JP2006020390A - Power conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To confirm the operating state of a power conditioner or the electric energy being generate from a solar cell varying at any time easily and locally. <P>SOLUTION: Operating state of a power conditioner 12 and electric energy being generate from a solar cell 11 vary at any time and it is interesting for a user. A remote controller 17 obtains information of the output power (generated power) or integrated electric energy of an inverter 21 (solar cell 11) through communication with an linked inverter unit 16, or obtains information of sold power, purchased power, sold electric energy and purchased electric energy through communication with a sensor unit 14 and displays the operating state of the power conditioner 12 and the electric energy generated from the solar cell 11 on the screen of a liquid crystal module 57 in a display unit 18 based on these information. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a power conditioner that controls a DC power supply such as a solar battery in conjunction with a power supply from a commercial power source.

  In this type of power conditioner, the power generated by the solar battery is preferentially used and the power of the commercial power supply is used as an auxiliary, so that the power consumption of the commercial power supply can be reduced. Further, when the amount of power generated by the solar cell exceeds the amount of power consumed in the home, the surplus generated power can be reversely flowed to the commercial power source and sold to the power company.

  On the other hand, since the generated power of the solar cell changes according to the amount of solar radiation, it is difficult to predict this generated power amount, and for the user, the operating condition of the power conditioner and the generated power amount of the solar cell It is also interesting to know these. For this reason, information such as the operating state of the power conditioner and the amount of power generated by the solar cell is often displayed.

For example, in the apparatus described in Patent Document 1, a solar battery, a power inverter that converts the generated power of the solar battery into AC power, or supplies a commercial power supply as an auxiliary power, and operates the power inverter A controller or the like is provided, and various types of information are displayed on a display unit attached to the interconnection inverter. Such information includes, for example, the operating state of the power conditioner, the instantaneous generated power of the solar battery, the accumulated power generation amount, and the like.
JP 2000-3224 A

  By the way, the interconnection inverter is installed outdoors as one unit, and the controller and display unit are installed indoors as other units, thereby enabling the controller operation and the display content of the display unit to be confirmed indoors. There is also.

  However, conventionally, the display unit is fixedly arranged together with the controller. For this reason, when the user wants to know the operating condition of the power conditioner, the amount of power generated by the solar battery, etc., the user needs to move to the installation location of the controller. It was inconvenient to check the amount of power generated.

  Therefore, the present invention has been made in view of the above-described conventional problems, and is a power conditioner capable of easily confirming, at hand, the operating state of the power conditioner that changes from time to time, the amount of power generated by the solar cell, and the like. The purpose is to provide.

  In order to solve the above-described problems, the present invention provides a power supply controller that controls power supply in a power conditioner that controls power supply from a distributed power supply in conjunction with power supply from a commercial power supply, A controller connected to the supply control unit and a display unit for transmitting and receiving information to and from the controller by wireless communication and displaying the information are provided.

  In the present invention, the display unit is detachably attached to the controller.

  Furthermore, in the present invention, when the display unit is attached to the controller, the display unit transmits and receives information to and from the controller by wired communication.

  In the present invention, the display unit displays the amount of generated power.

  Furthermore, in the present invention, the controller displays the operating state of the power conditioner.

  In the present invention, the controller stores various types of information displayed on the display unit, and transmits information according to a request from the display unit to the display unit.

  Furthermore, the present invention includes a charging unit that is separate from the controller, is detachably mounted with a display unit, and charges the power supply of the mounted display unit.

  According to the power conditioner of the present invention, the controller is connected to the power supply control unit that controls the power supply, and acquires information such as the operating state of the power conditioner and the amount of generated power from the power supply control unit. Can do. The display unit can send and receive information to and from the controller by wireless communication and display the information. Therefore, the display unit can receive information from the controller such as the operating state of the power conditioner and the amount of generated electric power and display it, regardless of where it is moved. For this reason, if the user carries the display unit, the operating state of the power conditioner, the amount of generated power, and the like that change from time to time can be easily confirmed at hand. In particular, when the power supply control unit is installed outdoors, a portable display unit is extremely convenient.

  Further, since the display unit is detachably attached to the controller, it can also be attached to the controller. At this time, transmission and reception of information between the controller and the display unit may be performed by wired communication. In wired communication, communication between the controller and the display unit can be performed more reliably and faster than wireless communication.

