Discrete pulse modulation strategies for high-frequency inverter systems

Author

Venkataramanan, Giri ; Divan, D.M. ; Jahns, T.M.

Author_Institution

Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI, USA

fYear

1989

fDate

26-29 Jun 1989

Firstpage

1013

Abstract

High-performance high-frequency inverter systems for UPS (uninterruptible power supply) applications represent a demanding application which cannot easily be realized using conventional hard-switched PWM (pulse-width-modulated) inverter topologies. Adoption of typical soft-switched inverters such as the resonant DC link inverter requires the use of discrete pulse modulation strategies. New controller structures are necessary to cope with stringent voltage regulation and distortion constraints in the presence of unbalanced and nonlinear loads. A controller is presented which utilizes a load-current feedforward strategy with a cost function current regulator to achieve excellent transient performance characteristics. Voltage regulation is ensured using a synchronous frame regulator. Detailed simulation results are presented

Keywords

invertors; pulse width modulation; uninterruptible power supplies; HF; UPS; controller; current regulator; discrete pulse modulation; high-frequency inverter; load-current feedforward strategy; resonant DC link inverter; simulation; transient performance; uninterruptible power supply; voltage distortion; voltage regulation; Nonlinear distortion; Pulse inverters; Pulse modulation; Pulse width modulation inverters; Pulsed power supplies; Regulators; Resonance; Topology; Uninterruptible power systems; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1989. PESC '89 Record., 20th Annual IEEE

Conference_Location

Milwaukee, WI

Type

conf

DOI

10.1109/PESC.1989.48590

Filename

48590