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KR20090036805A - Wireless 3-phase ffu control equipments - Google Patents

Wireless 3-phase ffu control equipments Download PDF

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Publication number
KR20090036805A
KR20090036805A KR1020070102070A KR20070102070A KR20090036805A KR 20090036805 A KR20090036805 A KR 20090036805A KR 1020070102070 A KR1020070102070 A KR 1020070102070A KR 20070102070 A KR20070102070 A KR 20070102070A KR 20090036805 A KR20090036805 A KR 20090036805A
Authority
KR
South Korea
Prior art keywords
motor
unit
wireless
control
power
Prior art date
Application number
KR1020070102070A
Other languages
Korean (ko)
Inventor
정일호
Original Assignee
(주)가보기계산업
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)가보기계산업 filed Critical (주)가보기계산업
Priority to KR1020070102070A priority Critical patent/KR20090036805A/en
Publication of KR20090036805A publication Critical patent/KR20090036805A/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/02—Details of starting control
    • H02P1/029—Restarting, e.g. after power failure
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • H02P1/24—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual AC commutator motor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • H02P1/54—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting two or more dynamo-electric motors
    • H02P1/58—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting two or more dynamo-electric motors sequentially
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/02—Providing protection against overload without automatic interruption of supply
    • H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
    • H02P29/027—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the fault being an over-current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/60—Controlling or determining the temperature of the motor or of the drive

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

The present invention relates to a wireless three-phase FFU control device which is supplied with three-phase power, controls the ON / OFF function of the fan filter unit by a wireless command packet, and detects overcurrent and overheating to block the operation of the motor. DC power supply for converting and supplying the AC voltage applied from the DC to the DC, a power control unit for receiving the AC power and applying the motor operation control signal to the motor, a wireless communication unit for transmitting the operation control signal of the motor in a wireless command packet and DC And a control unit configured to receive driving power through a power supply unit and to transmit a motor operation control signal transmitted through the wireless communication unit to the power control unit to control the operation of the motor.

According to the present invention can be provided with a wireless three-phase FFU control device that receives a three-phase AC power and controls the ON / OFF function of the FFU by a wireless command packet, and detects overcurrent and overheating to block the operation of the motor.

Description

Wireless 3-Phase FFU Control Equipments

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless three-phase fan filter unit controller, and in particular, is supplied with three-phase AC power, and ON / OFF of a fan filter unit (hereinafter referred to as 'FFU') by a wireless command packet. The present invention relates to a wireless three-phase fan filter unit control device that controls a function and senses overcurrent and overheating to shut down a motor.

In general, clean room air conditioning FFU is a device used to secure a clean space, such as semiconductor manufacturing equipment, LCD manufacturing equipment, or nano processing equipment. It was to monitor the operation status of the FFU and to control the fan motor with an appropriate rotational speed pattern. .

The conventional clean room air conditioning FFU is configured to filter fine dust as the air in the clean room passes through the air outlet at the opposite lower side by the FFU installed on one side, and the outside of the clean room is circulated through the FFU again through the air circulation passage. have.

In addition, the FFU may be disturbed by the flow of air depending on the position of the air resistance device and the operator in the clean room, and vortices may occur, resulting in a decrease in air purification efficiency. It was supposed to be controlled differently.

In addition, if any one of many FFUs breaks unexpectedly, it may adversely affect the cleanliness of the clean room, so the main computer is supposed to monitor whether each FFU is operating normally by periodic communication with the FFU. .

However, such a conventional clean room air conditioner FFU has difficulty in the construction and management of communication wiring since it relies on wired communication to transmit control signals or fan filter status signals for controlling each fan filter. There was this. In particular, the distance from the main computer to many filters ranges from a few kilometers to a few tens of meters, so that a repeater for signal amplification is placed in the middle of the communication line to maintain the proper level of the communication signal. There was a problem.

An object of the present invention for solving the above-described problems, wireless three-phase receiving a three-phase AC power, controlling the ON / OFF function of the FFU by a wireless command packet, and detects overcurrent and overheating to shut off the motor operation It is to provide a fan filter unit control device.

The wireless three-phase FFU control device of the present invention for achieving the above object, the DC power supply for converting the AC voltage applied from the AC power supply to DC, the AC power is supplied to the motor operation control signal to the electric motor The power control unit, the wireless communication unit for transmitting the operation control signal of the motor in a wireless command packet and the drive power is supplied through the DC power supply, and the motor operation control signal transmitted through the wireless communication unit to the power control unit to the It provides a wireless three-phase fan filter unit controller including a control unit for controlling the operation of the motor.