  Furthermore, since the controller displays the operating state of the power conditioner, the operating state of the power conditioner can be known from the display of the controller even if the display unit is not displayed due to a power-off of the display unit or the like. .

  Further, the controller accumulates various types of information displayed on the display unit, and transmits information corresponding to a request from the display unit to the display unit. As a result, a large amount of information can be collected in the controller, and only necessary information can be transmitted to the display unit for display. Further, if the controller is deferred, the commercial power supply can always be supplied and the secondary battery for backup can be always charged, which is advantageous for storing information.

  Furthermore, since the charging unit for charging the power supply of the display unit is provided, the usability of the display unit can be improved by installing the charging unit in a place familiar to the user.

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

  FIG. 1 is a block diagram showing a configuration of a photovoltaic power generation system to which a first embodiment of a power conditioner of the present invention is applied. This solar power generation system includes a solar cell 11, a power conditioner 12, a distribution board 13, and a sensor unit 14, and is connected to a commercial power supply 15 through the distribution board 13.

  The power conditioner 12 includes an interconnection inverter unit 16 installed outdoors, and a remote controller 17 and a display unit 18 installed indoors. The interconnection inverter unit 16 inputs the generated power of the solar battery 11, converts this generated power into AC power, and outputs this AC power to the distribution board 13. The remote controller 17 is operated by the user to remotely control on / off of the interconnection inverter unit 16 or creates information indicating the operating state of the power conditioner 12 and transmits this information to the display unit 18. To do. The display unit 18 is detachably attached to the remote controller 17 and displays information received from the remote controller 17.

  The distribution board 13 links the AC power of the grid inverter unit 16 to the home distribution line and supplies it. The power generation of the solar battery 11 is preferentially used, and the power of the commercial power supply 15 is supplementarily used, so that the power consumption of the commercial power supply 15 is reduced. Further, when the amount of power generated by the solar cell 11 exceeds the amount of power consumed in the home, the surplus generated power flows backward to the commercial power source 15 and is sold to the power company.

  FIG. 2 is a block diagram showing a configuration of the interconnection inverter unit 16. The interconnection inverter unit 16 includes an inverter 21, an inverter drive circuit 22, a control circuit 23, and a power supply circuit 24.

  The inverter 21 includes a switching element such as an IGBT (Insulated Gate Bipolar Transistor), a filter circuit, and the like. The inverter 21 converts the DC generated power of the solar cell 11 into AC power by PWM (Pulse Width Modulation) control. Electric power is output to the distribution board 13.

  The inverter drive circuit 22 receives the PWM signal generated by the control circuit 23 and drives the switching element of the inverter 21 on and off based on the PWM signal.

  The power supply circuit 24 converts the AC power of the inverter 21 or the commercial power supply 15 into DC power, and supplies this DC power to the inverter drive circuit 22, the control circuit 23, and the remote controller 17 to operate them. Examples of the circuit system of the power supply circuit 24 include a switching regulator system.

  The control circuit 23 detects the input voltage, the output voltage, the output current, and the like of the inverter 21 with respective detectors (not shown), and controls the inverter 21 based on these voltages and currents, and the power conditioner. Control of the entire 12 is performed. Further, the control circuit 23 calculates the output power (generated power) and the integrated power amount of the inverter 21 (solar cell 11) based on the output voltage, output current, and the like of the inverter 21, and outputs the output power (power generation). Power) and accumulated electric energy are stored in a built-in nonvolatile memory. Further, the control circuit 23 has an interface for performing wired communication with the remote controller 17, and information such as output power (generated power) of the inverter 21 (solar cell 11) and integrated power amount is transmitted to the remote controller 17. Send to.

  FIG. 3 is a block diagram showing the configuration of the remote controller 17.

  The remote controller 17 includes a connector 31 for connecting the sensor unit 14 and the interconnection inverter unit 16, a communication driver 32 for performing wired communication between the sensor unit 14 and the interconnection inverter unit 16 through the connector 31, A connector 33 for connecting the display unit 18, a communication interface 34 for wired communication with the display unit 18 through the connector 33, and a wireless communication module 35 for wireless communication with the display unit 18. A CPU 36 for overall control of the remote controller 17; a ROM 37 for storing programs executed by the CPU 36; a flash memory 38 for storing information received from the sensor unit 14 and the interconnected inverter unit 16; For buff Alternatively, through the RAM 39 used as a work memory, the operation key switch 40, the LED 41 for displaying the operating state of the power conditioner 12, the real time clock 42 for managing and controlling the current time, the real time clock backup battery 43, and the connector 31. The power supply circuit 44 etc. which are connected to the power supply circuit 24 of the interconnection inverter unit 16 are provided.

