Abstract
The increasing use of grid-connected inverters in power systems, driven by renewable energy growth and high-voltage, high-power open-loop devices, poses challenges due to PWM modulation generating harmful high-frequency harmonic currents. Optimizing parameter selection becomes crucial.LCL grid-connected inverters, as third-order systems, suffer from insufficient damping, leading to oscillations. Active and passive damping techniques are employed for effective control. The optimization process involves analyzing the fundamental principles of LCL filters, selecting space vector modulation for PWM. Design focuses on controlling current ripple within limits by considering LCL filter parameter constraints.A comparison of passive and active damping methods favors a current dual-loop control system. Simulation models evaluate system performance, confirming successful implementation of the optimized design.
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