Current closed‐loop control and field orientation analysis of an induction motor in six‐step operation for railway applications

Fang, Xiaochun; Tian, Zhongbei; Li, Hua; Yang, Zhongping; Lin, Fei; Hillmansen, Stuart

doi:10.1049/iet-pel.2018.5854

Cited by 12 publications

(4 citation statements)

References 32 publications

(41 reference statements)

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“…It can be seen from ( 3) that the injected current is determined by the network's parameters, such as ground admittance and line impedance of the line. In order to realize the control of zero-sequence voltage, the closed-loop control technology of power electronic equipment is adopted [16,17]. The amplitude and phase of the injected current are feedback controlled, and the fault phase voltage is forced to be zero, to achieve the purpose of voltage suppression [18,19].…”

Section: Active Arc Suppression Controlmentioning

confidence: 99%

Active arc suppression device based on voltage‐source convertor with consideration of line impedance in distribution networks

Fan

Wang

et al. 2021

IET Power Electronics

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In the non‐effectively grounding distribution system, residual current under single‐line‐to‐ground (SLG) fault threatens the safety of human being and power supply equipment. Active arc suppression device has been proved to be effective for SLG fault arc suppression when the line impedance is ignored. However, in practice, line impedance varies with the fault location and the load current flowing through the impedance brings about additional voltage drop, which increases the fault current and is not dealt with by the conventional methods. To achieve accurate SLG fault arc suppression with the existence of line impedance, the neutral‐to‐ground voltage reference for full ground‐fault current compensation is firstly derived and a detection method is then proposed. The pre‐fault and post‐fault line currents are used to eliminate the influence of load current on the line impedance voltage drop. A dual‐loop voltage and current controller is then designed. The prototype of active arc suppression device was developed. The results of simulation and prototype experiment validate the effectiveness of the proposed method.

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Section: Active Arc Suppression Controlmentioning

confidence: 99%

Active arc suppression device based on voltage‐source convertor with consideration of line impedance in distribution networks

Fan

Wang

et al. 2021

IET Power Electronics

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“…ω r (k) is the rotor angular speed, and ω sl (k) is the angular speed difference. R s , R r , L s , L r , T r , and σ denote stator resistance, rotor resistance, stator inductance, rotor inductance, rotor electromagnetic constant and electromagnetic leakage coefficient, respectively [24][25].…”

Section: Prediction Modelingmentioning

confidence: 99%

“…ω r ( k ) is the rotor angular speed, and ω sl ( k ) is the angular speed difference. R s , R r , L s , L r , T r , and σ denote stator resistance, rotor resistance, stator inductance, rotor inductance, rotor electromagnetic constant and electromagnetic leakage coefficient, respectively [24–25]. Energy loss prediction model : The energy loss is predicted by

\begin{matrix} true \\ left E_{t o t_x j} ((), S_{m}, k + 1) \\ left = E_{o n / o f f_x j} ((), S_{m}, k + 1) + E_{c o n_x j} ((), S_{m}, k + 1) \end{matrix}

…”

Section: Equivalent Temperature Estimation‐based Fcs‐mpcmentioning

confidence: 99%

Equivalent temperature estimation‐based FCS‐MPC for thermal stress balance of 3L‐NPC traction inverter

Peng

Yang

et al. 2021

IET Power Electronics

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This paper proposes an equivalent temperature estimation-based finite control set model predictive control (ETE-FCS-MPC) method to balance the thermal stress among transistors in three level neutral point clamp (3L-NPC) traction inverters, which can be used to prolong the whole service life and improve the reliability of the traction inverter. Compared with other methods, the proposed ETE-FCS-MPC method requires lesser calculation without additional sensor. Firstly, an energy loss-based equivalent temperature estimation method is proposed to avoid the complexity of junction temperature prediction. Secondly, an energy variance-based thermal stress balance control objective is introduced. Then, a normalized evaluation function is established to select the optimal switching state. Finally, the effectiveness of this method is verified on hardware-in-the-loop tests.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…At present, the control technology mainly uses the integration of proportional-integral (PI) control and proportional-resonant (PR) control or double closed-loop to realize flexible control of power electronic equipment. The fast response speed of PI control [5] and the precise control of PR control [6] to specific frequency are the important reasons for the wide application of these two control methods in the control of power electronic equipment.…”

Section: Introductionmentioning

confidence: 99%

A Novel Fault Current Full Compensation Method in Active Flexible Grounding Distribution Networks

Wang

et al. 2023

J. Phys.: Conf. Ser.

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As the power equipment represented by the inverter is gradually increasing in the power systems, the residual capacitive component of the grounding fault current cannot be ignored. To solve the problem of insufficient compensation for capacitive components in the traditional arc suppression coil grounding mode, a grounding fault current full compensation method based on the active flexible grounding mode was proposed. First, the principle of full compensation in the active flexible grounding mode was analyzed to provide a reference for the injected current of voltage arc suppression full compensation. Then, the inverter control system was designed, and a closed-loop control method was proposed, both of which can ensure the stable target current of the system. Finally, the simulation results compare the fault current compensation difference between the two grounding modes, and the practicability of the proposed compensation method was verified.

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Current closed‐loop control and field orientation analysis of an induction motor in six‐step operation for railway applications

Cited by 12 publications

References 32 publications

Active arc suppression device based on voltage‐source convertor with consideration of line impedance in distribution networks

Active arc suppression device based on voltage‐source convertor with consideration of line impedance in distribution networks

Equivalent temperature estimation‐based FCS‐MPC for thermal stress balance of 3L‐NPC traction inverter

A Novel Fault Current Full Compensation Method in Active Flexible Grounding Distribution Networks

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