DC-Link Current Minimization Scheme for IM Drive System Fed by Bidirectional DC Chopper-Based CSI

Compared to a voltage source inverter, a current source inverter (CSI) retains the advantages of inherent boost capacity, friendly output voltage waveforms, and high reliability in motor drive systems. As the motor drive usually operates on variable speed and torque occasions, the CSI needs a pre-st...

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Bibliographic Details
Published in:IEEE transactions on transportation electrification 2023-06, Vol.9 (2), p.1-1
Main Authors: Miao, Yiru, Liao, Wu, Huang, Shoudao, Liu, Ping, Wu, Xuan, Song, Pengyun, Li, Guosheng
Format: Article
Language:English
Subjects:
bidirectional DC chopper
Circuits
Current source inverter (CSI)
Current sources
Electric potential
Harmonic distortion
Induction motors
Inverters
Mathematical analysis
minimum DC-link current
optimal exciting component of stator current
Optimization
Semiconductor devices
Stators
Voltage
Waveforms
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Summary:Compared to a voltage source inverter, a current source inverter (CSI) retains the advantages of inherent boost capacity, friendly output voltage waveforms, and high reliability in motor drive systems. As the motor drive usually operates on variable speed and torque occasions, the CSI needs a pre-stage circuit and control scheme to generate a proper DC-link current. Because the DC-link current minimization can reduce the losses of semiconductor devices and the THD of stator current, a DC-link current minimization scheme for CSI fed induction motor (IM) drive system fed by bidirectional DC chopper-based CSI is proposed in this paper. Firstly, the calculation method for the reference of the minimum DC-link current and the optimal exciting component of stator current is derived. Secondly, the hysteresis control scheme based on the bidirectional DC chopper is designed to regulate the DC-link current tracking to the reference under different operation modes. Thirdly, the influence of the parameters mismatch in the steady-state is discussed. Finally, the correctness and feasibility of the DC-link current minimization scheme proposed in this paper are verified by simulation and experimental results.
ISSN:2332-7782
2577-4212
2332-7782
DOI:10.1109/TTE.2022.3224069