The Power Factor Correction Device Reduces The Thermal Stress On The Rectifier Bridge By Continuously Taking Current.

Uncorrected traditional rectifier bridges often exhibit spike-shaped current waveforms after rectification and filtering. This nonlinear current not only increases interference to the power grid but also subjects the rectifier bridge and downstream components to significant transient current loads and thermal stress. Such thermal stress is a key factor contributing to component degradation over long-term operation.

The basic function of deploying capacitor bank for power factor improvement in the overall power supply topology is to regulate the input current waveform through active or passive means after the rectifier bridge and before the filter capacitor, so that the current is more consistent with the grid voltage and suppresses high-order harmonics. Common implementations of the power correction device circuit include bridged boost and bridgeless topologies. These structures utilize control strategies and inductors to create a continuously conducting current path, reducing high-frequency pulse components in the current waveform.

For the rectifier bridge, in the continuous current-taking mode, the power factor correction device industrial makes the input current flow more continuous rather than intermittent peaks, reducing the current surge changes of the bridge diodes and switching elements in each AC cycle. This continuous current improves the smoothness of the current waveform, reduces junction temperature fluctuations inside the rectifier, and reduces the risk of material fatigue caused by repeated thermal cycling.