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PFC转换器-三相输入

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Power Factor Correction is a technique of shaping input current to be as sinusoidal as possible to reduce harmonic distortion and associated losses and in-phase with input voltage in an AC circuit to have a power factor close to one. Placed as a front end in relatively high-power switch mode power supplies (SMPS), a three-phase power factor corrector is designed with a number of different topologies to meet specific requirements. An interleaving architecture with two or more small interleaved stages is also useful to help achieve higher power densities. Or to further enhance efficiency of the combined PFC and rectifier front-end, bridgeless topologies have emerged that can help reduce conduction loss by minimizing the number of semiconductor switches in the line-current path. For high-power systems with higher current, both Continuous Conduction Mode (CCM) and Transition mode (TM) operations are required and a new patented approach with fixed off-time (FOT) operation can provide great advantages. ST's extended offer of advanced PFC digital controllers and high-performance STM32 microcontrollers support interleaved and bridgeless topologies.  To help design robust and high-efficient PFC stages, these devices embed all the required protection features including output overvoltage, brown-out, feedback disconnection and boost inductor saturation. Developers will also appreciate our power MOSFETs and rectifiers including silicon-carbide (SiC) galvanically isolated gate drivers and a range of hardware and software evaluation and development tools. Read more
pfc converter three phase input circuit diagram

Topologies for enhanced efficiency

An interleaving architecture with two or more small interleaved stages is also useful to help achieve higher power densities. Or to further enhance efficiency of the combined PFC and rectifier front-end, bridgeless topologies have emerged that can help reduce conduction loss by minimizing the number of semiconductor switches in the line-current path. For high-power systems with higher current, both Continuous Conduction Mode (CCM) and Transition mode (TM) operations are required and a new patented approach with fixed off-time (FOT) operation can provide great advantages.

Our products and solutions

ST's extended offer of advanced PFC digital controllers and high-performance STM32 microcontrollers support interleaved and bridgeless topologies.  To help design robust and high-efficient PFC stages, these devices embed all the required protection features including output overvoltage, brown-out, feedback disconnection and boost inductor saturation. 

Developers will also appreciate our power MOSFETs and rectifiers including silicon-carbide (SiC) galvanically isolated gate drivers and a range of hardware and software evaluation and development tools.

All Hardware Evaluation Tools

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      STDES-PFCBIDIR

      批量生产

      15 kW, three-phase, three-level Active Front End (AFE) bidirectional converter for industrial and electric vehicle DC fast charging applications

      SCTW35N65G2V 电源和功率转换器解决方案评估板 ST
      STDES-PFCBIDIR
      批量生产

      15 kW, three-phase, three-level Active Front End (AFE) bidirectional converter for industrial and electric vehicle DC fast charging applications

      STDES-VIENNARECT

      批量生产

      15 kW, three-phase Vienna rectifier with low cost mixed-signal control for power factor correction

      STNRG388A 电源和功率转换器解决方案评估板 ST
      STDES-VIENNARECT
      批量生产

      15 kW, three-phase Vienna rectifier with low cost mixed-signal control for power factor correction