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Control of Bidirectional AC-DC Converters for DC Microgrid Application
Partha sarathi subudhi, Pawan s khante
Published in Trans Tech Publications, Ltd.
Volume: 536-537
Pages: 1219 - 1222
Three-phase bidirectional AC/DC converter acts as a key part in DC microgrid. To improve the stability of DC bus voltage for the grid-connected mode in DC microgrid, a sliding mode or PI controller based on SVPWM modulator is designed for the bidirectional AC/DC converter in inverter mode. When the error between grid-connected current reference value and actual value is larger than the threshold value, the sliding mode controller is used. Otherwise, the PI controller is adopted. The great grid-connected current reference value fluctuation is simulated in PSIM software when the DC microgrid operates in the grid-connected inverter mode. The simulation results show that the gird-connected current actual value can fast track with the reference value. Then the dynamic response performance of DC bus voltage is improved.
About the journal
JournalApplied Mechanics and Materials
PublisherTrans Tech Publications, Ltd.
Open Access0