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A Method to Miniaturize the DC Link Capacitor of ISG Inverter
Technical Paper
2013-01-0130
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper proposes a method to reduce the DC link capacitor of the ISG (Integrated Starter Generator) inverter for the micro-hybrid system of which ESS (Energy Storage System) is composed of a 12V battery, a 48V super-capacitor and a bidirectional DC-DC converter. Firstly, analysis is performed to calculate the required dc link capacitance according to the allowable ripple voltages and some inverter switching frequencies. And then, a method to reduce the ripple voltage is presented in which increased is the switching frequency, namely decreasing the switching period smaller than the current control period. Thirdly, the other method is presented to compensate the ripple voltage with a bidirectional dc-dc converter which is controlled much faster than the inverter. Finally, several simulations are done to verify the effectiveness of the proposed method. Using the proposed method, the required capacitance can be reduced to about a half of that of the initial design.
Authors
Citation
Kim, S., Choi, D., and Kwon, T., "A Method to Miniaturize the DC Link Capacitor of ISG Inverter," SAE Technical Paper 2013-01-0130, 2013, https://doi.org/10.4271/2013-01-0130.Also In
References
- Gaedt Lutz , Kok Daniel et al. HyTrans - A micro-hybrid Transit from Ford ICAT (International Conference on Automotive Technologies) Istanbul 2004
- Gao , B. , Svancara , K. , Walker , A. , Kok , D. et al. Development of a BISG Micro-Hybrid System SAE Technical Paper 2009-01-1330 2009 10.4271/2009-01-1330
- Renken Folker Analytical Calculation of the DC-Link Capacitor Current for Pulsed Three-Phase Inverters 11th EPE-PEMC Meeting Riga Latvia 2 4 September 2004 9984-32-033-2