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Design of 2×211 kW High Power-Density Aircraft Motor Drive System
Year: 2022 | Author: Xingchen Zhao | Paper: H-S3.4
Fig. 1. The Rogowski coil embedded in the gate driver and bus-bar
The Rogowski coil is used to realize the current sensing and short-circuit protection, which help achieves a higher bandwidth and lower weight. The gate driver, decoupling path, and Rogowski coil are integrated in one PCB board. The device current can be reconstructed by the integrated Rogowski coil, and it matches the results with commercial Rogowski coil well, as shown in Fig. 1.
A hybrid 3-L PWM scheme is developed to reduce the neutral point imbalance and reduce the THD at the same time. The prototype is shown in Fig. 2, and the full-power test waveforms are shown in Fig. 3.
Fig. 2. Prototype of the 211-kW inverter
Fig. 3. Full-power test results.
