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Power system

A technology of power supply system and DC power supply, applied in the field of power supply system, can solve the problems of inability to provide minimum load current, reduced reliability, and high equipment cost

Inactive Publication Date: 2006-07-05
THE FURUKAWA BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, if the capacity of the motor generator is increased, the equipment cost becomes higher, or if the number of units is limited, the minimum load current may not be supplied when the power supply unit is stopped during operation for some reason, causing a problem of reduced reliability

Method used

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Embodiment Construction

[0031] A power supply system according to an embodiment of the present invention is composed of a DC power supply device 10 and a controller 20, such as figure 1 shown in the block diagram. An AC input breaker 31 is provided on the input side of the DC power supply 10, and a DC output breaker 32 is provided on the output side. The power supply system provides the required electric power to the load 50 through the DC output circuit breaker 32 . Note that on the output side of the DC output breaker 32, a battery 40 and an auxiliary power source are provided.

[0032] The DC power supply 10 has a plurality of DC power supply units 11 , 12 , 13 and 14 connected in parallel. Each DC power supply unit 11, 12, 13 and 14 is provided with a unit rated current value I u . The DC power supply 10 is capable of adjusting a unit current flowing in each DC power supply unit according to a target value.

[0033] The controller 20 is composed of a required load capacity provider 21 , an o...

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Abstract

In a power supply system connected to a load, a plurality of DC power source units are connected in parallel. Each DC power source unit is provided with a unit rated current value Iu, and outputs a unit current in accordance with a target value. A required load capacity provider provides a capacity value Is required in the load. An operating condition detector detects the number m of DC power supply unit which is in an operating condition among the DC power source units. A target value calculator calculates a value obtained by dividing the value Is with the value m, and provides the calculated value Is / m to the respective operating DC power supply unit as the target value.

Description

technical field [0001] The invention relates to a power supply system composed of a DC power supply device and a controller, wherein the DC power supply device is composed of a unit with a rated current value I u A plurality of DC power supply units are connected in parallel, and the unit current of each power supply unit can be adjusted according to the target value, and the controller is used to provide the target value of the DC power supply unit. Background technique [0002] Known to use the power system to provide electric power to the required load capacity I s load, the power system consists of a DC power supply unit and a controller, and the DC power supply unit is provided with a unit rated current value I u Multiple power supply units are connected in parallel, and the controller is used to control the number of operating units. Using this related power supply system, in the operating unit number m selected by the operating unit quantity co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J9/00H02M7/00H02J1/10G05F1/00H02M1/10H02M3/158H02M7/23
CPCH02M3/1584H02M7/23H02M1/10
Inventor 佐藤修井上裕章
Owner THE FURUKAWA BATTERY CO LTD