  The communication driver 32 performs serial communication conforming to, for example, RS-485, and a party line is configured among the remote controller 17, the sensor unit 14, and the interconnection inverter unit 16 by this communication. The wireless communication module 35 performs communication using, for example, “Blue tooth”.

  Further, the CPU 36 obtains information such as selling power, buying power, selling power amount, buying power amount through communication with the sensor unit 14, and outputs the inverter 21 (solar cell 11) through communication with the interconnection inverter unit 16. Information such as electric power (generated power) and accumulated electric energy can be obtained. The CPU 36 obtains these pieces of information every hour and stores these pieces of information in the fresh memory 38 together with the time measured by the real time clock 42.

  FIG. 4 is a block diagram showing the configuration of the display unit 18.

  The display unit 18 is a connector 51 for connecting to the remote controller 17, a communication interface 52 for wired communication with the remote controller 17 through the connector 51, and wireless communication with the remote controller 17. A wireless communication module 53, a CPU 54 for overall control of the display unit 18, a ROM 55 storing a program executed by the CPU 54, data received from the remote controller 17, a communication buffer or a work memory Required for driving the liquid crystal module 57, the liquid crystal module 57 for displaying various information, the liquid crystal controller 58 for driving and controlling the liquid crystal module 57, the V-RAM 59 for storing the display screen of the liquid crystal module 57, and the liquid crystal module 57. An inverter unit 60 that generates and outputs a period signal, an operation key switch 61, a charging circuit 62 connected to the power supply circuit 44 of the remote controller 17 through the connector 51, a secondary battery 63 that is charged by power supply from the charging circuit 62, And a power supply circuit 64 for supplying the power of the charging circuit 62 or the secondary battery 63 to each part.

  FIG. 5 is a perspective view showing the remote controller 17 and the display unit 18. As shown in FIG. 5, the display unit 18 is detachably attached to the remote controller 17. In a state where the display unit 18 is mounted on the remote controller 17, the connector 33 of the remote controller 17 and the connector 51 of the display unit 18 are connected, and wired communication between them is possible. Further, the power supply circuit 44 of the remote controller 17 is connected to the charging circuit 62 of the display unit 18 so that power can be supplied by the power supply circuit 64 and the secondary battery 63 is charged.

  Further, in the remote controller 17, two operation key switches 40a and 40b are provided as the operation key switch 40, and the operation key switch 40a is used for “run / stop switching”, and the operation key switch 40b. Is for “switching between connected and independent operation modes”. For example, when the operation key switch 40a is operated to instruct to run or stop, the instruction is sent from the CPU 36 to the control circuit 23 of the interconnection inverter unit 16, and the control circuit 23 Either the operation or stop of the interconnection inverter unit 16 is performed.

  Further, in the remote controller 17, four LEDs 41a to 41d are provided as LEDs 41 for displaying the operation state of the power conditioner 12, and each LED 41a to 41d corresponds to operation, stop, interconnection, and independence, respectively. To do. CPU36 displays the driving | running state of the power conditioner 12 by selectively lighting, blinking, and extinguishing each LED41a-41d. For example, the LEDs 41a to 41d are displayed in order to display the respective operation states such as the interconnection mode operation, the interconnection mode standby, the interconnection mode stop, the inspection mode, and the power interruption as shown in the chart of FIG. Are selectively turned on, blinked, and turned off.

  In the display unit 18, four operation key switches 61 a to 61 d are provided as the operation key switch 61. The operation key switch 61 a is used for “current / integration switching”, and each of the other operation key switches. The functions 61b to 61d are assigned according to the screen display of the liquid crystal module 57.

  FIG. 7 is a block diagram illustrating configurations of the distribution board 13 and the sensor unit 14. The distribution board 13 includes a main breaker 71 connected to a commercial power source, a plurality of branch breakers 72 connected to a home distribution line, a distribution line 73 connecting the main breaker 71 and each branch breaker 72, and the like. Yes. Here, the AC power of the interconnection inverter unit 16 is output to one branch breaker 72, and this AC power is output to the home distribution line through the other branch breakers 72. Further, the surplus AC power of the interconnection inverter unit 16 (surplus generated power of the solar cell 11) can be reversely flowed to the commercial power source 15 through the main breaker 71 and sold to an electric power company.

