Electrical magnetic hybrid power quality compensation system for V/V traction power supply system

Chen, Baichao; Zhang, Chenmeng; Zeng, Wenjun; Xue, Gang; Tian, Cuihua; Yuan, Jiaxin

doi:10.1049/iet-pel.2014.0830

Cited by 26 publications

(10 citation statements)

References 24 publications

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“…The RPC is used to transfer the active power between two different power supply arms; as a result, the three-phase current on the primary side of the traction transformer (TT) can be balanced. The topology and control method of the RPC was studied in [12][13][14][15][16]. The RPC has good dynamic characteristics and has been widely adopted due to its universality.…”

Section: Introductionmentioning

confidence: 99%

Energy storage traction power supply system and control strategy for an electrified railway

Chen

Cheng

et al. 2020

IET Generation, Transmission & Distribution

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Section: Introductionmentioning

confidence: 99%

Energy storage traction power supply system and control strategy for an electrified railway

Chen

Cheng

et al. 2020

IET Generation, Transmission & Distribution

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“…Because the cost of passive devices is much lower than that of power electronics devices, some hybrid compensation schemes are proposed to reduce the total compensation costs. TCR, TSC and FC are typical representatives of passive devices, which are commonly used to compensate reactive power and filter low-order harmonics [22]- [26]. Magnetic controlled reactor (MCR) is also adopted instead of the traditional passive device [20], [21].…”

Section: Introductionmentioning

confidence: 99%

Hybrid Power Quality Compensation System for Electric Railway Supplied by the Hypotenuse of a Scott Transformer

et al. 2020

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To solve the three-phase unbalance and reactive power problems in the electric railway power supply system, this paper proposes a Scott transformer based hypotenuse hybrid traction power system (Scott-HHPS). Compared with other co-phase traction power supply systems, the Scott-HHPS could achieve the same compensation objective with smaller active compensation capacity. The paper analyzes the basic principle and makes a comparison between the Scott-HHPS and typical co-phase power supply system. The mathematical relationships among the load current, power factor and capacity demand in condition of power factor variation and regenerative braking are analyzed. In order to further reduce the compensation capacity of the Scott-HHPS, the partial compensation strategy in respect to the index of power factor and unbalance is proposed. Besides, an instantaneous current detection method based on the theorem of conservation of power is adopted to simplify the control algorithms. Simulations and experiments are both constructed and the results demonstrate that the Scott-HHPS can effectively improve the power quality in the electric railway power supply system.

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“…The bullet trains of the high-speed railway can generate energy feedback when they brake, which should not be neglected, for the power of the regenerative braking energy is almost 75% of the traction power [1]. The unbalance current may increase the capacity of the traction transformer, thereby decreasing the output power of the electric generator and increasing the loss of the electric transmission line, and so on [2].…”

Section: Introductionmentioning

confidence: 99%

Collaborative unbalance compensation method for high‐speed railway traction power supply system considering energy feedback

Yuan

Xiao

Zhang³

et al. 2019

IET Power Electronics

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The unbalance current issue of the high-speed railway is the most prominent power quality of the traction power supply systems. Bullet trains can generate energy feedback when they brake, which should not be neglected. In this study, the effects of energy feedback on the unbalance issue are analysed, under different operating conditions of the trains. A collaborative unbalance compensation method (CUCM) for the high-speed railway is proposed in this work to lower the compensation capacity of the expensive power electronics compensation devices. To ensure that the CUCM works well, a further analysis of the two compensation principles, the railway power conditioner principle and Steinmetz principle, was carried out. The analysis results showed that the two compensation principles have different implementation methods and compensation current expressions, but the compensation essences were the same. According to the principle analysis results, a collaborative strategy was used. A capacity analysis of the CUCM, based on the actual operating situations of the bullet trains, was also completely done in this study. The simulation and experimental results showed that the proposed CUCM could adequately compensate the unbalance current of the high-speed railway power systems well with a low cost, in both traction and energy feedback situations.

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Electrical magnetic hybrid power quality compensation system for V/V traction power supply system

Cited by 26 publications

References 24 publications

Energy storage traction power supply system and control strategy for an electrified railway

Energy storage traction power supply system and control strategy for an electrified railway

Hybrid Power Quality Compensation System for Electric Railway Supplied by the Hypotenuse of a Scott Transformer

Collaborative unbalance compensation method for high‐speed railway traction power supply system considering energy feedback

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