This paper presents a new method named Sampled, Data and Space Vector Technique (SDSV) to control the three-phase, voltages subjected to load changes. The proposed SDSV, uses the on record and measured three-phase voltages to obtain, the reference space vector (SV_r) and measured one (SV_m), respectively at different samples. The two space vectors SV_r and, SV_m are compared at regular samples of the system sinusoidal, cycle, to generate an error. This error is employed to produce the, new reactive power of compensator in a small period of time, rather than waiting for a complete system sinusoidal cycle, thereby allowing a quick and an efficient Volt-Ampere Reactive, (VAR) control for the three-phase load voltages.