  The sensor unit 14 includes a voltage detector 75 that detects the AC power voltage of the interconnection inverter unit 16, a current detector 76 that detects the current of the commercial power supply, and a communication driver 77 for wired communication with the remote controller 17. And a CPU 78 and the like.

  The CPU 78 is traded between the current power company and the user's home based on the AC power voltage of the interconnection inverter unit 16 detected by the voltage detector 75 and the current of the commercial power source detected by the current detector 76. The power, the amount of power, and the like are calculated, and information such as the selling power, the buying power, the selling power amount, and the buying power amount is transmitted to the remote controller 17 through the communication driver 77.

  Now, in this way, in the photovoltaic power generation system, the power generated by the solar battery 11 is preferentially used, and the power of the commercial power supply 15 is supplementarily used to reduce the power consumption of the commercial power supply 15. When the amount of power generated by the solar battery 11 exceeds the amount of power consumed in the home, the surplus generated power is reversely flowed to the commercial power source 15 and sold to the power company.

  Moreover, the operating state of the power conditioner 12, the amount of power generated by the solar cell 11, and the like are changing at any time, which is interesting for the user. Therefore, the remote controller 17 obtains information such as the output power (generated power) of the inverter 21 (solar cell 11) and the integrated power amount through communication with the interconnection inverter unit 16, or sells power through communication with the sensor unit 14. The information on the purchased power, the amount of sold power, the amount of purchased power, etc. is obtained, and based on these information, the operating state of the power conditioner 12, the amount of generated power of the solar cell 11, etc. Is displayed.

  Next, a communication protocol performed between the remote controller 17, the interconnection inverter unit 16, and the sensor unit 14 will be described with reference to FIG.

  This communication protocol basically consists of dialogues with commands and responses. First, the remote controller 17 transmits a command to the interconnection inverter unit 16 and the sensor unit 14. The sensor unit 14 and the interconnected inverter unit 16 transmit a response to the remote controller 17 when the command can be normally received.

  Further, if the remote controller 17 does not return a response until a predetermined time elapses after the command is transmitted or if the returned response is not normal, the remote controller 17 determines a timeout and restarts the communication protocol from the beginning.

  Further, the remote controller 17 transmits commands at regular intervals, and the interconnected inverter unit 16 and sensor unit 14 sequentially transmit responses to the commands at regular intervals.

  In the remote controller 17, the CPU 36 performs a communication protocol through the communication driver 32. In the interconnection inverter unit 16, the control circuit 23 performs a communication protocol. Further, in the sensor unit 14, the CPU 78 performs a communication protocol through the communication driver 77.

  Next, information communicated between the remote controller 17, the interconnection inverter unit 16, and the sensor unit 14 will be described in more detail.

  FIG. 9 exemplifies a format of a command transmitted / received from the remote controller 17 to the interconnection inverter unit 16 and the sensor unit 14.

  This command format indicates either the linked inverter unit 16 or the sensor unit 14 whose head address is the destination, and any of the linked inverter unit 16 or the sensor unit 14 corresponding to this head address is the command. Is returned and a response is returned. In addition to the head address, a command code, a checksum, CR, and the like are included.

  FIG. 10 exemplifies the format of a response sent / received from the interconnection inverter unit 16 to the remote controller 17.

  In the format of this response, the remote controller 17 whose destination address is the start address indicates the remote controller 17 corresponding to this start address. In addition to the head address, a plurality of information, checksum, CR, and the like are included. Each information is the operating state of the power conditioner 12, such as the output power (generated power) of the inverter 21 (solar cell 11), the integrated power amount, and the error code obtained by the control circuit 23 of the interconnection inverter unit 16.

  FIG. 11 shows an example of a response format sent and received from the sensor unit 14 to the remote controller 17.

  Even in the response format, the remote controller 17 whose destination address is the start address indicates the remote controller 17 corresponding to the start address. In addition to the head address, a plurality of information, checksum, CR, and the like are included. Each information is the selling power, the buying power, the selling power amount, and the buying power amount obtained by the CPU 78 of the sensor unit 14.

  FIG. 12 shows a format of another command transmitted / received from the remote controller 17 to the interconnection inverter unit 16 and the sensor unit 14.

