KR101851165B1 - Switching module for ac power supply with simplified internal wiring - Google Patents

Abstract

The present invention relates to a switching module for AC power supply with simplified internal wiring which can improve the stability of wiring by performing the operation of supplying and blocking electricity at the zero point of an AC phase. A power cut-off part for repairing wiring, a control part for supplying and cutting off electricity according to the control signal of an operation part, and a condition control part for automatically controlling the operation part according to a sensor value are operated when a voltage is zero. So, the operation part can be operated without additional stabilizing equipment.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an AC power supply switching module,

The present invention relates to an AC power supply switching module in which internal wiring of equipment constituted by electric wiring is simplified. More particularly, the present invention relates to an AC power supply switching module in which an electric wiring and an interrupting operation are performed at a zero point of an AC phase, To a simplified AC power switching module.

Heating devices such as electric mats, electric hats and the like, which are mainly used in the home, and devices driven by the rotation of the motor are devices that supply and cut off electricity frequently. As the ON / OFF of the electricity is frequently performed, spark and noise are generated when the electricity is interrupted or supplied. Surge, called spark, noise, etc., is an electrical phenomenon of high voltage and high current that appears and disappears for a very short time. Depending on the cause and size of the surge, the surge damages the digital system equipment or causes the electrical insulation deterioration of the system or components due to the accumulated surge. Also, ripple and electrical noise appear in the switching process, and ripple and noise shorten the lifetime of the capacitor. Therefore, a spark killer and a capacitor are additionally provided to stabilize the circuit, and are used for electric wiring.

Korean Patent Laid-Open No. 10-2008-0107770 (hereinafter referred to as "prior art document") provides an impedance resistor at the AC input terminal, thereby reducing the inrush current flowing into the switching power supply, To a switching power supply that is safer and can be produced at a lower cost.

The prior art has a problem that the circuit is somewhat complicated as the impedance resistance is added to the circuit, the cost of the circuit is increased, and the labor cost of the wiring work is also increased.

Korean Patent Laid-Open No. 10-2008-0107770 (entitled "Switching power supply device", published on December 12, 2008)

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a power supply control apparatus, a power supply control apparatus, The purpose is to make it work.

Another object of the present invention is to provide a power cut-off unit and a condition control unit connected to different lines of an AC voltage source when the power cut-off unit and the condition control unit are provided in a single number.

An AC power switching module in which internal wiring according to the present invention is simplified includes an AC voltage source for applying AC power ; A first signal transfer element for transferring a first signal according to the application of the first voltage and a second signal transfer element for receiving the AC voltage and having a gate connected to the first signal transfer element the first when the first signal from the first signaling device not received the first at least one power source that contains a power switch to block application of the AC voltage blocking unit; And a second signal transfer element for transferring a second signal in accordance with the application of the second voltage and a second signal transfer element for applying a second voltage in accordance with a control signal input from the outside, And a second power switch for blocking the AC voltage when the second signal is not received from the second signal transmission element ; .

According to another aspect of the present invention, there is provided an AC power supply switching module in which internal wiring is simplified in accordance with the present invention includes an operation unit for performing a specific operation according to a potential difference of the AC power supply, a sensor unit for sensing a state of the operation unit, A third signal transfer device for transferring a third signal according to the application of the third voltage, and a second signal transfer device for transferring the third signal according to the third voltage, And a third power switch for receiving the AC voltage passed through the third signal transmission element and for blocking the AC voltage when the third signal is not received from the third signal transmission element.

The first signal transmission device, the second signal transmission device, and the third signal transmission device according to the present invention may include a diode whose current flows in a specific direction according to a voltage state according to voltage application, and a zero And a zero voltage switch that is activated when the cross circuit is connected to the gate and the voltage is a zero voltage.

The power cutoff unit, the control unit, and the condition control unit according to the present invention may include a resistor connected to the signal transmission device and the electrode of the power switch; And another resistor connected between the gate of the power switch and the other electrode of the power switch, wherein the signal transmission element and the power switch are connected to each other through a first signal transmission element and a first power supply A second signal transmission element and a second power supply switch in the control section, and a third signal transmission element and a third power supply switch in the condition control section.

When the power cut-off unit and the condition control unit of the present invention are provided in a single number, the power cut-off unit and the condition control unit are connected to different lines of the AC voltage source.

According to the present invention, there is provided a power supply apparatus including a power cutoff unit for repairing a wiring, a control unit for supplying and cutting off electricity according to a control signal of the operation unit, and a condition control unit for automatically controlling the operation unit according to the sensor value, There is an effect that the operating portion can be operated.

Also, in the present invention, when the power cut-off unit and the condition control unit are provided in a single number, the power cut-off unit and the condition control unit are connected to different lines of the AC voltage source, thereby stably and minimizing the module.

