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A Bi-Directional Charge-Transfer Circuit for 42V Power System
Technical Paper
2002-01-3068
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The 14/42V Electrical System Architectures have been the subject of discussions in many technical meetings. Some of the major challenges are: system cost, mixed load handling flexibility, jump start issue, battery service life, and transient voltage under load dump situation. In this paper, a patented, bi-directional, charge-transfer circuit is evaluated against these criteria. Circuit performance is discussed in details. It covers circuit efficiency, battery voltage ripple, and transfer-current ripple, and the effectiveness of balancing the battery voltages under various mixed 12/36V loads. The energy transfer principle between a 14V system and a 42V system is presented to demonstrate the cross jumping and surge-load handling capability. The bi-directional energy transfer capability of the circuit easily keeps the load-dump transient-voltage under the 58V limit with either the 14V or the 28V batteries are disconnected.
Authors
Citation
Khuwatsamrit, S., "A Bi-Directional Charge-Transfer Circuit for 42V Power System," SAE Technical Paper 2002-01-3068, 2002, https://doi.org/10.4271/2002-01-3068.Also In
References
- Nicastri Paul Huang Henry “42V PowerNet: Providing the Vehicle Electrical Power for the 21 st Century” Transitioning to 42-Volt Electrical System 1 7 SAE 2000
- Pfaelzer Arthur Weiner Maurice Parker Art “Bi-Directional Automotive 42/14 Volt Bus Dc/DC Converter” Transitioning to 42-Volt Electrical System 77 88 SAE 2000