The basic function of the rear stage circuit is to invert the high-voltage DC boosted by the front stage into AC. After being stepped up by a high-frequency transformer, the high-frequency inverter is rectified into high-voltage DC power, which is usually above 300V. . The inverter stage is the “muscle” of the drive – a power electronics block that provides the regulated, conditioned power directly to the motor, driving it in the manner required by the end application, providing the amperes needed for torque production, the voltage needed for speed and magnetic. . Inverter rear stage output power plays a pivotal role in modern energy systems, especially in renewable energy and industrial applications. This article breaks down its importance, optimization strategies, and real-world applications to help businesses and engineers maximize effi Inverter rear. . An “inverter phase” in electrical engineering describes one of the two or three phases of an alternating current (AC) signal. There is only one phase in a single-phase AC signal, and the voltage and current rise and fall together. A back-to-back converter consists of two three-phase converters, typically an AC/DC rectifier stage and a DC/AC. . In view of the different control objectives and stable operation adjustment of two-stage photovoltaic inverters in on-grid mode and off-grid mode, this paper proposes a coordinated control strategy for the two-stage converters in the PV power generation system with grid-forming inverters in order. .