KR20230044598A - System for operating a power supply - Google Patents

Abstract

The present invention relates to a power supply device operating system. According to a preferred embodiment of the present invention, the power supply device operating system comprises: a central collection unit that collects an error rate between a DC voltage value set by a user and a corrected DC voltage setting value and an error rate between a DC current value set by the user and a corrected DC current setting value; and a central diagnostic unit that determines whether at least one of the error rate between the DC voltage value set by the user and the corrected DC voltage setting value and the error rate between the DC current value set by the user and the corrected DC current setting value belongs to a standard allowance error range. Therefore, the present invention is to provide the power supply device operating system for accurately managing an output.

Description

System for operating a power supply}

The present invention relates to a power supply operating system.

Power supplies are utilized in various fields. The present invention relates to a power supply used for experiments or education. The power supply can receive AC power and convert it to DC for output. At this time, the power supply device may output DC voltage and DC current set by the user. Reliability of accurately outputting the DC voltage and DC current set by the user is very important for the power supply.

1. Korea Patent Publication No. 10-2013-0132758 (published date: 2013.12.05)

An object of the present invention is to provide a power supply operating system in which output is accurately managed.

The power supply operating system according to a preferred embodiment of the present invention collects the error rate between the DC voltage value set by the user and the corrected DC voltage set value and the error rate between the DC current value set by the user and the corrected DC current set value. Central collection unit that: And at least one of the error rate between the DC voltage value set by the user and the corrected DC voltage set value and the error rate between the DC current value set by the user and the corrected DC current set value falls within the standard tolerance range. It includes a central diagnostic unit that determines whether or not it belongs.

Here, at least one of the error rate between the DC voltage value set by the user and the corrected DC voltage set value and the error rate between the DC current value set by the user and the corrected DC current set value does not fall within the standard tolerance range. If determined, the central diagnosis unit may provide a maintenance alarm to the outside.

And, if it is determined that both the error rate between the DC voltage value set by the user and the corrected DC voltage set value and the error rate between the DC current value set by the user and the corrected DC current set value belong to the standard tolerance range, The central diagnostic unit determines whether at least one of the error rate between the DC voltage value set by the user and the corrected DC voltage set value and the error rate between the DC current value set by the user and the corrected DC current set value exceeds a relative tolerance. can judge

In addition, the relative tolerance is the average value of the error rate between the most recently collected DC voltage value set by the user and the calibrated DC voltage set value for the power supply unit with the same manufacturing year and month among all power supply units to be managed, and all It may be an average value of an error rate between a DC current value set by a most recently collected user and a corrected DC current set value for a power supply device having the same year of manufacture among power supplies.

And, if it is determined that both the error rate between the DC voltage value set by the user and the corrected DC voltage setting value and the error rate between the DC current value set by the user and the corrected DC current setting value do not exceed the relative tolerance , the central diagnosis unit may determine that the power supply is normal.

And, it is determined that at least one of the error rate between the DC voltage value set by the user and the corrected DC voltage set value and the error rate between the DC current value set by the user and the corrected DC current set value exceeds the relative tolerance. Then, the central diagnostic unit may provide a maintenance alarm of the power supply to the outside.

According to the present invention, the performance of the power supply can be accurately managed through remote management of the service device and self-diagnosis of the power supply.

1 is a schematic diagram of a power supply operating system according to an embodiment of the present invention.
2 is a functional block diagram of the power supply of FIG. 1;
FIG. 3 is a functional block diagram of a control unit of FIG. 2 .
4 is a functional block diagram of the local terminal of FIG. 1;
5 is a functional block diagram of the service device of FIG. 1;
6A is a flow chart of the power supply operation process of the power supply.
6B is a flow chart of the power supply operation process of the power supply.
7 is a flow chart of a process for performing diagnostics in a no-load state of the power supply.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms or words used in this specification and claims should not be construed as being limited to the usual or dictionary meaning, and the inventor appropriately uses the concept of the term in order to explain his/her invention in the best way. It should be interpreted as meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined. Therefore, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention, so various alternatives can be made at the time of this application. It should be understood that there may be equivalents and variations.

Hereinafter, a power supply operating system according to an embodiment of the present invention will be described with reference to FIGS. 1 to 7 attached. In order to clarify the gist of the present invention, descriptions of conventionally known matters are omitted or simplified.

Referring to FIG. 1, the power supply operating system 1000 includes at least one power supply 100, a first communication network 200, a local terminal 300, a second communication network 400 and a service device 500. can include The first communication network 200 and the second communication network 400 may be implemented using at least one of wired and wireless communication networks. Communication standards applied to the first and second communication networks 200 may not be limited.

