The three-phase inverter uses insulated gate bipolar transistor (IGBT) switches which have advantages of high input impedance as the gate is insulated, has a rapid response ability, good thermal stability, simple driving circuit, good ability to withstand high voltage . The three-phase inverter uses insulated gate bipolar transistor (IGBT) switches which have advantages of high input impedance as the gate is insulated, has a rapid response ability, good thermal stability, simple driving circuit, good ability to withstand high voltage . There are many inverter topologies but output current distortion and efficiency are the two main parameters for the selection of inverters. Two such topologies are described herein. In this paper, the SPWM (Sinusoidal Pulse Width Modulation) technique of unipolar and bipolar inverters is presented. Three-phase inverter reference design for 200-480VAC drives (Rev. The UCC23513 gate driver used has a 6-pin wide body package with optical. The load connections both limit the instantaneous voltages that may be synthesized with inverters com-prising bridge legs fed from a single dc bus (without shorting the dc bus) and reduce the number of half-bridges needed to synthesize the allowed patterns. It is widely used in various applications such as motor drives, renewable energy systems, and power transmission.