Damping resonant oscillations in a parallel resonant inverter

Details Damping resonant oscillations in a parallel resonant inverter Damping resonant oscillations in a parallel resonant inverter

1991-02-07

1992-07-07

Sterrett, Jeffrey

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

363 95, H02M 112

Patent

active

051288532

ABSTRACT:
A control process and trigger equipment damps resonant oscillations of a parallel-resonant circuit for a pulse-controlled inverter of a current-source inverter. The pulse-controlled inverter contains turn-off current-converter switches and is linked to an inductive and to a capacitive load. This inductive and capacitive load forms a parallel-resonant circuit. A modulation mode is selected from several stored modulation modes from the system frequency (f.sub.1) of the converter current (I.sub.R). Depending upon a calculated factor (f.sub.1 /f.sub.res) and the selected modulation mode, switching angles (.alpha..sub.1, .alpha..sub.2, . . . , .alpha..sub.n) are determined depending upon system frequency by means of stored, pre-set switching angles. From these switching angles the control times for the pulse-controlled inverter are then generated. Thus, the pulse edges of a selected modulation mode can be adjusted with the system frequency as a function of frequency, enabling the resonant oscillations to be adequately damped over the entire system frequency range.

REFERENCES:
patent: 4504895 (1985-03-01), Steigerwald
patent: 4654773 (1987-03-01), Ito et al.
patent: 4954726 (1990-09-01), Lipman et al.
patent: 4964027 (1990-10-01), Cook et al.
patent: 5001619 (1991-03-01), Nakajima et al.
patent: 5001622 (1991-03-01), Kirchberg et al.
Georg Stanke, Untersuchung Von Modulationsverfahren Fur Pulsstromrichter Mit Hohen Dynamischen Anfordereungen Bei Beschrankter Schaltfrequenz (Dissertation by Georg Stanke), Dec. 18, 1987, Chapters 4.2 and 4.4.2.
Siemens, Din 41 761-Static Power Converters; Static Power Converter Circuits, Denomination and Code Designation, Examples, May 1975, p. 2.
IEEE Transactions on Industry Applications, vol. 25, No. 1, Feb. 28, 1989; N.Y., US, pp. 76-84.
Conference Record of the 1987 IEEE Industry Applications Society, Annual Meeting, Part I, Oct. 23, 1987, pp. 303-311.
IEEE Transactions on Industry Applications, vol. IA-21, No. 5, Sep./Oct. 1985, pp. 1192-1198.

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