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Bandwidth Improvements for Current Control Loops with a 100 kHz PWM Frequency and GaN Power Semiconductors

  • A discrete-time design method for a robust current controller of a servo drive has been developed. It takes the sampling time, the processing dead time and the dynamic behavior of the A/D converter into account. The theoretical calculations are verified using a test stand for high dynamics. The test stand includes a voice coil motor and power electronics with Gallium Nitride (GaN) power semiconductors for switching frequencies of more than 100 kHz. The bandwidth of the current control loop can be improved from typically 1 kHz to 1.5 kHz with insulated-gate bipolar transistor (IGBT) power semiconductors in state-of-the-art motion control systems to 10 kHz and more.

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Metadaten
Author:Julia Höllthaler, Rainer Hagl, Ralph Kennel
URL:https://doi.org/10.23919/SICE.2019.8859873
Parent Title (English):2019 58th Annual Conference of the Society of Instrument and Control Engineers of Japan (SICE), Hiroshima, Japan
Document Type:Conference Proceeding
Language:English
Publication Year:2019
Tag:FPGA; GaN power semiconductors; bandwidth; current control; servo drives
faculties / departments:Fakultät für Ingenieurwissenschaften