**5. Conclusion**

This paper has proposed the SVM technique to eliminate the CMV for the 3L qSBT2I. In this scheme, the zero and medium vectors are adopted to synthesize the reference vector. The drew-time calculation of these vectors is also presented in detail. Switching sequence is selected to ensure the symmetry of output voltage and the ST vector is inserted into zero vector to ensure the boost capability, as well as not causing distortion at the output voltage. In addition, the control signals of switches *S*1 and *S*2 were presented to guarantee the advantages of the qSB network compared to ZS and qZS networks, such as high voltage gain, continuous input current, and low inductor current ripple. To validate the performance of the proposed method, the simulation and the experiment were conducted in PSIM simulation and laboratory. The comparison between the proposed method and other conventional schemes was carried out to confirm the effectiveness of the proposed technique. The results show that the proposed SVM method successfully eliminates the CMV with a little bit increment in THD of the load current. However, this THD value is still 5% smaller than the standard IEC61000-4-30 Edition 2 Class A [35].

**Author Contributions:** This paper was a collaborative effort among all authors. All authors conceived the methodology, conducted the performance tests and wrote the paper. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research was funded by CT.2019.04.03 project.

**Acknowledgments:** This work was supported by the Advanced Power Electronics Laboratory, D405 at Ho Chi Minh City University of Technology and Education, Viet Nam.

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