Referring to FIG. 2 , the power supply device 100 may include a source unit 110, a conversion unit 120, a communication unit 130, a control unit 140, and an output terminal 150.

The source unit 110 may receive AC power (Alternating Current Source) and supply it to the conversion unit 120 .

The conversion unit 120 may receive AC power and perform a power conversion process to output DC power (Direct Current Source) having a set DC voltage value and a set DC current value. The conversion unit 120 may perform power conversion in a well-known manner. For example, the conversion unit 120 may perform AC/DC conversion in a preset manner and output DC power having set voltage and current values in a DC scaling manner. The conversion unit 120 may vary and output the voltage value and the current value of the DC power according to the control signal of the control unit 140 . The conversion unit 120 may be of a programmable type that is frequently programmed with preset parameters according to an external control signal.

The output terminal 150 is connected to the conversion unit 120 through the output line 1, receives the set DC voltage value and the set DC current value output by the conversion unit 120 through the output line 1, and receives the conversion unit The set DC voltage value and the set DC current value supplied from 120 can be output to the outside. The output terminal 150 may have at least one channel.

The communication unit 130 may support communication between the control unit 140 and the local terminal 300 .

The control unit 140 may control and diagnose the conversion unit 120 . The control unit 140 may control the conversion unit 120 so that the conversion unit 120 outputs DC power with a set DC voltage value and a set DC current value.

A sensing unit 2 may be provided on the output line 1 . The sensing unit 2 may measure a voltage value and a current value of DC power of the conversion unit 120 output through the output line 1 .

A main switch MS for electrically opening and closing between the output line 1 and the output terminal 150 may be installed in the output line 1 under the control of the control unit 140 .

The output line 1 may include at least one branch line 1-1, 1-2, ..., 1-n branching from the output line. Through the branch lines (1-1, 1-2, ..., 1-n), the internal load (L1, L2, ... , Ln) can be connected in parallel to the output line (1). One end of each branch line (1-1, 1-2, ..., 1-n) is connected to the output line (1), and the branch line (1-1, 1-2, ..., 1-n) Each other end may be grounded. When there are a plurality of branch lines (1-1, 1-2, ..., 1-n), the internal load provided for each branch line (1-1, 1-2, ..., 1-n) ( The magnitudes of the impedances of L1, L2, ..., L3) may be different.

Each branch line (1-1, 1-2, ..., 1-n) has an auxiliary switch that opens and closes the flow of current to the branch line (1-1, 1-2, ..., 1-n) (S1, S2, ... , Sn) may be provided. The auxiliary switch (S1, S2, ..., Sn) may perform an opening and closing operation under the control of the control unit 140.

The output line 1 may be provided with an open line 3 branching from the output line. An open switch (So) for opening and closing the flow of current to the open line (3) may be provided in the open line (3). The opening switch So may perform an opening/closing operation under the control of the controller 140 .

Referring to FIG. 3 , the controller 140 may include a setting unit 141 and a diagnosis unit 142 . The setting unit 141 may control the conversion unit 120 so that the conversion unit 120 outputs DC power with the set DC voltage value and the set DC current value. A detailed operation of the setting unit 141 will be described later.

The diagnostic unit 142 may self-diagnose the power supply 100 in a state in which the power supply 100 is not connected to the outside (in other words, in a state in which the output terminal 150 is open). A detailed operation of the diagnosis unit 142 will be described later.

Referring to FIG. 4 , the local terminal 300 may include an interface unit 310 , an information collection unit 320 and a communication unit 330 . The local terminal 300 may be installed to match at least one power supply device 100 . A program for interworking with the power supply device 100 and the service device 500 may be installed in the local terminal 300 .

The interface unit 310 may provide an interface for a user's setting operation and an interface for self-diagnosis of the power supply device 100 . When a user sets the output DC voltage value and the output DC current value of the conversion unit 120 through the interface, the interface unit 310 converts the set values (the output DC voltage value and the output DC current value of the conversion unit 120). It can be provided to the setting unit 141. When the user selects self-diagnosis, the interface unit 310 may request self-diagnosis to the diagnosis unit 142 and receive a result for the diagnosis unit 142 to perform the self-diagnosis.

The information collection unit 320 is a DC voltage set value and a corrected DC current corrected so that the DC output of the converter 120 set by the setting unit 141 satisfies the output condition as the state value of the power supply device 100. Set values may be collected and transmitted to the central collection unit 520 .

