The decoupling of the capacitor voltage and inductor current has been shown to improve significantly the dynamics performance of voltage source inverters in isolated microgrids. However, still the computation and PWM delays limit the achievable bandwidth. A technique based on a lead compensator structure is proposed to overcome this limitation. It is shown how a widen bandwidth for the current loop with still well damped characteristics allows to enlarge the outer voltage loop bandwidth. These features are demanding requirements in high performance islanded applications. Discrete-time domain implementation issues of an anti-wind up scheme are discussed as well. In fact, algebraic loops can arise if the wrong discretization method is used making unfeasible the real-time implementation of digital controllers. Experimental tests in accordance with the standards for UPS systems verify the theoretical analysis.
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