KR100621433B1 - Watt-hour meter including magnetic core - Google Patents

Abstract

The present invention relates to an integrated power meter having a magnetic core, and more particularly, the core of the current transformer and transformer built in the integrated power meter is composed of nanocrystalline alloys, amorphous alloys, ferrites, metal cores, etc. having excellent magnetic properties. By efficiently changing the magnetic properties of the core to an electrical signal, it is possible to facilitate the conversion of voltage and current values through the transformer and current transformer, and semi-permanent without limiting the use time and the use range at high voltage (current) The present invention relates to an integrated power meter having a magnetic core capable of implementing magnetic properties.

The present invention provides a power supply unit for supplying power to the integrated power meter and the load from the power supply; A load part in which power supplied from the power supply part is consumed; A terminal unit connecting the power supply unit and the load unit with an integrated power meter body; Connected to the terminal portion, and detects the driving voltage in the integrated power meter, and wound the voltage and current coils connected to the power terminal and the load terminal of the terminal portion to any one of nanocrystalline alloy, amorphous alloy, ferrite, metal core, respectively, the terminal portion And converts the voltage and current applied to the line between the load and the load unit to a predetermined level, and insulates the line from the integrated power meter and applies the analog voltage and current to the A / D converter. And a current detector; An A / D converter for converting the voltage and current applied from the voltage and current detector in an analog form into a digital form and transmitting the digital data signal to a controller; A timer unit for outputting time information and transmitting the time information to the control unit; A data storage unit for storing a power amount calculation program and storing accumulated power amount data in which a current amount of used power and a total amount of used power are accumulated and calculated; Receives time information from the timer, receives the voltage and current digitally converted from the A / D converter and operates an integrated power meter according to the voltage, and uses the current by using the voltage, current, and time information. Calculates the amount of power and calculates a new integrated power amount accumulated by the total amount of power used up to now using the conventional integrated power amount stored in the data storage unit and the current power amount and the new integrated power amount to the data storage unit A control unit which stores the stored signal and applies a control signal to the power amount driving unit to display the power amount display unit; A power amount driver for controlling a driving state of the power amount display unit by receiving a control signal from the controller; And a power amount display unit for displaying the integrated power amount obtained by adding up the current power amount calculated by the controller and the total power amount used so far according to the control signal from the power amount driver.

Therefore, the present invention comprises the core of the current transformer and transformer built in the integrated power meter composed of nano-crystalline alloy, amorphous alloy, ferrite, metal core with excellent magnetic properties, and efficiently change the magnetic properties of the dual phase core to an electrical signal. In this way, it is possible to facilitate the conversion of voltage and current values through the transformer and the current transformer. In addition, there is an effect that can implement a semi-permanent magnetic characteristics without limiting the use time and the range of use at high voltage (current).

Integrated power meter, transformer, current transformer, amorphous alloy core, nano grain alloy core, ferrite core, metal core, power consumption

Description

Integrated power meter with magnetic core {Watt-hour meter including magnetic core}

1 is a perspective view showing a conventional analog integrated power meter.

Figure 2 is a block diagram showing the configuration of an integrated power meter according to the present invention.

3 is a perspective view showing a terminal unit according to the present invention.

Figure 4a is a circuit diagram for explaining the transformer according to the present invention.

Figure 4b is a circuit diagram for explaining the current transformer according to the present invention.

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

1.Integrated power meter 2 ... Voltage coil

3.Current coil 4 ... Rotator

5. Braking magnet 6 ... Weighing device and display

10.Power supply 20 ... Load

30.Terminal 40.Voltage and current detector

41 Transformers 42 Transformers

43.Magnetic core 50 ... A / D converter

51 ... voltage A / D converter 52 ... current A / D converter

60 Data storage 70 Timer

80 control unit 90 power control unit

100 ... Power display 101 ... Power usage display

102.Integrated power display

The present invention relates to an integrated power meter having a magnetic core, and more particularly, the core of the current transformer and transformer built in the integrated power meter is composed of nanocrystalline alloys, amorphous alloys, ferrites, metal cores, etc. having excellent magnetic properties. By efficiently changing the magnetic properties of the core to an electrical signal, it is possible to facilitate the conversion of voltage and current values through the transformer and current transformer, and semi-permanent without limiting the use time and the use range at high voltage (current) The present invention relates to an integrated power meter having a magnetic core capable of implementing magnetic properties.

