KR100449123B1 - The fan filter unit control system of BLDC motor for extreme cleanness and method thereof and the management system manageability a fan filter unit control system using network - Google Patents

Abstract

The present invention relates to a BDC motor-driven fan filter unit control system and control method and a management system for managing the BLC motor-driven fan filter unit control system using a network for high cleanness. The present invention provides a control system for controlling a three-phase BLDC motor used to maintain a clean state in a clean room, and provides a low power factor, increase in current THD, and speed generated in a control system of a fan filter unit for a conventional single-phase AC induction motor. The present invention relates to a BCD motor-driven fan filter unit control system capable of improving control problems such as responsiveness, poor controllability, and control of a control system even at a remote location, and a management system for managing the control system.

The BLC motor-driven fan filter unit control system of the present invention rectifies AC power to DC power, corrects the power factor of the rectified DC power, and is controlled to be boosted to a constant voltage. A voltage supply stage 101 for outputting a driving voltage, a driving voltage of a three-phase BLDC motor, and a driving voltage of the control stage 104, and a three-phase inverter to which six switches are connected, and at the voltage supply stage 101 A BLDC driver stage 102 for receiving the driving voltage of the BLDC driver and the driving voltage of the three-phase BLDC motor, respectively, and outputting the driving voltage of the three-phase BLDC motor constantly according to the input driving voltage of the BLDC driver; Receives the driving voltage of the three-phase BLDC motor that is constantly output from the BLDC driver stage 102, and drives the three-phase BLDC motor, the rotational speed (RPM) of the three-phase BLDC motor actually rotated by the Hall sensor 3-phase BLDC motor The BLDC motor stage 103 generates an alarm signal and outputs an alarm signal when an actual speed signal is detected and an abnormality such as a short circuit or a disconnection occurs in the hall sensor. When the driving voltage is input and driven by the input driving voltage, when the actual speed signal and the alarm signal of the three-phase BLDC motor are received at the BLDC motor stage 103, the driving voltage is input and the actual voltage of the three-phase BLDC motor is input. Comparing and analyzing the speed signal and the reference speed signal of the BLDC motor to generate a three-phase PWM switching pattern signal when it is not driven at a constant speed under a certain load, the three-phase BLDC motor 103 input to the BLDC motor stage 103. And a control stage 104 for controlling the driving voltage of the three phase BLDC motor supplied to the BLDC motor stage 103 by an alarm signal, and controlling the driving voltage thereof to be adjusted. Control method for controlling the Provide a management system that manages the control system.

Description

BLC motor driven fan filter unit control system for high cleanness and management system that manages the BLC motor driven fan filter unit control system using control method and network {The fan filter unit control system of BLDC motor for extreme cleanness and method according and the management system manageability a fan filter unit control system using network}

The present invention relates to a BCD motor-driven fan filter unit control system and control method for high cleanness, and a management system for managing the BCD motor-driven fan filter unit control system using a network, and more specifically, to a clean room. By providing a control system for controlling a three-phase BLDC motor used to maintain a clean state inside, low power factor, increase in current THD, speed response and the like generated in the control system of a fan filter unit for a conventional single-phase AC induction motor, The present invention relates to a BLC motor-driven fan filter unit control system that enables control of a control system even at a remote location and to improve problems such as deterioration of controllability and a management system for managing the control system.

The Fan Filter Unit Control System is a dedicated control system of the fan filter unit for maintaining clean conditions in the clean room. Effective fan filter unit control and monitoring, stand-alone and various protection circuit functions. It is a device that needs to secure the stability of the system.

In the conventional control system of the fan filter unit, a single-phase AC induction motor with a linear power supply is adopted, and the on / off control using a relay contact is used to control the wind speed in the clean room constantly. However, the low power factor, the current THD increase, and the speed responsiveness and controllability of the motor generated during use have significantly decreased, causing malfunctions frequently. This is also a problem that often occurs when operating an AC induction motor.

The present invention is to solve the problems of the prior art, the object of the present invention is a linear of the control system of the conventional single-phase AC induction motor fan filter unit used in the control system of the fan filter unit for maintaining a clean state in the clean room. The present invention provides a BCD motor-driven fan filter unit control system and control method which can improve problems such as low power factor, increase in current THD, speed response, and controllability generated in a power supply.

Another object of the present invention is to drive a BCD motor-driven fan filter unit control system, wherein the BCD motor-driven fan filter unit control system can be divided into groups in remote locations and the group can be requested by one command request through a network. A management system that manages the BLC motor-driven fan filter unit control system that enables the operation / stop control of a number of control systems belonging to the control system, speed control of a three-phase BLDC motor, schedule control and monitoring (monitoring) for each period. To provide.

