Title :
A novel control strategy of rectifier for NPC back-to-back converter in HIL system
Author :
Yang Li ; Liming Shi ; Yaohua Li
Author_Institution :
Key Lab. of Power Electron. & Electr. Drive, Inst. of Electr. Eng., Beijing, China
Abstract :
This paper proposed a novel control scheme for rectifier in 3-level neutral-point-clamped (NPC) converter for propulsion of high speed maglev train. In rectifier, the voltage and current are regulated by closed-loop in d-q reference frame. The fluctuation of neutral-point voltage is analyzed, and a new SVPWM modulation strategy is presented to make the NP voltage balance. The performance of rectifier controller is investigated including current harmonic, power factor, neutral point voltages. The strategy is verified in a real-time simulation system of hardware-in-the-loop (HIL) in our Lab.
Keywords :
PWM power convertors; closed loop systems; electric current control; magnetic levitation; railway electrification; voltage control; 3-level NPC converter; 3-level neutral-point-clamped converter; HIL system; NP voltage balance; NPC back-to-back converter; SVPWM modulation strategy; closed-loop systems; current harmonic; current regulation; d-q reference frame; hardware-in-the-loop; high-speed maglev train propulsion; neutral point voltages; neutral-point voltage fluctuation; power factor; real-time simulation system; rectifier control strategy; voltage regulation; Capacitors; Computational modeling; Integrated circuit modeling; Rectifiers; Switches; Vectors; Voltage control; HIL; NPC; back-to-back; rectifier; three level;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2012 15th International Conference on
Conference_Location :
Sapporo
Print_ISBN :
978-1-4673-2327-7
