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What is the role of power electronic capacitors?
Aug 27, 2018

Power electronic capacitors are: phase shift, coupling, step-down, filtering, etc., commonly used in high and low voltage systems, parallel compensation reactive, parallel AC high voltage circuit breaker break, motor start, voltage bias.

Power system loads, such as electric motors. Electric equipment such as electric welding machines, induction furnaces, etc., in addition to consuming active power, also "absorb" non-functional quantities. In addition, power system transformers also require reactive power. If all reactive power is supplied by the generator, it is not only economical, but also has poor voltage quality and affects the user.

A power capacitor in a sinusoidal AC circuit can "send" reactive power. If the capacitor is connected to a load (motor), or a transmission device (transformer) is running, then the review or transmission equipment requires reactive power and is only supplied by the capacitor.

The role of power electronic capacitors is reactive power compensation. Through local compensation, the energy loss of the line is reduced, the voltage drop is reduced, the voltage quality is improved, and the power supply capability of the system is improved.

There are mainly filtering, because the capacitance is directly connected, and there is reactive power compensation, improving the main resistance of the power system, etc.

A power capacitor in a sinusoidal AC circuit can "send" reactive power. If the capacitor is connected to a load (motor), or a transmission device (transformer) is running, then the review or transmission device requires reactive power, simply by the power electronic capacitor supply.


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