Decoupled Reference-Voltage-Based Active DC-Link Stabilization for PMSM Drives With Tight-Speed Regulation

Mohamed, Yasser; Radwan, Amr Ahmed A.; Lee, T. K.

doi:10.1109/tie.2011.2182013

Cited by 104 publications

(34 citation statements)

References 16 publications

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“…However, when x r increases larger, then R becomes small and is smaller than kZ o ðsÞk, the system becomes unstable. [2,[23][24][25] Modifying (11) so that…”

Section: Linear Methodsmentioning

confidence: 99%

“…2. 1) Modify the output impedance of the upstream circuit Z o ðsÞ by increasing the bandwidth of the control loop of the upstream converter [13], or by adding an extra damping loop [14][15][16][17][18][19][20][21]. 2) Modify the input impedance of the CPL, Z in ðsÞ by injecting a stabilizing current into the CPL [2,[22][23][24][25][26][27][28]. 3) Add an auxiliary power electronic circuit between the upstream and downstream circuits and control the input impedance of the auxiliary power electronic circuit, Z a ðsÞ.…”

Section: Introductionmentioning

confidence: 99%

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Active stabilization methods of electric power systems with constant power loads: a review

2014

J. Mod. Power Syst. Clean Energy

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Modern electric power systems have increased the usage of switching power converters. These tightly regulated switching power converters behave as constant power loads (CPLs). They exhibit a negative incremental impedance in small signal analysis. This negative impedance degrades the stability margin of the interaction between CPLs and their feeders, which is known as the negative impedance instability problem. The feeder can be an LC input filter or an upstream switching converter. Active damping methods are preferred for the stabilization of the system. This is due to their higher power efficiency over passive damping methods. Based on different sources of damping effect, this paper summarizes and classifies existing active damping methods into three categories. The paper further analyzes and compares the advantages and disadvantages of each active damping method.

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“…However, when x r increases larger, then R becomes small and is smaller than kZ o ðsÞk, the system becomes unstable. [2,[23][24][25] Modifying (11) so that…”

Section: Linear Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Active stabilization methods of electric power systems with constant power loads: a review

2014

J. Mod. Power Syst. Clean Energy

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“…Nonlinear control methods are also used to solve this problem based on synergetic control [16], sliding mode control [17,18], phase-plane analysis [19] and T-S multi-modeling [20]. A compensation method using output voltage has been presented in [7,9], use of a virtual resistance and virtual inductance were presented in [21,22], use of a virtual capacitor was introduced in [8,23], and a global stabilization method using Lyapunov equation is proposed in [24]. This paper presents a novel stabilizer technique to suppress the oscillation and stabilize the system.…”

Section: Power System Modelmentioning

confidence: 99%

Analysis and Design of an Active Stabilizer for a Boost Power Converter System

et al. 2016

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Abstract:In electrical power converter systems, the presence of an LC input filter can efficiently reduce the Electromagnetic Interference (EMI) effect, and at the same time protect the converter and the load from being impacted by sharp input impulse voltages. However, for transportation applications, the weight and size limitations of input LC filters for power converters have to be taken into consideration. The reduction of LC filter size may impair the system stability margin and dynamic response. In serve cases, the system may even become unstable. Thus, in order to ensure the system stability while minimizing the input LC filter size, the implementation of a stabilizer for the system control is needed. In this paper, a novel digital stabilizer design method is proposed for a boost power converter with a small input LC filter. The proposed method is based on input filter inductance current measurements and DSP (Digital Signal Processor) -based digital stabilizer design. Simulation and experimentation confirm the validity of the proposed approach.

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“…Furthermore, as electrolytic capacitors have a short life time. There is a decreased reliability of power-conversion systems [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…Small-capacity inverter systems are beneficial in applications such as fans, pumps, and compressors, where the load variation is not significant [10][11][12]. To improve the quality of the input current caused by small capacitors, many researchers have studied various control techniques, including the use of the pulse-power injection method, outputcurrent compensation technique, and harmonic injection technique [3,4,[6][7][8][9][10][11][12][13][14][15]. In the case of [8], the output-current compensation method distorted the output current in order to improve the input current.…”

Section: Introductionmentioning

confidence: 99%

Design and Control of Small DC-Link Capacitor-Based Three-Level Inverter with Neutral-Point Voltage Balancing

In¹,

Kim

Lee

2018

Energies

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This paper presents a method to improve the quality of input-output currents in a three-level neutral-point clamped (NPC) inverter with small direct current-link (DC-link) capacitor systems. The inverter systems with the small DC-link capacitors have several advantages in terms of cost, volume, life-time, and reliability when compared to inverters that use large DC-link capacitors. However, there are problems with respect to the deterioration of the input current quality and a severe ripple of neutral-point voltage (NPV), which can cause an aggravated output current. To mitigate these issues, an additional circuit is applied for the input current shaping and a compensation algorithm is applied to reduce the ripple voltage of NPV. The effectiveness of the proposed design and control method is verified with various simulation and experimental results.

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Decoupled Reference-Voltage-Based Active DC-Link Stabilization for PMSM Drives With Tight-Speed Regulation

Cited by 104 publications

References 16 publications

Active stabilization methods of electric power systems with constant power loads: a review

Active stabilization methods of electric power systems with constant power loads: a review

Analysis and Design of an Active Stabilizer for a Boost Power Converter System

Design and Control of Small DC-Link Capacitor-Based Three-Level Inverter with Neutral-Point Voltage Balancing

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