JPH09179663A - System power source controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To continue the operation of an important load device by adding a load device selecting and disconnecting means for selecting the load device of a low priority order and stopping the operation when a part of plural power source modules fails. SOLUTION: A load device selecting and disconnecting part 1 calculates total power suppliable at present based on fault informing signals and rated power information originated from the power source modules 5-1-5-n. Then, based on the total power suppliable at present and the priority orders and individual power consumption information among the load devices 7-1-7-n, the load devices 7-1-7-n are listed up as operation stoppage candidates successively from the one of the low priority order until the total power consumption of the load devices becomes less than the total power suppliable at present. Then, disconnection signals for disconnecting the load devices turned to the operation stoppage candidates from the output bus line 6 of the power source modules 5-1-5-n are sent out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system power supply control device.

[0002]

2. Description of the Related Art In recent years, in electronic devices such as information processing devices, the amount of power to be processed has increased due to an increase in the amount of data to be processed.
The parallel operation of power supply modules is increasing. (For example,
(See Japanese Patent Laid-Open No. 4-322129) When operating N power supply modules in parallel, each power supply module has at least {1 + 1 / N-1] of electric power required for a total load (total of each load) at a normal time. } It is usual to have twice the power supply capacity. (For example, see Japanese Patent Laid-Open No. 5-328605) If one power supply module fails, the above-mentioned publication describes a technique for automatically sharing the load among the surviving power supply modules. However, the failure of the power supply module gradually increases, the redundancy as the system power supply is lost, and at the stage when it is recognized as an overload, the safety measures of the surviving power supply module are activated and the power supply to the load is reduced. The supply is cut off.

[0003]

The above-described conventional system power supply control device loses redundancy even when there is priority among a plurality of loads, and when it is recognized as an overload, There was a drawback that all loads were cut off at the same time.

[0004]

A system power supply control device of the present invention is a system power supply control device for controlling a system power supply for supplying a required power by operating a plurality of power supply modules in parallel for a plurality of loads. A) Information storage means for storing operation priority and individual power consumption information of a plurality of load devices, and rated power information of each power supply module,
(B) calculating the power that can be currently supplied based on the failure notification signal and the rated power information that are issued from each power supply module, the total power that can be currently supplied, and the operation priority order of the plurality of load devices and Based on the individual power consumption information, the load devices are listed in descending order of priority as operation stop candidates until the total power consumption of the load devices becomes equal to or lower than the total power that can be currently supplied, Load device selection disconnection means for transmitting a disconnection signal for disconnecting the load device that has become the operation stop candidate from the output bus bar of each power supply module.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of the present invention.

The system power supply controller shown in FIG. 1 is (A)
Information storage unit 2 for storing operation priority and individual power consumption information of load devices 7-1 to 7-n and rated power information of each power supply module 5-1 to 5-n, (B) power supply module The total power that can be currently supplied is calculated based on the failure notification signals issued from 5-1 to 5-n and the above-mentioned rated power information, and the total power that can be currently supplied and the load device 7-
Based on the operation priority of 1 to 7-n and the individual power consumption information, the total power consumption of the load devices described above is supplied in order from the load device 7-1 to 7-n with the lowest priority. The operation stop candidates are listed up until the total electric power becomes less than or equal to the total possible electric power, and a disconnection signal for disconnecting the load device which is the operation stop candidate from the output bus bar 6 of the power supply modules 5-1 to 5-n is transmitted. The load device selecting / disconnecting unit 1 is included.

Load device selection disconnection unit 1 and power supply module 5
-1 to 5-n is the power control interface 3-1 to 3
-Depending on n, the load device selective cutting unit 1 and the load device 7-1 ~
7-n are connected by logic control interfaces 8-1 to 8-n.

As a load device having a low priority, for example, a printing device, a display device, etc. can be considered. It is also conceivable that the load device selection / disconnection means sends an operation stop signal to the failed power supply module before the safety means of the failed power supply module itself is activated.

[0009]

The system power supply control device of the present invention is provided with a load device selection disconnecting means for selecting a load device having a lower priority and stopping its operation when a part of a plurality of power supply modules fails. This has the effect that the operation of the important load device can be continued.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

[Explanation of Codes] 1 load device selecting / disconnecting means 2 information storage unit 5-1 to 5-3 power supply module 7-1 to 7-n load device

Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display location H02J 1/10 H02J 1/10

Claims (2)

[Claims] 1. A system power supply control device for controlling a system power supply for supplying required power by operating a plurality of power supply modules in parallel for a plurality of loads, comprising: (A) operation priority order and individual consumption of the plurality of load devices. Information storage means for storing power information and rated power information of each power supply module, (B) calculating the currently available power based on the failure notification signal emitted from each power supply module and the rated power information However, based on the total power that can be currently supplied, the operation priority order and the individual power consumption information of the plurality of load devices, the total power consumption of the load devices is in order from the one having the lowest priority among the load devices. Until the total power that can be supplied at present is less than or equal to the operation stop candidates, the load devices that become the operation stop candidates are output from the power supply modules. Load device selection cutting means for sending a disconnect signal to disconnect from the bus, the system power supply control device which comprises a city. 2. The system power supply control device according to claim 1, wherein the load device selective disconnecting means sends an operation stop signal to the failed power supply module before the safety means of the failed power supply module itself is activated. .