Arrangement and method for protecting multiple voltage supply systems against voltage arc-over between different voltage planes and against pole reversal from the outside

US6639389B2 · kind B2 · utility

Assignee

• Daimlerchrysler AG · US

Inventors

• Thomas Binder · Wulfen, DE
• Roland Mauser · Ludwigsburg, DE
• Rainer Mäckel · Bocholt, DE
• Fritz Schmidt
• Manfred Stege · Langen (Hessen), DE

Key dates

• Filing date: Mar 18, 2002
• Grant date: Oct 28, 2003
• Expiry date: Mar 18, 2022

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02P2101/45
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

An arrangement and method for protecting a multiple voltage supply system against voltage arc-over between the different voltage planes. For this, the voltage in the low-voltage plane of the supply system is clamped to the low-voltage value with a voltage limiter until a battery disconnect switch in the high-voltage plane of the supply system is opened and the generator output voltage in the high-voltage plane is adjusted back to the voltage value of the low-voltage plane. As a result, the high-voltage plane of the supply system is disconnected from the high-voltage sources. Consequently, the voltage in the low-voltage plane is prevented from increasing even in case of a short-circuit between both voltage planes of the supply system and the consumers in the low-voltage plane can continue to be operated safely.