KR101759932B1 - An estimating method for electric power consumption of an electric device - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of calculating power consumption of an electrical product, and more particularly, to a method of easily calculating power consumption of each electrical product.
The present invention relates to a method of manufacturing an electric appliance, comprising the steps of: (a) electric power is supplied to the electric product to operate the electric product; (b) determining in what operating mode the electrical product operates; (c) reading power consumption data according to operation of the operation mode of the electrical product; (d) calculating the power consumption of the electrical product in consideration of the power consumption data and the operating time of the electrical product.

Description

[0001] The present invention relates to an electric power consumption measuring apparatus,

The present invention relates to a method of calculating power consumption in each electric appliance, and more particularly to a method of calculating the total power consumption of an appliance in consideration of power consumption and time corresponding to an operation mode of the appliance, The present invention relates to a method for estimating power consumption of an electrical product by measuring a voltage and a current flowing into a converter.

Electric power for operating electrical appliances such as household appliances used at home or office equipment used in offices is generally supplied through a power plant operated by KEPCO, a transmission line, and a wiring line in this order Feature.

It is a central power source rather than a distributed power source. It has a radial structure spreading from the center to the periphery, and is characterized by a one-way supplier center rather than a consumer center.

In addition, the technology base is analog or electro-mechanical, has to be manually restored in case of an accident, and the equipment must also be manually restored.

The price information of electricity can not be known in real time, but it can be seen only through the power exchange, and because the price system is also a fixed price system, incentives such as incentives for consumers through price changes can not be used There was also a problem.

In order to solve these problems and improve energy efficiency, researches on smart grids (smart grids) are actively underway.

Smart grid refers to the next generation power system and its management system implemented through the fusion and combination of modernized power technology and information and communication technology.

As mentioned above, while the current grid is a centralized, producer-controlled vertical, centralized network, the Smart Grid is less focused on suppliers and has horizontal, collaborative It is a distributed, distributed network.

In the smart grid, the Smart Grid is sometimes referred to as the "energy Internet," because all electrical equipment, power storage, and distributed power are networked to enable interaction between the consumer and the supplier.

In order for such a smart grid to be implemented in the position of a power user such as a home or a building, a network in which individual appliances and a plurality of household appliances are connected should be bi-directionally communicated with the power source and the power information The need for

In the conventional electric power grid in the home, the amount of electric power consumed in the entire household was measured without measuring the amount of electric power consumed by each individual electric appliance, and the electric power charge was calculated based on the measured power consumption. However, Information on the amount of electricity consumed by the product and the electricity charges spent on the operation of each of the electric appliances have been highlighted as data having important meaning to consumers.

In other words, the user can grasp the power consumption status of each of the electric appliances he owns in real time. Meanwhile, in the so-called "peak on time" period in which the electric power rate is high, Because of the need to adjust to.

An object of the present invention is to provide a method for estimating power consumption of an electrical product which can easily calculate the amount of power consumption in each electrical product.

According to an aspect of the present invention, there is provided a method of operating an electronic product, the method comprising: (a) (b) determining in what operating mode the electrical product operates; (c) reading power consumption data according to operation of the operation mode of the electrical product; (d) calculating the power consumption of the electrical product in consideration of the power consumption data and the operating time of the electrical product.

Wherein the step (c) reads the power consumption data stored in the memory unit connected to the control unit for controlling the operation of the electronic product,

Wherein the power consumption data is stored in an average power consumption table format according to an operation mode and an operation condition of the electrical product.

Wherein the step (c) comprises: reading power consumption data corresponding to a current operation mode of the appliance in the average power consumption table;

And adding the additional power consumption value according to the parameter value corresponding to the aged state of the electrical product to the read power consumption data to calculate the final power consumption value.

(e) reporting the calculated power consumption value of the electrical product to the control unit of the electrical product.

Further comprising an energy management device or smart meter connected to the electrical product,

And transmitting the power consumption value reported to the controller to the energy management device or the smart meter.

(f) displaying a power consumption value corresponding to the power consumption value and the power consumption value reported to the control unit on a display unit provided in the electric appliance.

(g) measuring an amount of power consumed by the DC power source that is input to the inverter or converter provided in the electrical product to calculate the amount of power consumed by the electrical product.

