A Multi-Resonant based reference feedforward adaptive voltage
This paper investigates a novel adaptive voltage control over a three-phase grid-forming (GFM) inverter. The proposed voltage controller includes two function parts: power
Adaptive Control Strategy of Grid-Connected Inverter 3.1. Adaptive Control Strategy of Power Grid Voltage PV inverters need to control the grid-connected current to keep synchronization with the grid voltage during the grid-connection process.
Since the adaptive control method has parameters fluctuating along with the variable disturbance, the successful application of adaptive control strategies dramatically improves the performance of the inverter to cope with parameter uncertainty and disturbance, , , .
In the comparison between the improved inverter adaptive control system and the inverter adaptive system, the improved inverter voltage recovery speed is faster, can be restored within one cycle, and the control effect of the inverter is better. The harmonic rate of the port voltage has decreased from 10.43 to 1.92%.
Conclusion In this paper, a novel adaptive controller is proposed for GFM inverter based on steady-state inverter control requirements. Two kinds of inputs are designed in control input, namely power control input and signal control input. The former improves dynamic performance and disturbance-resistant ability.
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