Perhaps you don’t know the importance of film capacitors

The filter capacitor plays a role in filtering the alternating current mixed with DC.

DC-LINK film capacitors are generally not easy to break down. Although they seem to have no direct connection with IGBT, they actually have a great impact.

1. The noise causes the IGBT to run at high load, which increases the heat and affects the life of the IGBT.

2. If the DC-LINK film capacitor is not selected well, the DC side current will be unstable and the waveform will fluctuate high and low.

When working for a long time, when the IGBT is turned off, the current tail is likely to be too long and it is easy to short circuit.

3. The stray inductance becomes larger, and the IGBT driving waveform is prone to irregularities sometimes.

Many people think that if they choose Saifu electronic modules, the circuit will be well done and the performance of the equipment will be guaranteed.Actually, it is not the case. I have been to many users and found that their whole machine is unstable.Later, I found that DC-LINK film capacitors, IGBT absorption capacitors, and resonant capacitors used domestic brands.Poor filtering effect directly affects the performance of IGBT. After replacing the capacitor with a good one, the whole machine is very stable.Therefore, Safe Electronics IGBT directly determines the performance of the whole machine, and the capacitor acts on the IGBT, which indirectly affects the performance of the whole machine. Many users recommend Safe Electronics, which has high quality capacitors and produces its own film materials.