KR20170036906A - Apparatus and Method for duplex controlling of high voltage Inverter - Google Patents

Apparatus and Method for duplex controlling of high voltage Inverter Download PDF

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Publication number
KR20170036906A
KR20170036906A KR1020150135343A KR20150135343A KR20170036906A KR 20170036906 A KR20170036906 A KR 20170036906A KR 1020150135343 A KR1020150135343 A KR 1020150135343A KR 20150135343 A KR20150135343 A KR 20150135343A KR 20170036906 A KR20170036906 A KR 20170036906A
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KR
South Korea
Prior art keywords
control unit
control
unit
switching
command
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KR1020150135343A
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Korean (ko)
Inventor
이수병
이현원
박영민
조성준
김종철
이헌수
Original Assignee
현대중공업 주식회사
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Priority to KR1020150135343A priority Critical patent/KR20170036906A/en
Publication of KR20170036906A publication Critical patent/KR20170036906A/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

According to an embodiment of the present invention, a duplex control device of a high voltage inverter comprises: a first control unit and a second control unit configured to control an inverter in accordance with an operation command of an operator; and an operation switch unit configured to transmit a switch signal to the second control unit to allow the second control unit to control the inverter when an error occurs in an operation of the first control unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-

The present invention relates to an apparatus and method for controlling redundancy of a high-voltage inverter.

Certain drive systems that drive a given load typically use a driver that can drive the load. In order for the driver to precisely drive the load in accordance with the operation command, a controller is provided to control the operation of the driver.

For example, when an induction motor is driven by a load, an inverter is usually used as a driver. The inverter converts AC power into DC power, converts the converted DC power into AC power, and supplies the AC power to the load.

A controller is connected to the inverter, and the inverter adjusts the switching speed according to a control signal of the controller, so that the AC power and frequency supplied to the load are adjusted to precisely drive the load.

However, when the controller for controlling such an inverter is unable to operate normally due to an external or internal factor, there is a problem that the driver must be temporarily stopped for replacement.

Korean Patent Publication No. 10-2011-0123168 (November 14, 2011)

In order to solve the conventional problems, the present invention, which is devised to solve the conventional problems, separates a controller into a main controller and a sub controller, and then the main controller controls the driving of the actuator, and the sub controller monitors whether or not a failure occurs in the main controller, And an object of the present invention is to provide a redundancy control apparatus and method of a high-voltage inverter which can stably control driving of a driver by performing a role of a main controller when a failure occurs in the main controller.

According to an embodiment of the present invention, a redundancy control apparatus for a high-voltage inverter includes a first control unit and a second control unit for controlling an inverter according to an operation command of an operator; And an operation switching unit for transmitting a switching signal to the second control unit to cause the second control unit to control the inverter when an error occurs in the operation of the first control unit.

A duplication control method of a fault inverter according to an embodiment of the present invention includes: an operation command providing step in which an operator provides an operation command to a first controller; The first control unit generates a control command according to the operation command to provide the control command to the high-voltage inverter, and provides the operation information of the high-voltage inverter according to the control command to the operator; And a controller for controlling the data line of the first control unit and the operation of the first control unit to be inactivated when the operation of the first control unit fails, A device switching step of activating the device; And a second inverter control step in which the second control unit generates and provides a control command according to the operation command to the high voltage inverter and provides the operation information of the high voltage inverter according to the control command to the operator.

According to an apparatus and method for controlling redundancy of a high-voltage inverter according to an embodiment of the present invention, There is an advantage that it can be continuously controlled without stopping.

1 is a block diagram showing a duplication control apparatus for a high-voltage inverter according to an embodiment of the present invention.
2 is a block diagram of the operation switching unit shown in FIG.
3 is a flowchart illustrating a duplication control method of a high-voltage inverter according to an embodiment of the present invention.
FIG. 4 is a flowchart showing S130 shown in FIG. 3 in more detail.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, in order that those skilled in the art can easily carry out the present invention. In the following detailed description of the preferred embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In the drawings, like reference numerals are used throughout the drawings.

In addition, in the entire specification, when a part is referred to as being 'connected' to another part, it may be referred to as 'indirectly connected' not only with 'directly connected' . Also, to "include" an element means that it may include other elements, rather than excluding other elements, unless specifically stated otherwise.

Hereinafter, an apparatus and method for controlling redundancy of a high-voltage inverter according to an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing a duplication control apparatus for a high-voltage inverter according to an embodiment of the present invention.

1, a redundant control apparatus 100 of a high-voltage inverter according to an embodiment of the present invention may include a first control unit 110, a second control unit 120, and an operation switching unit 130 have.

The first control unit 110 is connected to the input / output unit of the high voltage inverter through the first data line P1. The second control unit 120 is connected to the input / output unit of the high voltage inverter through the second data line P2. .

The input / output unit of the high-voltage inverter includes an analog input / output unit and a digital input / output unit. The analog input / output unit receives the input / output voltage and output current of the induction motor, And outputs the control command (e.g., command / frequency, etc.) provided to the inverter to the inverter.