The BCD motor driven fan filter unit control system of the present invention for achieving the above object is rectified by the AC power supply to the DC power supply, the power factor correction of the rectified DC power supply and controlled to be stepped up to a constant voltage by the boosted high voltage The voltage supply stage 101 outputs the driving voltage of the three-phase BLDC driver, the driving voltage of the three-phase BLDC motor, and the driving voltage of the control stage 104, and a three-phase inverter connected to six switches. The BLDC driver receives the driving voltage of the BLDC driver and the driving voltage of the three-phase BLDC motor at the supply terminal 101 and outputs the driving voltage of the three-phase BLDC motor constantly according to the input driving voltage of the BLDC driver. A three-phase BLDC motor that receives the driving voltage of the three-phase BLDC motor constantly output from the stage 102 and the BLDC driver stage 102, drives the three-phase BLDC motor, and is actually rotated by a hall sensor. Detects the actual speed signal of a three-phase BLDC motor, which is the number of revolutions (RPM), and detects short circuit, disconnection and three phase short circuit, disconnection and short circuit, short circuit and short circuit of BLDC motor, and short circuit detection. When an abnormality occurs, the BLDC motor stage 103 generates and outputs an alarm signal, and the driving voltage of the control terminal 104 is input from the voltage supply terminal 101 and driven by the input driving voltage. When the BLDC motor stage 103 has an actual speed signal and an alarm signal of a three-phase BLDC motor, the input is received, and the input and output speeds of the three-phase BLDC motor are compared with the reference speed signal of the BLDC motor. When not driven at a constant speed under load, a three-phase PWM switching pattern signal is generated to control the driving voltage of the three-phase BLDC motor 103 input to the BLDC motor stage 103 to be adjusted, and also by an alarm signal. Of the three-phase BLDC motor supplied to the BLDC motor stage 103 And a control stage 104 for controlling the driving voltage to be cut off.

In addition, the voltage supply terminal 101 receives a noise filter unit 10 for removing noise components of an AC power source, and an AC power source from which the noise component is removed from the noise filter unit 10, and inputs the AC power source. The rectifier to rectify the DC power supply, and the DC rectifier 20 receives the DC power from the bridge rectifier 20, and generates a feedback voltage value by the input DC power and boosts the DC power to the input to boost the output voltage. Feedback signal output unit 34 for detecting and outputting a feedback signal composed of the current value I _AC and the current effective value C _AI input through the resistor R _AC of the inductor 31 and the bridge rectifier 20. ), The power factor is corrected by controlling the abnormality between the input current and the input voltage (220V) in phase with the pulse width modulation signal, and boosting the input voltage to a constant high voltage for driving a three-phase BLDC motor. Power element 32, A voltage boosting unit 30 comprising a snubber circuit 33 connected to the power device 32 and blocking the voltage peak present at the high voltage boosted by the power device 32, and from the voltage boosting unit 30. Receiving a feedback voltage and a feedback signal, multiplying the feedback voltage and the feedback signal input by the multiplier to generate a pulse width modulated signal for controlling the power factor correction and the input voltage to be raised to a constant high voltage, and outputting the pulse width modulated signal to the power device 32. A current controller 40; The top switch 51 receives the high voltage boosted from the power device 32 and outputs the driving voltage of the control terminal 104 and the driving voltage of the BLDC driver terminal 102 using the input high voltage. And an output stage 53 composed of the transformer 52, a transformer T2, a capacitor, a diode, and a coupler 53a.

In addition, the BCD motor-driven fan filter unit control system is a step of supplying AC power for driving and control of the BLDC motor (S100), and receives the AC power supplied from the noise filter unit 10, the input AC Removing the noise of the power supply (S110), the bridge rectifier 20 receives the AC power from which the noise is removed from the noise filter unit 10, and rectifying the input AC power to the DC power (S120) And receiving the rectified DC power from the DC link capacitance C1 through the boost inductor 31 and precharging the DC power to generate a feedback voltage (S130). In step 34, a feedback signal consisting of the current value I _AC and the current effective value C _AI input through the resistance R _AC of the bridge rectifying unit 20 is detected (S140), and the current control unit 40 DC link capacity (C1) Or receiving the feedback voltage generated by the boost inductor 31 and the feedback signal detected by the feedback signal detector 34, and multiplying the input feedback voltage and the feedback signal to generate a pulse width modulated signal (S150). And a pulse width modulated signal from the current control unit 40 at the power device 32, and a predetermined voltage 220V is controlled by the input pulse width modulated signal to a high voltage to operate the BLDC motor. Step of step-up (S160), the switching mode power supply unit 50 receives the high voltage boosted by the power device 32, the drive voltage of the control terminal 104 and the drive voltage of the BLDC driver by the input high voltage Respectively generating the high voltage generated by the power device 32 and the switching mode power supply unit 50, the driving voltage of the control terminal 104, and the driving voltage of the BLDC driver. Driven and first Performing step (S180), checking whether the power of the control system 100 is on / off (S190), and when the power of the control system 100 is on, the boost inductor 31 generates a feedback voltage. In step S200, the process returns to step S140, and when the power of the control system is turned off, the control is terminated.

Here, step S160 of stepping up to a high voltage by controlling the predetermined voltage 220V further includes blocking step S165 of the high voltage boosted by the snubber circuit 33 (S165).

In addition, the BCD motor-driven fan filter unit control system of the present invention includes a serial communication port unit, corrects the power factor of the DC power supply using a pulse width modulated signal, and is a three-phase BLDC motor by a high voltage stepped up to a constant voltage If the actual speed signal and abnormal symptoms of the three-phase BLDC motor generated by the drive occurs, an alarm signal is generated, and the actual speed signal of the three-phase BLDC motor and the reference speed signal of the BLDC motor are compared and analyzed. One or more controls to generate a three-phase PWM switching pattern signal to control the speed of the BLDC motor and to cut off the driving voltage of the three-phase BLDC motor by the alarm signal. A seal of a three-phase BLDC motor transmitted from a serial communication port of the group-specific control system A in which the system 100 is organized into groups, and the group-specific control system A. When the speed signal and the alarm signal are input, the driving and stop of the individual control system 100 are controlled, and when a monitoring command is requested, the actual speed signal and the alarm signal of the three-phase BLDC motor are displayed in text, graphic or Outputs a combination of these, and when the speed control command of the three-phase BLDC motor of the control system 100 is requested, generates a reference speed signal of the three-phase BLDC motor for controlling the speed adjustment and transmits it to the corresponding control system 100. One or more management systems 200 to enable control by transmitting a schedule control request signal to the corresponding control system when a request is made for a schedule control command to enable control, and to separate the data at regular intervals to enable the speed control of the control system. ), And the management system 200 and the wireless communication network connected to the monitoring command request, or speed control name of the control system 100 Including a wireless terminal (300) consisting of a laptop equipped with a wireless LAN card that enables monitoring and speed adjustment of a three-phase BLDC motor driven by requesting, a cellular phone capable of servicing IMT-2000, a PCS phone, or a PDA It is managed by a management system that is configured.

