Question

need for power electronics​

Answer 1

According to an article by ABB, about 40% of the world's power needs are met by electrical energy. ... Without power electronics, this energy cannot be harnessed and delivered efficiently and energy from renewable sources, such as solar and wind, could not be fed into the electricity grid.

Answer 2

Explanation:

Power electronics also allow for the variance of electric motor drive speeds, reducing the amount of energy consumed by making processes more efficient. Without this technology electric motors would always run at full speed consuming more energy than necessary.