As shown in FIG. 1, a conventional analog integrated power meter 1 includes a voltage coil 2, a current coil 3, a rotating plate 4 made of aluminum, a braking magnet 5, and a metering device. And a display unit 6, wherein the rotating plate 4 is installed between the voltage coil 2 and the magnetic pole in which the current coil 3 is wound, and the upper magnetic pole is a voltage coil connected in parallel with the load. Magnetized by (2), the lower magnetic pole is configured to be magnetized by the current coil 3 connected in series with the load.

The current coil 3 is connected in series with the load side, and its phase is the same as the phase of the voltage V applied to the load side, but the voltage coil 2 has a large impedance because of the large number of windings wound, and thus the voltage V When supplied, the voltage flux has a phase that is approximately 90 ° delayed from the voltage. In addition, the load current I flows through the voltage coil 2 so that the current magnetic flux has the same phase as the load current I. Accordingly, a moving magnetic field corresponding to the phase difference is generated between the voltage magnetic flux and the current magnetic flux. In response, a driving torque is generated in the rotating plate 4 so that the rotating plate 4 is rotated. The driving torque is proportional to the load power, and the rotational force of the rotating plate 4 is proportional to the product of the current I and the voltage V.

Meanwhile, a control torque proportional to the rotational speed is generated by the braking magnet 5 in the rotating plate 4, and the rotating plate 4 is rotated in a state where the driving torque and the control torque are in equilibrium so that the unit of the rotating plate 4 is rotated. The revolutions per hour is proportional to the load power. The metering device measures the number of revolutions of the rotating plate 4 within a certain period and calculates the amount of power in that period. Therefore, by installing a gear device between the rotating plate 4 and the metering device and the electric power display, the dial of the electric power display unit is rotated at a rotational speed shifted from the rotational speed of the rotary plate 4 to display the amount of power used by the user.

However, such a conventional analog integrated power meter is mechanically configured to display the integrated power amount by rotating the rotating plate 4 by the phase difference between the voltage coil (2) and the current coil (3). There is a problem that wear occurs in the mechanical components according to the use for a long time, and use at high voltage (current) is limited.

In order to improve this problem, there is no need for separate installation work, and it is not restricted by the installation space, and it detects voltage and current by using transformer and current transformer, and installs memory to store the amount of used power and integrated power. Has developed a small digital integrated power meter.

However, the cores of the current transformer and transformer built in the digital integrated wattmeter have a lower efficiency in converting magnetic characteristics into an electrical signal, and are improved than the analog integrated wattmeter, but still have limited use time and high voltage (current). There was this.

Accordingly, the present invention has been conceived to solve the above problems, the core of the current transformer and transformer built in the integrated power meter is composed of a nano-crystalline alloy, amorphous alloy, ferrite, metal core, etc., the magnetic properties of the core is an electrical signal It is an object of the present invention to provide an integrated power meter having a magnetic core that facilitates the conversion of voltage and current values through the transformer and the current transformer by efficiently changing the power.

It is another object of the present invention to realize semi-permanent magnetic properties without limiting the use time and the range of use at high voltage (current) by using excellent magnetic properties such as nano-crystalline alloys, amorphous alloys, ferrites, and metal cores. To provide an integrated power meter having a magnetic core capable of.