Here, the management system 200, the management system 200, the data input unit 201 is input to the monitoring command, the speed control command of the three-phase BLDC motor driven by the control system, or the schedule control command using the keyboard. And a serial communication port unit 202, which is an interface for receiving actual speed signals and alarm signals of a three-phase BLDC motor transmitted from the control system 100, and a three-phase BLDC input to the serial communication port unit 202. The actual speed signal and the alarm signal of the motor are stored, and the memory unit 203, which stores a control program that enables direct control of the control system using the stored data, and the driving process of the control system by monitoring request. The display unit 204 and the data input unit 201 output the actual speed signal and the alarm signal of the 3-phase BLDC motor to be displayed in text, graphics, or a combination thereof. Monitoring command signal, reference speed signal of the three-phase BLDC motor controlling the driving of the three-phase BLDC motor of the control system, or schedule control command signal and the actual speed of the control program stored in the memory unit 203 and the three-phase BLDC motor. The reference speed signal of the three-phase BLDC motor controlling the speed of the three-phase BLDC motor of the control system and processing the text, graphics, or a combination thereof to enable reading using the signal and the alarm signal may be used. Control to be transmitted to the control system through 202, and to transmit to the control system through the serial communication port unit 202 a signal enabling control by a predetermined period of the control system by a schedule control command signal. It is comprised including the CPU part 205 to control.

1 is a block diagram of a BCD motor driven fan filter unit control system according to the present invention;

FIG. 2 is a block circuit diagram of a voltage supply terminal of one component of FIG. 1;

3 is a waveform diagram according to the on / off operation state of the top switch,

4 is a perspective view of an installation state of a high temperature device disposed on a heat sink;

5 is a flowchart showing a control method of a control system of a three-phase BLDC motor;

6 is a feedback voltage circuit diagram for generating a feedback voltage value;

7 is a feedback current circuit diagram for controlling a current;

8 is a circuit diagram showing in detail the current control unit;

9A and 9B are detailed circuit diagrams of an embodiment according to the present invention;

10 is a block diagram illustrating a management system for configuring and managing a plurality of control systems in groups;

FIG. 11 is a detailed block diagram of a management system that is one component of FIG. 10.

<Explanation of symbols for the main parts of the drawings>

10: noise filter unit 20: bridge rectifying unit

30: voltage boosting unit 31: boost inductor

32: power element 33: snubber circuit

34: feedback signal output unit 40: current control unit

50: switching mode power supply 51: top switch

52: Trankiller 53: Output stage

53a: coupler 100: control system

101: voltage supply terminal 102: BLDC driver stage

103: BLDC motor stage 104: control stage

200: management system 201: data input unit

202: serial communication port section 203: memory section

204: display unit 205: CPU unit

300: wireless terminal

Hereinafter, a power supply device of a fan filter unit control system of the present invention will be described in detail with reference to the accompanying drawings.

The brushless direct current (BLDC) motor driven fan filter unit control system for high cleanness of the present invention is a low power factor, an increase in current THD, and a speed generated in a control system of a fan filter unit for a conventional single-phase AC induction motor. It is a control system including a switch mode power supply (SMPS) and a circuit configured to correct power factors, such as responsiveness and controllability.

It also provides a management system capable of constructing a plurality of BCD motor-driven fan filter unit control systems by group to perform control commands and status monitoring via a network at a remote location.

1 is a schematic block diagram of a BCD motor driven fan filter unit control system according to the present invention.

As shown in Fig. 1, the AC power is rectified to a DC power supply, the drive voltage of the three-phase BLDC driver is controlled by the power factor correction of the rectified DC power supply, and the voltage is increased to a constant voltage. The voltage supply stage 101 outputs the driving voltage of the motor and the driving voltage of the control stage 104 and a three-phase inverter connected to six switches, and the driving voltage of the BLDC driver in the voltage supply stage 101. And a BLDC driver stage 102 for receiving the driving voltages of the three-phase BLDC motors and outputting the driving voltages of the input three-phase BLDC motors constantly according to the input driving voltages of the BLDC drivers. Three-phase BLDC which is the rotation speed (RPM) of the three-phase BLDC motor which is driven by the Hall sensor and receives the driving voltage of the three-phase BLDC motor that is constantly output from the driver stage 102. The actual speed signal of the motor BLDC motor stage 103 which generates and outputs an alarm signal when an abnormality such as short circuit of hall sensor, short circuit of hall sensor, short circuit of phase (three phases) of BLDC motor, disconnection and short circuit detection, power failure detection, and the like, The voltage supply stage 101 receives the driving voltage of the control stage 104, is driven by the input driving voltage, the BLDC motor stage 103 may be the actual speed signal and the alarm signal of the three-phase BLDC motor In this case, the inputted and compared the actual speed signal of the three-phase BLDC motor and the reference speed signal of the BLDC motor, and when the drive is not driven at a constant speed at a certain load, generates a three-phase PWM switching pattern signal to the BLDC motor Control so that the driving voltage of the three-phase BLDC motor 103 input to the stage 103 is adjusted, and also to block the driving voltage of the three-phase BLDC motor supplied to the BLDC motor stage 103 by the alarm signal. Control system 10 consisting of control stage 104 0).

