Direct Torque Control of 3x5 Matrix Converter Fed Five-Phase IM Drive using Virtual Vector Concept

Abstract

For heavy industrial drive applications, the Direct Matrix Converter (DMC) solves problems caused by the two-stage power conversion process. Due to a lack of technical innovation, controlling multiphase drives powered by DMC is a serious issue. This paper presents a direct torque control (DTC) scheme for a five-phase induction motor (FPIM) powered by a three-to-five (3x5) phase DMC. To remove the effect of the xy component on 3x5 DMC output voltage space vector and stator current space vector, this proposed DTC scheme employs the principle of virtual vectors. Through utilization of virtual vectors in proposed DTC scheme, the torque and speed control performance of FPIM is achieved along with input grid power factor control of DMC. The proposed scheme is implemented through FPGA based controller for the experimental validation. The simulation and experimental results verify the effectiveness of the proposed DTC scheme.