Load dump protection in 42 V automotive electrical distribution systems

Shen, Z. John; Robb, S.P.; Robb, F.Y.; Fuchs, Michel; Berels, D.; Hampton, K.

doi:10.1109/apec.2001.911662

Cited by 5 publications

(2 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additionally, there is a need to handle fault conditions. One requirement is to limit the "load-dump" voltage transient that can occur when the battery is suddenly disconnected from the alternator while drawing high current [34]- [43]. In this section, we describe how these control requirements are addressed in the prototype system, and present experimental results that validate our methods.…”

Section: Control Of the Alternator Encompasses A Number Of Tasksmentioning

confidence: 99%

“…Control of load-dump transients is another important aspect of alternator design. This is particularly important in 42-V electrical systems, since the proposed transient limits [27] are much tighter (on a percent overvoltage basis) than is typically achieved with Lundell alternators (e.g., see [34]- [43]). The SMR alternator can achieve significantly improved output voltage transient response as compared to a diode-rectified alternator [10].…”

Section: Load-dump Transient Controlmentioning

confidence: 99%

See 1 more Smart Citation

Design and Evaluation of a 42-V Automotive Alternator With Integrated Switched-Mode Rectifier

Tang

Otten

Keim

2010

IEEE Trans. Energy Convers.

View full text Add to dashboard Cite

The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. CitationTang, Sai Chun et al. "Design and Evaluation of a 42-V Automotive Alternator With Integrated Switched-Mode Rectifier." IEEE Transactions on Energy Conversion 25.4 (2010): 983-992. Web. 30 Mar. 2012.Abstract-This paper presents techniques for the design of highpower Lundell alternators with integrated switched-mode rectifiers. A multisection stator winding and interleaved rectifier arrangement is introduced that enables high power levels to be achieved using small semiconductor devices, and which greatly reduces the output filter capacitor requirements. We also demonstrate control methods suited for this interleaved system. In addition to accurate closed-loop output voltage control, we introduce methods to provide (partial) synchronous rectification for reduced loss, and to provide tight load-dump transient control. The proposed technology is validated in the design and experimental evaluation of a 42-V, 3.4-kW alternator with fully integrated power electronics and controls. The prototype alternator achieves approximately a factor of 2.1 increase in power and 1.6 increase in power density as compared to a conventional diode-rectified alternator.Index Terms-Integrated switched-mode rectifiers (SMRs), interleaved rectifier, 42-V automotive alternator, load-dump control.

show abstract

Section: Control Of the Alternator Encompasses A Number Of Tasksmentioning

confidence: 99%