104MPW160K

Film capacitors are a kind of power capacitor based on polypropylene film dielectric. In the field of power electronics, they have been widely used as energy storage components for power frequency filters, coupling circuits, snubber circuits and VAR compensation. The 104MPW160K film capacitor is a polypropylene film capacitor with an order capacitance of 160μF and a rated voltage of 400V.

Application Field

The 104MPW160K is mainly used in the power frequency filter circuit to filter out high frequency components and attenuate voltage peaks. It is also used as an energy storage element in the circuit, as a decoupling element and snubber element, and as a VAR compensation element in the power station. It can also be used in other applications such as line-downing detection, surge protection and harmonic components filter, etc.

Working Principle

This 104MPW160K capacitor uses the principle of electrochemical energy storage. When the capacitor is connected to an AC power source, it starts to store energy. The energy storage process is different for different phases. In the charging process, the core material generates an electric field, which electrodes and generates a positive or negative charge on the electrodes. The energy generated by the electric field is stored in the respective parts according to the polarity of the electric field. As the AC voltage waveform continues to change, the charge on the capacitor is changed, resulting in a continuous energy storage process.

The discharge process of the 104MPW160K capacitor is opposite to the charging process. When the energy stored in the capacitor is discharged, the positive and negative charges on the electrode plates dissipate, generating a certain amount of energy and restoring the electric field of the core material. Thus, the energy stored in the capacitor is released. This process continues in a periodical manner according to the waveform of the current and repeats the cycle of energy storage and release.

Drawback

However, the 104MPW160K capacitor also has some drawbacks. The capacitance and voltage of the capacitor are greatly affected by the temperature, so the capacity decreases as the temperature rises. In addition, if the capacitor is not installed correctly, it will cause breakdown, arc and other phenomena, so the insulation layer of the capacitor should be properly maintained during use.