What is a power inverter, and how does it work?


When the main power is not available, an uninterruptible power supply (UPS) uses battery and inverter.

The power inverter used in the HVDC transmission line. It also used to connect two asynchronous AC systems.

The output of the solar panel is DC power. The solar inverter used to convert DC power into AC power.

The inverter produces variable output voltage by using a control unit (close-loop inverter). The speed of inverter controlled by supplying variable voltage. For example, it used in the refrigerator compressor motor, rail transport, induction motor speed control, electric vehicle.

It can convert the low-frequency AC power to a higher frequency which used in induction heating.

Who Invented the Inverter?

Before the inverter was invented, a motor-generator set and rotary converter were used to convert DC power into AC power.

The engineering term inverter was first introduced by David Prince in an article titled “The Inverter” in 1925. In this article, Price defined the inverter as the inverse of a rectifier.
The term rectifier was in use for more than two decades prior to 1925. Rotary converters used as rectifier until the diode was not available. When it used for conversion of DC to AC, termed as “inverted rotaries”.

After the invention of power electronics switches, the new era of converters started. And increase applications of an inverter. Which leads to the advancement of an inverter.

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