KR200246860Y1 - Automatic voltage regating device for saving electric power - Google Patents

Abstract

The present invention relates to a power-saving automatic voltage regulator, more specifically, the output voltage to the output side is always output to the optimal saving voltage to ensure that the life of the various devices as well as to obtain a power saving In addition, it is to provide a power-saving automatic voltage regulating device that prevents the occurrence of power failure due to the failure of the device by manual recovery in the event of a device failure.

In other words, the control power source receives AC and lowers the voltage to DC 5V, which is used as the power supply for the microcomputer and the output control power, and the output voltage is directly detected through the rectifier BD1 of the power supply unit 11. It immediately transfers the change of voltage to the output control side to change the set voltage to maintain the same voltage at all times, and also detects the frequency of the current input voltage when the input voltage first comes in and detects the voltage at the zero level of the voltage. In order to prevent damage to the control board (4) by the load, it can automatically drive the bypass which can output the incoming input voltage. Alarm output is made so that energy saving, power rate of change are fixed by efficient use of energy Life extension, to a semi-permanent lifespan in automated, solid-state Switching devices used in power savings by using the microcomputer of the equipment is used on one wishes to provide an automatic voltage regulating unit.

Description

Automatic voltage regating device for saving electric power}

The present invention relates to a power-saving automatic voltage regulator, more specifically, the output voltage to the output side is always output to the optimal saving voltage to ensure that the life of the various devices as well as to obtain a power saving In addition, it is to provide a power-saving automatic voltage regulating device that prevents the occurrence of power failure due to the failure of the device by manual recovery in the event of a device failure.

In general, the automatic voltage regulator used is a method of supplying power to a reverse proportional transformer by connecting different power sources as shown in FIG. 1 and always attaching a large capacity resistor for absorption in order to block excessive current during switching. There was a problem of generating heat in the resistance, and during the lottery production, the windings up to V5-V8 had to be designed for the output current, which made the transformer difficult to work and also had problems such as manufacturing cost improvement.

In this design, the control power supply receives AC and lowers the voltage to DC 5V, which is used as the power supply for the microcomputer and the output control, and the output voltage is immediately output through the rectifier of the power supply. It transfers it to the set voltage by transferring it to the control side so that the same voltage can be maintained at all times,

It also detects the frequency of the current input voltage when the input voltage first comes in, and plays a role of switching the voltage at the zero level of the voltage. In order to prevent damages, the alarm output is also output so that bypass can be output directly to the incoming input voltage, saving energy by using energy efficiently and fixing the fluctuation rate of the power to extend the life of the device and use the microcomputer. The present invention has been completed with the technical problem of the present invention to provide an automatic voltage control device capable of semi-permanent life by the automation of the power saving, contactless use.

1 is a circuit diagram of a conventional automatic voltage regulator

2 is an electrical circuit diagram showing a preferred embodiment of the present invention

3 is a detailed circuit diagram of the control board applied to the present invention

4 is a transformer connection diagram when the present invention is applied to a single-phase three-wire system.

5 is a transformer connection diagram when the present invention is applied to a single-phase two-wire system.

☞ Explanation of symbols used in the main part of the drawing ☜

1: power supply 2: bypass magnet contact

3: inverse trance 4: control board

5: overload detection unit 6: tap transformer

7 power supply transformer 11 power supply

12: low pressure monitoring unit 14: bypass output unit

15 solid state device module 16 connection terminal

Figure 2 shows an electrical circuit diagram showing a preferred embodiment of the present invention, below will be described in detail the configuration of the present invention.

The power saving automatic voltage regulator of the present invention is set automatically when the power is turned on, so that it can be extended to the optimal saving voltage (the voltage set at the factory) to maintain the optimum life saving voltage and the most optimal power saving voltage. In case of power failure, the power return or over current and low voltage are automatically bypassed so that the power input voltage is output.

That is, the present invention can be selected automatically and manually on the power input side, and the power supply unit consisting of the AUTO button and bypass switch and the AUTO lamp and bypass lamp that are turned on so that the alarm can be automatically returned manually. (1) is connected, and inversely proportional transformer (3), which adds or subtracts a voltage according to the input voltage of the control board (4), is connected to the output side of the power supply (1), and is inversely proportional to the power supply (1). The bypass magnet contact (2), which acts as a switch for directly outputting the input voltage without going through the inverse transformer (3), is connected between the transformers (3) so that power can be supplied manually.

