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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 4829416 B1

PDFFull Text
Date of Patent:
May. 09, 1989

Filed:

Jan. 12, 1987

Apparatus for controlling power transducers of the pulse width

Applicant:
Inventors:

Hiromi Inaba, Katsuta, JP;

Seiya Shima, Katsuta, JP;

Sadao Hokari, Katsuta, JP;

Toshimitsu Tobita, Hitachi, JP;

Hideaki Takahashi, Katsuta, JP;

Shigeta Ueda, Hitachi, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:

Antonelli, Terry & Wands

Primary Examiner:

David Smith, Jr

Int. Cl.
CPC ...
H02M / ; H02P / ;
U.S. Cl.
CPC ...
363 41 ; 318811 ;
Abstract

In a three phase inverter which is composed of transistors turned on or off in accordance with the PWM control, the pulse widths of PWM gate signals for the transistors are determined in accordance with the magnitudes of two of the three phases of the current to be output by the inverter. The load of a processor for generating the gate signals can be reduced to the great extent, and in addition thereto, the waveform of the output current of the inverter is much improved.

Find Patent Forward Citations

Inaba, Hiromi. (1989). Apparatus for controlling power transducers of the pulse width (U.S. Patent No. 4829416). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4829416

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