Is the larger the UPS power factor, the better?

frozenviolet

Is the larger the UPS power factor, the better? [Copy link]

For a long time, the issue of UPS power factor has been a focus of debate for both UPS suppliers and users : users
claim to want UPS with a high power factor, and suppliers also say that the higher the factor
, the better, so manufacturers try their best to improve this factor. In the end,
is it better for UPS to have a higher or lower power factor?

zylux

Thanks for sharing.. I am researching something related to PFC.

hk6108

Conjugate matching

qwqwqw2088

hk6108 posted on 2017-10-29 22:56 Conjugate matching

What is the relationship between conjugate matching and the original poster's power factor problem? Let me explain it briefly

hk6108

qwqwqw2088 posted on 2017-10-29 23:20 Let me briefly explain the relationship between conjugate matching and the OP's power factor problem.

After searching online, I understand that this phenomenon is caused by the reactance elements in the UPS (output end). When coupled with a linear pure resistive load, the reactance in the system imposes a reactive load on the system itself. Only when the load reactance is mutually compatible with the system, the power factor in the system becomes one and the output is fully utilized.

lmtgd

The so-called power factor is the value of cosθ, the phase difference between current and voltage in alternating current. The maximum value is 1 and the minimum is -1. When the load is purely resistive, θ=0, cosθ=1. For pure inductive and pure capacitive loads, cosθ=0. In the former, the current lags the voltage by 90 degrees, θ=90, and in the latter, the current leads the voltage by 90 degrees, θ=270. Therefore, the most ideal power factor is 1. In fact, the power factor can be compensated by capacitance, which is what the power system does.

qwqwqw2088

For UPS, the input power factor provides benefits to the grid, while the output power factor varies according to its load.