Simplified Analytical Modeling of Reflected Wave Transients in Cable-Connected VSI-Based Motor Drives With Output Reactor

Abdul Basit Mirza, Sama Salehi Vala, Kushan Choksi and Fang Luo
IEEE Transactions on Power Electronics, 2024
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Abstract: This letter proposes a simplified lumped analytical model to investigate reflected wave phenomenon (RWP) in a two-level voltage source inverter-based motor drive with an output reactor. RWP causes motor side overvoltage and drive side overcurrent. The output reactor at the drive side is a preferred RWP mitigation approach for its simplicity. However, existing RWP modeling approaches, for reactor design purposes, rely on complex cable and motor circuit models, requiring time-consuming simulations or are oversimplified, neglecting motor impedance and drive's output slew rate dv/dt . To address this, the proposed model incorporates a condensed motor model and a ramp edge source for the drive output. It is solved to obtain closed-form expressions for estimating the slew rate of overvoltage and overcurrent transients and their respective peak values. Finally, the derived expressions are validated through double pulse tests on a silicon carbide-based hardware prototype for different cable lengths and reactor values.

Recommended citation (BibTex):

@ARTICLE{MirzaRWP2024, 
 author={Mirza, Abdul Basit and Vala, Sama Salehi and Choksi, Kushan and Luo, Fang}, 
 journal={IEEE Transactions on Power Electronics}, 
 title={Simplified Analytical Modeling of Reflected Wave Transients in Cable-Connected VSI-Based Motor Drives With Output Reactor}, 
 year={2024}, 
 volume={39}, 
 number={10}, 
 pages={11986-11990}, 
 doi={10.1109/TPEL.2024.3422324} 
}