Also, the information collection unit 320 may receive a self-diagnosis result from the diagnosis unit 142 and display the self-diagnosis result externally through the interface 310 .

The communication unit 330 may support communication between the power supply device 100 and the local terminal 300 and between the local terminal 300 and the service device 500 .

Referring to FIG. 5 , the service device 300 may include a central collection unit 510 , a central diagnosis unit 520 and a communication unit 530 .

The central collection unit 510 is a state value of the power supply device 100 from the information collection unit 320 of the plurality of local terminals 300 (eg, the conversion unit 120 set by the setting unit 141). The DC voltage set value and the corrected DC current set value corrected so that the DC output satisfies the output condition) and the self-diagnosis result of the diagnosis unit 142 may be collected. In addition, the central diagnosis unit 520 may provide diagnosis and maintenance alarms using the collected information. The communication unit 530 may support communication between the local terminal 300 and the service device 500 .

Hereinafter, specific operations of the power supply operating system will be described. First, the power supply and remote diagnosis process of the power supply device will be described.

Referring to FIG. 6 , first, the setting unit 141 may receive a DC voltage value and a DC current value set by the user from the interface unit 310 (S601). Before the setting unit 141 receives the DC voltage and DC current values set by the user from the interface unit 310, the power supply 100 may be in an initial state. In an initial state, the controller 140 may turn off the main switch MS.

Then, the setting unit 141 may control the conversion unit 120 based on the DC voltage value and DC current value set by the user to output the DC voltage and DC current set by the user (S602). In S602, the main switch MS may maintain an OFF state under the control of the control unit 140.

Also, the setting unit 141 may monitor the DC output of the conversion unit 120 when the main switch MS is turned off and the internal load is connected (S603). Monitoring of S603 is performed for an initial test in the load input state. In order to form the internal load connection state, the setting unit 141 responds to receiving the DC voltage value and DC current value set by the user from the interface unit 310 at least one auxiliary switch (S1, S2, Sn) can turn on In order to increase the reliability of the initial test, the interface unit 310 may receive an impedance value or a range of impedance values of a load to be connected to the output terminal 150 from a user. Then, the setting unit 141 has the smallest error with the impedance value of the load to be connected to the output terminal 150 received from the interface unit 310 or the impedance value range (L1, L2, ... , Ln) can be selected. Then, the setting unit 141 turns on only the auxiliary switch corresponding to the internal load included in the selected parallel combination so that the internal load included in the selected parallel combination is connected to the output line 1, and the internal load not included in the parallel combination. The auxiliary switch corresponding to can be turned off. The setting unit 141 may monitor the output of the conversion unit 120 using the sensing value of the sensing unit 2 .

Then, the setting unit 141 may determine whether the DC output of the conversion unit 120 satisfies the output condition (S604). Here, the output condition may be a tolerance range of a DC voltage value and a DC current value set by a user.

In S604, if it is determined that the output condition is not satisfied, the setting unit 141 may correct the output of the conversion unit 120 based on the output monitoring result (S605). At this time, when the DC voltage value output by the monitored conversion unit 120 is higher than the DC voltage value set by the user, the setting unit 141 may perform correction to lower the DC voltage value set by the user, and monitoring When the DC voltage value output by the conversion unit 120 is lower than the DC voltage value set by the user, the setting unit 141 may perform correction to increase the DC voltage value set by the user, and the monitored conversion unit When the DC current value output by 120 is higher than the DC current value set by the user, the setting unit 141 may perform correction to lower the DC current value set by the user, and the monitored conversion unit 120 When the DC current value output by the user is lower than the DC current value set by the user, the setting unit 141 may perform correction to increase the DC current value set by the user. S605 may continue until the output of the conversion unit 120 satisfies the output condition. In S605, the setting unit 141 corrects for subtracting or increasing or decreasing the DC voltage value and/or DC current value set by the user in units of the preset unit voltage value and/or unit current value, and then returns to step S603. can

In S604, if it is determined that the output condition is satisfied, the setting unit 141 can electrically disconnect all internal loads (L1, L2, ..., Ln) from the output line 1, and the setting unit 141 ) can supply the output of the conversion unit 120 to the output terminal 150 by turning on the main switch MS (S606). At this time, the setting unit 141 may turn off all auxiliary switches (S1, S2, ..., Sn).

And, the setting unit 141 may monitor the output of the conversion unit 120 (S607). In this case, the output of the conversion unit 120 to be monitored may be an output in which an influence of a load of an external device (not shown) connected to the output terminal 150 is actually reflected.