In addition, the control board (4) is connected to the overload detection unit (5), the power output side in order to manually switch the power supply unit (1) in the case of overcurrent alarm and low voltage alarm and the 10 contacts of the control board (4) Connect the tap transformers 6 connected to each other, and connect the power transformer 7 to the output side of the tap transformer 6 for output voltage monitoring and control board power supply, and also detect the high and low output voltage. (4) Make sure to supply power (microcom power).

On the other hand, when looking at the control board 4 based on Figure 2, which receives AC down to a low voltage to DC 5V to use as a power supply for the power supply and control of the microcomputer and the output voltage directly through the rectifier (BD1) of the power supply By detecting, the change of the output voltage is immediately transferred to the output control side and changed to the set voltage so that the same voltage can be maintained at all times.

It also detects the frequency of the current input voltage when the input voltage first comes in, and plays a role of switching the voltage at the zero level of the voltage. In order to prevent damage, the alarm output is also output to automatically drive bypass which can output incoming input voltage.

That is, the rectifier (BD1) for rectifying the AC 10V coming through the transformer to supply a stable voltage to the CPU to receive a power supply by the power supply transformer (7) to make a pulse, the diode (D1) for making the pulse current to a complete DC, Power supply unit consisting of L1 and capacitor (C1), a constant voltage semiconductor (Q1) that is applied to a voltage of about DC 10V and always keeps the output voltage at 5V and a capacitor (C2, C6) to further stabilize the power supply ( 11) and,

Constant voltage semiconductor (Q2) that senses the frequency (50Hz, 60Hz) of the supply voltage from the rectifier (BD1) and delivers it to the CPU, and capacitor (C3) that finds the zero level of AC power while reading the frequency while stabilizing the frequency. A frequency sensing unit 12 configured to be used in common in a 50 Hz use region and a 60 Hz use region,

Attenuate the 10V pulsating power from the rectifier BD1 at the diode D2 connected to the resistor R4, and the remaining voltage is input to the CPU's A / D via the resistors R5, R6 and R7 and the capacitor C4. And, by using the resistor (R6) to adjust the set voltage to detect the high and low of the output voltage, and the voltage monitoring unit 13 for monitoring the low voltage input, and

It consists of photocoupler (PT) connected to CPU, resistor (R11) and rectifier (BD3), and the output from RC0 is transferred to resistor (R11) through photocoupler (PT) to drive relay (RE1) Alternatively, the bypass output unit 14 generates an alarm output automatically when the overcurrent detects an incoming signal through the low pressure monitoring unit 13 and the overload detection unit 12, and automatically operates the bypass.

CPU with internal memory, A / D circuit built in to detect voltage and current, and program that can be programmed externally and input the program to change output status,

When the output is turned on from the CPU, the photo triac (PT1) is turned on and the triac (T2) is always turned on at the zero point of AC, sending AC power from the terminal to the inverse transformer (3). The 0.1u capacitor is designed to protect the device by blocking the noise generated when the triac (T2) is turned on or the noise generated when connected to the inverse transformer (3). Make constant voltage, change the input voltage of inverse transformer (3), control output from CPU according to ratio of output to input, and apply power to tap transformer (6) at zero level of sine wave, A contactless element module 15 for output control which minimizes and maintains a constant voltage while preventing a power failure;

It consists of a connection terminal 16 to which the tap transformer 6 and the inverse proportional transformer 3 are connected, and includes a setting lamp, a low lamp and a hi lamp, and an overload detection unit 5.

The present invention, which can be configured as described above, can be used by being applied to various electric devices,

First, apply power to the power supply (1) and press the AUTO button, the R1a contact is turned on through the bypass switch R1b contact, and a self-holding circuit is formed. The power is output to the output side through the inverse transformer (3) and M1b on the output side. AC10V power is applied to the control board (4) through the power supply transformer (7) for output voltage monitoring and control board power supply connected to the terminal.