1 is a configuration diagram of an AC power switching module in which internal wiring according to the present invention is simplified.
2 is a circuit diagram of an AC power switching module in which internal wiring according to the present invention is simplified.
3 is a graph showing an experimental measurement waveform used in the AC power switching module according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

1 is a configuration diagram of an AC power switching module in which internal wiring according to the present invention is simplified. 1, an AC power switching module according to the present invention includes an AC voltage source 100, a power shutoff unit 200, a control unit 300, a condition control unit 400, an operation unit 500, and a sensor unit 600 .

The AC voltage source 100 is an apparatus for applying AC power.

The power cut-off unit 200 is a device for artificially cutting off the AC power applied from the AC voltage source. The power cut-off unit 200 is supplied or cut off according to ON / OFF of the switch.

1, the power cutoff unit 200 may include a switch unit 210, a first signal transmission device 220, and a first power switch 230.

The switch unit 210 is a device for applying or cutting off the first voltage. The first voltage is a voltage for operating the power cut-off unit 200, and is supplied or cut off by turning on / off the switch unit 210.

The first signal transmission device 220 is a device that transmits a first signal according to the application of the first voltage. The first signal transmission element 220 includes a light emitting element and a light receiving element according to the application of the first voltage and transmits the electric signal to the light. A detailed description of the first signal transmission element 220 will be described later with reference to FIG.

The polarity of the first power switch 230 is connected to the AC voltage source 100 to receive an AC voltage. Further, the gate of the first power switch 230 is connected to the first signal transmission element 220 to receive the first signal. Accordingly, when the switch unit 210 is turned on, the first signal transfer device 220 transfers the first signal according to the first voltage to the first power switch 230. The first power switch 230 is activated by the first signal input to the gate. On the other hand, when the switch unit 210 is turned OFF, the first power switch 230 is not operated according to the non-receipt of the first signal and cuts off the applied AC power.

The control unit 300 is a device for supplying or cutting off the AC power according to a control signal. 1, the control unit 300 may include a control input unit 310, a second signal transmission device 320, and a second power switch 330.

The control input unit 310 is a device for applying a second voltage according to a control signal input from the outside. The second voltage is a voltage for operating the control unit 300, and is supplied or cut off according to the control signal. The control signal is a signal for controlling the operation unit 500. For example, when the operation unit 500 is a heater, power is supplied or cut off according to ON / OFF of the heater. Accordingly, when the control signal is input to cut off the heater, the control input 310 receives the second voltage.

The second signal transmission device 320 is a device for transmitting a second signal according to the application of the second voltage. The second signal transmission device 320 has the same configuration as the first signal transmission device 220. A detailed description of the second signal transmission element 320 will be described later with reference to FIG.

The polarity of the second power switch 330 is connected to the AC voltage source 100 to receive the AC voltage. Also, the gate of the second power switch 330 is connected to the second signal transmission element 320 to receive the second signal. Accordingly, when the supply signal is inputted to the control input unit 310, the second power switch 330 is operated by the second signal input to the gate. On the other hand, when the shutoff signal is inputted to the control input unit 310, the second power switch 330 is not operated according to the non-receipt of the second signal, and cuts off the applied AC power.

1, the condition controller 400 may include a signal comparator 410, a third signal transmitter 420, and a third power switch 430.

First, the operation unit 500 and the sensor unit 600 will be described. The operation unit 500 is a device that performs a specific operation according to the potential difference of the AC power source. That is, the operation unit 500 receives electricity and performs a specific operation. The operation unit 500 may be an apparatus such as an electric heater, a motor, or the like.

The sensor unit 600 senses a state of the operation unit 500 according to the performance of the operation unit 500. For example, if the operating unit 500 is an electric heater, the sensor unit 600 is a thermocouple for sensing the temperature (state) of the electric heater.

The signal comparing unit 410 compares the state information sensed by the sensor unit 600 with predetermined setting information to determine whether the third voltage is applied. The setting information is information set by the user. For example, when the operating unit 500 is an electric heater and the user sets the temperature of the electric heater to 40 DEG C, the setting information becomes 40. [

When the state information sensed by the sensor unit does not satisfy the setting information, the signal comparator 410 receives the third voltage.

The third signal transmission device 420 is a device that transmits a third signal according to the application of the third voltage. The third signal transmission device 420 has the same configuration as the first signal transmission device 220. A detailed description of the third signal transmission device 420 will be described later with reference to FIG.

The polarity of the third power switch 430 is connected to the AC voltage source 100 to receive the AC voltage. In addition, the gate of the third power switch 430 is connected to the third signal transmission device 420 to receive the third signal.

