Numerically Stable Implementation of Active Power Decoupling Control Strategies

In active power decoupling (APD), image ambiguity in functions like “sqrt” and “atan2” can destabilize capacitor voltage control, leading to glitches. This paper proposes a phase unwrapping technique (PUT) that stabilizes angle computation, eliminating glitches from atan2-induced image ambiguity. Simulations results recreate and eliminate atan2-induced glitches using the proposed PUT.