HFI (High-Frequency Injection) Technology

• Effectively addresses insufficient low-speed torque in sensorless FOC control.

• Achieves 20kHz high-frequency square wave injection, significantly reducing electromagnetic noise.

Torque Compensation

• Enhances compressor load capacity and reduces operational noise by adding compensated Q-axis current components.

Noise Suppression

• Implements Q-axis voltage feedforward compensation (FOC UQCPS) to neutralize noise by generating inverse acoustic waveforms.

Field-Weakening Algorithm

• Applies negative D-axis current to counteract back-EMF, enabling higher maximum speeds without torque loss.

CBB Capacitor Algorithm

• Replaces traditional electrolytic capacitors, offering cost savings and extended lifespan.

Hardware-Based PFC

• Hardware-accelerated PFC improves efficiency and stability.

• Supports up to 80kHz switching frequency, allowing smaller inductor sizes.

•