Title :
A new method of damping harmonic resonance at the DC-link of a large-capacity rectifier-inverter system
Author :
Tanaka, Toshihiko ; Funabiki, Shigeyuki
Author_Institution :
Shimane Univ., Matsue, Japan
Abstract :
This paper proposes a new method of damping harmonic resonance at the DC-link of a large-capacity rectifier-inverter system such as in rapid-transit railways. A voltage-source PWM converter is connected in series to the DC capacitor of the rectifier through a matching transformer, acting as a damping resistor to the DC capacitor current. No filters are needed to extract harmonic components from the DC capacitor current. This system is thus highly stable and the required rating of the PWM converter is less than one-thousandth of that previously proposed. The basic principle of the proposed damping method is discussed in detail, then confirmed using digital computer simulation. The simulation results demonstrate the excellent practicability of the proposed damping method
Keywords :
PWM power convertors; capacitors; damping; harmonics suppression; invertors; railways; rapid transit systems; rectifying circuits; resonance; transformers; DC capacitor; DC capacitor current; DC-link; damping resistor; digital computer simulation; harmonic components extraction; harmonic resonance damping; large-capacity rectifier-inverter system; matching transformer; rapid-transit railways; rectifier; series connection; voltage-source PWM converter; Capacitors; Computational modeling; Computer simulation; Damping; Power harmonic filters; Pulse width modulation converters; Rail transportation; Rectifiers; Resistors; Resonance;
Conference_Titel :
Power Electronics and Drive Systems, 1999. PEDS '99. Proceedings of the IEEE 1999 International Conference on
Print_ISBN :
0-7803-5769-8
DOI :
10.1109/PEDS.1999.792824