An integrated power meter having a magnetic core according to a preferred embodiment of the present invention for achieving the above object comprises a power supply for supplying power from the power supply to the integrated power meter and the load; A load part in which power supplied from the power supply part is consumed; A terminal unit connecting the power supply unit and the load unit with an integrated power meter body; Connected to the terminal portion, and detects the driving voltage in the integrated power meter, and wound the voltage and current coils connected to the power terminal and the load terminal of the terminal portion to any one of nanocrystalline alloy, amorphous alloy, ferrite, metal core, respectively, the terminal portion Converts the voltage and current applied to the line between the load and the load unit to a predetermined level, and insulates the line from the integrated power meter and applies the analog voltage and current to the A / D converter. And a current detector; An A / D converter for converting the voltage and current applied from the voltage and current detector in an analog form into a digital form and transmitting the digital data signal to a controller; A data storage unit for storing a power amount calculation program and storing accumulated power amount data in which a current amount of used power and a total amount of used power are accumulated and calculated; A timer unit for outputting time information and transmitting the time information to the control unit; Receives time information from the timer, receives the voltage and current digitally converted from the A / D converter and operates an integrated power meter according to the voltage, and uses the current by using the voltage, current, and time information. Calculates the amount of power and calculates a new integrated power amount accumulated by the total amount of power used up to now using the conventional integrated power amount stored in the data storage unit and the current power amount and the new integrated power amount to the data storage unit A control unit which stores the stored signal and applies a control signal to the power amount driving unit to display the power amount display unit; A power amount driver for controlling a driving state of the power amount display unit by receiving a control signal from the controller; A power amount display unit including a current power consumption display unit for displaying the current power consumption calculated by the control unit according to the control signal from the power drive unit, and an integrated power amount display unit for displaying the integrated power amount accumulated cumulatively used up to now ; Characterized in that consisting of.

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In addition, the core of the present invention is composed of any one of a nanocrystalline alloy core, an amorphous alloy core, a ferrite core, a metal core, the material of the nanocrystalline alloy core is Fe-Si-B-Nb-Cu-based, Fe-Zr- Iron-based nano-crystalline alloys of any one of the B-based, the material of the amorphous core is any one of the Co-Fe-Si-B-based cobalt-based, Fe-Si-B-based iron-based, the material of the ferrite core is Ni- One of Zn-based, Ni-Cu-Zn-based, Mg-Zn-based ferrite, and the metal core is made of Permalloy, Supermalloy, Mo Permalloy, Sendust, Iron powder, Si-steel It is characterized by that.

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Hereinafter, an integrated power meter having a magnetic core according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram showing a configuration of an integrated power meter according to the present invention, FIG. 3 is a perspective view showing a terminal unit according to the present invention, and FIG. 4A is a circuit diagram illustrating a transformer according to the present invention. 4b is a circuit diagram for explaining the current transformer according to the present invention.

2 and 3, an integrated power meter 1 having a magnetic core according to a preferred embodiment of the present invention includes a power supply unit 10 for supplying power from a power supply to an integrated power meter and a load unit; A load unit 20 in which power supplied from the power supply unit is consumed; A terminal unit 30 connecting the power supply unit and the load unit with an integrated power meter body; Connected to the terminal portion, and detects the driving voltage in the integrated power meter, and wound the voltage and current coils connected to the power terminal and the load terminal of the terminal portion to any one of nanocrystalline alloy, amorphous alloy, ferrite, metal core, respectively, the terminal portion And converts the voltage and current applied to the line between the load and the load unit to a predetermined level, and insulates the line from the integrated power meter and applies the analog voltage and current to the A / D converter. And a current detector 40; An A / D converter (50) for converting the voltage and current applied in the analog form from the voltage and current detector to the digital form and transmitting the digital signal to the controller; A data storage unit 60 having a power amount calculation program stored therein and storing accumulated power amount data of which the current amount of power used and the total amount of power used up to now are cumulatively calculated; A timer unit 70 for outputting time information and transmitting the time information to the control unit; Receives time information from the timer, receives the voltage and current digitally converted from the A / D converter and operates an integrated power meter according to the voltage, and uses the current by using the voltage, current, and time information. Calculates the amount of power and calculates a new integrated power amount accumulated by the total amount of power used up to now using the conventional integrated power amount stored in the data storage unit and the current power amount and the new integrated power amount to the data storage unit A control unit 80 for storing and applying a control signal to the electric power driver to display the electric power display unit; A power amount driver 90 for controlling a driving state of the power amount display unit by receiving a control signal from the controller; The power amount display unit 100 displays the integrated power amount obtained by adding up the current power amount calculated by the controller 80 and the total power amount used so far according to the control signal from the power amount driver.

The power supply unit 10 receives power from a power supply source and supplies the integrated power meter and a load unit.