The control unit may further be connected to an overcurrent detector for detecting whether the overcurrent is applied to the motor.

The control unit may further be connected to an overheat detecting unit for detecting an overheating state of the electric motor.

The control unit may further be connected to an alarm output unit for notifying an alarm signal to the outside when a detection signal is detected from the overcurrent detection unit or the overheat detection unit.

The control unit may further be connected to a storage unit for storing the operation control data of the electric motor.

The controller may restart the motor according to the motor operation control data stored in the storage unit when the motor is stopped due to a power failure and then restarted.

The controller may allow the motors to be sequentially operated when a plurality of motors are restarted at the same time.

The controller may be configured in a one-to-one manner with the electric motor.

As described above, according to the present invention, a wireless three-phase fan filter unit control device which receives a three-phase AC power and controls the ON / OFF function of the FFU by a wireless command packet, senses overcurrent and overheating, and shuts off the motor. Can provide.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention.

1 is a block diagram showing a wireless three-phase FFU control apparatus according to the present invention, Figure 2 is a detailed circuit diagram showing a wireless three-phase FFU control apparatus according to the present invention.

The wireless three-phase FFU control device according to the present invention, as shown in Figure 1, from the AC power supply unit 10, AC power supply unit 10 is applied an AC voltage of R, S, T three-phase 200 volts to 250 volts DC power supply unit 100 converts the applied AC voltage into DC and supplies the AC power supply unit 500 which receives the AC power and applies the motor operation control signal to the U, V, W three-phase induction motor 600, and wireless. The wireless communication unit 900 outputs an operation control signal of the motor 600 as a command packet, the overcurrent sensing unit 200 for detecting whether the overcurrent is applied to the motor 600, and the motor 600 according to the operation of the motor 600. By receiving the driving power through the overheat detection unit 700 and the DC power supply unit 100 to detect the overheating state of the), and transmits the motor operation control signal received through the wireless communication unit 900 to the power control unit 500 Control the operation of the motor 600, over current sense When the detection signal is input from 200 or overheat detection unit 700 is provided with a control unit 300 for outputting an alarm signal.

And, according to an additional aspect of the present invention receives the alarm signal output from the control unit 300, the alarm output unit 800 for notifying to the outside and the fuse 20 to protect the motor 600 due to overcurrent, a predetermined electric motor It further includes a storage unit 400 for storing the operation control data of (600).

The DC power supply unit 100 uses a switching mode power supply (SMPS), and removes noise from an AC input voltage applied from the AC power supply unit 10 using a noise filter (not shown), and then, the control unit. It converts the direct current necessary to drive 300 and supplies it to the control unit 300.

The storage unit 400 stores operation control data of the motor 600, such as preset operation speed data of the motor and current values of a steady state. In addition, the storage unit 400 may use a nonvolatile memory device, for example, a flash memory or an electrically erasable programmable read-only memory (EEPROM). When the motor 600 is stopped due to a power failure by using such a nonvolatile memory, the motor 600 control data such as the operating speed data of the motor 600 which is preset and stored or a current value in a steady state is interrupted. Can be prevented from being lost.

The wireless communication unit 900 may control the ON / OFF control signal according to the operation of the motor 600, the reset control signal of the motor 600, and the speed control (for example, weak, medium, or heavy) control signal of the motor 600. Various control signals such as the wireless transmission to the control unit 300, the control unit 300 controls the operation of the motor 600 in accordance with the operation control signal of the electric motor 600 input from the wireless communication unit 900.

Therefore, the wireless three-phase FFU control device according to the present invention can remotely control the operating state of the fan filter unit (FFU). In addition, the wireless communication unit 900 preferably communicates using a Zigbee wireless communication method, and the distance of the wireless communication is a radius of 50 ~ 60 meters.

As shown in FIG. 2, the power supply control unit 500 is configured using a triac element, and the control unit 300 receives an electric motor 600 operation control signal through the wireless communication unit 900. When the operation control signal of the motor 600 is transmitted, such as turning on / off the operation of the operation 600 or adjusting the operation speed of the motor 600, the operation of the motor 600 is controlled by receiving the operation control signal of the motor 600. do.

The control unit 600 configured by using the microcomputer receives the operation control signal of the electric motor 600 input through the wireless communication unit 900, the operation speed data of the electric motor 600 preset and stored in the storage unit 400, The motor 600 is controlled by using the motor 600 control data such as a current value in a steady state.

In this case, the controller 600 is preferably configured in a one-to-one manner with the electric motor 600. That is, one control unit 600 is configured to control only one electric motor 600.