In the step (g), when the inverter is mounted on the electric product, the step of calculating the electric energy consumption of the electric product includes: Measuring a voltage of a DC power source that is input to the inverter; Measuring a current of a DC power source drawn into the inverter; Multiplying the voltage by the current to calculate a power amount; And the final power consumption is calculated by reflecting the duty value of the electric appliance to the calculated electric energy.

In the step (g), when the converter is mounted on the electrical product, the step of calculating the amount of power consumption of the electrical product includes: Measuring a voltage of a DC power source drawn from the converter; Measuring the current of the DC power source drawn into the converter; And multiplying the voltage by the current to calculate a power amount.

(A) a step in which an electric product is supplied with electric power to operate the electric product; (B) measuring a voltage value and a current value of an inverter or a converter provided in the electric appliance; (C) calculating the amount of power consumed in the electrical product by combining the voltage value and the current value measured by the inverter or the converter.

In the step (B), when the inverter is mounted on the electrical product, the step of calculating the amount of power consumption of the electrical product includes: Measuring a voltage of a DC power source that is input to the inverter; Measuring a current of a DC power source drawn into the inverter; Multiplying the voltage by the current to calculate a power amount; And the final power consumption is calculated by reflecting the duty value of the electric appliance to the calculated electric energy.

In the step (B), when the converter is mounted on the electrical product, the step of calculating the amount of power consumption of the electrical product includes: Measuring a voltage of a DC power source drawn from the converter; Measuring the current of the DC power source drawn into the converter; And multiplying the voltage by the current to calculate a power amount.

The step of measuring the voltage in the converter or the inverter is characterized in that the DC voltage in the converter or the inverter circuit is stepped down or divided by a predetermined resistor and then the lowered voltage is measured.

According to the present invention, it is possible to measure the amount of electric power consumed by each electric appliance, and it is possible to economically operate the electric appliance based on the measured amount of consumed electric power.

First, the power consumption data corresponding to each operation mode of the electrical product is tabulated in the memory connected to the control unit, the power consumption data corresponding to the current operation mode is extracted, and the power consumption of the electrical product is calculated by combining the data with the operation time .

In addition, the parameter related to the change of power consumption due to the aging of the electric appliance is reflected in the power consumption calculation, so that more accurate power consumption can be calculated.

 In parallel with the above-described method, the voltage and the current in the converter or the inverter are measured, and the electric power consumption of the electric product is calculated

Figure 1 is a schematic diagram of a smart grid.
2 is a schematic diagram of a power management network at home and abroad.
FIG. 3 is a control block diagram of a power management network in and out of a home.
4 is a power consumption data table for each mode of operation of the refrigerator and the air conditioner.
Fig. 5 is a power consumption data table for each mode of operation of the washing machine.
Figure 6 is a graph of the change in power tariff over time.
7 is a schematic diagram of a DC / AC inverter.
8 is a schematic diagram of a DC / DC converter.
9 is a data communication flowchart for calculating the amount of power consumption.
10 is a flowchart of a method of calculating the amount of power consumption of an electrical product using the power consumption data table for each operation mode.
11 is a flowchart of a method for calculating the power consumption of an electrical product using voltage and current of an inverter or a converter.
12 is a front view of the energy management apparatus.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of a smart grid. The smart grid includes a power plant generating electricity through thermal power generation, nuclear power generation, or hydroelectric power generation, and a photovoltaic power generation plant and a wind power generation plant using solar power or wind power .

The thermal power plant, nuclear power plant or hydroelectric power plant transmits electric power to the electric power plant through a transmission line, and electric power is sent to the substation in the electric power plant so that electric power is distributed to the consumer such as the home or the office.

Electricity generated by renewable energy is also sent to the substation and distributed to each customer. Electricity transmitted from the substation is distributed through the electric power storage device to the office or each household.

Even in the home using a home network (HAN), it is possible to produce electricity by itself through the fuel cell mounted on sunlight or PHEV (Hybrid Electric Vehicle, Plug in Hybrid Electric Vehicle) The remaining electricity can be returned to the outside.

In the office or home, a smart measuring device is provided to grasp real-time power and electric charges used in each customer. Through this, the user recognizes the current amount of electric power and the electric charge, Can be considered.

In addition, since the power plant, power station, storage device, and consumer are two-way communication, it is necessary to notify the storage device, the power station and the power station of the situation of the demanding place separately from the one- Electric distribution can be performed.

