The control strategy for current regulator based on synchronous frame has been widely applied for the three-phase pulse width modulation (PWM) rectifier. However, because of the lack of one demention in mathematical model, delaying one-quarter of a periodic synchronization of the actual circuit physical quantities to achieve a group of virtual physical quantities orthographic with the actual ones for synchronous coordinate transformation have been proposed as the conventional approach for the case of the single-phase PWM rectifier. The method given above severely degrades the dynamic performance, and even leads to an instable system. A new method is introduced to solve these problems by constructing a virtual orthogonal circuit, and a novel current-loop controller based on complex vector, where there is no need of accurate inductance value, is also been used to solve the coupling issue coming up with the virtual orthogonal circuit. The simulation and experimental results verify the validity of the proposed method.