DC/DC Conversion Systems Consisting of Multiple Converter Modules: Stability, Control, and Experimental Verifications

Chen, Wu; Ruan, Xinbo; Hong, Yuan; Tse, Chi Kong

doi:10.1109/tpel.2009.2012406

Cited by 340 publications

(104 citation statements)

References 19 publications

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“…Such a solution has many advantages as highlighted in [9]. The overall system availability/reliability is increased, due to redundancy of the key elements and due to the distribution of the electrical and thermal stresses between the stages.…”

Section: Introductionmentioning

confidence: 99%

A multiport medium voltage isolated DC-DC converter

Tran

Dujić

2016

IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society

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Abstract-A multiport medium voltage (MV) isolated DC-DC converter with integrated energy storage, suited for connection of low voltage (LV) and medium voltage (MV) DC grids is presented. A multi-stage structure, adapted for MV ratings, is composed of multiple identical submodules connected in an Input-SeriesOutput-Parallel (ISOP) configuration. Each submodule has three fully bidirectional ports, that are galvanically isolated. This is achieved by means of a three-winding medium frequency transformer, where each leakage inductance combined with a resonant capacitor creates a resonant tank, benefiting from soft switching operation. Each submodule has two additional buck/boost stages, to actively control the power exchange with external DC circuits. The inner resonant stage is operated in open-loop and adapts its mode of operation based on the actual power flow. The remaining ports, dedicated to the storage, can be operated independently from the power flow between the MV and LV side, in order to charge or discharge the storage elements. Switched mode simulations are used to verify and demonstrate various operational modes and performance of the converter.

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Section: Introductionmentioning

confidence: 99%

A multiport medium voltage isolated DC-DC converter

Tran

Dujić

2016

IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society

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“…Modular power conversion systems, with series or parallel converter modules at output and input sides, are classified into four architectures considering their connection forms, namely, input-series output-series (ISOS), input-series output-parallel (ISOP), input-parallel output-series (IPOS), and input-parallel outputparallel (IPOP). The advantages of modular conversion systems include ease of thermal design, each module handles only a part of the total power, straightforward design process, increased system reliability due to reduced thermal and electrical stresses on power switches and components, improved system reliability due to redundancy, lowered cost and ease of expansion, and therefore step by step increase of the system rating [1,2].…”

Section: Introductionmentioning

confidence: 99%

Dynamic analysis of a modular isolated bidirectional dc-dc converter for high power applications

Sedaghati¹,

Hosseini

Sabahi³

et al. 2016

Turk J Elec Eng & Comp Sci

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Abstract:A new configuration for modular isolated bidirectional dc-dc converters is presented. The proposed converter has interesting features such as fewer switching devices, bidirectional power flow, and low switching losses. The simple modular structure, high frequency operation, zero voltage switching (ZVS) capability, and fewer switching devices make the extended configuration of the proposed converter suitable for high power applications. The operation principle of the proposed converter is analyzed in steady state, and then ZVS analysis of the converter is presented in detail. A generalized averaging technique, which uses dc and first order terms of Fourier's series of state variables, is applied to model the converter. A small-signal average model is developed to obtain the control-to-output transfer function of the converter. In order to obtain acceptable dynamic response, closed-loop control of the converter using a PID controller is studied. Finally, measurement and simulation results are presented to verify the operation principles of the converter and effectiveness of the PID controller.

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“…The charging station should be designed to supply large enough output power to shorten the charging time. One common way to solve this problem is to connect chargers in parallel [22]. In fact, it has been shown that compared with a single "large charger", the parallel connection of "small chargers" has many advantages, including high reliability, smaller ripples and higher system bandwidth [23].…”

Section: Introductionmentioning

confidence: 99%

Stationary Charging Station Design for Sustainable Urban Rail Systems: A Case Study at Zhuzhou Electric Locomotive Co., China

Peng

Liu

et al. 2015

Sustainability

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In 2014, more than 43 cities in China were racing to construct their urban rail systems (including metro and light rail systems), recognizing that an urban rail system will be a good solution to the tough problems that they are faced with, including traffic congestion and PM2.5 air pollution. On 22 August 2012, the first electric double-layer capacitor (EDLC) energy storage-type rail vehicle in the world was unveiled at Zhuzhou Electric Locomotive Co., China. The EDLC rail system has been considered a promising sustainable urban rail system, which is expected to further improve the energy efficiency and to reduce environmental pollution. The first commercial EDLC tram produced by Zhuzhou Electric Locomotive Co. has been applied at Guangzhou Metro Corp. recently. From the view point of scientific research, the system design and energy management of EDLC rail systems have been extensively studied in the literature, while the stationary charging station design for the EDLC energy storage-type urban rail vehicles has been rarely reported. Thus, the aim of this paper is to report a stationary charging station that has been successfully applied in the EDLC rail system produced by Zhuzhou Electric Locomotive Co., China.

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DC/DC Conversion Systems Consisting of Multiple Converter Modules: Stability, Control, and Experimental Verifications

Cited by 340 publications

References 19 publications

A multiport medium voltage isolated DC-DC converter

A multiport medium voltage isolated DC-DC converter

Dynamic analysis of a modular isolated bidirectional dc-dc converter for high power applications

Stationary Charging Station Design for Sustainable Urban Rail Systems: A Case Study at Zhuzhou Electric Locomotive Co., China

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