Therefore, when the third voltage is applied from the signal comparator 410, the third power switch 430 is activated by the third signal input to the gate. On the other hand, when the third voltage is not applied to the control input unit 310, the third power switch 430 is not operated according to the non-receipt of the third signal and cuts off the applied AC power.

2 is a circuit diagram of an AC power switching module in which internal wiring according to the present invention is simplified. The description of the foregoing is omitted or simplified. The AC voltage switching module of the present invention can be made more clear by the following description.

Referring to FIG. 2, an AC voltage source 100 using an AC voltage of 220 V is provided, and is formed of lines of R-S.

The power cutoff unit 200 includes a switch unit 210, a NAND gate N1, a first signal transmission device 220, a first power switch 230, a resistor R11, and another resistor R12. In addition, the first signal transmission device 220 includes a diode 221, a zero cross circuit 222, and a zero voltage switch 223.

Referring to FIG. 2, the switch unit 210 is connected to a switch SW for turning on / off the first power source. Therefore, when the switch SW is closed by the switch unit 210, the first power is supplied to the NAND gate N1. On the other hand, when the switch SW is opened, the supply of the first power source is cut off.

When the first voltage is supplied to the NAND gate N1 as the switch SW is closed, the NAND gate N1 becomes low according to the input high signal High. When the NAND gate N1 is in a low state, a current in a specific direction flows through the diode 221. [

The current flows in a specific direction in the diode 221 so that the diode 221 emits light and the zero voltage switch 223 is operated by the zero cross circuit 222 operated according to the light emission of the diode 221. Specifically, the gate of the zero voltage switch 223 is connected to the zero cross circuit 222, and the zero cross circuit 222 is operated in accordance with the light emission of the diode. Consequently, the zero voltage switch 223 is operated by the zero cross circuit 222 when the first voltage is a zero voltage.

2, both electrodes of the first power switch 230 are connected to the R line of the AC voltage source 100, and the gate of the first power switch 230 is connected to the first signal transmission device 220. Also, the first power switch 230 is operated according to the signal received at the gate to receive the AC power. A resistor R11 connected to the first power switch 230 and the first signal transmission device 220 and another resistor R12 connected between the gate of the first power switch 230 and another electrode ).

When no current flows through the diode 221 as the switch SW is opened, no signal is transmitted to the gate of the first power switch 230. The first power switch 230 is not activated as the signal is not received, and the applied AC power is cut off.

2, the power cut-off unit 200 may be provided in the S line as well as the R line. The power cut-off unit 200 may include a power cut- Line to the S-line rather than the line.

Referring to FIG. 2, the controller 300 is arranged to receive the AC power that has passed through the power cut-off unit 200. The control unit 300 includes a control input unit 310, a second NAND gate N2, a second signal transfer device 320, a second power switch 330, a resistor R21, and another resistor R22. The control unit 300 has the same configuration as that of the power cut-off unit 200 except for the control input unit 310. Therefore, the description of the power cutoff unit 200 will be omitted.

The control input unit 310 applies a second voltage according to a control signal input from the outside. The control signal is a signal for controlling the operation unit 500 and may be a signal such as an operation or a stop of the operation unit 500. When the operation control signal of the operation unit 500 is input to the control input unit 310, the second voltage is applied to the NAND gate N2. Further, when the stop control signal of the operation unit 500 is input to the control input unit 310, the second voltage becomes unfamiliar to the NAND gate N2. Since the operation method of the second power switch 330 according to the operation of the NAND gate N2 is the same as that of the power shutoff part 200, detailed description will be omitted.

On the other hand, the controller 300 is connected to the same phase of both ends (R line, S line) of the AC power source. Accordingly, the second power switch 330 connected to the S line and the second power switch 350 connected to the R line are operated simultaneously according to the control signal input by the control input unit 310. [

The power supply to both ends is simultaneously supplied or cut off according to the control signal, thereby improving the electrical stability.

2, the condition control unit 400 is arranged to receive the AC power that has passed through the control unit 300. [ The condition control unit 400 includes a signal comparator 410, a NAND gate N4, a third signal transmission device 420, a third power switch 430, a resistor R31 and another resistor R32 . As shown in FIG. 2, the condition control unit 400 is the same as the power cutoff unit 200 except for the signal comparing unit 410. Therefore, the description of the power cutoff unit 200 is omitted because it is redundant.

The operation unit 500 performs a specific operation by the AC voltage applied from the AC voltage source 100. The sensor unit 600 senses the state of the actuation unit 500. 2, status information of the operation unit 500 measured by the sensor unit 600 is transmitted to the signal comparison unit 410 of the condition control unit 400. The signal comparator 410 checks whether the received status information satisfies predetermined setting information. If the state information does not satisfy the setting information, the signal comparator 410 applies the third power source to the NAND gate N4. Further, when the state information satisfies the setting information, the signal comparator 410 looks at the third power source to the NAND gate N4. Since the operation method of the third power switch 430 according to the operation of the NAND gate N4 is the same as that of the power shutoff unit 200, detailed description will be omitted.

