What are the advantages of two IGBT modules replacing one IGBT in parallel?

First: the need to reduce costs. Taking Bianchping as an example, it is true that the product stability can be improved by directly purchasing finished modules from manufacturers such as Semi Control, but the corresponding cost increase is not affordable for general companies. The use of multi-module parallel operation can significantly reduce the cost (I don't understand why your cost is increased). Generally, the higher the current of igbt, the higher the price, and the fewer suppliers to choose, so that the price remains high. On the contrary, low current igbt manufacturers more, mass production time is long, low price.

Second: Avoid exclusive suppliers or increase purchase channels.

Third: Drivers with igbt may not support high power stable operation, or developers are used to using mature products. Mature drivers and igbt manufacturers will provide more technical support.

Fourth: Parallel technology has become a development trend, the use of parallel technology (not only igbt) can make the product smaller, higher power density (I have heard Infineon personnel said that there are people abroad using parallel igbt to make a suitcase size 250kw inverter, cattle), and it is easy to produce more patent technology in the development process.

Fifth: helpless, the development of more than 2mw single inverter can not find so large igbt, can only choose parallel technology. One last point: being a parallel technology developer is very rewarding. Because the parallel technology has dynamic and static current equalization, radiation interference and other problems, each problem solved, personnel achievements are very considerable. Generally speaking, the main reasons are cost reduction and parallel high power use.