Development of Non-Smoothed DC-link based AC-DC Power Conversion System for Inductive Power Transfer

2014 Fiscal Year Final Research Report

• Project/Area Number: 25820103
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Power engineering/Power conversion/Electric machinery
• Research Institution: Kobe University
• Principal Investigator: MISHIMA Tomokazu 神戸大学, 海事科学研究科(研究院), 准教授 (40370019)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 非接触給電 / パワーコンバータ / 共振形電力変換 / 電解コンデンサレス / 高効率電力変換 / 電磁誘導

Outline of Final Research Achievements

This research has dealt with a high-efficiency power conversion circuits suitable for inductive power transfer (IPT) without a bulky smoothing dc-link filter. In the first stage of the research, the new type of utility frequency (UF)- high frequency (HF) ac -ac power converter with voltage boost and power factor correction (PFC) has been developed, and evaluated in experiment. The high-efficiency over 95% has been demonstrated in the 3kW prototype circuit due to the smoothing dc-link capacitor-less circuit topology.
The second stage of the research has been dedicated for development and evaluation of HFAC (DC)-DC power converter in contact-less power process for IPT. The high-efficiency power conversion over 95% has been attained in the 2.5kW IPT prototype due to the series-series resonant circuit configuration.
The total power conversion efficiency can be expected about 90% by utilizing the newly-devopoed two power converters applicable for IPT.

Free Research Field

パワーエレクトロニクス