Then, the setting unit 141 may determine whether the DC output of the conversion unit 120, in which the influence of the load of the external device connected to the output terminal 150 is reflected, satisfies the output condition (S608). Here, the output condition may be a tolerance range of a DC voltage value and a DC current value set by a user.

In S608, if it is determined that the output condition is not satisfied, the setting unit 141 may correct the output of the conversion unit 120 based on the output monitoring result (S609). At this time, when the DC voltage value output by the monitored conversion unit 120 is higher than the DC voltage value set by the user, the setting unit 141 may perform correction to lower the DC voltage value set by the user, and monitoring When the DC voltage value output by the conversion unit 120 is lower than the DC voltage value set by the user, the setting unit 141 may perform correction to increase the DC voltage value set by the user, and the monitored conversion unit When the DC current value output by 120 is higher than the DC current value set by the user, the setting unit 141 may perform correction to lower the DC current value set by the user, and the monitored conversion unit 120 When the DC current value output by the user is lower than the DC current value set by the user, the setting unit 141 may perform correction to increase the DC current value set by the user. S609 may continue until the output of the conversion unit 120 satisfies the output condition. In S609, the setting unit 141 corrects for subtracting or increasing or decreasing the DC voltage value and/or DC current value set by the user in units of the preset unit voltage value and/or unit current value, and then returns to step S607. can

In S608, if it is determined that the output condition is satisfied, the setting unit 141 corrects the DC output of the conversion unit 120 in which the influence of the load of the external device connected to the output terminal 150 is reflected to satisfy the output condition. The voltage setting value and the corrected DC current setting value may be transmitted to the information collection unit 320 (S610). Here, if the correction is not performed, the corrected DC voltage set value and the corrected DC current so that the output of the conversion unit 120 in which the influence of the load of the external device connected to the output terminal 150 is reflected satisfies the output condition. The set value may be the same as the DC voltage value and DC current value set by the user.

Then, the information collection unit 320 is a DC voltage corrected so that the DC voltage value set by the user and the output of the conversion unit 120 in which the influence of the load of the external device connected to the output terminal 150 is reflected satisfies the output condition. Calculate the error rate between the set values, and set the corrected DC current so that the DC current value set by the user and the output of the conversion unit 120 in which the influence of the load of the external device connected to the output terminal 150 is reflected satisfies the output condition. The error rate between the values is calculated, and the error rate between the calculated DC voltage value set by the user and the corrected DC voltage set value and the error rate between the DC current value set by the user and the corrected DC current set value are stored in the central collection unit 510. It can be delivered (S611).

In addition, the central diagnosis unit 520 determines that at least one of the error rate between the DC voltage value set by the user and the corrected DC voltage set value and the error rate between the DC current value set by the user and the corrected DC current set value is within the standard tolerance range. It can be determined whether it belongs to (S612).

In S612, if it is determined that at least one of the error rate between the DC voltage value set by the user and the corrected DC voltage set value and the error rate between the DC current value set by the user and the corrected DC current set value does not fall within the standard tolerance range. , The central diagnosis unit 520 may provide a maintenance alarm to the outside (S613).

In contrast, if it is determined in S612 that both the error rate between the DC voltage value set by the user and the corrected DC voltage set value and the error rate between the DC current value set by the user and the corrected DC current set value are within the standard tolerance range, The central diagnosis unit 520 determines whether at least one of the error rate between the DC voltage value set by the user and the corrected DC voltage set value and the error rate between the DC current value set by the user and the corrected DC current set value exceeds the relative tolerance. It can be determined whether or not (S614). Here, the relative tolerance is the average value of the error rate between the most recently collected DC voltage value set by the user and the calibrated DC voltage set value for the power supply unit with the same manufacturing year among all power supplies to be managed and all power supplies to be managed. It may be an average value of an error rate between a DC current value set by a most recently collected user and a calibrated DC current set value for a power supply device having the same year of manufacture among supply devices.

In S614, if it is determined that both the error rate between the DC voltage value set by the user and the corrected DC voltage set value and the error rate between the DC current value set by the user and the corrected DC current set value do not exceed the relative tolerance, the center The diagnosis unit 520 may determine that the power supply device 100 is normal (S616).

In S614, if it is determined that at least one of the error rate between the DC voltage value set by the user and the corrected DC voltage set value and the error rate between the DC current value set by the user and the corrected DC current set value exceeds the relative tolerance, The central diagnosis unit 520 may provide a maintenance alarm of the power supply to the outside (S615).

The process of FIG. 6 may omit some steps or may be performed in a different order.

Hereinafter, the self-diagnosis operation of the power supply device will be described.