Meanwhile, in the above-mentioned smart grid, an Energy Management System (EMS) and an Advanced Metering Infrastructure (AMI), which measure real-time power management of demanders and real-time power consumption, It is responsible for the role of

The measurement device under the Smart Grid is based on an open architecture and is an underlying technology to integrate consumers. It provides consumers with the ability to use electricity efficiently, and power suppliers to detect system problems and efficiently operate the system do.

Here, open architecture is a standard that allows all electric devices to be connected to each other regardless of which manufacturer manufactures the electric devices in a smart grid system, unlike a general communication network.

Thus, the metering devices used in the Smart Grid enable consumer-friendly efficiency concepts such as "Prices to Devices ".

That is, the real-time price signal of the electric power market is relayed through the energy management device (EMS) installed in each home and the smart meter, and the energy management device (EMS) and the smart meter communicate with each electric product, Energy and cost can be saved by recognizing the electric power information of each electric appliance by the EMS or the smart meter and performing the power information processing such as the setting of the consumed electric power or the electricity rate limit based on the electric power information.

Meanwhile, it is also possible to collect status information on the operation mode of each electric appliance in each of the electric appliances, receive environmental information such as electric power information or temperature or humidity received from the energy management device (EMS) or the smart meter, A smart control device is provided that reflects the operation control of the product.

The control for each electrical product can be performed by communication between the smart control device, the energy management device (EMS), and the smart meter.

Here, the energy management apparatus (EMS) performs bidirectional communication with the local energy management apparatus (Local EMS) and the local energy management apparatus (EMS) used in the office or the home to collect information collected from the local energy management apparatus (Central EMS) that processes the energy.

Since the smart grid enables real-time communication of power information between the supplier and the consumer, it is possible to realize a "real-time power grid reaction ", thereby reducing the high cost required to meet the peak demand.

FIG. 2 shows a power management network 10 in a home, which is a major demand source of the smart grid.

The power management network 10 includes a smart meter 20 capable of receiving electric power information such as electric power and electric power charges supplied to each home from the outside, (EMS) 30 connected to the smart meter 20 for communicating with and controlling the operation of one or more appliances.

Here, the energy management device (EMS) 30 includes a screen 31 for displaying the current power consumption state and external environment (temperature, humidity), and includes an input unit 32 and the like It is preferable that the terminal is provided in the form of a terminal.

The EMS 30 is again connected to an electric appliance such as a refrigerator 101, a washing machine and a dryer 102, an air conditioner 103, a TV 105 or a cooking appliance 104 through a home network (100), and performs bidirectional communication with them.

Communication within the house can be done via wire or wireless, such as a PLC.

Further, it is preferable to arrange each electric appliance so as to be connected to other electric appliances so as to be able to communicate with each other.

Inside each electric product 100 (101-105), there are provided an inverter 200 for converting the DC power supplied from outside the electric product 100 supplied from the outside into an AC power source, a converter 300 for boosting or reducing the DC power, .

Generally, in the case of a large electric appliance, such as a refrigerator 101 having a compressor or a motor with a large output, or a washing machine 102 or an air conditioner 103, an AC power source is used to control the speed of the fan motor, The inverter 200 is provided inside thereof. .

In the case of an electric appliance such as the computer 104 or the TV 105, since a motor having a large output is not provided and a constant-sized power source is supplied for a predetermined time, the DC power supplied from the outside is stepped- A converter 300 is provided therein.

The inverter obtains an AC power by alternately switching the DC power source to an insulated gate bipolar transistor (IGBT) to change the nature of the power source. The power source performs an on / off operation according to the carrier frequency of the power source, It supplies AC power to the product.

In the case of a converter, the step-up or step-down of the voltage of the DC power input is performed by using a switch. When the voltage is stepped down, the duty ratio, which is the ratio of the closed time of the switch to the chopping period, So that the output voltage is lower than the input voltage. When the voltage is increased, the switch is turned on / off so that the energy is accumulated in the inductor or the stored energy is transferred in the load direction.

On the other hand, the power supply to the household is provided with a general power generation equipment (thermal power, nuclear power, hydropower) or a grid power supply such as a power generation company using renewable energy (solar, wind, geothermal) (50).

In addition, an auxiliary power source 52 such as a renewable energy generation facility 51 such as solar power generation or wind power generation, a storage battery provided in the home or a fuel cell of an automobile is also a power supply source.

