EPE Association: EPE 2007 - Subtopic 16-1

EPE 2007 - Subtopic 16-1 - LS: Automotive
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2007 - Conference > EPE 2007 - Topic 16: 'Electrical systems in aerospace, space, surface and marine transport' > EPE 2007 - Subtopic 16-1 - LS: Automotive

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   Power Stage for Permanent Magnet Synchronous Motors in High Current Automotive Applications
By GRAOVAC Dusan; PUERSCHEL Marco; KIEP Andreas [View]
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Abstract: This paper focuses on the Driver-IC and the MOSFETs in inverter used in automotive applications to control a permanent magnet AC-motor with the focus on high current handling capability and high reliability for safety critical applications. The features of the Driver IC together with latest MOSFET technologies will be discussed.

   Integration of Supercapacitors as Transient Energy Buffer in Automotive Power Nets
By BRÃ–SSE Andreas; DOMORAZEK Gottfried; POLENOV Dieter; LUTZ Josef; PRÃ–BSTLE Hartmut [View]
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Abstract: Load fluctuations in an automotive power net can cause significant perturbations of the supply voltage. A quality improvement for the electrical power supply can be achieved by connecting supercapacitors in parallel to the battery as a transient energy buffer. Effective voltage stabilisation and steadier generator output current were observed in an experimental investigation of such a power net modification. In addition to the increase of the peak power capability of the power net, charge throughput and rms-current in the battery were reduced. A concept and operation strategy aiming automotive requirements for the integration of supercapacitors into the power net are proposed. The resulting system was named "dynamic power assistance".

   Power Electronics for Hybrid-Drive Systems
By WOLF JÃ¼rgen; RENKEN Folker [View]
[Download]

Abstract: Today many car manufacturers consider automobiles with combined drive systems consisting of combustion engine and electrical machine as a trend-setting concept. These hybrid vehicles are characterized by its good driving dynamics, economical fuel consumption and environmental-friendliness. Depending on performance class and drive structure, there are different systems available: micro-hybrid, mild-hybrid, full-hybrid, series-hybrid and also series/parallel-hybrid. Due to this large variety of drive systems Siemens VDO Automotive has decided to develop a hybrid electric vehicle (HEV) platform with a modular concept. This concept is useful for all of these different hybrid systems. Electronic converters have a significant role in this modular platform, because the overall power between the board-net and electric machine must be regulated by a DC/AC converter. To implement the motor operation together with the generator operation the converter must be able to operate bi-directionally. This enables system functions like electric drive, combustion engine-start, starting support, regenerative braking and start/stop functions in city traffic. The first steps of the modular platform were realized with practical project experience together with car manufacturers. This paper gives a rough overview about hybrid systems and shows the development status of power electronic converters.

EPE 2007 - Subtopic 16-1 - LS: Automotive
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2007 - Conference > EPE 2007 - Topic 16: 'Electrical systems in aerospace, space, surface and marine transport' > EPE 2007 - Subtopic 16-1 - LS: Automotive
	[return to parent folder]

	Power Stage for Permanent Magnet Synchronous Motors in High Current Automotive Applications By GRAOVAC Dusan; PUERSCHEL Marco; KIEP Andreas	[View] [Download]
Abstract: This paper focuses on the Driver-IC and the MOSFETs in inverter used in automotive applications to control a permanent magnet AC-motor with the focus on high current handling capability and high reliability for safety critical applications. The features of the Driver IC together with latest MOSFET technologies will be discussed.

	Integration of Supercapacitors as Transient Energy Buffer in Automotive Power Nets By BRÃ–SSE Andreas; DOMORAZEK Gottfried; POLENOV Dieter; LUTZ Josef; PRÃ–BSTLE Hartmut	[View] [Download]
Abstract: Load fluctuations in an automotive power net can cause significant perturbations of the supply voltage. A quality improvement for the electrical power supply can be achieved by connecting supercapacitors in parallel to the battery as a transient energy buffer. Effective voltage stabilisation and steadier generator output current were observed in an experimental investigation of such a power net modification. In addition to the increase of the peak power capability of the power net, charge throughput and rms-current in the battery were reduced. A concept and operation strategy aiming automotive requirements for the integration of supercapacitors into the power net are proposed. The resulting system was named "dynamic power assistance".

	Power Electronics for Hybrid-Drive Systems By WOLF JÃ¼rgen; RENKEN Folker	[View] [Download]
Abstract: Today many car manufacturers consider automobiles with combined drive systems consisting of combustion engine and electrical machine as a trend-setting concept. These hybrid vehicles are characterized by its good driving dynamics, economical fuel consumption and environmental-friendliness. Depending on performance class and drive structure, there are different systems available: micro-hybrid, mild-hybrid, full-hybrid, series-hybrid and also series/parallel-hybrid. Due to this large variety of drive systems Siemens VDO Automotive has decided to develop a hybrid electric vehicle (HEV) platform with a modular concept. This concept is useful for all of these different hybrid systems. Electronic converters have a significant role in this modular platform, because the overall power between the board-net and electric machine must be regulated by a DC/AC converter. To implement the motor operation together with the generator operation the converter must be able to operate bi-directionally. This enables system functions like electric drive, combustion engine-start, starting support, regenerative braking and start/stop functions in city traffic. The first steps of the modular platform were realized with practical project experience together with car manufacturers. This paper gives a rough overview about hybrid systems and shows the development status of power electronic converters.