A new parallel processing UPS with the performance of harmonic suppression and reactive power compensation

Author

Jou, Hurng-Liahng ; Wu, Jinn-Chang

Author_Institution

Dept. of Electr. Eng., Nat. Kaohsiung Inst. of Technol., Taiwan

fYear

1994

fDate

20-25 Jun 1994

Firstpage

1443

Abstract

A new current-mode voltage-source parallel processing UPS is proposed in this paper. It uses only one power stage, however, it has the performance of active power line conditioner (APLC) and back-up power. The operation of the proposed UPS can be divided into two modes, APLC and back-up power modes. Due to the use of current-mode control in both operation modes, its transient performance at the moment of the change of operation mode is very good, and the output voltage of back-up power mode will not be distorted under nonlinear load. A prototype is developed and tested to verify its performance. The test results show that the proposed UPS has the expected performance

Keywords

compensation; electric current control; harmonic distortion; load (electric); power factor correction; power system harmonics; reactive power control; uninterruptible power supplies; voltage control; UPS; active power line conditioner; back-up power; current-mode control; harmonic suppression; nonlinear load; output voltage; parallel processing; reactive power compensation; transient performance; Active filters; Emergency power supplies; Parallel processing; Power harmonic filters; Power supplies; Power system harmonics; Reactive power; Testing; Uninterruptible power systems; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, PESC '94 Record., 25th Annual IEEE

Conference_Location

Taipei

Print_ISBN

0-7803-1859-5

Type

conf

DOI

10.1109/PESC.1994.373874

Filename

373874