Variable DC-link Control Strategy for Maximum Efficiency of Traction Motor Drives
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2021
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Institute of Electrical and Electronics Engineers Inc.
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This work proposes an optimized control strategy for online adapting the DC-link voltage in a traction motor drive. In the considered vehicle architecture, a DC/DC converter boosts the battery voltage (rated 400 V) to a controlled DC-link, which feeds the traction inverter. The amplitude of the DC-link is online varied depending on the drive speed and torque conditions to minimize the power losses in the DC/DC converter and in the traction inverter. The switching losses in both the converters are reduced by minimizing the DC-link voltage without affecting the motor control performance. The proposed DC-link adaptation technique is almost independent of the motor parameters and adopted torque/speed control strategy, therefore it can be adopted in a wide number of applications. Moreover, it requires minimal calibration effort.
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Publisher Copyright: © 2021 IEEE.
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Pescetto , P , Sierra-Gonzalez , A , Trancho , E & Pellegrino , G 2021 , Variable DC-link Control Strategy for Maximum Efficiency of Traction Motor Drives . in 2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings . 2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings , Institute of Electrical and Electronics Engineers Inc. , pp. 4815-4821 , 13th IEEE Energy Conversion Congress and Exposition, ECCE 2021 , Virtual, Online , Canada , 10/10/21 . https://doi.org/10.1109/ECCE47101.2021.9595681
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