The reference speed signal of the three-phase BLDC motor is input by the system administrator and is periodically downloaded to the control system 100 by the management system (described in FIG. 10 below).

The three-phase PWM switching pattern signal generated by the control stage 104 is an actual speed signal of a PLDC motor indicating an actual speed value fed back from the BLDC motor stage 103 by a PI controller (not shown) included in the control stage 104. And the duty cycle of the pulse width modulation signal is determined by compensating for the speed difference between the reference speed signal of the BLDC motor, thereby controlling the motor rotation speed of the driven three-phase BLDC motor at a desired speed.

In addition, the control unit 104 further includes a serial communication port unit (not shown) to enable data transmission of an actual speed signal and an alarm signal of the BLDC motor to a higher system (management system) through a network.

FIG. 2 is a detailed block circuit diagram of a voltage supply terminal of one component of FIG. 1.

As shown in FIG. 2, the voltage supply terminal 101 receives a noise filter unit 10 for removing noise components of an AC power source and an AC power source from which the noise component is removed from the noise filter unit 10. A bridge rectifier 20 for rectifying the input AC power into a DC power source; and receiving DC power from the bridge rectifier 20; generating V _SENSE (hereinafter referred to as a feedback voltage) value by the input DC power; A feedback inductor 31 configured to boost the input DC power to a high voltage and output the boosted inductor 31, and a current value I _AC and a current effective value C _AI input through the resistor R _AC of the bridge rectifier 20. The feedback signal output unit 34 which detects and outputs a signal, and controls the power factor by controlling the abnormality of the input current and the input voltage 220V in phase with the pulse width modulation signal, and corrects the power factor. Constant input voltage Voltage boosting consisting of a power device 32 boosting to a high voltage (DC 380V), a snubber circuit 33 connected to the power device 32 to block the voltage peak present at the high voltage boosted by the power device 32. The unit 30 receives the feedback voltage and the feedback signal from the voltage boosting unit 30, multiplies the feedback voltage and the feedback signal input from the multiplier (not shown) so that the power factor correction and the input voltage are boosted to a constant high voltage. A current controller 40 generating a pulse width modulated signal to be controlled and outputting the pulse width modulated signal to the power device 32; The top switch 51 receives the high voltage boosted from the power device 32 (direct current 380 V) and outputs the drive voltage of the control terminal 104 and the drive voltage of the BLDC driver using the input high voltage. And a switching mode power supply unit 50 including an output stage 53 including a transformer 52, a transformer T2, a capacitor, a diode, and a coupler 53a.

The noise filter unit 10 is for removing a noise (noise) component of the electrical signal included in the AC power (in the present invention, single-phase 220V) input through the input terminal.

The bridge rectifying unit 20 which receives the AC power from which the noise component is removed and rectifies the DC power may be configured by using a plurality of diodes or by using another type of rectifying device (for example, an IC packaged rectifying device). It may be.

It is apparent that the high voltage boosted by the voltage boosting unit 30 can be changed according to a system requiring a high voltage of about 300 to 500 V applied to the control system 100 of the present invention.

The boost inductor 31 is an element for boosting the input DC voltage to a high voltage, and the power element 32 is also used for voltage amplification as a power amplifier. At this time, the snubber circuit 33 connected to the power device 32 in order to block the voltage peak (high frequency) to be switched when the voltage is boosted from the power device 32 to a high voltage is optimized RC value (47 ㏀, Is used to block the switched voltage peak of the power device 32.

The value of the DC voltage (VDC + -VDC-) output from the output terminal of the power element 32 is a high voltage of 380V / 1A. The power device 32 may be configured by using a power device such as IPFP450 (product name) or may use another power device.

The current value I _AC and the current effective value C _AI , which are the feedback signals output from the feedback signal output unit 34, are input to the current controller 40, and among the input values, the current value I _AC is first. The multiplier is input and multiplied by a multiplier provided in the current control unit 40. Thereafter, the feedback voltage is multiplied with the current effective value C _AI to generate a pulse width modulation (PWM) signal indicating a current command value which is a reference value for controlling the output voltage value.

The pulse width modulated signal is a waveform of a pulse width modulation (PWM) method that adjusts the pulse width as a pulse wave, thereby correcting the power factor by controlling the phase of the input current and the input voltage of the power device 32 in phase. Further, when the voltage is boosted to a high voltage regardless of the input voltage (for example, 220V to 240V), the voltage is controlled to be boosted to a constant voltage. Therefore, the DC voltage output from the voltage boosting unit 30 maintains a constant magnitude.

The current controller 40 may be configured using, for example, a power factor pre-regulator such as UC3854 (product name) or UCC3818 (product name).

The DC voltage output from the voltage boosting unit 30 is input to the switching mode power supply unit 50. The switching mode power supply unit 50 is a switching mode power supply (SMPS), a top switch 51, a transformer killer 52, a coupler (53a), a diode (D3) and a capacitor (C2) , Transformer T2 and the like. The transformer (T2) is used for energy storage, separation from the output, and output power conversion.

The operation of the top switch 51 will be described with reference to the signal waveform diagram of FIG. 3.