The load unit 20 is a place where the power supplied from the power unit is consumed, the power is consumed by the electrical appliances that operate using electricity such as computers, refrigerators, washing machines, televisions, lights, etc. This is where.

The terminal unit 30 connects the power supply unit 10 and the load unit 20 with an integrated power meter main body. As shown in FIG. 3, the terminal unit 30 is connected to the power supply unit 10 and a power source AC is applied to the terminal. Power terminals 31 and 31 'and two load terminals 32 and 32' connected to the load unit 20 are fixed, and the power terminals 31 and 31 'and the load terminals 32 and 32' are fixed. The wire 33 is inserted into and fixed to the bolt 34, and the grounding power terminal 31 'and the grounding load terminal 32' are connected to the connection terminal 35 from the inside of the integrated power meter. It is connected via a bolt 34, the connection terminal 35 is coupled to the voltage coil terminal 36 which is connected to the transformer in the voltage and current detection unit, the power terminal 31 and the load terminal 32 and the voltage and The current coil stage 37 connected to the current transformer in the current detection unit is configured by fixing it with a bolt 34.

The voltage and current detection unit 40 is connected to the terminal portion, and the transformer 41 in the voltage and current detection unit 40 is nanocrystalline alloy, amorphous alloy having excellent magnetic properties as shown in FIG. 4A. And a core 43 formed of any one of a ferrite and a metal core, connected to the power terminal of the terminal unit, and converting a voltage applied to the line between the terminal unit and the load unit to a predetermined level between the line and the integrated power meter. It serves to insulate the circuit, and detects the transformed voltage and utilizes the data for calculating the amount of power used and the driving power for driving the integrated power meter. In addition, as illustrated in FIG. 4B, the current transformer 42 forms a core 43 using any one of nanocrystalline alloys, amorphous alloys, ferrites, and metal cores having excellent magnetic properties, and is connected to the load terminal of the terminal unit. And converts the current applied to the line between the terminal unit and the load unit to a predetermined level to insulate the line from the integrated power meter, and detects the current flow and uses it as data for calculating the amount of power used. do. Herein, the material of the nanocore is iron-based nanocrystalline alloy, the material of the amorphous core is any one of a cobalt-based alloy and an iron-based alloy, and the material of the ferrite core is Ni-Zn-based, Ni-Cu-Zn-based, Mg- One of Zn-based ferrites is most preferable, but ferrite containing Mn can be used. In addition, the material of the metal core is Permalloy (Ni-Fe alloy of Ni content of 78.5%), Supermalloy, Mo Permalloy (79% Ni, 79% Mo content 5%, Mn content 0.5%, Fe content 15.5%), Sendust, Iron powder, Si-steel is most preferred, but in order to improve the high-frequency characteristics mumetal (Mumetal: Ni content 79%, Cr Content 1.5%, Cu content 5%, Fe content 14.5%) may be used as the constituent material. In addition, magnetic saturation occurs even at low currents of the soft magnetic material, such as the nanocrystalline alloys, amorphous alloys, ferrites, and metal cores.

The A / D converter 50 converts an analog signal applied from the voltage and current detector 40 into a digital data signal, and the voltage A / D converter 51 is used for the voltage and current detector. The voltage value detected by the transformer 41 in the 40 is converted into a digital data signal and transmitted to the controller, and the current A / D converter 52 digitally converts the current value detected by the current transformer 52. The data signal is converted into a form and transmitted to the controller.

The data storage unit 60 stores a power calculation program and stores accumulated power amount data of a current amount of power used and a total amount of power used up to now.

The timer unit 70 outputs a current time and provides time information to the controller as data for calculating the amount of power used.

The control unit 80 receives the voltage and current converted in digital form from the A / D conversion unit 50 to operate an integrated power meter by the voltage, and receives time information from the timer unit 70, The power amount calculation program stored in the data storage unit 60 is executed. When the power calculation program is executed, current voltage and current data are detected using the voltage and current transmitted from the A / D converter 50, and the current is transmitted using the time information transmitted from the timer unit 70. After detecting the time to calculate the current amount of power used, using the calculated current amount of power to calculate the amount of power used for a predetermined time up to the detected time, and then stored in the data storage unit 60 Calculate the new integrated power by adding up the integrated power. The newly calculated current power and accumulated power are stored in the data storage 60, and a control signal is applied to the power driver to display the power display.

