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.:
Date of Patent:
May. 24, 1988
Filed:
Jan. 28, 1987
Isao Furo, Hyogo, JP;
Suketsugu Kabayama, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An automatic control system for a power plant including a torque such as a steam turbine and a generator for converting the generated torque into electrical output. The control system comprises a torque controller such as a steam control valve for adjusting the amount of torque generation for controlling the amount of power generation, an output signal target setter which sets the target of torque output necessary for a certain electrical output and provides an output signal, a comparator which compares an actual output to a power system connected to the power plant with the target, a command output setter which cuts the command output provided by the comparator to the torque controller at an upper setup level and lower setup level of the system frequency and validates the command output only when the system frequency is within the range, and a power generation controller which receives a torque down command produced by the comparator when the actual output is larger than the setup target and a torque up command produced when the actual output is smaller than the preset target only when the system frequency is within the range as set by the command output setter and provides a control signal to the torque controller.