Referring to FIG. 7 , the diagnosis unit 142 may start a no-load test in a no-load state (S701). Before starting the no-load test, the diagnosis unit 142 turns off the main switch (MS) and all auxiliary switches (S1, S2, ..., Sn) and turns on only the open switch (So), the power supply device can be put into a no-load state.

In addition, the diagnosis unit 142 may control the conversion unit 120 to output DC power according to the scanned DC voltage set value and the scanned DC current set value (S702). In this case, the DC voltage set value may be varied in units of a preset unit voltage value, and the DC current set value may be varied in units of a preset unit current value. Diagnostic section 142 so that all DC voltage set values variable in unit voltage value units and all DC current set values variable in unit current value units are scanned for all possible combinations of DC voltage set values and DC current set values. ) may control the output of the conversion unit 120. Here, the preset unit voltage value unit and the preset unit current value unit may be the same as the unit electric value unit and unit current value unit used in S605 and S609.

Then, the diagnosis unit 142 may determine whether there is a set value that does not satisfy the output condition among the DC output of the converter 120 according to the DC voltage set value and the DC current set value to be scanned (S703). . Here, the output condition may be a tolerance range of a DC voltage value and a DC current value set by the diagnosis unit 142 .

In S703, if it is determined that there is a set value that does not satisfy the output condition, the diagnosis unit 142 may determine that the power supply is abnormal (S704).

In S703, if it is determined that there is no set value that does not satisfy the output condition, the diagnosis unit 142 may determine that the power supply is normal (S705).

The determination results in S704 and S705 may be displayed through the interface 310 . And, the determination results in S704 and S705 may be transmitted to the central collection unit 510 . In addition, the central collection unit 510 receiving the result determined to be abnormal in the power supply in S704 may provide a maintenance alarm to the outside.

The process of FIG. 7 may omit some steps or may be performed in a different order.

100: power supply
110: source unit
120: conversion unit
130: Ministry of Communication
140: control unit
141: setting unit
142: diagnosis unit
150: output terminal
S1, S2, Sn: Auxiliary switch
L1, L2, Ln: Internal load
MS: main switch
So: open switch
1: output line
1-1, 1-2, 1-n: branch line
2: sensing unit
3: open line
200: 1st communication network
300: local terminal
310: interface unit
320: information collection unit
330: Communication Department
400: second communication network
500: service device
510: central collection unit
520: central diagnosis unit
530: Ministry of Communication

Claims (6)

A central collection unit that collects the error rate between the DC voltage value set by the user and the corrected DC voltage set value and the error rate between the DC current value set by the user and the corrected DC current set value: and
Determining whether at least one of the error rate between the DC voltage value set by the user and the corrected DC voltage set value and the error rate between the DC current value set by the user and the corrected DC current set value falls within a standard tolerance range Power supply operating system with central diagnostics.
According to claim 1,
If it is determined that at least one of the error rate between the DC voltage value set by the user and the corrected DC voltage set value and the error rate between the DC current value set by the user and the corrected DC current set value does not fall within the standard tolerance range , The power supply operating system, characterized in that the central diagnostic unit provides a maintenance alarm to the outside.
According to claim 1,
When it is determined that both the error rate between the DC voltage value set by the user and the corrected DC voltage set value and the error rate between the DC current value set by the user and the corrected DC current set value belong to the standard tolerance range, the center The diagnosis unit determines whether at least one of the error rate between the DC voltage value set by the user and the corrected DC voltage set value and the error rate between the DC current value set by the user and the corrected DC current set value exceeds a relative tolerance. A power supply operating system, characterized in that for.
According to claim 3,
The relative tolerance is the average value of the error rate between the most recently collected DC voltage value set by the user and the calibrated DC voltage set value for power supplies with the same manufacturing year and month among all power supplies to be managed and all power supplies to be managed. A power supply operating system, characterized in that the average value of the error rate between the DC current value set by the most recently collected user and the calibrated DC current set value for the power supply unit having the same manufacturing year among the devices.
According to claim 3,
If it is determined that both the error rate between the DC voltage value set by the user and the corrected DC voltage setting value and the error rate between the DC current value set by the user and the corrected DC current setting value do not exceed the relative tolerance, the The power supply operating system, characterized in that the central diagnostic unit determines that the power supply is normal.
According to claim 3,
If it is determined that at least one of the error rate between the DC voltage value set by the user and the corrected DC voltage setting value and the error rate between the DC current value set by the user and the corrected DC current setting value exceeds the relative tolerance, The power supply operating system, characterized in that the central diagnostic unit provides a maintenance alarm of the power supply to the outside.

Images