The digital input / output unit receives an operation signal of an upper controller (e.g., a PLC, etc.), an input / output breaker signal, and the like, and controls the on / off control of the breaker or the like by the first control unit 110 and the second control unit 120 And outputs the provided standby signal and error information to the host controller.

The first control unit 110 performs a function of controlling the inverter according to an operation command of the operator (for example, an operation parameter, an operation command, a command frequency, and the like). The second controller 120 controls the inverter according to an operation command of the operator.

Here, the high-voltage inverter may be operated based on a control command of any one of the first control unit 110 and the second control unit 120.

Each of the first control unit 110 and the second control unit 120 may include a communication unit for transmitting and receiving data to and from the operator and a CPU for outputting a control command for controlling the inverter according to an operation command of the operator.

In addition, the first controller 110 and the second controller 120 operate to exchange acknowledgment signals for confirming whether there is a normal operation or not.

When the first control unit 110 or the second control unit 120 is abnormally operated, the operation switching unit 130 switches the operation of the second control unit 120 or the first control unit 110, Lt; / RTI >

FIG. 2 is a block diagram of the operation switching unit shown in FIG. 1. Referring to FIG. 2, the operation switching unit 130 may include a switching signal generating unit 131 and a switching unit 133.

The switching signal generation unit 131 receives the failure signal A and the switching signal B provided from the first control unit 110 or the second control unit 120 and generates the switching signal. Here, the switching signal B may be a signal that the first control unit or the second control unit confirms whether the normal operation can be performed by the second control unit or the first control unit.

The switching unit 133 activates one of the data line of the first control unit 110 and the data line of the second control unit 120 according to whether the switching signal is applied or not.

Here, the operation switching unit 130 may further include a time delay unit 132 for delaying the switching signal for a predetermined period of time.

The switching signal delayed by the time delay unit 132 is applied to the first control unit 110 or the second control unit 120. The first control unit 110 or the second control unit 120, (120) interrupts communication with the operator.

For example, when the first control unit 110 operates abnormally, the first control unit 110 provides a failure signal and a switching signal to the operation switching unit 130, The second controller 120 communicates with the operator, and the first controller, which receives the switching signal delayed and outputted by the operation switching unit 130, transmits the communication signal to the second controller 120, It is possible to switch the control section without stopping the operation of the inverter.

3 is a flowchart illustrating a method for controlling redundancy of a high-voltage inverter according to an embodiment of the present invention.

3, the redundancy control method (S100) of the high voltage inverter according to an embodiment of the present invention includes an operation command providing step S110, a first inverter controlling step S120, a device switching step S130, And a second inverter control step (S140).

The operation command providing step (S110) may be a step of providing an operation command from the operator to the first control unit 110. [

In the first inverter control step (S110), the first controller (110) generates and provides a control command according to the operation command to the high-voltage inverter, and then provides the operation information of the high-voltage inverter according to the control command to the operator Step.

The first control unit operation step S120 may include checking whether there is a normal operation between the first control unit 110 and the second control unit 120. [

When the first control unit 110 operates abnormally, the device switching step S130 deactivates the operation of the data line P1 and the first control unit 110 of the first control unit connected to the input / output unit of the high voltage inverter And a step of activating an operation of the data line of the second control unit and the operation of the second control unit 120 connected to the input / output unit of the high voltage inverter.

4, the device switching step S130 includes a step S131 of generating a switching signal S131, a step S232 of activating a second controlling part S132, And a control step S133.

When the first control unit 110 operates abnormally, the switch signal generation step S131 generates a switch signal at the operation switching unit 130 based on the failure signal and the switching signal output from the first control unit 110 Lt; / RTI >

The second control unit activation step S132 may be a step in which the second control unit 120 receives the switching signal and activates the function of the CPU to control the operation of the high voltage inverter.

In the data line control step S133, the switching unit 133 receiving the switching signal blocks the connection between the input / output unit of the high voltage inverter and the data line of the first control unit to be deactivated, and the input / May be a step of activating a connection between the data lines of the data driver 120.

Here, the generation of the switching signal may further include delaying the switching signal by a predetermined time using the time delay unit 132 and providing a delayed switching signal to the first control unit 110, (110) interrupts communication with the operator based on the delayed switching signal.

In operation S 140, the second control unit 120 generates a control command according to the operation command and provides the control command to the high-voltage inverter. Then, the operation information of the high-voltage inverter according to the control command is provided to the operator Lt; / RTI >

The apparatus and method for controlling redundancy of a high-voltage inverter according to an embodiment of the present invention have an advantage that a driver in operation can be controlled without stopping.

In addition, the redundancy control apparatus for a high-voltage inverter according to an embodiment of the present invention has a modular structure in which the first control unit and the second control unit are structured in a modular structure so that a damaged device can be easily replaced It is advantageous.

That is, in the present invention, when an error occurs in the first controller (e.g., the main controller) for controlling the driving of the driver, the second controller (e.g., the sub-controller) replaces the first controller It is possible to continue the operation without stopping the entire operation of the drive system even if a failure occurs in the main controller and to replace the main controller in a state in which the sub controller controls the drive of the high voltage inverter, It can be repaired.

For reference, " part " disclosed in an embodiment of the present invention may be a computing device, and the computing device may include at least one processing unit and memory.

