摘要
The proposed hysteretic current control effectively suppresses 75.0% of the regeneration overshoot in brushless direct current motors (BLDCMs) during deceleration by dynamically limiting the reverse current and stabilizing the supply voltage. A self-protected gate driver (SGD) is implemented to tolerate short pulsewidth modulation signals, enhancing HCC stability under high-speed operation. The SGD further reduces supply voltage overshoot and ground bounce by 88.1% and 88.7%, respectively, ensuring reliable gate control. In addition, the proposed ringing clamp circuit adaptively moderates the high-side turn- off transition, suppressing 84.8% of the voltage spikes induced by high current slew rates. The combined reduction in spike and ringing noise leads to 17.2/17.6 dB, 10.1/9.4 dB, and 8.3/9.6 dB attenuation at supply, ground, and DC-link nodes in the Global Navigation Satellite System and Wi-Fi bands, respectively, significantly improving electromagnetic interference robustness for compact motor-drive systems.