The switching mode power supply unit 50 shown in FIG. 2 is a flyback type switching mode power supply configured using the top switch 51. The switching mode power supply of the flyback type has a small number of parts and a wide voltage. It features an input range, typical feedback voltage detection, one or more voltage output capabilities, an output voltage higher or lower than the input voltage, plus or minus voltage.

First, when the top switch 51 is turned on, the diode D3 is reverse biased and the current on the primary side of the transformer T2 is increased. Since the transformer T2 is separated from the output load from the reverse biased diode D3, energy is supplied to the load resistor R _L from the output capacitor C2 while the top switch 51 is turned on.

In addition, when the top switch 51 is turned off, the magnetic flux remaining in the core of the transformer T2 starts to attenuate and the secondary pole is reversed. Accordingly, the diode D3 is turned on and the energy stored when the top switch 51 is turned on is transferred to the load circuit.

Section (1) shown in FIG. 3 is generated when the top switch 51 is turned on. The current I_PRI increases linearly on the primary side. In section (1), V _{DS (ON), which} is the drain-source voltage flowing through the top switch 51 _, becomes almost zero. The output diode D3 blocks the current flowing to the secondary side by the point electrode of the transformer T2. Therefore, the current applied to the load resistor R _L is supplied by the capacitor C2.

Section (2) is a section generated when the top switch 51 is turned off, and the energy stored in the magnetic flux of the transformer T2 is transferred from the primary side to the secondary side.

In the section (3), no current flows to the primary side and the secondary side of the transformer T2.

The top switch 51 is a device capable of performing all functions used in an offline switch mode control system despite a simple structure having three pins. High Voltage N-Channel Power MOSFET with Turn-On Gate Driver, Voltage-Mode PWM Controller with 100KHz Oscillator, High-Voltage Startup Bias Circuit, Bandgap Derived Reference, Loop Compensation and Bias for Error Compensation It is equipped with functions such as a shunt regulator / error amplifier, and the use of the top switch 51 has advantages such as cost reduction and reduction in the number of parts, size and weight of the BLC motor-driven fan filter unit control system. . It also improves efficiency and system stability.

Table 1 compares the power factor of the switching mode power supply (switching mode power supply unit 50) that is one component of the present invention and the conventional linear power supply.

Linear Power Supply Switching Mode Power Supply 1200 rpm 0.654 0.997

As shown, it can be seen that the power factor according to the present invention at 1200rpm is significantly higher than the power factor of the linear power supply (acquired CE certification of the Noise Research Institute).

4 illustrates a structure for heat dissipation of devices generating high heat in the power supply device of the present invention. The rectifier diode D10XB60 used as the power device 32 and the bridge rectifier 20 and the boost diode FES8JT are shown in FIG. OR D8L60) is designed to have a straight structure for heat dissipation to achieve maximum heat dissipation effect and to minimize size. The heat sink can be configured using a metal plate such as aluminum commonly used.

5 is a flowchart illustrating a control method of a control system of a three-phase BLDC motor according to the present invention.

As shown in FIG. 5, supplying AC power for driving and controlling a three-phase BLDC motor (S100), receiving AC power supplied from the noise filter unit 10, and noise of the input AC power. Removing the step (S110), the bridge rectifier 20 receives the AC power from which the noise is removed from the noise filter unit 10, rectifying the input AC power to a DC power (S120), and Receiving the rectified DC power from the DC link capacity C1 through the boost inductor 31 and precharging the input DC power to generate a feedback voltage (S130), and a feedback signal. The detecting unit 34 detects a feedback signal composed of the current value I _AC and the current effective value C _AI input through the resistance R _AC of the bridge rectifying unit 20 (S140), and the current control unit. At 40, the DC link capacity (C1), or boost inductor ( Receiving a feedback voltage generated in step 31 and the feedback signal detected by the feedback signal detector 34, and generating a pulse width modulation (PWM) signal by multiplying the input feedback voltage and the feedback signal (S150); The power device 32 receives the pulse width modulated signal from the current controller 40 and boosts the voltage to a high voltage so as to operate the BLDC motor by controlling the predetermined voltage 220V by the input pulse width modulated signal. In step S160, the switching mode power supply unit 50 receives the high voltage boosted by the power device 32, and drives the driving voltage of the control terminal 104 and the driving voltage of the BLDC driver by the input high voltage, respectively. And generating the high voltage generated by the power device 32 and the switching mode power supply unit 50, the driving voltage of the control terminal 104, and the driving voltage of the BLDC driver to drive the BLDC motor. To perform control (S180), checking whether the power of the control system 100 is on / off (S190), and generating a feedback voltage in the boost inductor 31 when the power of the control system 100 is on (S200). Return to step S140, and ends when the power of the control system is off.

The step S160 of controlling the predetermined voltage 220V to boost the voltage to a high voltage further includes blocking the peak voltage existing at the high voltage boosted by the snubber circuit 33 (S165).

The above steps are described in detail as follows.

In order to drive and control the BLDC motor, the AC power of single-phase 220V is first inputted to the noise filter unit 10 (S100) to remove the noise component of the electrical signal (S110), and the AC power from which the noise component is removed is the bridge rectifier ( 20 is inputted to rectify the DC power (S120).

The rectified DC power is input to the DC link capacity C1 through the boost inductor 31. When the initial power is supplied, the DC power is not stored in the boost inductor 31 so that the V _SENSE value, which is a feedback voltage value, is supplied. Since it is not possible to generate the pre-charged in the DC link capacity (C1) is configured to generate a feedback voltage value (S130).

