Windowed SHE-PWM of Interleaved Four-Quadrant Converters for Resonance Suppression in Traction Power Supply Systems

Song, Kejian; Konstantinou, Georgios; Wang, Mingli; Acuna, Pablo; Aguilera, Ricardo P.; Agelidis, Vassilios G.

doi:10.1109/tpel.2016.2636882

Cited by 37 publications

(31 citation statements)

References 29 publications

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“…The alternative solution for resonance suppression is from the perspective of the traction drive system. For example, online and offline optimal PWM schemes are proposed to eliminate resonance harmonics [6][7][8][9], but these schemes are sensitive to the traction networks' parameters. Additionally, the Class-120 locomotives in German railways implement a tuned harmonic filter between the pantograph voltage winding of the input transformer (see Figure 1a).…”

Section: Introductionmentioning

confidence: 99%

A Novel Harmonic Suppression Traction Transformer with Integrated Filtering Inductors for Railway Systems

Liu

Shuai

et al. 2020

Energies

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This study analyzes and evaluates the feasibility of a harmonic suppression traction transformer (HSTT) for harmonic reduction in railway systems. This new type of transformer can improve the power quality of railway systems by preventing high-frequency harmonic currents from injecting into the traction grid. As the physical size of available space in high-speed trains is strictly limited, low space-occupying filtering techniques are needed. Therefore, an HSTT with integrated filtering inductors (IFIs) capable of being implemented in regular trains is proposed. Taking advantage of the HSTT, a specially constructed inductive-capacitive-inductive (LCL)-type filter is used for harmonic suppression instead of a regular LCL-type filter. The proposed filter is composed of an integrated inductor, leakage inductor of the traction transformer, and an external filter capacitor. In this paper, we analyze the topology of the proposed system, construct a mathematical model to reveal the magnetic decoupling theory of IFIs, and discuss the design and calculation procedures of the HSTT with IFIs. The field circuit coupling simulation of the HSTT with IFIs is performed to validate the effectiveness of the proposed system. Finally, the practical operation based on a 10 kVA prototype shows that the proposed scheme can not only suppress the high-order frequency harmonics but also decrease the installed space of filter devices.

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Section: Introductionmentioning

confidence: 99%

A Novel Harmonic Suppression Traction Transformer with Integrated Filtering Inductors for Railway Systems

Liu

Shuai

et al. 2020

Energies

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“…From (6), the power grid virtual flux-linkage components along and coordinate axes can be obtained. But there exists pure integral link in (6). If the pure integrator is adopted in the observer of power grid virtual flux, its integral initial value and cumulative deviation should be properly considered.…”

Section: Improved Virtual Flux-linkage Observermentioning

confidence: 99%

“…To simplify the complex coordinate transformation, the instantaneous power of DPC system should always be estimated in stationary coordinate system. According to (6), the virtual flux-linkage is observed, and then, combining the relationship = / , the estimation of power grid voltage vector can be expressed as follows:…”

Section: Power Grid Voltage Estimation Based On Virtual Fluxlinkagementioning

confidence: 99%

“…When the PWM rectifier technology is applied to back to back converter, photovoltaic grid connected inverter, power active filter, and so on, the power factor of system can be improved greatly, and the harmonic and reactive pollution to the grid can be effectively reduced [1,3,4]. And then, it has a broad application prospects in modern power system and equipment [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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Direct Power Control Strategy of PWM Rectifier Based on Improved Virtual Flux-Linkage Observer

2017

Journal of Control Science and Engineering

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In order to achieve the low cost and high performance control of three-phase PWM rectifier, a direct power control (DPC) strategy based on a new-style virtual flux-linkage observer is proposed. The model of three-phase PWM rectifier and the principle of virtual flux-linkage vector control are introduced firstly. Then, in order to avoid the effect of integral initial value and cumulative deviation, three first-order low-pass filters are cascaded to replace the pure integral link; an improved virtual flux-linkage observer of threephase power grid is presented. From the observed virtual flux-linkage, the voltage and instantaneous power of three-phase power grid are online estimated. On this basis, the power grid voltage sensorless direct power control system of three-phase PWM rectifier is designed. Simulation results have shown that, both in the rectifying state and in the inverting state, the power grid side current and the DC side voltage of three-phase PWM rectifier all can be effectively controlled; the high power factor operation of three-phase PWM rectifier is realized.

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“…In 2017, the HX D 2 electric locomotive caused a resonance accident at Datong substation in China, leading to the tripping operation of the locomotive. The accident frequency is 1750 Hz . The frequency of harmonic current focuses on 150 Hz, 250 Hz, 350 Hz etc., as well as the high‐order frequency around integral multiple of the switching frequency.…”

Section: Introductionmentioning

confidence: 99%

A novel locomotive auxiliary converter control strategy with harmonic suppression for avoiding resonance voltage accidents in an electrified railway

Yang

Lin

et al. 2019

IEEJ Transactions Elec Engng

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In recent years, the AC-DC-AC electric locomotives have been wildly applied in electrified railways, deteriorating the current quality of network. Therefore, filters in electrified railways are essential. However, considering the volume and weight of filters, it is inappropriate to install them on locomotives. And resonance accident caused by high-frequency harmonics is hard to suppress because of the low switching speed of high-power Si-based devices. In this article, a novel locomotive auxiliary converter control strategy with harmonic suppression function is proposed to filter harmonic currents injected into the traction supply network. By controlling the auxiliary converter, the strategy could complete the function of rectification and filtering, converting power for auxiliary equipment, filtering the harmonic current, and suppressing resonance accidents with the high-frequency characteristics of SiC devices. For compensating high-frequency harmonics, the parameters of main circuit and control scheme are analyzed to ensure a stable system. The feasibility of the scheme is verified by simulation and RT-LAB hardware-in-loop experiment.

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Windowed SHE-PWM of Interleaved Four-Quadrant Converters for Resonance Suppression in Traction Power Supply Systems

Cited by 37 publications

References 29 publications

A Novel Harmonic Suppression Traction Transformer with Integrated Filtering Inductors for Railway Systems

A Novel Harmonic Suppression Traction Transformer with Integrated Filtering Inductors for Railway Systems

Direct Power Control Strategy of PWM Rectifier Based on Improved Virtual Flux-Linkage Observer

A novel locomotive auxiliary converter control strategy with harmonic suppression for avoiding resonance voltage accidents in an electrified railway

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