Three-Phase Full-Control Rectification with Unity Power Factor Control Strategy

This system employs three-phase fully-controlled rectification technology based on a unity power factor control strategy, utilizing IGBT (Insulated Gate Bipolar Transistor) as the switching devices. In the control circuit, the PWM waveform generator incorporates a saturation limiting module, which functions to restrict waveform amplitude through implementation algorithms that typically involve voltage clamping and duty cycle limitation, thereby directly affecting the output DC voltage amplitude.

Furthermore, it's noteworthy that this control strategy ensures the system power factor approaches unity (approximately 1). The implementation typically involves phase-locked loop (PLL) synchronization and current reference generation algorithms to maintain sinusoidal current waveforms in phase with voltage. Additionally, this technology demonstrates advantages in high efficiency, reliability, and cost-effectiveness, often achieved through optimized switching frequency control and thermal management algorithms. Consequently, this technology finds extensive applications in industrial production and energy sectors, providing users with more stable and high-quality power output through advanced digital signal processing and real-time control mechanisms.