November 2023

One article understand: line voltage, phase voltage, phase current and line current difference!

What is three-phase alternating current? Presumably most of the friends engaged in the electrical industry are not strange, but for a beginner it may be half understood. In fact, three-phase alternating current is a form of power transmission, referred to as: three-phase electricity. General household electricity is single-phase AC, but the large-scale production and distribution …

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Active power filter

How to design an active filter? How to select active filter?

An active filter is a type of analog circuit that implements an electronic filter using the active component, usually an amplifier. The amplifier included in the filter design can be used to improve the cost, performance and predictability of the filter. First, how to design active filter The design method of active filter can be …

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The role and difference between SVG and SVC, don’t be silly to distinguish ~

SVG is a typical power electronic equipment, which is composed of three basic functional modules: detection module, control operation module and compensation output module. Its working principle is to detect the current information of the external CT system, and then analyze the current information, such as PF, S, Q, etc., through the control chip; Then the controller gives the compensated drive signal, and finally the inverter circuit composed of the power electronic inverter circuit sends out the compensated current.

Active filter

Active Power Filter (APF) is a new type of power electronic device used to dynamically suppress harmonics and compensate for reactive powerlessness. It can compensate for harmonics that change in size and frequency and reactive power.Active filters are called active. As the name implies, the device needs to provide power supply (to compensate for the …

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