to enhance the quality of microgravity in real-world scenarios significantly.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Thus, improvements to traditional three-phase voltage sources are necessary to eliminate thrust ripples. One proposed enhancement involves injecting negative sequence voltage harmonics [17][18][19]. However, this method faces difficulties in practical engineering applications Electronics 2024, 13, 1247 3 of 21 due to complex calculations and the need to parallel two power sources, which is detrimental to the stability of the control system.…”

Section: Introductionmentioning

confidence: 99%

Control Strategies of Thrust Ripple Suppression for Electromagnetic Microgravity Facility

Li,

Dong,

et al. 2024

Electronics

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Effect of end leakage inductance on the performance of toroidal winding double‐sided linear induction motors

Zhang,

Luo

2024

IET Electric Power Appl

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The end leakage inductance is an important component in the primary leakage inductance of the equivalent circuit. In order to calculate the end leakage inductance of a toroidal winding double‐sided linear induction motor (TW‐DSLIM) accurately and quickly, the role of ferromagnetic medium is equated by the method of images, the magnetic flux density in the end space is calculated according to the current density of the rectangular coil, end leakage inductance is obtained by calculating the end leakage magnetic energy, the impact of end leakage inductance on the performance of TW‐DSLIM is investigated, and finally the TW‐DSLIM model is established in finite element analysis to verify the effectiveness of the analytical method.

show abstract

A Thrust Ripple Suppression Method for Long-Primary Double-Sided Linear Induction Motors Based on Harmonic Current Injection

Cited by 2 publications

References 17 publications

Control Strategies of Thrust Ripple Suppression for Electromagnetic Microgravity Facility

Control Strategies of Thrust Ripple Suppression for Electromagnetic Microgravity Facility

Effect of end leakage inductance on the performance of toroidal winding double‐sided linear induction motors

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