6 illustrates a feedback voltage circuit diagram for generating a feedback voltage value, and Equation 1 below illustrates generation of a feedback voltage value.

Here, the feedback voltage value V _SENSE controls the feedback voltage circuit to be always 7.5V.

The generated feedback voltage value is inputted to the current controller 40 and stands by, and the feedback signal detector 34 receives the current value I _AC and the current effective value input through the resistance R _AC of the bridge rectifier 20. A feedback signal consisting of C _AI is detected (S140).

The current controller 40 receives the detected feedback signal and multiplies the feedback signal with the standby feedback voltage by a multiplier (not shown). 7 is a feedback current circuit diagram for controlling the current, FIG. 8 is a circuit diagram showing the current control unit in detail, and Equation 2 shows the generation of the R _MO value, which is a multiple output resistance value.

Referring to FIG. 8, when AC power is output from the bridge rectifier 20, a current value I _AC flows through the resistor R _AC . The current value I _AC is a sinusoidal wave, and the magnitude is proportional to the magnitude of the input voltage. The current value I _AC is first multiplied by a multiplier provided in the current control unit 40, and then multiplied again by the feedback voltage and the current effective value C _AI , thereby inputting the input current of the power device 32. The power factor is corrected by controlling the phase of the input voltage and the input voltage in phase, and generates a pulse width modulated signal for controlling the voltage to be increased to a constant voltage when the voltage is boosted to a high voltage (S150).

In addition, the generated multiple output resistance value (R _MO ) shown in Equation 2 is a sensing resistance value for controlling the desired feedback current by detecting the current (feedback current) of the multiplier capable of outputting the maximum.

The generated pulse width modulated signal is input to the power element 32 to correct the power factor by controlling the phase of the input current and the input voltage of the power element 32 in phase, thereby correcting the input voltage 220V. By controlling the voltage to be boosted to a constant voltage when boosting the power, the power device 32 can boost voltage S160 to a constant voltage of DC 380V, which is a high voltage for operating the three-phase BLDC motor.

At this time, a voltage peak that is a high frequency component to be switched is generated at a voltage stepped up to a high voltage of DC 380V, and the snubber circuit 33 cuts the voltage peak switched to the high voltage using the optimized RC value (S165).

The switching mode power supply unit 50 receives the high voltage boosted by the power device 32 and, based on the input high voltage, the driving voltage of the control terminal 104 and the driving voltage of the three-phase BLDC driver, DC 5V and DC 15V. To generate each (S170).

The power device 32 and the switching mode power supply unit 50 output the generated high voltage, the drive voltage of the control terminal, and the drive voltage of the BLDC driver to drive and control the BLDC motor (S180) to drive the BLDC motor. When the power supply of the control system 100 for controlling the fan filter unit is turned off, the control system 100 is stopped. When the power supply of the control system 100 is on, the feedback voltage value is the boost inductor 31. Generated in (S200) is configured to be supplied.

This is because the DC power is stored in the boost inductor 31, and since this period, no feedback voltage value is generated in the DC link capacity C1.

9A and 9B are detailed circuit diagrams of an embodiment according to the present invention. Reference numerals for the main parts represent the same parts as those shown in FIG. 1, and thus detailed descriptions thereof will be omitted. However, the switching mode power supply unit 50 is characterized in that the output terminal is connected to provide a plurality of DC output at the same time.

10 is a block diagram illustrating a management system for configuring and managing a plurality of control systems by group.

As shown in FIG. 10, a serial communication port unit (not shown) is provided, rectifies the AC power to the DC power, controls the power factor correction of the DC power rectified by the pulse width modulation signal, and increases the voltage to a constant voltage. Drive a three-phase BLDC motor, and generate an alarm signal when an actual speed signal and an abnormal symptom of the three-phase BLDC motor are generated when the three-phase BLDC motor is driven, and generate the actual speed signal and the BLDC of the three-phase BLDC motor. When the reference speed signal of the motor is compared and analyzed, when it is not driven at a constant speed under a certain load, a three-phase PWM switching pattern signal is generated to control the speed of the BLDC motor, and the alarm signal is supplied to the BLDC motor stage. Group communication system (A) and at least one control system 100 for controlling the driving voltage of the three-phase BLDC motor is configured as a group, and the serial communication port of the group control system (A) The actual speed signal and the alarm signal of the three-phase BLDC motor transmitted from the unit are controlled to control the driving and stopping of the individual control system 100, and when the monitoring command is requested, the actual of the three-phase BLDC motor to be read. Outputs the speed signal and the alarm signal in text, graphic or a combination thereof, and when a speed control command of the three-phase BLDC motor of the control system 100 is requested, the reference speed signal of the three-phase BLDC motor controlling the speed adjustment is output. When the schedule control command is generated and transmitted to the corresponding control system 100 to enable control, and the control of the speed of the control system is performed by dividing the control system by a certain period, the schedule control request signal is transmitted to the corresponding control system for control. One or more management systems 200 to enable the management system 200 and the wireless communication network is connected to the monitoring of the control system 100 Laptop equipped with wireless LAN card that enables monitoring and speed adjustment of 3-phase BLDC motor driven by requesting terminating command or speed control command, cellular phone, PCS phone with IMT-2000 (International Mobile Telecommunications-2000) service Or, it is configured to include a wireless terminal 300 consisting of a PDA.

The group control system (A) can be divided into small groups in the group again, and can be controlled by assigning a unique ID to each control system.

