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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10047759 B1

PDFFull Text
Date of Patent:
Aug. 14, 2018

Filed:

Jul. 02, 2015

Method for controlling the speed of cryogenic compressors arranged in series for cooling cryogenic helium

Applicant:

Linde Aktiengesellschaft, Munich, DE;

Inventors:

Andres Kündig, Dietikon, CH;

Can Üresin, Winterthur, CH;

Assignee:

LINDE AKTIENGESELLSCHAFT, Munich, DE;

Attorney:

Millen White Zelano & Branigan, PC

Primary Examiner:

Ronald D Hartman, Jr

Int. Cl.
CPC ...
F04D 27/00 (2006.01); F04D 19/02 (2006.01); G05B 15/02 (2006.01); F25B 9/00 (2006.01); F04D 17/12 (2006.01); F04D 23/00 (2006.01); F25B 49/02 (2006.01);
U.S. Cl.
CPC ...
F04D 27/004 (2013.01); F04D 17/12 (2013.01); F04D 19/02 (2013.01); F04D 23/003 (2013.01); F04D 23/005 (2013.01); F04D 27/001 (2013.01); F25B 9/002 (2013.01); F25B 49/022 (2013.01); G05B 15/02 (2013.01); F25B 2600/0253 (2013.01); F25B 2700/1931 (2013.01); F25B 2700/1933 (2013.01);
Abstract

A method for controlling speeds of compressors arranged in series for compressing a fluid. The desired inlet pressure is predefined and the actual inlet pressure is detected. The actual discharge pressure of the fluid is recorded and the actual total pressure ratio is recorded. A proportional integral value is determined from the deviation of the actual inlet pressure from the desired inlet pressure and a capacity factor is determined from the proportional integral value and the actual total pressure ratio. A model total pressure ratio is determined from the actual total pressure ratio and the capacity factor. A reduced desired speed for each compressor is determined as a function value of the control function associated with the respective compressor. The control function assigns a reduced desired speed to each value pair of capacity factor and model total pressure ratio and is used to adjust the speed of each compressor.

Find Patent Forward Citations

Kündig, Andres. (2018). Method for controlling the speed of cryogenic compressors arranged in series for cooling cryogenic helium (U.S. Patent No. 10047759). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10047759

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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