2, the power cut-off unit 200 may be provided not only in the S-line but also in the R-line as well as in the case where the condition control unit 400 comprises a single number. But may be changed to be connected to the R line.

2 is an embodiment in which the power shutoff unit 200 and the condition control unit 400 are provided in a single number. The power cutoff unit 200 is connected to the R line of the AC voltage source 100, and the condition control unit 400 is connected to the S line. As shown in FIG. 2, since the power shutoff unit 200 and the condition control unit 400 are connected to different lines, the stability of the electric circuit can be improved. For example, when the AC power of the R line connected to the power cutoff unit 200 is cut off, the AC power of the S line connected to the condition control unit 400 is also cut off. Therefore, even if the power cutoff unit 200 and the condition control unit 400 control only one line, it is possible to cut off voltages of different lines.

3 is a graph showing an experimental measurement waveform used in the AC power switching module according to the present invention.

Referring to FIG. 3, it can be seen that the ON waveform and the OFF waveform are shown in an enlarged scale. Referring to the ON waveform of FIG. 3, when the ON signal is input, the voltage across the load and the load current are in the form of a sin (Sin). In addition, due to the action of the zero-cross circuit, the voltage across the load and the load current operate at a zero voltage, thereby stably supplying electricity.

In addition, it can be seen that both the voltage across the load and the load current operate when the OFF waveform of FIG. 3 is also at zero voltage, which is the same as the ON waveform.

To this end, the AC power switching module of the present invention does not supply the current immediately even when the AC power supply voltage is in the ON state, and supplies the current when the AC power supply voltage is in the vicinity of the zero voltage. In addition, even when the AC power supply voltage is turned off, it is not immediately shut off, and the load current is reduced to interrupt the current in the zero voltage region. Thus, by allowing the AC power supply voltage to be switched at a minimum, ripple, noise, and surge voltage are minimized. On the other hand, in order to supply or cut off the current in the zero voltage region, the voltage across the load and the phase of the load current are the same.

100: AC voltage source 200:
210: switch part 220: first signal transmission element
230: first power switch 300:
310: control input unit 320: second signal transmission element
330: second power switch 400: condition control unit
410: Signal comparison unit 420: Third signal transmission element
430: Third power switch 500: Operation part
600:

Claims (5)

An AC voltage source for applying an AC voltage;
A first signal transfer element for transferring a first signal according to the application of the first voltage and a second signal transfer element for receiving the AC voltage and having a gate connected to the first signal transfer element And a first power switch interrupting the application of the alternating voltage when the first signal is not received from the first signal transducer; And
A control signal input unit for applying a second voltage according to a control signal input from the outside, a second signal transferring unit for transferring a second signal according to the application of the second voltage, And a second power switch for disconnecting the AC voltage when the second signal is not received from the second signal transfer device, wherein the second power switch includes a simplified AC voltage switching module .
The method according to claim 1,
An operation part performing a specific operation according to a potential difference of the AC voltage;
A sensor unit for sensing a state of the operation unit;
A signal comparing unit comparing the state information sensed by the sensor unit with predetermined setting information to determine whether a third voltage is applied; A third signal transfer device for transferring a third signal according to the application of the third voltage and a third signal transfer device for receiving the AC voltage through the control unit and receiving the AC signal when the third signal is not received from the third signal transfer device, Further comprising at least one condition control section including a third power switch for shutting off the first power switch.
3. The method of claim 2,
The first signal transmission element, the second signal transmission element, and the third signal transmission element
A diode in which a current flows in a specific direction according to a state of a voltage according to a voltage application; And
And a zero voltage switch connected to the gate and operated when the voltage is a zero voltage, the zero crossing circuit being operated according to the light emission of the diode.
The method of claim 3,
And the power shutoff unit. The control unit and the condition control unit,
A resistor connected to the signal transmission element and the electrode of the power switch; And
Another resistor connected between the gate of the power switch and the other electrode of the power switch;
Respectively,
At this time, the signal transmission element and the power switch,
Wherein the power interruption unit includes a first signal transmission element and a first power switch,
Wherein the controller controls the second signal transmission element and the second power switch,
The condition control unit controls the third signal transmission element and the third power switch,
Which means that the internal wiring is simplified.
3. The method of claim 2,
Wherein the power interruption unit and the condition control unit are connected to different lines of the AC voltage source when the power interruption unit and the condition control unit are provided in a single number.

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