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Power supply device

A power supply device and battery technology, applied in the direction of circuit devices, battery circuit devices, DC power supply parallel operation, etc., can solve the problems of generator output reduction, engine speed reduction, stalling, etc., and achieve the effect of improving operating efficiency

Inactive Publication Date: 2006-10-11
HONDA MOTOR CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, the stall is caused by a vicious circle in which when a momentary overload state occurs, the rotational speed of the engine decreases, and the output of the generator decreases due to the decrease, leading to a further overload state

Method used

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Embodiment Construction

[0032] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a block configuration diagram showing the concept of a power supply device of the present invention. In this figure, the generator 1 is constituted by, for example, a three-phase multi-pole magnet generator. The generator 1 is an engine-driven generator connected to the engine 2 and driven by the engine 2, and is a motor generator that can operate as an engine starting motor.

[0033] The rectifier circuit 3 constitutes a drive inverter that rectifies the output of the generator 1 or converts the DC voltage on the output side into a three-phase AC voltage, which is applied to the generator 1 .

[0034] The power conversion unit 4 has a DC regulator 4-1 and an inverter 4-2, converts the output of the rectification circuit 3 into AC power of a predetermined frequency, and outputs it to the load side. In addition, although the DC regulator 4-1 of the powe...

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Abstract

A power supply unit with an engine-driven generator capable of high-efficiency operation even in a light-load area. The generator (1) is driven by the engine. The output of the generator (1) is converted into alternating current of a predetermined frequency through the rectification circuit (2) and the power conversion unit (4) (DC voltage regulator (4-1) and inverter (4-2)), and output to load side. A bidirectional DC-DC converter (5) supplies electric power from a battery (6) to an input side of a power conversion unit (4). When the load current is less than or equal to a predetermined value, the output generated by the battery based on the battery (6) is used to supply power to the load instead of the output generated by the generator based on the generator (1). When the power supply capacity of the battery (6) drops, the output generated by the generator is used to supply power to the load and charge the battery (6) at the same time.

Description

technical field [0001] The present invention relates to a power supply device, and more particularly, to a power supply device that has a generator driven by an engine and can operate efficiently even in a light load region. Background technique [0002] Power generating devices such as engine-driven generators are widely used as power supply devices for various applications ranging from portable use to emergency use. In a power supply unit with a small output, for example, when a load such as a mercury lamp load or a motor load is connected to a load through which a large current flows instantaneously at startup, an overload state may occur momentarily, and the rotation speed of the engine and generator may decrease. A stall (flame out) occurs. That is, the stall is caused by a vicious cycle in which when an instantaneous overload state occurs, the engine speed decreases, and the output of the generator decreases due to the decrease, leading to a further overload state. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/14F02D29/02F02D29/06H02J1/10H02J7/00H02J7/34H02M1/10H02M3/335
CPCF02D29/06H02J1/10H02J7/0068H02J7/34H02M1/10H02M3/33592H02J2310/46Y02B70/10H02J7/14H02M3/335
Inventor 清水元寿江口博之
Owner HONDA MOTOR CO LTD
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