The magnetic holding circuit is maintained even if R turns off the AUTO switch. In other words, AL1 is always ON when power is supplied to CPU board except the alarm. To stop the self-holding circuit, press the bypass switch once and the R1a contact turns off and the self-holding circuit is broken. In addition, even if the contact point of AL1 is dropped, the R1a contact point is OFF and the magnetic holding circuit is broken. The R1a is an R1a contact is turned off immediately when the alarm output of the overload detection unit 5 is issued. In addition, when the power is initially turned on, the AUTO switch is not pressed. Therefore, R1a is OFF. Therefore, the power does not turn on automatically. When R1a is OFF, M1 is automatically turned on through R1b contact. ) Is activated and the power input is directly connected to the output without passing through the control board (4).

When AC 10V coming into the power supply unit 11 through the power supply transformer 7 is rectified by the rectifier BD1, a pulse current is made, and this pulse flow is made into a complete DC in the capacitor C1 through the diode D1 through L1. DC 10V voltage is applied to the CPU from the constant voltage semiconductor (Q1), where L1 of the input terminal of the constant voltage semiconductor (Q1) is set to prevent external power noise, and the output voltage is always 5V even if the input varies from 6V to 20V. It was used to keep. The voltage passing through the constant voltage semiconductor (Q1) is supplied to the CPU internal circuit as a complete DC 5V, and the rear capacitors (C2, C6) is to stabilize the 5V power supply.

As described above, the power applied to the CPU through the power supply unit 11 passes through the frequency sensing unit 12 and the low pressure sensing unit 13. That is, the pulsed power output from the rectifier BD1 is the frequency sensing unit 12. It enters the base of the constant voltage semiconductor (Q2) and operates the constant voltage semiconductor (Q2) to transmit the frequency of the current power supply voltage to the CPU, and the capacitor (C3) depends on to deliver the stabilized frequency to the CPU. While reading the frequency, it plays a role of finding the zero level of AC power, and the 10V pulsating power from the rectifier BD1 is attenuated by the diode D2 connected to the resistor R4 of the low voltage sensing unit 13 and remaining. The voltage is input to the A / D of the CPU through the resistors R5, R6 and R7 and the capacitor C4. At this time, the output is adjusted to match the set voltage by adjusting the resistance R6 with the voltage to be set. To make it work All.

In this case, A / D used 8bit (with resolution from 0 to 255), and the error range of output was made possible by changing the setting value of A / D.

As described above, when the power unit 11 supplies power to the CPU, the CPU drives several contactless element modules 15 connected to the tap transformer 6, and at this time, the tap transformer connected to the contactless element module 15 is provided. Each transformer V1-V11 of (6) outputs different voltages, and V1 and V9 are applied with input voltage determined by the CPU, and the rest are inversely proportional to the proper voltage by receiving the voltage from the control board (4) when the voltage is automatic. It is always connected to the transformer (3) to achieve a constant voltage. (See Table 1)

One circuit of the contactless device module 15 will be described in detail. When the output is turned on in the CPU, the photo triac PT1 is turned on (when the AC signal is controlled by the photo triac PT1, the input and the output are isolated. In addition, the triac (T2), which can be used for AC signal control, always turns on at the zero point of AC so that AC power coming from the terminal is sent to the other terminal (inversely proportional transformer), and 120Ω and 0.1 on the output side. The capacitor of u is used to protect the device by blocking the noise generated when the triac T2 is turned on or the noise generated at the moment of being connected to the inverse transformer 3.

Table 1

For example, when terminal 1 and terminal 5 are connected and the output comes out, as shown in the table above, the primary voltage applied to the inverse transformer (3) becomes 82V, and the inverse transformer (3) receiving the voltage is 16V. It plays a role of reducing the input voltage, and when the power supply is 220V, the output is reduced to 204V.

In the control board 4, the voltage coming from the current transformer CT (the voltage coming out here is AC voltage) is DC-directed through the rectifier BD2, and a specific current is generated using the resistors R8, R9, R10 and the capacitor C5. If it is abnormal, it consists of overload detector (5) which inputs current value to CPU A / D, photocoupler (PT), resistor (R11) and rectifier (BD3) connected to CPU, and output from RC0 The bypass output unit 14 is configured to transfer the resistor R11 through the photocoupler PT to drive the relay RE1. Therefore, when a specific current abnormality is detected by the overload detector 13, the CPU outputs the bypass output unit. Since the R1a contact of the power supply unit 1 is immediately turned off by driving (14), M1 is automatically turned on through the R1b contact, and the bypass magnet contact (2) operates to input the control board (4). It is connected directly to the output without passing through.