Generally, the system power supply 50 supplies AC power, and DC power is supplied for renewable energy or auxiliary power.

Typically, the power sources 50, 51, 52 are coupled to the smart meter 20 and the energy management device 30 to provide power information to them.

The power of the electric power sources 50, 51, and 52 is supplied into the home, and supplies electric energy to each electric appliance 100.

3, the power management network 10 in the home is connected to the system power supply 50 for supplying the renewable energy 51 or the auxiliary power supply 52 for supplying the DC power and the AC power, do.

The power supply sources 50, 51 and 52 are connected to the smart meter 20 and the energy management device 30 and are connected to a refrigerator 101, an air conditioner 103, (105). ≪ / RTI >

The power supplied to the house is DC power and AC power. In the case of the DC power, the power is supplied to the inside of the house by being adjusted to the household voltage such as 220V or 380V from the outside.

In the case of an AC power source, the power source is drawn into the house and converted into DC power by the AC / DC rectifier 400. In the case of an AC power source which has been drawn into the house, it can not be directly used in an electric appliance such as the refrigerator 101 or the air conditioner 103 that uses the AC power source.

In the case of the AC / DC rectifier 400, the AC / DC rectifier 400 generally comprises six switches and a rectifying part composed of six body diodes connected in parallel with the respective switches, and a smoothing capacitor.

Here, the six switches are generally power devices (IGBTs), and the switching frequency is preferably 5 to 20 kHz. On the other hand, it is preferable that the body diode connected in parallel with the six switches is composed of a diode having excellent reverse recovery characteristics so that switching loss is small even in fast switching.

On the other hand, the smoothing capacitor smoothes the voltage output through the rectifying part to a DC voltage, and supplies the smoothed current voltage to the inverter 200 provided in each electric appliance.

The large household appliances such as the refrigerator 101 and the air conditioner 103 among the electric appliances 100 connected to the AC / DC rectifier 400 are connected to a load such as a high-output motor for driving the compressor or the fan 101e, 103e.

The internal configuration of the refrigerator 101 or the air conditioner 103 includes controllers 101a and 103a and a memory connected to the controller 101a and storing power information such as a power consumption value according to the operation mode Communication units 101c and 103c for communicating with the smart meter 20 or the EMS 30 to receive electric power information from them or transmit electric power information of the electric appliance, Display sections 101d and 103d for displaying a state according to the operation mode, and input sections 101f and 103f for the user to input a command.

The loads (101e, 103e) include an inverter motor whose number of revolutions can be changed according to each operation mode. Such an inverter motor operates a compressor of a refrigerator or an air conditioner, or a cooling fan of a refrigerator or a blowing fan of an air conditioner.

In the case of a washing machine or a dryer, it also rotates the rotary drum.

Meanwhile, the loads 101e and 103e may be power consumption elements other than the motor.

The inverter 200 is connected to the loads 101e and 103e and the inverter 200 is connected to the controllers 101a and 103a so that the loads 101e and 103a are controlled according to commands from the controllers 101a and 103a. 103e.

The inverter 200 can adjust the magnitude and frequency of a voltage or a current applied to the loads 101e and 103e according to a command of the controllers 101a and 103a or a command input by a user.

On the other hand, in the case of electric appliances such as the TV 105 or the PC, since a high-output motor such as an air conditioner or a refrigerator is not necessary, it is driven by being supplied with DC power.

However, in the case of electric appliances such as the TV 105 and the PC, since it is driven by 24 V or 12 V, it is impossible to use the DC power inputted into the home as 220 V or 380 V as it is. Therefore, it is necessary to reduce the DC power supplied from the outside of the electric appliance by being provided inside the converter 300.

The structure of the TV 105 and the PC includes a controller 105a, a memory 105b for storing power consumption information according to the operation mode, and a memory 105b for storing information on power consumption of the smart meter 20 or the EMS A communication unit 105c for transmitting and receiving information to and from the communication apparatuses 105a and 105c, and an input unit 105f for inputting a user command.

A load 105e such as a display device constituting a screen composed of an LCD, a PDP or a CRT is provided on the TV 105 or the PC. The load 105e is connected to the converter 300, And then supplied to the load 105e.

