In this paper, a three-phase voltage transients emulator is proposed using a non-external power supply topology with a feedback control loop per phase. The development process in control design, simulate and experimental result of a 3.6kW three-phase voltage emulator will be shown. The possible voltage transients to emulate are: Sags, Swells and Flickers. According to electrical standard such as: EN-50160, IEC 61000-4-30 and IEEE 1159-1995 also NTC 5001 and NTC 5000. The implementation tool used was dsPACE System (DS1104 with CLP1104 Panel) with the control technique implemented by software in Simulink.