A Repetitive Control Scheme for Harmonic Suppression of Circulating Current in Modular Multilevel Converters

• Published in: IEEE transactions on power electronics Vol. 30; no. 1; pp. 471 - 481
• Main Authors: He, Liqun, Zhang, Kai, Xiong, Jian, Fan, Shengfang
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.01.2015; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Capacitors; Circulating; Circulating current; Control systems; Controllers; Converters; Devices; Educational institutions; Electric currents; Electrical equipment; Frequency control; Harmonic analysis; harmonic suppression; Harmonics; Harmonics suppression; Metal matrix composites; Modular; modular multilevel converter (MMC); Multilevel; Repetitive control; Simulation; Voltage control

In a modular multilevel converter (MMC), the interaction between switching actions and fluctuating capacitor voltages of the submodules results in second- and other even-order harmonics in the circulating currents. These harmonic currents will introduce extra power loss, increase current stress of p...