FIG. 4 is a power consumption data table stored in a memory of a refrigerator and an air conditioner, wherein the operating mode of the refrigerator is changed according to a target temperature of the freezing room and a target temperature of the refrigerator.

That is, the lower the target temperatures of the freezer compartment and the refrigerating compartment, the greater the operating rate or duty cycle of the compressor and the refrigerant fan, and accordingly the power consumption increases. Especially,

As the target temperature changes, the operation mode also changes, and the change in the average power consumption according to the change of the operation mode is the same in the air conditioner. Particularly, in the case of an air conditioner, not only the duty of the compressor but also the fan speed of the indoor unit or the outdoor unit is also a factor for increasing or decreasing the power consumption, so the power consumption varies depending on the target temperature and the fan speed of the room.

Meanwhile, as shown in FIG. 5, in the case of the washing machine, the power consumption differs in each operation mode, that is, when a quick washing course, a standard course, a washing course, a standard course, and a drying course are performed.

That is, the total washing time, the number of revolutions of the motor of the rotary drum, and the operation of the heater for drying or the washing water heating vary depending on each washing course, so that the average power consumption of the washing machine is changed.

As shown in FIGS. 4 and 5, since the power consumption according to the specific operation mode of each electric appliance can be slightly different, the electric appliance maker can make each electric appliance several tens to several hundreds of times It is preferable that the operation is carried out and the power consumption value according to the operation is averaged and stored in the memory.

In the case of calculating the power consumption value, it is preferable to consider the factors related to the increase in the yearly power consumption of the electrical product. Even if the same operation mode is used, since the power consumption between the new product and the product that has been modeled for several years will be different, the power consumption value according to each operation mode of the product It is preferable to calculate the final power consumption value by summing the power consumption values.

That is, in the average power consumption table as shown in Figs. 4 and 5, the power consumption data according to the operation mode of each electric appliance is read, and the total power consumption value is calculated in consideration of the power consumption data and the operation time, You can calculate your electricity bill based on your base.

As shown in Fig. 6, in the variable rate system in which the electric power charge varies with time, the total electric power consumption value according to the operation mode of each electric appliance is calculated using the power consumption table described above, The final power bill can be calculated by multiplying it with the charge data.

A method of calculating the total power consumption value using the power consumption data table is a main method, and an auxiliary power consumption value calculation method which can support this method is a method of calculating the total power consumption value by using a table The voltage and current of the DC power source drawn from the inverter and the converter can be measured and performed.

As described above, the inverter or the converter is provided in the electric product, and since the power supplied from the inverter or the converter drives the electric product, the inverter or the converter serves as a kind of gateway in electric power supply of the electric product.

Therefore, if the voltage and the current of the DC power source passing through the inverter or the converter are measured, the power value supplied to the electric appliance and consumed can be measured.

7 is a schematic diagram of an inverter 200 according to the present invention.

DC power is supplied to the input terminal of the inverter 200 as described above, and AC power is supplied to the output terminal of the inverter 200 to be supplied to the load 101e.

The inverter 200 includes a power IC 201 and the power IC is composed of a complementary metal oxide semiconductor. The power IC 201 The DC power is changed to the AC power by the operation of the alternate switch 202. [

The alternate switch 202 alternately turns on and off the A point and the C point.

Since it is difficult to measure the AC power from the output terminal of the inverter 200 because the voltage and the current change with time, the DC power supplied to the input terminal of the inverter 200 does not change with time, (V _in ) and current (I _in ) input to the input terminal of the electronic device 200 are measured and multiplied, and then the total power consumption is calculated by reflecting the duty value of the electronic product.

It is impossible to directly measure the voltage of the input terminal of the inverter 200 because it is 220V or 380V and the resistors R1 and R2 are applied to the two power lines arranged in the power IC 201 And measures the voltage divided or reduced by the resistors (R1, R2).

In the figure, the resistors R1 and R2 are connected to points A and B, respectively.

Here, it is preferable that the measurable voltage by the resistors R1 and R2 is about 0 to 5V.

The input voltage Vin and the input current Iin are both measured by a power IC and reported to the controller 101a. Therefore, the control unit 101a can calculate the power consumption of the electrical product in consideration of the input voltage Vin, the input current Iin, and the operation time and duty value of the electrical product.

