This study proposes a virtual synchronous generator (VSG) control method based on a discontinuous control strategy to address issues in asynchronous inverter integration and power balancing systems. Conventional VSG control methods, which rely on continuous-time control strategies, often result in the accumulation of error variables over time, leading to significant steady-state errors during parallel operation of multiple inverters. The proposed discontinuous control strategy intervenes only when fluctuations in output power indicators exceed predefined thresholds, and it disengages during the next power balancing cycle. By eliminating the time-based accumulation of error variables, this method effectively achieves power balance while minimizing steady-state errors. Simulation analysis demonstrates that the proposed control strategy ensures a high degree of consistency in the adjustment process of multiple inverters. It not only retains and optimizes the inherent stability of the VSG system but also corrects the original steady-state errors through a new adjustment mechanism, realizing its robustness and redundancy.