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How to improve power factor in switch mode power supplies?

Article Source：Kinri Energy | Author：Kinri Energy | Issuing Time：2024.03.25
The power factor of a switching power supply represents the ratio of output current to input voltage, which is a very important indicator. If the power factor is low, it will lead to more energy waste and affect network quality. Here are some methods to improve the power factor of switching power supplies:


Adopting PFC technology

PFC (Power Factor Correction) technology is currently one of the most effective methods to improve the power factor of switching power supplies. Improve power factor by controlling the phase of input current. PFC technology can effectively improve the efficiency and power factor of switching power supplies.

Reduce harmonic pollution

Switching power supplies can generate many high-frequency harmonics during operation, which affects the normal operation of the power grid. To reduce this impact, measures such as filters and noise cancellers should be considered in the design of switching power supplies to reduce harmonic pollution.

Choose the appropriate capacitor

When designing switch mode power supplies, selecting appropriate capacitors can also improve their power factor. The quality and capacity of capacitors directly affect the power factor of switching power supplies, so careful consideration is needed.

In summary, the power and power factor of switching power supplies are important indicators that affect their performance. In order to improve the power factor of switching power supplies, PFC technology should be adopted, harmonic pollution should be reduced, and appropriate capacitors should be selected to improve their efficiency and stability.
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