Meanwhile, the control unit 101a is connected to the memory 101b, calculates the power consumption value calculated in the above-described process, continuously accumulates the calculated power consumption value in the power consumption table, and updates the average power consumption data have.

The average power consumption data may be compared with the power consumption measured by the inverter 200 to determine whether the electric appliance is abnormal.

8 is a schematic view of a converter 300 according to the present invention.

DC power is input to the input terminal of the inverter 300 as described above, and the transformed DC power is outputted from the output terminal, and is supplied to the load 105e.

The converter 300 also includes a power IC 301. The DC power input by the alternate switch 302 included in the power IC 301 is stepped up or stepped down.

The alternating switch 302 alternately turns on and off the E point and the F point.

Since the nature of the power output through the switch of the converter 300 is DC, it can be measured. However, since the output voltage _Vout is usually 5V or more, the resistors R3 and R4 are connected to the power line arranged in the Power IC 301, .

Here, it is also preferable that the voltage that can be measured by the resistors R3 and R4 to be measurable is about 0 to 5V.

The output voltage V _out and the input current I _in are both measured by a power IC and reported to the controller 105a. Therefore, the control unit 101a can calculate the power consumption of the electrical product in consideration of the output voltage V _out , the input current I _in , and the operating time of the electrical product.

The controller 105a may be connected to the memory 105b to calculate the power consumption value calculated in the above-described process, and may continuously accumulate the power consumption value in the power consumption table to update the average power consumption data.

The average power consumption data and the power consumption measured by the converter 300 may be compared to determine whether the electric appliance is abnormal.

As shown in Fig. 9, the communication flow related to the recognition of the power consumption amount information in the present invention is as follows.

The energy management device (EMS) 30 provides information about the electric power source in the direction of the electric appliance 100, or electric power charge information under the variable rate.

It can also provide operating mode information on how the operating mode of each electrical product needed in the current power bill should be performed. That is, the power saving mode command of the electric appliance is issued at a time when the electric power charge becomes equal to or higher than a certain standard, and the normal operation mode is performed when the electric power charge becomes lower than a certain standard.

The electric appliance 100 transmits to the energy management device (EMS) 30 whether or not the operation mode provided by the energy management device (EMS) 30 has been executed or other operation mode is executed do.

In addition, information related to the electrical product and power consumption information are also provided to the energy management device (EMS) 30. [

Referring to a specific communication state related to the recognition of the amount of power consumption, the energy management device (EMS) 30 requests power consumption transmission in the direction of the electrical product 100 (S901).

The request is received by the communication unit 100c of the electrical product 100, and the request is transmitted to the control unit 100a.

In response to such a request, the controller 100a may calculate the amount of power consumption by reading the voltage, the current, and the duty value, if necessary, from the inverter 200 or the converter 200, and then combining them.

In addition to checking the amount of power consumption of the electrical product 100 through the inverter 200 or the converter 300 as in step S902, the control unit 100a may calculate the amount of power consumption per operation mode stored in the memory 100b So that the amount of power consumption corresponding to the current operation mode can be extracted.

The communication unit 100c of the electrical product 100 is a step of transmitting to the energy management device (EMS) 30 the power consumption of the electrical product calculated by the above-described procedure in the control unit 100a (S903 ).

Hereinafter, with reference to the accompanying drawings, a more specific method of calculating the amount of power consumption will be described.

As shown in Fig. 10, first, the electric appliance is operated (S1001), and the operation mode of the electric appliance currently being operated is determined (S1002).

Then, the power consumption data corresponding to the current operation mode is extracted from the memory connected to the control unit (S1003). Then, the total power consumption is calculated by combining the extracted power consumption data and the operating time of the current electrical product (S1004).

The communication unit of the electric appliance receives the electric power rate data from the outside (S1005), and the controller of the electric appliance calculates the electric power consumption rate according to the total electric power consumption amount by using the received electric power rate data, And displays it on the display unit (S1006).

In step S1007, the energy management device EMS determines whether there is a data transmission request for the amount of consumed electric power and the electric power consumption charge in step S1007. In this case, the related data is transmitted to the energy management device EMS in step S1108.

11 is a view for explaining a method of recognizing an amount of power consumption of an electrical product by using a converter or an inverter, unlike FIG.

As shown in Fig. 11, first, the electric appliance operates (S1101), and an inverter or a converter for supplying AC power or DC power to the electric appliance operates (S1102).

