A single-phase to three-phase inverter — commonly known as a variable frequency drive (VFD) or phase converter inverter — is a power electronics device that accepts standard single-phase AC input (220V~240V) and synthesizes a balanced three-phase AC output to drive three-phase induction motors. It solves one of the most common challenges in workshops, small manufacturing facilities, and rural installations: operating three-phase equipment on a single-phase grid supply.

Inverter.com carries single-phase to three-phase inverters ranging from 0.4kW up to 22kW, covering the majority of motor-driven applications in light industrial and commercial settings. Compatible motors include lathes, milling machines, compressors, water pumps, conveyor systems, and agricultural machinery. Input voltage is typically 220V~240V single-phase; output is 0~240V three-phase with adjustable frequency from 0 to 400Hz.

Unlike rotary phase converters, a VFD-based single-phase to three-phase inverter adds motor speed control as a standard feature. Output frequency — and therefore motor RPM — can be adjusted in real time, allowing operators to dial in precise cutting speeds, pump flow rates, or conveyor throughput without mechanical gearing changes. This makes the drives particularly valuable in machine tool and process control applications.

Each unit includes built-in protection functions: overcurrent, overvoltage, undervoltage, overtemperature, and short-circuit protection. A keypad or external control signals (0–10V analog or RS485 Modbus) can be used for speed reference and start/stop commands, making integration into existing control panels straightforward.

Installation requires connecting a single-phase supply to the L and N input terminals and the motor to the U, V, and W output terminals. Motor nameplate parameters — rated voltage, current, frequency, and RPM — must be programmed into the drive before first run. Acceleration and deceleration ramp times are configurable to protect both the drive and connected load from mechanical shock during startup and stopping.

Inverter.com single-phase to three-phase inverters are stocked and shipped from the United States, with technical support available for selection, wiring, and parameter setup.

Learn more: https://www.inverter.com/single-phase-to-three-phase-inverter