The photocoupler PT is used for the purpose of insulation from an external circuit and is also used for preventing noise from coming in from the outside.

Meanwhile, the present invention is provided with a setting lamp, a low lamp, and a hi lamp, so that the circuit operation of the present invention can be confirmed through these.

The present invention, which can be configured as described above, receives AC and lowers the voltage to DC 5V, which is used as the power supply for the microcomputer and the output control power, and directly detects the output voltage via the rectifier BD1 of the power supply unit 11. It immediately transfers the change of output voltage to the output control side to change the set voltage to maintain the same voltage at all times. Also, it detects the frequency of the current input voltage when the input voltage first comes in and detects the zero level of the voltage. In order to prevent the damage to the control board (4) by the load, the bypass automatically outputs bypass to prevent the damage of the control board (4) by the load. The alarm output came out to run,

According to the present invention, the size of the control element can be reduced and miniaturized. The development of a transformer suitable for electronic control can reduce the production cost, and supply the power to the bypass magnet contact point (2) when the load is shorted. Can be protected safely.

And since the A / D of the CPU uses 8bit, the conversion speed can be made 41ms faster than before.The built-in frequency detector 12 (50Hz, 60Hz common use) can guarantee the convenience of use. Through the low voltage detection unit (5,13) can be used to protect the equipment and the protection of the equipment used, it is a very useful design that guarantees the benefits, such as the constant output of the most excellent voltage saving effect.

Claims (1)

Automatic and manual selection can be made on the power input side, and on the output side of the power supply unit 1 with the AUTO button and bypass switch connected so that the automatic recovery can be done manually when an alarm is output, according to the input voltage of the control board 4 Inverse transformer (3) is connected to the power supply unit (1) and inversely proportional transformer (3) phase that acts to add and subtract the reverse magnet contact (2) to directly output the input voltage without going through the inverse transformer (3) In a power saving automatic voltage regulator that can supply power manually by connecting The control board 4 is a rectifier (BD1) to rectify AC 10V coming through the transformer to make a pulse, the diode (D1), L1 and condenser (C1) to make the pulse is a complete DC, the voltage of about DC 10V A power supply unit 11, which is composed of a constant voltage semiconductor Q1 that is applied and always maintains an output voltage at 5 V, and capacitors C2 and C6 for further stabilizing the power supply; Constant voltage semiconductor (Q2) that detects the frequency (50 Hz, 60 Hz) of the pulse power supply voltage from the rectifier (BD1) and delivers to the CPU, and capacitor (C3) to stabilize the frequency and read the zero level of AC power while reading the frequency. A frequency sensing unit 12 consisting of: Attenuate the 10V pulse current supply from the rectifier BD1 at the diode D2 connected to the resistor R4 and the remaining voltage passes through the resistors R5, R6 and R7 and the capacitor C4 to the A / D of the CPU. A low voltage monitor 13 for inputting and adjusting a set voltage with a resistor R6; It is composed of photocoupler (PT), resistor (R1) and rectifier (BD3) connected to CPU, and the output from RC0 is transferred to resistor (R1) through photocoupler (PT) to drive relay to low voltage or over current voltage. Bypass output unit 14 for automatically generating an alarm output by using a signal coming through the monitoring unit 13 and the overload detection unit 5 to automatically operate the bypass, CPU with internal memory, A / D circuit built in to detect voltage and current, and program that can be programmed externally and input the program to change output status, When the output is turned on from the CPU, the photo triac (PT1) is turned on, and the triac (T2) is always turned on at the zero point of AC to send AC power coming from the terminal to the inverse transformer (3). And 0.1u condenser are solid-state for output control combining 10 circuits to protect the device by blocking the noise generated when the triac (T2) is turned on or the noise generated when connected to the inverse transformer (3). The element module 15, It consists of a connection terminal 16 to which the tap transformer 6 and the inverse transformer 3 are connected, and includes a setting lamp, a low lamp, a hi lamp, and an overload detection unit 5. Voltage regulator.