In addition, the control unit 300 stops the motor 600 due to a power failure, and when the motor 600 is restarted by power recovery, data related to the operation of the motor 600 immediately before the power failure stored in the storage unit 400, for example, It is initialized to the operating speed data of the motor, the current value of the steady state to control the motor 600 to restart.

At this time, the motor reset control signal is transmitted to the controller 300 through the wireless communication unit 900 so that the motor 600 can be restarted according to the set control data.

Therefore, when the motor 600 is stopped and restarted due to an accident such as a power failure, the operation state of the motor 600 before the power failure is transmitted by transmitting a reset control signal through the wireless communication unit 900 to the controller 300. That is, the operating speed (for example, weak, medium, steel, etc.) of the electric motor 600 before a power failure can be easily maintained.

In this case, when the plurality of motors 600 are restarted at the same time, the breaker may be operated due to overload, so that the motors 600 are sequentially operated (for example, about 5 seconds apart). Therefore, even if several electric motors 600 are operated at the same time, it is possible to prevent the breaker from operating because the motor 600 is restarted in order by setting the order.

The overcurrent detecting unit 200 is for detecting whether the overcurrent is applied to the motor 600. As shown in FIG. 2, the overcurrent detecting unit 200 is configured using an OP-AMP circuit, and the T phase of the three phases of the AC power supply unit 10 is used. The current supplied to the motor 600 is detected by measuring the voltage across the connected resistor.

The voltage across the measured resistance is converted into a DC voltage through an OP-AMP amplifier and a smoothing circuit, and the converted DC voltage is digitized by the controller 300.

Therefore, the controller 300 compares the current data detected by the overcurrent detector 200 with the current data in the normal state which is preset and stored in the storage 400. If the current data detected by the overcurrent detecting unit 200 is larger than the current data in the normal state, it is determined that the overcurrent is detected and the operation of the motor 600 is stopped by transmitting the motor 600 OFF control signal to the power control unit 500. .

For example, when the current data in the normal operating state is 0x90 to 0x110, if the current data sensed by the overcurrent detecting unit 200 is 0x200 or more and the duration is 20ms or more, the motor 600 is stopped by determining that it is an overcurrent. It is to let.

Here, since the motor 600 is stopped when the overcurrent duration is 20 ms or more, it is possible to prevent the motor 600 from being stopped even if an instantaneous overcurrent occurs due to an abnormal power supply.

Therefore, the controller 300 controls the motor 600 according to the detection signal input from the overcurrent detection unit 200 to stop the operation of the motor 600 only during the overcurrent generation period, the operation is continuously made in the remaining normal state In addition, the fuse 20 may be provided to effectively protect the motor 600 from overcurrent.

When the overcurrent detection signal is detected and the motor 600 is stopped, the controller 300 notifies the outside of the operating state of the motor 600 through the alarm output unit 800.

The alarm output unit 800 may be configured as a display (not shown) such as an LED (Light Emitting Diode) or FND (Flexible Numeric Display) to indicate that an overcurrent has been detected, or may notify that an overcurrent has been detected by an alarm sound. .

In addition, the fuse 20 is used to protect the motor 600, and the fuse 20 is applied to two phases (2-phases) among three phases (3-phases) of the input power source.

In the present invention, the fuse 20 is applied to R, S 2 of the R, S, and T three phases of the input power, and the fuse 20 is a maintenance and parts using a glass fuse and a fuse holder of a general type (20 mm). The supply and demand of the was made smoothly. In addition, the capacity of the fuse 20 may change the capacity of the fuse 20 according to the rated capacity of the motor 600.

The overheat detection unit 700 detects an overheating state of the motor 600 according to the operation of the motor 600, and as shown in FIG. 2, a closed circuit is configured using a photo coupler. The overheat detection unit 700 closes the circuit (switch) when the value detected by the overheat sensor TH is normal, and when the motor 600 detects the overheat state through the overheat sensor TH, the circuit ( Switch) is opened.

When the motor 600 is detected as an overheating state, a signal indicating that overheating is detected is transmitted to the controller 300. Accordingly, when the overheat detection signal is transmitted to the control unit 300, the control unit 300 transmits the OFF control signal of the motor 600 to the power control unit 500 to stop the operation of the motor 600. Stops operation.

When the overheat generation signal according to the operation of the motor 600 is detected and the motor 600 is stopped, the controller 300 notifies the outside of the operation state of the motor 600 through the alarm output unit 800. .

In the wireless three-phase FFU control apparatus according to the present invention configured as described above, when power is supplied through the three-phase AC power source 10, the power is applied to the power control unit 500 through the fuse 20.

