Impedance Based Stabilization Control Method for Reduced DC-Link Capacitance IPMSM Drives

Zhao, Nannan; Wang, Gaolin; Ding, Dawei; Zhang, Guoqiang; Xu, Dianguo

doi:10.1109/tpel.2019.2891359

Cited by 23 publications

(16 citation statements)

References 33 publications

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“…According to (20), the bode plot of the closed-loop input impedance is presented in Figure 4. The characteristics of the input impedance are summarized as follows:…”

Section: _ˆ( ) ( ( )mentioning

confidence: 99%

“…In [19], the feedback of the dcvoltage is injected into the q-axis current reference to increase the stability. In [20], the damping control for the inverter with the PMSM drive is designed by the inductor current feedback to the q-axis current reference. The stabilizers in [19] and [20] are both realized by the band-pass filter, which has less effect on the control loops.…”

Section: Introductionmentioning

confidence: 99%

“…In [20], the damping control for the inverter with the PMSM drive is designed by the inductor current feedback to the q-axis current reference. The stabilizers in [19] and [20] are both realized by the band-pass filter, which has less effect on the control loops. However, the existing impedance shaping methods can improve the stability of the dc-link voltage, but the coefficient of the compensator requires a trade-off between the stability and load dynamic performance.…”

Section: Introductionmentioning

confidence: 99%

“…However, this method is only implemented for the dc/dc converter. Besides, all the methods mentioned above [15]- [20] are focusing on the drive system. The application in dc microgrids consists of the POL converter feeds a linear three-phase load that needs to be further discussed.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Impedance-Shaping-Based Stability Control of Point-of-Load Converter Integrated With EMI Filter in DC Microgrids

Liao

Zhang

2022

IEEE Access

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The point-of-load (POL) converters integrated with the input LC filter are essential to supply the ac load in the dc microgrid. The interaction between the LC filter and the POL converter will bring instability problems to the dc-link voltage. This paper proposes a series-connected virtual impedance regulator based on the detailed small-signal model of the POL converter that feeds a linear three-phase load. The proposed method can improve the stability by modifying only the phase of the input impedance of the POL converter within the interaction frequency range. Therefore, the impact of the regulator on the converter's dynamic performance is minimized. The experiments show that the proposed stabilization methods exhibit good performance under different linear load scenarios.INDEX TERMS dc microgrids, stability, constant power load (CPL), impedance modeling, virtual impedance regulator.

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“…According to (20), the bode plot of the closed-loop input impedance is presented in Figure 4. The characteristics of the input impedance are summarized as follows:…”

Section: _ˆ( ) ( ( )mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Impedance-Shaping-Based Stability Control of Point-of-Load Converter Integrated With EMI Filter in DC Microgrids

Liao

Zhang

2022

IEEE Access

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show abstract

“…An inverter‐current‐feedback resonance‐suppression method was proposed to damp the LCL resonant peak value in [35]. A stabilization control method based on the grid current feedback loop was proposed in [36], where the relationship between the drive system stability and the grid current harmonics suppression was analyzed by the impedance model. The damping current was extracted from the grid current directly and injected into the q ‐axis voltage reference to suppress the LC resonance effectively.…”

Section: Introductionmentioning

confidence: 99%

Grid input current feedback active damping control method for IPMSM drives with small DC‐link capacitor

Yin

Luo

et al. 2021

IET Power Electronics

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With large input line inductance and low dc‐link capacitance, the small dc‐link drive system shows an instability problem, which is mainly caused by LC resonance between the line side inductor and the dc‐link film capacitor. This paper proposes a grid current feedback active damping control method to improve system stability and suppress the LC resonance. The feedback variables are analyzed, and the detected grid current is selected. Thus, the damping current is consistent with the LC resonance components in grid current, which benefits the drive system power factor and grid current quality. Furthermore, the grid current feedback control loop has been established, and the feedback gain is designed based on system parameters that can be adjusted to fit different systems. The stability margin and robustness of the drive system to the changes in line inductance and dc‐link capacitance are improved. Compared with the conventional voltage‐based damping method, the power factor is increased to 0.984 and the grid current harmonics are reduced to satisfy the requirements of EN61000‐3‐2. The effectiveness of the proposed active damping method is verified by the experimental results.

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DC‐link voltage control of small capacitor PMSM drive system based on MPC algorithm

Song

Lin

2023

Circuit Theory & Apps

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SummaryThe permanent magnet synchronous motor (PMSM) drive system with small dc‐link capacitor will have the problem of unstable drive system due to the small damping of the LC filter and the negative impedance characteristics of the constant power load. The input LC filter can suppress interference and is essential for the normal operation of the drive, but it may not match the impedance of the post‐stage inverter, causing the drive system to become unstable. In this paper, by constructing the dc‐link voltage prediction model, combined with the PMSM current predictive control, the weighted cost function of the model predictive control (MPC) strategy is designed to realize the motor optimal control and the dc‐link voltage fluctuation suppression control. To avoid introducing additional sensors when constructing the dc‐link voltage model, a source state observer that can estimate the dc‐link voltage and input current is constructed. Simulation and experimental results are provided to verify the effectiveness of the proposed method.

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Impedance Based Stabilization Control Method for Reduced DC-Link Capacitance IPMSM Drives

Cited by 23 publications

References 33 publications

Impedance-Shaping-Based Stability Control of Point-of-Load Converter Integrated With EMI Filter in DC Microgrids

Impedance-Shaping-Based Stability Control of Point-of-Load Converter Integrated With EMI Filter in DC Microgrids

Grid input current feedback active damping control method for IPMSM drives with small DC‐link capacitor

DC‐link voltage control of small capacitor PMSM drive system based on MPC algorithm

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