**6. Conclusions**

In this paper, a novel SVM method based on the active and reactive power of a matrix rectifier was proposed. In the conventional SVM, the modulation index and phase required to drive the SVM were obtained from the PI controller to control the output inductor current and phase of the input voltage. However, this approach makes input power factor control unintuitive. In the proposed scheme, the modulation index and phase were calculated using the active and reactive power of the rectifier for intuitive power factor control. The active power reference for the rectifier was obtained from the PI controller, the output inductor current, and the reference of the output inductor current. In order to compensate for the reactive power of the input capacitor and to achieve the unity power factor, the reference of the rectifier reactive power was set to the negative value of the reactive power of the input capacitor. Under light load conditions, where unity power factor control was not possible, the MAPF was obtained by setting the reference value of the rectifier reactive power to the maximum reactive power that the rectifier can produce. The advantage of the proposed technique is that it can directly achieve the unity power factor using power-based SVM, and in the light load condition, MAPF can be accomplished by supplying the maximum reactive power of the rectifier. The simulation and experimental results confirm the performance of the proposed method.

**Author Contributions:** Conceptualization, S.-S.K.; methodology, S.-S.K., J.-C.K.; software, D.K.; validation, J.-C.K.; formal analysis, J.-C.K.; investigation, J.-C.K.; resources, S.-S.K.; data curation, D.K.; writing—original draft preparation, J.-C.K.; writing—review and editing, S.-S.K.; visualization, J.-C.K.; supervision, S.-S.K.; project administration, S.-S.K.; funding acquisition, S.-S.K.

**Funding:** This research was supported by the National Research Foundation of Korea (NRF) gran<sup>t</sup> funded by the Korean governmen<sup>t</sup> (MSIP) (2017R1A2B4011444).

**Acknowledgments:** This research was supported by the National Research Foundation of Korea (NRF) gran<sup>t</sup> funded by the Korean governmen<sup>t</sup> (MSIP) (2017R1A2B4011444).

**Conflicts of Interest:** The authors declare no conflict of interest.
