A Simplified Power Conditioner Based on Half-Bridge Converter for High-Speed Railway System

Ma, Fujun; Luo, An; Xu, Xiangyang; Xiao, Huagen; Wu, Chuanping; Wang, Wen

doi:10.1109/tie.2012.2206358

Cited by 100 publications

(65 citation statements)

References 23 publications

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“…From the output port of the FPGA kit, the pulses are amplified to the required gating power level and fed to the respective IGBTs with the help of the connector pins to get the required output voltage waveforms. Although the output frequency should be an integer multiple of input frequency as given by (1), however, the circuit can also work with noninteger multiple of input frequency. The output/input frequency ratio depends on the clock frequency of the FPGA kit.…”

Section: Resultsmentioning

confidence: 99%

“…T HE continuous need for an increased power density leads to a growing demand for high-speed motors [1]. The benefits of replacing low-torque dc motors with lighter and more efficient 400-Hz ac machines for applications such as electric fans, fuel pumps, or blower motors are well known, and existing dc/ac inverters are being replaced with highfrequency ac/ac converters for high-torque ac machines [2]- [5].…”

Section: Introductionmentioning

confidence: 99%

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A Novel Soft Switched Cycloinverter

Kumar

Agarwal

2015

IEEE Trans. Ind. Electron.

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A novel soft switched insulated-gate bipolar transistor (IGBT)-based cycloinverter, which is capable of converting voltage at the main frequency to voltage at high frequency, is proposed to improve the previously proposed pulse width modulation cycloinverter. An auxiliary switch, along with an inductor, is used to have simultaneous zerocurrent switching and zero-voltage switching for turn-on transitions of the IGBT in order to mitigate the internal losses and total harmonic distortion factor in the inverter. The principle of operation and design consideration are presented. The proposed cycloinverter is compared with a conventional hard switched cycloinverter, and it has been demonstrated that the losses have been reduced approximately 50% by this new switching technique and the efficiency of the inverter is increased significantly. A prototype of the cycloinverter is developed in the laboratory for verification of the simulation results. Experimental results are found in good agreement to the simulated results. IndexTerms-AC-AC power conversion, fieldprogrammable gate arrays (FPGAs), harmonic analysis.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Novel Soft Switched Cycloinverter

Kumar

Agarwal

2015

IEEE Trans. Ind. Electron.

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“…In the control process for the utilization of RBE in the whole railway line using the modified system, the loss of the RBE in the lines and the power converters is unavoidable. The line loss of the RBE in the flow process is small, accounting for approximately 0.2% [48]. Therefore, the line loss was ignored and the efficiency of the converters alone was considered in this paper.…”

Section: Algorithm Principlesmentioning

confidence: 99%

Energy-Storage-Based Smart Electrical Infrastructure and Regenerative Braking Energy Management in AC-Fed Railways with Neutral Zones

Gao

et al. 2019

Energies

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This paper presents a modified power supply system based on the current alternating current (AC)-fed railways with neutral zones that can further improve the eco-friendliness and smart level of railways. The modified system complements the existing infrastructure with additional energy-storage-based smart electrical infrastructure. This infrastructure comprises power electronic devices with energy storage system connected in parallel to both sides of each neutral zone in the traction substations, power electronic devices connected in parallel to both sides of each neutral zone in section posts, and an energy management system. The description and functions of such a modified system are outlined in this paper. The system allows for the centralized-and distributed-control of different functions via an energy management system. In addition, a control algorithm is proposed, based on the modified system for regenerative braking energy utilization. This would ensure that all the regenerative braking energy in the whole railway electrical system is used more efficiently. Finally, a modified power supply system with eight power supply sections is considered to be a case study; furthermore, the advantages of the proposed system and the effectiveness of the proposed control algorithm are verified.The installation of equipment that provide clean energy from renewable sources (e.g., solar panels and wind generators) to feed the traction loads in rail may have a significant impact in the energy costs and CO 2 emissions of a railway system, increasing the environment friendliness of the railway [4][5][6]. The introduction of renewable energy is to partially reduce the depletion of non-renewable energy resources and thus reduce CO 2 emissions. These outcomes have been favored by scholars and many countries, such as North American, European, China, and Japan [6,7]. But in practice, the traction energy consumption of railways has not been reduced.By contrast, the efficient driving and regenerative braking schemes differ the renewable energy scheme. They can essentially reduce the traction energy consumption of railways.Efficient driving is an effective way to reduce the traction energy consumption of rolling stock. Typically, the running state of vehicles comprises three phases: braking, speed-holding (cruising) and acceleration. At present, many literatures have studied the efficient driving and realize the traction energy savings through the optimum combination of these phases [8][9][10][11][12][13]. To implement such trajectories and maximize savings, some auxiliary systems, such as driver advisory systems (DAS) [10,11] and automatic train operation (ATO) [12,13], must be provided to drivers. The trials of such systems have shown savings of 5-18%. However, with efficient driving, the savings of energy consumption may sacrifice service quality, such as the train speed, stopping time, etc. [1].Regenerative braking energy (RBE) recovery is a simple and efficient way to reduce energy consumption, which cannot influence the operati...

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“…Therefore, if the RBE cannot be used by the traction trains in the same power supply sector, a large amount of RBE is fed back to the power system through the traction substation (TS). As a result, there is a great impact on the utility grid [6][7][8], which can not only lead to an increase in the catenary voltage but also affect the safe operation of the utility grid. At the same time, this situation can also increase the loss of the RBE in the transmission line and reduce the effective utilization rate.…”

Section: Introductionmentioning

confidence: 99%

An Optimized Regulation Scheme of Improving the Effective Utilization of the Regenerative Braking Energy of the Whole Railway Line

Gao

et al. 2019

Energies

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With respect to the problems of great impact on the utility grid, the increasing catenary voltage, the limited utilization rate of the regenerative braking energy (RBE) and the irreducible cost of electricity for locomotives caused by the RBE generated by electric locomotives of the whole railway line cannot be fully utilized in traction power supply systems. An energy management system (EMS) integrating electrical energy and information is proposed in this paper. A corresponding optimization algorithm is also proposed to calculate the distribution of the regenerative braking power in the whole railway line. The structure and working principle of the EMS are introduced. The basic principle and detailed steps of the proposed algorithm are given. Finally, the optimization calculation and simulation are carried out, the effectiveness and feasibility of the proposed EMS and the optimization algorithm are verified.

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A Simplified Power Conditioner Based on Half-Bridge Converter for High-Speed Railway System

Cited by 100 publications

References 23 publications

A Novel Soft Switched Cycloinverter

A Novel Soft Switched Cycloinverter

Energy-Storage-Based Smart Electrical Infrastructure and Regenerative Braking Energy Management in AC-Fed Railways with Neutral Zones

An Optimized Regulation Scheme of Improving the Effective Utilization of the Regenerative Braking Energy of the Whole Railway Line

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