In this case, the ON control signal of the motor 600 is transmitted to the control unit 300 through the wireless communication unit 900, and the motor 600 ON control signal is transmitted from the control unit 300 to the power control unit 500. )). The motor 600 may adjust the operating speed of the motor 600 such as weak, medium, and steel through the wireless communication unit 900.

At this time, when the overcurrent is detected by the overcurrent detecting unit 200 while the motor 600 is operating, or when the overheating state of the motor 600 is detected by the overheat detecting unit 700, the controller 300 controls the motor 600 by the power control unit 500. OFF to stop the motor 600 by transmitting a control signal.

In addition, the controller 300 notifies that overheating or overcurrent is detected through the alarm output unit 800.

On the other hand, if a power failure occurs during the operation of the motor 600, the operation of the motor 600 is stopped. When recovery is restored, the motor 600 reset control signal is transmitted to the controller 300 through the wireless communication unit 900. The controller 300 reads the motor 600 operation control data, which is set and stored in the storage unit 400, and restarts the motor 600.

In the above description, the present invention has been described with reference to preferred embodiments, but the present invention is not necessarily limited thereto, and a person having ordinary skill in the art to which the present invention pertains does not depart from the technical spirit of the present invention. It will be readily appreciated that various substitutions, modifications and variations are possible.

1 is a block diagram showing a wireless three-phase FFU control apparatus according to the present invention,

Figure 2 is a detailed circuit diagram showing a wireless three-phase FFU control device according to the present invention.

<Explanation of symbols for main parts of the drawings>

10: three-phase AC power supply 100: DC power supply

300: control unit 500: power control unit

600: motor 900: wireless communication unit

Claims (8)

A DC power supply unit for converting and supplying an AC voltage applied from an AC power source to DC; A power control unit receiving the AC power and applying a motor operation control signal to the motor; A wireless communication unit which transmits an operation control signal of the motor in a wireless command packet; And A control unit receives driving power through the DC power supply unit, and transmits a motor operation control signal transmitted through the wireless communication unit to the power control unit to control the operation of the motor. Wireless three-phase fan filter unit control device comprising a. The method of claim 1, wherein the control unit, Wireless over-phase fan filter unit control device characterized in that the over-current detection unit for detecting whether the over-current is applied to the motor is further connected. The method of claim 1, wherein the control unit, Wireless three-phase fan filter unit control device, characterized in that the overheat detection unit for detecting the overheating state of the motor is further connected. The method according to claim 2 or 3, wherein the control unit, The wireless three-phase fan filter unit control device, characterized in that the alarm output unit for further notifying the alarm signal to the outside when the detection signal is detected from the overcurrent detection unit or the overheat detection unit. The method of claim 1, wherein the control unit, Wireless three-phase fan filter unit control device characterized in that the storage unit for storing the operation control data of the motor is further connected. The method of claim 5, wherein the control unit, The wireless three-phase fan filter unit control device, characterized in that for restarting the motor by stopping the motor due to a power failure and restarting the motor according to the motor operation control data stored in the storage unit. The method of claim 6, wherein the control unit, Wireless three-phase fan filter unit control device characterized in that the motor is sequentially operated when a plurality of motors are restarted at the same time. The method of claim 1, wherein the control unit, Wireless three-phase fan filter unit control device, characterized in that configured in one-to-one manner with the electric motor.
KR1020070102070A 2007-10-10 2007-10-10 Wireless 3-phase ffu control equipments KR20090036805A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070102070A KR20090036805A (en) 2007-10-10 2007-10-10 Wireless 3-phase ffu control equipments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070102070A KR20090036805A (en) 2007-10-10 2007-10-10 Wireless 3-phase ffu control equipments

Publications (1)

Publication Number Publication Date
KR20090036805A true KR20090036805A (en) 2009-04-15

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KR1020070102070A KR20090036805A (en) 2007-10-10 2007-10-10 Wireless 3-phase ffu control equipments

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102527170A (en) * 2012-01-11 2012-07-04 苏州市职业大学 Fan filter unit (FFU) group control system based on wireless and electric wire carrier communication technology
KR20240101277A (en) 2022-12-23 2024-07-02 주식회사 동양기술 Cleaning system including fan filter unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102527170A (en) * 2012-01-11 2012-07-04 苏州市职业大学 Fan filter unit (FFU) group control system based on wireless and electric wire carrier communication technology
KR20240101277A (en) 2022-12-23 2024-07-02 주식회사 동양기술 Cleaning system including fan filter unit

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