The schedule control request signal transmitted from the management system 200 to the control system is a semiconductor manufacturing process clean room to which the BLC motor driven fan filter unit control system of the present invention is applied. This is useful when the variable speed control of BLDC motor is needed.

Among the wireless terminal 300, the cellular phone and the PCS phone can control the overall control system 100 even with a short message service (SMS).

FIG. 11 is a detailed block diagram of a management system that is one component of FIG. 10.

As shown in FIG. 11, the management system 200 includes a data input unit 201 that inputs a monitoring command, a speed control command of a three-phase BLDC motor driven by a control system, or a schedule control command using a keyboard. , The serial communication port unit 202, which is an interface for receiving the actual speed signal and the alarm signal of the three-phase BLDC motor transmitted from the control system 100, and the three-phase BLDC motor input to the serial communication port unit 202. The actual speed signal and the alarm signal are stored, and the memory unit 203, which stores a control program for directly controlling the control system using the stored data, and displays the driving process of the control system by monitoring request. The display unit 204 and the data input unit 201 outputting the actual speed signal and the alarm signal of the three-phase BLDC motor to be text, graphics, or a combination thereof. A monitoring command signal, a reference speed signal of a three-phase BLDC motor for controlling driving of a three-phase BLDC motor of the control system, or a schedule control command signal and an actual speed signal of the control program stored in the memory unit 203 and the three-phase BLDC motor. And a reference speed signal of the three-phase BLDC motor for controlling the speed of the three-phase BLDC motor of the control system by processing text, graphics, or a combination thereof to enable reading using the alarm signal. Control to be transmitted to the control system through the control panel, and control to be transmitted to the control system through the serial communication port unit 202 by a schedule control command signal. The CPU unit 205 is configured.

The actual speed signal and the alarm signal of the three-phase BLDC motor input through the serial communication port unit 202 are divided into a group control system A or an individual control system 100. The serial communication port unit 202 uses an RS-485 communication port.

The control program stored in the memory unit 203 is composed of a high level language for easy understanding and reading by the system administrator. The control program is compiled into a machine code that can be read by the CPU unit 205 and executed. It is configured to be.

As described above, according to the present invention, the BCD motor driving improves the problems such as low power factor, increase of current THD, decrease in speed response, and controllability generated in the conventional linear power supply used in the control system of the fan filter unit. Type fan filter unit control system can be provided.

In addition, by separating a plurality of BCD motor-driven fan filter unit control system by group and enabling control through a network, remote control of a plurality of control systems belonging to the groups with a single command request from a remote site is also possible. Run / stop control, 3-phase BLDC motor speed control Schedule control and monitoring can be enabled for each cycle.

Although the invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that modifications and variations can be made within the spirit and scope of the invention, and such variations or modifications will belong to the appended claims. .

Claims (7)

