An intelligent power module with high accuracy control system and direct liquid cooling for Hybrid system
Conference: PCIM Europe 2014 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/20/2014 - 05/22/2014 at Nürnberg, Deutschland
Proceedings: PCIM Europe 2014
Pages: 8Language: englishTyp: PDF
Personal VDE Members are entitled to a 10% discount on this title
Authors:
Higuchi, Keiichi; Kitamura, Akio; Arai, Hirohisa; Ichimura, Takeshi; Gohara, Hiromichi; Nishiura, Akira (Fuji Electric Co., Ltd, 4-18-1, Tsukama, Matsumoto, Nagano, Japan)
Dietrich, Peter (Fuji Electric Europe GmbH., Geothering 58. 63067 Offenbach, Germany)
Abstract:
We have developed an intelligent power module (IPM) with high accuracy control system and direct liquid cooling for HEV (Hybrid Electric Vehicle) and PHEV (Plug-in Hybrid Electric Vehicle).The IPM contributes to most efficient fuel consumption of the HEV and PHEV. An Aluminum direct liquid cooling fin structure improves thermal resistance by over 20% compared to the conventional indirect liquid cooling structure. Furthermore a new Sn-Sb solder has been developed to improve thermal cycle capability. The tensile strength and yield strength of this new solder is about 20% higher than conventional Sn-Ag-Cu solder. The highly accurate control system with CPU in the control circuit corrects the error of a temperature sensor on the IGBT chip within +-3 oC. It also controls the buck-boost converter by using a voltage sensor and the accuracy of the output voltage is controlled under +-2%. The system is communicated to the master ECU. The IPM’s maximum output power is 400kVA and it is applied in a HEV system to drive 124kW motor output.