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Motor-generator equipment

A technology of generators and engines, which is applied in the direction of mechanical equipment, engine components, engine control, etc., and can solve the problems of reduced operating efficiency, loads imposed by starting devices or other components, etc.

Inactive Publication Date: 2002-03-20
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Frequent heating operations cause reduction in operating efficiency
In particular, operational efficiency is greatly reduced in cases where the interconnection is temporarily removed to stop the engine and then re-established within a short interval of time
Furthermore, if the protective device is switched on to stop the engine each time the interconnection is removed, an undesired load may be placed on the starting device or other components

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0018] An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. figure 1 Is the flow chart of the engine generator equipment. As shown in the figure, an engine-driven generator 10 includes an engine 11 and a generator 12 . The generator 12 is driven by the engine 11 for generating an AC output corresponding to the rotational speed. The generator 12 includes a rotor connected to the engine 11 and a stator wound with three-phase windings. The output terminals of the three-phase windings are connected to the inverter unit 13 . The inverter unit 13 converts the AC output of the generator 12 into an AC whose properties are comparable to that of the commercial power supply (in terms of voltage, frequency, noise, and other factors), and then connects the output to the commercial power system, where each phase Synchronized with each phase of the system.

[0019] More specifically, the inverter unit 13 includes a converte...

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PUM

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Abstract

This can prevent declination in the operational efficiency due to the stop motion of an engine at the cancellation of the interconnection and minimize loads exerted on the startup device for the engine. A system protector (138) is provided for generating a fault signal when detecting a fault on the system source (14). Upon receiving the fault signal, an interconnection relay (135) is opened to cancel the interconnection and simultaneously, a timer (39) is started. The cancellation permits the engine (11) to run with no load. When the fault signal is maintained until the setting duration of the timer (39) is timed up, a time-out signal is released to stop the engine (11). On the other hand, when the fault signal is eliminated by canceling the cause of the fault before the setting duration of the timer (39) is passed, the interconnection relay (135) is closed to establish the interconnection again and the timer (39) is reset.

Description

technical field [0001] The present invention relates to an engine generator device and a combined power generation system, in particular to an engine generator device used as a private generator or a small combined power generation device with the function of interconnecting with an electric power system, and a combined power generation system including the engine generator device system. technical background [0002] Generator equipment for private use has been widely used in emergency situations of power outages or power failures. More recently, privately-used cogeneration plants that can be interconnected with the power system to improve operational efficiency have come into widespread use. Such combined private use power plants include small generators driven by gasoline engines or gas engines fueled by gaseous fuels such as town gas. [0003] In order to smoothly interconnect with the power system, combined generator equipment needs to meet the technical requirement...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D45/00F02D29/06F02G5/04F24H1/00H02J3/38H02P9/00H02P9/04H02P9/08
CPCH02J3/38H02J2003/388Y02E20/14H02J3/388
Inventor 小谷善明福嶋友树上村健二
Owner HONDA MOTOR CO LTD