A Novel Grid-Integration Technique for IPT based EV Chargers
| Autor: | Gaurav R. Kalra, Duleepa J. Thrimawithana, Martin Neuburger |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Electrolytic capacitor
business.product_category Computer science business.industry 020208 electrical & electronic engineering 05 social sciences Electrical engineering Topology (electrical circuits) 02 engineering and technology Grid Power (physics) law.invention Capacitor law Electric vehicle 0202 electrical engineering electronic engineering information engineering Maximum power transfer theorem 0501 psychology and cognitive sciences business 050107 human factors Voltage |
| Zdroj: | 2018 IEEE Energy Conversion Congress and Exposition (ECCE). |
| DOI: | 10.1109/ecce.2018.8558268 |
| Popis: | In recent years, Inductive Power Transfer (IPT) has been successfully applied in a variety of different industrial and consumer applications. The most notable application to-date is Electric Vehicle (EV) charging. However, the grid integration of IPT based EV chargers still remains a challenge. Traditionally, the primary side employs two or more power conversion stages separated by a large bank of electrolytic capacitors, known as the multi-stage approach. Although this approach is widely used, it suffers from a high component count, low power density, and decreased reliability due to the use of electrolytic capacitors. As such, this paper proposes a novel single-stage grid integration technique for IPT based EV chargers, termed as the Boost AC Bridge (BACB) topology. Since the proposed technique utilizes just one power conversion stage, the component count of the converter is greatly reduced. Unlike a matrix converter, the BACB topology presents natural freewheeling paths for both grid and output currents, while being able to generate a significantly higher voltage to drive the primary magnetic coupler of the IPT system. Furthermore, the BACB utilizes two soft-DC bus capacitors, which are cycled 180 degrees out phase with respect to each other, to minimize the output power ripple. This paper also presents a closed loop control scheme for regulating the output power and the grid current. Simulation results of a 3 kW system were obtained using PLECS, and are presented in order to validate the viability of the proposed technique. |
| Databáze: | OpenAIRE |
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