What Is a Three-Phase Power Converter?


Quick Answer

A three-phase power converter is a motor that converts single-phase electricity into three-phase electricity required to operate a three-phase power machine. It is used when three-phase electric power is either not available or is too expensive to install. This converter permits varying power frequencies.

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Full Answer

Three-phase electric power is more efficient and sturdy than single-phase power. In areas where three-phase power is not available, a converter is used to safely operate heavy machinery that relies on this power. A static type converter is an inexpensive type of three-phase converter and has no moving parts. It uses only a third of the motor’s horsepower.

Another economical choice is a rotary converter, which combines a motor and generator. It bears the appearance of a heavy-duty electric motor with an over-sized junction box attached to it. Although this converter is more expensive than a static converter, it is useful when using multiple heavy-duty three-phase machines.

An electronic converter is also known as an inverter since it transforms single-phase electric power into direct current and uses microchip controls to simulate three-phase alternating current. This converter permits easy speed control, torque and direction of rotations. It is programmed to run one machine at a time and is the right converter to speed up a machine gradually.

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