In the BCD motor driven fan filter unit control system, The AC power is rectified to DC power, the power factor correction of the rectified DC power is controlled to increase the voltage to a constant voltage, and the driving voltage of the 3-phase BLDC driver, the driving voltage and the control stage of the 3-phase BLDC motor Outputting the driving voltage of 104), Noise filter unit 10 for removing noise components of the AC power source, A bridge rectifier 20 for receiving an AC power from which noise components are removed from the noise filter unit 10 and rectifying the input AC power to a DC power source; The boost inductor 31 receives the DC power from the bridge rectifier 20, generates a feedback voltage value by the input DC power, and boosts and outputs the input DC power to a high voltage. The resistance of the bridge rectifier 20 is increased. Feedback signal output section 34 for detecting and outputting a feedback signal composed of the current value I _AC and the current effective value C _AI input through R _AC , and the input current and input voltage by the pulse width modulation signal. The power element 32 and the power element 32 which control an abnormality of 220 V in phase and correct the power factor, and boost the input voltage to a constant high voltage for driving a three-phase BLDC motor. A voltage boosting unit 30 connected to the snubber circuit 33 connected to block the voltage peak present at the high voltage boosted by the power device 32; Receiving a feedback voltage and a feedback signal from the voltage boosting unit 30, multiplying the feedback voltage and the feedback signal input from the multiplier to generate a pulse width modulation signal for controlling the power factor correction and the input voltage to be boosted to a constant high voltage; A current controller 40 for outputting to the power device 32; The top switch 51 receives the high voltage boosted from the power device 32 and outputs the driving voltage of the control terminal 104 and the driving voltage of the BLDC driver terminal 102 using the input high voltage. A voltage supply stage 101 including an output stage 53 composed of a transformer 52, a transformer T2, a capacitor, a diode, and a coupler 53a; It is composed of a three-phase inverter connected to six switches, and receives the drive voltage of the BLDC driver, the drive voltage of the three-phase BLDC motor at the voltage supply stage 101, respectively, by the input drive voltage of the BLDC driver BLDC driver stage 102 for constantly outputting the drive voltage of the input three-phase BLDC motor, Receives the driving voltage of the three-phase BLDC motor that is constantly output from the BLDC driver stage 102, and drives the three-phase BLDC motor, the rotational speed (RPM) of the three-phase BLDC motor actually rotated by the Hall sensor Detects the actual speed signal of the 3-phase BLDC motor and generates an alarm signal when an abnormality occurs such as short-circuit, disconnection of the hall sensor, short-circuit of the phase (3-phase) of the BLDC motor, disconnection and short circuit detection, or power failure detection. BLDC motor stage 103 for outputting The voltage supply stage 101 receives the driving voltage of the control stage 104, is driven by the input driving voltage, the BLDC motor stage 103 may be the actual speed signal and the alarm signal of the three-phase BLDC motor In this case, the inputted and compared the actual speed signal of the three-phase BLDC motor and the reference speed signal of the BLDC motor, and when the drive is not driven at a constant speed at a certain load, generates a three-phase PWM switching pattern signal to the BLDC motor Control so that the driving voltage of the three-phase BLDC motor 103 input to the stage 103 is adjusted, and also to block the driving voltage of the three-phase BLDC motor supplied to the BLDC motor stage 103 by the alarm signal. BCD motor driven fan filter unit control system comprising a control stage (104). delete delete In the method of controlling the BLC motor-driven fan filter unit control system, Supplying AC power for driving and controlling the BLDC motor (S100), Receiving the AC power supplied from the noise filter unit 10 and removing noise of the input AC power (S110); Receiving an AC power from which noise is removed from the noise filter unit 10 by the bridge rectifying unit 20, rectifying the input AC power to a DC power source (S120); Receiving the rectified DC power from the DC link capacitance C1 through a boost inductor 31 and precharging the DC power to generate a feedback voltage (S130); Detecting a feedback signal composed of a current value I _AC and a current effective value C _AI input through the resistance R _AC of the bridge rectifying unit 20 by the feedback signal detecting unit 34 (S140); The current controller 40 receives the feedback voltage generated by the DC link capacity C1 or the boost inductor 31 and the feedback signal detected by the feedback signal detector 34, respectively, and inputs the feedback voltage and the feedback. Generating a pulse width modulated signal by multiplying the signal (S150); The power device 32 receives the pulse width modulation signal from the current control unit 40, and boosts the voltage to a high voltage to operate the BLDC motor by controlling the predetermined voltage 220V by the input pulse width modulation signal. Blocking the peak voltage present in the high voltage boosted by the snubber circuit 33 (S160); In step S170, the switching mode power supply unit 50 receives the high voltage boosted by the power device 32 and generates the driving voltage of the control terminal 104 and the BLDC driver by the input high voltage. Wow, Outputting the high voltage generated by the power device 32 and the switching mode power supply unit 50, the driving voltage of the control terminal 104, and the driving voltage of the BLDC driver to perform driving and control of the BLDC motor (S180). Wow, Checking whether the power of the control system 100 is on / off (S190); When the power supply of the control system 100 is on, the boost inductor 31 returns to step S140 in step S200 of generating a feedback voltage, and when the power of the control system is turned off, the BCD motor is driven. Type control method for controlling fan filter unit control system. delete It has a serial communication port, corrects the power factor of the DC power supply using a pulse width modulated signal, drives a three-phase BLDC motor by a high voltage boosted to a constant voltage, and the actual speed of the three-phase BLDC motor generated by the driving. When a signal and an abnormal symptom occur, an alarm signal is generated, and the three-phase PWM switching pattern does not operate at a constant speed by comparing and analyzing the actual speed signal of the three-phase BLDC motor and the reference speed signal of the BLDC motor. A group-specific control system A in which one or more control systems 100 for generating a signal to control the speed of the BLDC motor and controlling to cut off the driving voltage of the three-phase BLDC motor by the alarm signal; , When receiving the actual speed signal and the alarm signal of the three-phase BLDC motor transmitted from the serial communication port of the group control system (A) to control the driving and stopping of the individual control system 100, and requests a monitoring command , And outputs the actual speed signal and the alarm signal of the three-phase BLDC motor in text, graphics, or a combination thereof so that the reading is possible, and the speed control command is requested when the speed control command of the three-phase BLDC motor of the control system 100 is requested. In the case of requesting a schedule control command that generates a reference speed signal of a three-phase BLDC motor that controls the control signal and transmits it to the corresponding control system 100 to enable control, and the speed control of the control system is possible by dividing it by a predetermined period. By transmitting a schedule control request signal to the control system to enable control, A data input unit 201 for inputting a monitoring command, a speed control command of a three-phase BLDC motor driven by a control system, or a schedule control command using a keyboard; A serial communication port unit 202, which is an interface for receiving an actual speed signal and an alarm signal of a three-phase BLDC motor transmitted from the control system 100, The memory unit 203 stores a real speed signal and an alarm signal of a three-phase BLDC motor input to the serial communication port unit 202 and stores a control program for directly controlling the corresponding control system using the stored data. )Wow, A display unit 204 for outputting an actual speed signal and an alarm signal of a three-phase BLDC motor displaying a driving process of the control system by a monitoring request in text, graphics, or a combination thereof; A monitoring command signal input from the data input unit 201, a reference speed signal of a three-phase BLDC motor for controlling driving of a three-phase BLDC motor of a control system, or a schedule control command signal and control stored in the memory unit 203 Standard of three-phase BLDC motor that processes text, graphic or combination of these to enable reading using program and actual speed signal and alarm signal of three-phase BLDC motor and controls the speed of three-phase BLDC motor of the corresponding control system. The serial communication port unit 202 controls a speed signal to be transmitted to the control system through the serial communication port unit 202, and enables a control at a predetermined period of the control system by a schedule control command signal. At least one management system 200 including a CPU unit 205 for controlling transmission to the corresponding control system through; Is connected to the management system 200 and a wireless communication network is equipped with a wireless LAN card that enables monitoring and speed adjustment of a three-phase BLDC motor driven by requesting a monitoring command request or a speed control command of the control system 100 is mounted. Management system for managing a BLC motor-driven fan filter unit control system comprising a wireless terminal (300) consisting of a laptop, a cellular phone capable of IMT-2000 service, a PCS phone, or a PDA. delete