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Traction Inverter Design with a Direct Bypass to Boost Converter
Technical Paper
2017-01-1247
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Direct bypass to DC-DC boost converter in traction inverter increases converter's capability and efficiency significantly by providing a lower loss path for power flow between the battery and DC-link terminal. A bypass using diode is an excellent solution to achieve this capability at low cost and system complexity. Bypass diode operates in the linear operating region (DC Q-point) when the battery discharges through the bypass diode to drive the electric motors. Therefore, thermal stress on the DC-link capacitor is shared between the input and DC-link capacitors through the bypass diode. On the other hand, inverters introduce voltage oscillation in the DC-link terminal which results in unwanted energy oscillation through the bypass diode during battery charging. Both of these phenomena have been explained in details. It is possible to eliminate this power oscillation during battery charging using minimum voltage level boosting at a reduced frequency or using a bi-directional switch (i.e., IGBT/diode or MOSFET/diode pair). The control strategy to achieve minimum voltage level boosting has been described in details. Moreover, it is possible to further reduce power loss of the boost converter by completely bypassing the inductor using a bi-directional switch during high voltage battery charging.
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Alam, M., Chen, L., Zhou, Y., Xu, F. et al., "Traction Inverter Design with a Direct Bypass to Boost Converter," SAE Technical Paper 2017-01-1247, 2017, https://doi.org/10.4271/2017-01-1247.Also In
References
- Chan C.C. The State of the Art of Electric, Hybrid, and Fuel Cell Vehicles Proceedings of the IEEE 95 4 704 718 April 2007
- Ehsani M. , Gao Yimin , Miller J. M. Hybrid Electric Vehicles: Architecture and Motor Drives Proceedings of the IEEE 95 4 719 728 April 2007
- Rahman , K. , Anwar , M. , Schulz , S. , Kaiser , E. The Voltec 4ET50 Electric Drive System SAE Int. J. Engines 4 1 323 337 2011 10.4271/2011-01-0355
- Emadi A. , Rajashekara K. , Williamson S.S. , Lukic S. M. Topological overview of hybrid electric and fuel cell vehicular power system architectures and configurations IEEE Transactions on Vehicular Technology 54 3 763 770 May 2005
- Emadi A. , Williamson S.S. , Khaligh A. Power electronics intensive solutions for advanced electric, hybrid electric, and fuel cell vehicular power systems IEEE Transactions on Power Electronics 21 3 567 577 May 2006
- Liu Jinming ; Peng Huei Modeling and Control of a Power-Split Hybrid Vehicle IEEE Transactions on Control Systems Technology 16 6 1242 1251 Nov. 2008
- Burress T. A. Evaluation of the 2010 Toyota Prius Hybrid Synergy Drive System ORNL/TM-2010-253, UT-Battelle Oak Ridge National Laboratory Oak Ridge, Tennessee March 2011
- Chen Lihua ; V.A. Sankaran, Vehicle electrification and traction inverter design 2012 IEEE Vehicle Power and Propulsion Conference (VPPC) 1 70 9–12 Oct 2012
- Syed F. U. , Ying Hao , Kuang Ming , Okubo S. , Smith M. Rule-Based Fuzzy Gain-Scheduling PI Controller to Improve Engine Speed and Power Behavior in a Power-split Hybrid Electric Vehicle Annual meeting of the North American Fuzzy Information Processing Society 2006 284 289 3–6 June 2006
- Chen Lihua A variable voltage converter with direct bypass for traction drive inverters 2013 IEEE Energy Conversion Congress and Exposition (ECCE) 2793 2798 15–19 Sept. 2013
- Chen Lihua Variable Voltage Converter with Direct Output Voltage Clamping US patent 2012/0019231 A1 Jan. 26 2012