An H14 three-level inverter topology and the corresponding control method for common-mode voltage (CMV) suppression based on the three phase three-level neutral-point-clamped (3L-NPC) photovoltaic inverter are presented in this paper. Operation status of the proposed H14 three-level inverter is analyzed under different switching patterns, and the corresponding CMV in each operation status is discussed. The control method of H14 inverter is presented with the switching function, and the switching function is given which simplifies the process of driving. The operation performances of the proposed H14 inverter in terms of phase current, DC link neutral-point voltage oscillation, line-to-line voltage and CMV are investigated. The HIL experimental verification results show that the proposed H14 three-level inverter can suppress the CMV effectively.