The power IC provided in the inverter or the converter transmits the DC voltage value and the current value in the inverter or the converter to the control unit (S1103, S1104).

In the case of the inverter, the duty value of the electrical product is transmitted to the control unit (S1105).

The control unit calculates the total amount of power consumption using the output DC voltage value and the current value in the converter, or calculates the total amount of power consumption by combining the input DC voltage value, the current value, and the duty value in the inverter (S1106).

The communication unit of the electrical product receives the electricity rate data from the outside (S1107), and the control unit of the electrical product calculates the electricity consumption rate according to the total electricity consumption amount using the received electricity rate data, And displays it on the display unit (S1108).

Meanwhile, it is determined whether there is a data transmission request for the power consumption amount and the power consumption charge in the energy management apparatus (EMS) (S1109), and in that case, the related data is transmitted to the energy management apparatus (EMS) (S1110).

As shown in FIG. 10 or 11, when the total power consumption or power consumption charge of each of the electrical appliances is transmitted to the energy management apparatus (EMS) 30, as shown in FIG. 12, Each electric power consumption amount with time in the electric appliance is displayed, and the current electric power charge is displayed.

20: Smart meter 30: Energy management device (EMS)
100: electric appliance 100a; 101a ;; 103a: 105a:
100b; 101b ;; 103b; 105b: memory 200: inverter
201; 301: Power IC 300: Converter

Claims (13)

A step in which the electric product is supplied with electric power to operate the electric product;
Determining in what operating mode the electrical product operates;
Reading power consumption data according to operation of the operation mode of the electric appliance;
Calculating a power consumption value of the electrical product in consideration of the power consumption data and the operation time of the electrical product;
Reporting the calculated power consumption value of the appliance to the controller of the appliance; And
Displaying a power consumption value corresponding to the power consumption value and the power consumption value reported to the control unit on a display unit provided in the electric appliance;
And calculating the power consumption of the electric appliance. The method according to claim 1,
Wherein the step of reading the power consumption data reads the power consumption data stored in the memory unit connected to the control unit for controlling the operation of the appliance,
Wherein the power consumption data is stored in the form of an average power consumption table according to an operation mode and an operation condition of the electric appliance. 3. The method of claim 2,
The step of reading the power consumption data
Reading power consumption data corresponding to a current operation mode of the electrical product from the average power consumption table;
And adding the additional power consumption value according to the parameter value corresponding to the aged state of the appliance to the read power consumption data to calculate the final power consumption value. delete The method according to claim 1,
Further comprising an energy management device or smart meter connected to the electrical product,
And transmitting the power consumption value reported to the controller to the energy management device or the smart meter. delete The method according to claim 1,
Further comprising the step of measuring an amount of electric power consumed by the electric appliance by measuring an amount of electric power generated by an inverter or a DC power supplied to the converter provided in the electric appliance. 8. The method of claim 7,
When the inverter is mounted on the electrical product in the step of calculating the power consumption of the electrical product,
The step of estimating the power consumption of the electrical product may include:
Measuring a voltage of a DC power source that is input to the inverter;
Measuring a current of a DC power source drawn into the inverter;
Multiplying the voltage by the current to calculate a power amount;
And calculating a final power consumption amount by reflecting the duty value of the electric product to the calculated electric energy amount. 8. The method of claim 7,
When the converter is mounted on the electrical product in the step of calculating the power consumption of the electrical product,
The step of estimating the power consumption of the electrical product may include:
Measuring a voltage of a DC power source drawn from the converter;
Measuring the current of the DC power source drawn into the converter;
And calculating the electric power by multiplying the voltage by the electric current. A step in which the electric product is supplied with electric power to operate the electric product;
Measuring a voltage value and a current value that are drawn into or out of an inverter or a converter provided in the electrical product;
And calculating the amount of power consumed in the electric appliance by combining the voltage value and the current value measured by the inverter or the converter,
When the inverter is mounted on the electric product in the step of measuring the voltage value and the electric current value,
The step of calculating the power consumption amount of the electric appliance includes:
Measuring a voltage of a DC power source that is input to the inverter;
Measuring a current of a DC power source drawn into the inverter;
Multiplying the voltage by the current to calculate a power amount; And
And calculating a final power consumption amount by reflecting a duty value of the electric appliance to the calculated electric energy amount. delete delete delete

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