Multi-pulse rectification technology converts the three-phase power supply into multiple sets of voltages with different phase angles through a phase-shifting autotransformer, which are then supplied to multiple rectifier bridges respectively. The harmonic currents generated by different rectifier bridges cancel each other inside the transformer, thereby significantly reducing the harmonic currents injected into the power grid.
Advantages
- Suppresses harmonics at the rectification source, providing stable mitigation performance
- Does not rely on complex power electronic equipment, ensuring high system reliability
- Improves system power factor and reduces the risk of electricity penalty charges
- Suitable for high-power industrial power systems with continuous operation
Disadvantages
- Higher initial equipment investment
- Larger equipment size and weight, requiring sufficient installation space