In a current source rectifier such as a matrix rectifier, input voltage and current cannot be\nin phase unless an additional input power factor control technique is implemented. This paper\nproposes such a technique for a matrix rectifier using power-based space vector modulation (SVM).\nIn the proposed method, the modulation index and phase required in order to apply the SVM are\ncalculated based on the active and reactive power of the rectifier for intuitive power factor control.\nThe active power that the rectifier should generate for the regulation of the output inductor current\nis obtained by the PI (proportional-integral) controller. The reactive power, which is supplied by the\nrectifier for adjustment of the power factor, is assigned differently depending on the output\ncondition: for the output condition capable of unity power factor, it is set to a negative value of\nreactive power of the input capacitor, and when the unity power factor is not achievable, it is set\nwith the maximum reactive power the rectifier can generate under the given condition to attain the\nmaximum possible input power factor. It is determined whether the given condition is the light load\ncondition by comparing the absolute value of the reactive power supplied by the input capacitor\nwith the maximum rectifier reactive power that can be produced under the given condition. The\nSVM based on the active and reactive power of the rectifier in this technique allows the input power\nfactor control to be intuitive and simple. The performance and feasibility of the technique were\nproved by simulation and experimentation.
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