带有LC正弦波滤波器的内置式永磁同步电机电流控制器谐振抑制参数设计

doi:10.19595/j.cnki.1000-6753.tces.221734

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Abstract

Interior permanent magnet synchronous motor (IPMSM) is usually powered by voltage source inverter (VSI). The fast switching action of power switching devices leads to a large voltage change rate (du/dt), which brings about some negative effects that can not be ignored, such as the increase of insulation stress of the motor, the induction of shaft voltage and shaft current, and the generation of prominent electromagnetic interference. In some special industrial application scenarios, such as marine survey, oil field drilling, mining, etc., the VSI installation location is far away from the IPMSM, and the “long-line effect” makes the above-mentioned negative effects more prominent. LC sinusoidal filter can convert VSI output voltage into sine wave, which is applicable to any length of cable and can effectively solve the above problems. However, the addition of LC sine wave filter increases the order of the system model, and will produce inherent resonance phenomenon in the current loop, which poses a challenge to the current controller design of IPMSM.
With applying flux-oriented control, resonance suppression can be achieved theoretically by introducing active damping (AD) into the current controller. When the AD is introduced into the IPMSM current controller with LC sinusoidal filter, the setting of proportional integral (PI) control parameters and AD coefficient used in the current loop is critical to the stability of the system. However, there are few research results on the resonance suppression parameter design of AC motor current controller with LC sinusoidal filter in the existing literature. The PI controller parameters, AD coefficient, IPMSM parameters and LC sinusoidal filter parameters are coupled with each other. If the controller parameters are set unreasonably, the resonance phenomenon of the system will not be effectively suppressed, which will lead to high voltage and current in the drive system and bring great risks to the operation of the system.
In order to obtain satisfactory resonance suppression effect and guarantee the control performance of the IPMSM with LC sinusoidal filter, the parameters of the current controller must be reasonably designed. This paper studies the design method of resonance suppression parameters of the current controller for IPMSM with LC sinusoidal filter, analyzes the frequency characteristics of the current controller with capacitor-current-feedback AD (CCFAD), and analyzes the influence mechanism of current proportional integral regulator, AD coefficient, LC filter parameters, and motor parameters on the system resonance phenomenon through the stability criterion in frequency domain. The design method of resonance suppression parameters of current controller is accordingly given by analyzing the mathematical models in s and zdomain. The experimental results show that the IPMSM drive system can obtain excellent steady-state and dynamic performance by using the proposed parameter design method.
The paperisorganizedasfollows. The mathematical model of the IPMSM with LC sinusoidal filter is given in the first section, the resonance phenomenon and resonance suppression strategy based on CCFAD are analyzed in the second section, the design method of the resonance suppression parameters of the current controller is proposed in the third section, and the experimental results are shown in the fourth section.

Key words： Interior permanent magnet synchronous motor LC sinusoidal filter proportional integral regulator active damping current controller

Received: 12 September 2022

PACS:

TM351

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	Wuxiang
	Li Chao
	Liu Zhiheng
	Han Yaofei
	He Fengyou

Cite this article:

Wuxiang,Li Chao,Liu Zhiheng等. Parameter Design of the Current Controller for Interior Permanent Magnet Synchronous Motor With LC SinusoidalFilter to Suppress Resonance[J]. Transactions of China Electrotechnical Society, 0, (): 90-90.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.221734 OR https://dgjsxb.ces-transaction.com/EN/Y0/V/I/90

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