Leakage current suppression is a key issue that must be addressed in non-isolated PV inverters. In this paper, a battery array neutral point grounded photovoltaic inverter topology is proposed, which consists of three parts: a boost circuit, an intermediate voltage equalization circuit, and an inverter circuit. The boost circuit maintains a constant DC bus voltage and maximum power tracking, which improves system power conversion efficiency. The intermediate voltage equalization circuit ensures that the voltages of the upper and lower bridge arms of the half-bridge inverter circuit are balanced, thereby improving the quality of output power. The connection point of the two PV arrays is grounded to clamp the common mode voltage, thereby suppressing the leakage current and improving the reliability, safety and lifetime of the PV inverter. For the proposed inverter topology, the corresponding controller is designed and the simulation is completed. The simulation results are consistent with the theoretical analysis, which verifies the correctness and the feasibility performance of the proposed inverter topology.