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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 10066539 B1

PDFFull Text
Date of Patent:
Sep. 04, 2018

Filed:

Feb. 23, 2015

Turbocharger and ship

Applicant:

Mitsubishi Heavy Industries, Ltd., Tokyo, JP;

Inventors:

Yukio Yamashita, Tokyo, JP;

Musashi Sakamoto, Tokyo, JP;

Yoshihisa Ono, Nagasaki, JP;

Assignee:

Mitsubishi Heavy Industries, Ltd., Tokyo, JP;

Attorney:

Berkeley Law & Technology Group, LLP

Primary Examiner:

Thai Ba Trieu

Int. Cl.
CPC ...
F02B 33/44 (2006.01); B60K 6/20 (2007.10); H02P 9/04 (2006.01); F02B 37/04 (2006.01); F02B 37/10 (2006.01); F01N 5/04 (2006.01); F02B 39/10 (2006.01); F02D 29/06 (2006.01); F02B 33/00 (2006.01); H02P 27/06 (2006.01); F02D 41/00 (2006.01);
U.S. Cl.
CPC ...
F02B 37/04 (2013.01); F01N 5/04 (2013.01); F02B 33/00 (2013.01); F02B 37/10 (2013.01); F02B 39/10 (2013.01); F02D 29/06 (2013.01); H02P 27/06 (2013.01); F02D 41/0007 (2013.01); Y02T 10/144 (2013.01); Y02T 10/16 (2013.01);
Abstract

A control unit controls a first power converter so as to make the speed of a motor/generator coincide with a prescribed speed command. A speed command (N*) set by an upper stream control system is inputted to a smoothing unit of the control unit. In the smoothing unit, the speed command (N*) is smoothed by a first-order lag element, and the rate of change is limited by a rate limiter to a prescribed value or less. For the speed command (Ns*) outputted from the smoothing unit, the difference (ΔN) from the actual speed (N) of the motor/generator is calculated in a difference calculator, a control command (S) based on this difference (ΔN) is generated in a control signal generator, and the first power converter is controlled on the basis of this control command (S). Fluctuations in the supply of power to the electric motor are thereby suppressed.

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