Title :
A reduced-rating hybrid filter to suppress neutral current harmonics in three-phase four-wire systems
Author :
Sewan Choi ; Jang, Minsoo
Author_Institution :
Dept. of Control & Instrum. Eng., Seoul Nat. Univ. of Technol., South Korea
Abstract :
This letter proposes a reduced-rating hybrid filter to suppress neutral current harmonics in three-phase four-wire systems. Under unbalanced loading, the proposed filter eliminates only harmonics in the neutral current while it does not affect the fundamental. The VA rating of the inverter is significantly reduced compared to the conventional one since only fundamental current due to unbalanced loading could flow through the inverter switch.
Keywords :
PWM invertors; power conversion harmonics; power harmonic filters; switching convertors; hybrid filter; inverter VA rating; inverter switch; neutral current harmonic suppression; three-phase four-wire systems; Active filters; Circuits; Conductors; Impedance; Magnetic separation; Power harmonic filters; Power system harmonics; Pulse width modulation inverters; Switches; Uninterruptible power systems; Harmonic suppressor; neutral current; three-phase four-wire; unbalanced;
Journal_Title :
Industrial Electronics, IEEE Transactions on
DOI :
10.1109/TIE.2004.831765