The processing unit may include a central processing unit (CPU), a graphics processing unit (GPU), a microprocessor, an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) And may have a plurality of cores.

The memory may be a volatile memory (e.g., RAM, etc.), a non-volatile memory (e.g., ROM, flash memory, etc.), or a combination thereof.

The computing device may also include additional storage. Storage includes, but is not limited to, magnetic storage, optical storage, and the like.

The storage may store computer readable instructions for implementing one or more embodiments disclosed herein, and may also store other computer readable instructions for implementing an operating system, application programs, and the like. The computer readable instructions stored in the storage may be loaded into memory for execution by the processing unit.

On the other hand, the computing device may include communication connection (s) that enable it to communicate with other devices (e.g., temperature measurement unit, zero calibration unit) through the network. Here, the communication connection (s) may include a modem, a network interface card (NIC), an integrated network interface, a radio frequency transmitter / receiver, an infrared port, a USB connection or other interface for connecting a computing device to another computing device . The communication connection (s) may also include wired connections or wireless connections.

Each component of the computing device described above may be connected by various interconnects (e.g., peripheral component interconnect (PCI), USB, firmware (IEEE 1394), optical bus architecture, etc.) As shown in FIG.

As used herein, terms such as " to "refer generally to hardware, a combination of hardware and software, software, or computer-related entities that are software in execution. For example, an element may be, but is not limited to being, a processor, an object, an executable, an executable thread, a program and / or a computer running on a processor. For example, both the application running on the controller and the controller may be components. One or more components may reside within a process and / or thread of execution, and the components may be localized on one computer and distributed among two or more computers.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the present invention is not limited to the disclosed exemplary embodiments, but various changes and modifications may be made without departing from the scope of the present invention.

Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but are intended to illustrate and not limit the scope of the technical spirit of the present invention. The scope of protection of the present invention should be construed according to the claims, and all technical ideas which are within the scope of the same should be interpreted as being included in the scope of the present invention.

100: Duplication control device of high voltage inverter
110:
120:
130:
131:
132: time delay unit
133:

Claims (7)

A first control unit and a second control unit for controlling the inverter according to an operation command of an operator; And
And an operation switching unit for transmitting a switching signal to the second control unit to cause the second control unit to control the inverter when an error occurs in the operation of the first control unit.
The method according to claim 1,
The data lines of the first control unit and the second control unit are connected to a data line,
And an operation switching unit connected to the input / output unit of the inverter.
3. The method of claim 2,
Wherein the operation switching unit comprises:
A switching signal generation unit for generating the switching signal when receiving the switching signal and the failure signal provided by the first control unit; And
And a switching unit connected to the data line of the first control unit and the data line of the second control unit,
The switching unit includes:
Wherein the switching control unit is operative to activate the data line of the second control unit upon receiving the switching signal.
The method of claim 3,
Wherein the operation switching unit comprises:
Further comprising a time delay unit delaying the switching signal for a predetermined period of time, wherein the first control unit interrupts communication with the operator upon receiving the switching signal output from the time delay unit, And the control unit communicates with the operator upon receiving the switch signal.
An operation command providing step in which an operator provides an operation command to the first control unit;
The first control unit generates a control command according to the operation command to provide the control command to the high-voltage inverter, and provides the operation information of the high-voltage inverter according to the control command to the operator;
And a controller for controlling the data line of the first control unit and the operation of the first control unit to be inactivated when the operation of the first control unit fails, A device switching step of activating the device; And
And a second inverter control step of the second control part generating a control command according to the operation command and providing the control command to the high voltage inverter and providing the operation information of the high voltage inverter according to the control command to the operator, Way.
6. The method of claim 5,
In the device switching step,
A changeover signal generation step of, when an error occurs in the operation of the first control unit, generating a changeover signal in the operation changeover unit based on the failure signal and the changeover signal outputted by the first control unit;
The second control unit activation step in which the second control unit is activated by the changeover signal,
And a data line control step of deactivating a data line of the first control part connected to the high voltage inverter according to the switching signal and activating a data line of the second control part connected to the high voltage inverter, Way.
The method according to claim 6,
The switching signal generation step includes:
Delaying the switching signal by a predetermined time using a time delay unit and providing a delayed switching signal to the first control unit,
Wherein the first control unit interrupts the communication with the operator based on the delayed switching signal.
KR1020150135343A 2015-09-24 2015-09-24 Apparatus and Method for duplex controlling of high voltage Inverter KR20170036906A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170155546A1 (en) * 2015-11-30 2017-06-01 Yokogawa Electric Corporation Duplex control device and duplex system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110123168A (en) 2010-05-06 2011-11-14 엘에스산전 주식회사 Apparatus for duplexing human machine interface

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110123168A (en) 2010-05-06 2011-11-14 엘에스산전 주식회사 Apparatus for duplexing human machine interface

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170155546A1 (en) * 2015-11-30 2017-06-01 Yokogawa Electric Corporation Duplex control device and duplex system
US10574514B2 (en) * 2015-11-30 2020-02-25 Yokogawa Electric Corporation Duplex control device and duplex system

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