The power amount driving unit 90 receives a control signal from the control unit 80 to operate the power amount display unit.

The amount of power display unit 100 is a place indicating the amount of power calculated by the control unit 80 under the control of the amount of power driver 90, the current amount of power display unit 101 displays the current amount of power used, integrated power amount The display unit 102 displays the accumulated power amount summed up to the total amount of power used up to now.

As described above, various substitutions, modifications, and changes can be made by those skilled in the art without departing from the technical spirit of the present invention, and thus, the embodiments and the accompanying drawings are limited. It doesn't happen.

As described above, the integrated power meter having the magnetic core according to the present invention has the following effects.

First, the present invention comprises a core of a current transformer and a transformer built in an integrated power meter composed of a nano grain alloy, an amorphous alloy, a ferrite, a metal core and the like, and by efficiently changing the magnetic properties of the core into an electrical signal, The conversion of voltage and current values through the current transformer can be facilitated.

Secondly, the present invention can realize semi-permanent magnetic properties without limiting the use time and the range of use at high voltage (current) by using excellent magnetic properties such as nano-crystalline alloys, amorphous alloys, ferrites, metal cores, and the like. .

Claims (6)

In the integrated power meter having a magnetic core, A power supply unit for supplying power to the integrated power meter and the load unit from the power supply; A load part in which power supplied from the power supply part is consumed; A terminal unit connecting the power supply unit and the load unit with an integrated power meter body; Connected to the terminal portion, and detects the driving voltage in the integrated power meter, and wound the voltage and current coils connected to the power terminal and the load terminal of the terminal portion to any one of nanocrystalline alloy, amorphous alloy, ferrite, metal core, respectively, the terminal portion And converts the voltage and current applied to the line between the load and the load unit to a predetermined level, and insulates the line from the integrated power meter and applies the analog voltage and current to the A / D converter. And a current detector; An A / D converter for converting the voltage and current applied from the voltage and current detector in an analog form into a digital form and transmitting the digital data signal to a controller; A data storage unit for storing a power amount calculation program and storing accumulated power amount data in which a current amount of used power and a total amount of used power are accumulated and calculated; A timer unit for outputting time information and transmitting the time information to the control unit; Receives time information from the timer, receives the voltage and current digitally converted from the A / D converter and operates an integrated power meter according to the voltage, and uses the current by using the voltage, current, and time information. Calculates the amount of power and calculates a new integrated power amount accumulated by the total amount of power used up to now using the conventional integrated power amount stored in the data storage unit and the current power amount and the new integrated power amount to the data storage unit A control unit which stores the stored signal and applies a control signal to the power amount driving unit to display the power amount display unit; A power amount driver for controlling a driving state of the power amount display unit by receiving a control signal from the controller; A power amount display unit including a current power consumption display unit for displaying the current power consumption calculated by the control unit according to the control signal from the power drive unit, and an integrated power amount display unit for displaying the integrated power amount accumulated cumulatively used up to now ; Integrated power meter having a magnetic core, characterized in that consisting of. delete The method of claim 1, The core is composed of any one of nanocrystalline alloy core, amorphous alloy core, ferrite core, metal core, The material of the nano-crystalline alloy core is Fe-Si-B-Nb-Cu-based, Fe-Zr-B-based iron-based nano-grain alloy, The material of the amorphous core is any one of Co-Fe-Si-B-based cobalt-based, Fe-Si-B-based iron, The material of the ferrite core is any one of Ni-Zn-based, Ni-Cu-Zn-based, Mg-Zn-based ferrite, The material of the metal core is any one of Permalloy, Supermalloy, Mo Permalloy, Sendust, Iron powder, and Si-steel. delete delete The method of claim 1, The power amount display unit and the current power consumption display unit for displaying the current power consumption calculated by the control unit; Integrated power meter having a magnetic core, characterized in that the total amount of power used up to now comprises an integrated power amount display unit for displaying the cumulatively calculated integrated power.

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