Duel Active Bridge Micro Converter with Sinusoidal Modulation

Abstract

Sinusoidal Pulse Width Modulation (PWM) modulation is highly recommended for developing a bidirectional single-phase AC-linked micro inverter. This modulation technique gradually switches electricity on and off by controlling the power flow in both directions through a dual-function generator. One of the key advantages of employing micro inverters in such applications is their ability to function efficiently over a broad range, particularly in scenarios where both phases are necessary to manage multiple voltage sources. Micro inverters streamline the system design and enhance overall performance by consolidating all operational aspects into a single phase. A significant benefit highlighted in this discussion is the representation of power output as a smooth wave, achieved through integrating multiple control systems utilizing twin active bridge converters, a distinctive converter configuration. The system's energy output can be effectively adjusted by evaluating the wave variation in each direction. This research delves into these control systems' intricate components and functionalities, shedding light on the critical aspects that contribute to the success of bidirectional single-phase AC-linked micro inverters.