  In the format of this command, either of the linked inverter unit 16 and the sensor unit 14 whose head address is the destination is indicated, and either of the linked inverter unit 16 or the sensor unit 14 acquires the command. In addition to this head address, a command code is included. This command code instructs "operation / stop switching" or "interconnection / independent operation mode switching" by operation of each operation key switch 40a, 40b of the remote controller 17.

  In the interconnection inverter unit 16 and the sensor unit 14, a response indicating acceptance of the command code is returned to the remote controller 17, and this command code is executed to perform “operation / stop switching” or “interconnection / independence” of the power conditioner 12. Switch operation mode ”.

  At night time, the solar battery 11 does not generate power, so the power conditioner 12 is not operated, and the control circuit 23 of the interconnection inverter unit 16 is not operated in order to reduce power consumption. Therefore, the interconnection inverter unit 16 cannot respond to the command from the remote controller 17. In this case, the remote controller 17 repeats the transmission of the command because there is no response from the interconnection inverter unit 16.

  When the operation of the power conditioner 12 is resumed with sunrise, the interconnection inverter unit 16 receives a command from the remote controller 17, confirms the presence or absence of the remote controller 17, and returns a response. The remote controller 17 confirms the restart of the operation of the power conditioner 12 by receiving the response.

  Further, if there is no response to the command in the time zone from 10 am to 4 pm, the remote controller 17 assumes that some abnormality has occurred, and if there is no response to the command in another time zone. Considered nighttime.

  In this way, the remote controller 17 communicates with the interconnection inverter unit 16 and the sensor unit 14 so that the inverter 21 (solar battery 11) output power (generated power), the integrated power amount, and the like, the operating state of the power conditioner 2; When information such as selling power, buying power, selling power amount, buying power amount is collected, the information is stored in the flash memory 38.

  In the display unit 18, each information in the flash memory 38 of the remote controller 17 can be selectively instructed and requested by operating each of the operation key switches 61 a to 61 d, and this request can be made remotely by wired communication or wireless communication. Transmit to the controller 17. In response to a request from the display unit 18, the remote controller 17 selectively reads and processes each information in the flash memory 38 and transmits this information to the display unit 18. The display unit 18 displays this information on the screen of the liquid crystal module 57. Therefore, when the operation key switches 61 a to 61 d of the display unit 18 are operated to request necessary information, this information is transmitted from the remote controller 17 to the display unit 18 and displayed on the screen of the liquid crystal module 57. Is displayed. Therefore, regardless of where the display unit 18 is moved, information such as the operating state of the power conditioner 12 and the amount of power generated by the solar cell 11 can be received from the controller 17 and displayed. For this reason, if the user carries the display unit 18, the user can easily check the operating state of the power conditioner 12, the amount of generated power of the solar battery 11, and the like, which change from time to time.

  In the remote controller 17, the CPU 36 performs wired communication or wireless communication through the communication interface 34 or the wireless communication module 35. In the display unit 18, the CPU 54 performs wired communication or wireless communication through the communication interface 52 or the wireless communication module 53.

  Next, information transmitted / received from the interconnection inverter unit 16 and the sensor unit 14 to the remote controller 17 and information displayed on the display unit 18 will be described in detail.

  FIG. 13 illustrates information displayed on the display unit 18. In the remote controller 17, the power conditioner 12 such as the output power (generated power) of the inverter 21 (solar cell 11), the integrated power amount, etc. is normally communicated between the interconnection inverter unit 16 and the sensor unit 14 at regular intervals. Information such as the operating state, selling power, buying power, selling power, buying power, etc. is collected. Each time information is collected, power consumption is calculated based on the generated power, the sold power, and the purchased power, and the consumed power, generated power, trading power, and operating state are transmitted to the display unit 18.

  In the display unit 18, as shown in FIG. 13, the power consumption, the generated power, the buying and selling power, and the operation state are received and displayed on the screen of the liquid crystal module 57, and the display content is updated each time such information is received. .

  In addition, when buying and selling power is +, it is selling power, and when buying and selling power is-, it is buying power.

  FIG. 14 shows other information displayed on the display unit 18. When the display unit 18 is switched from “present” to “integrated” by the operation of the operation key switch 61a, a request to this effect is transmitted to the remote controller 17 by wired communication or wireless communication. In response to the switching request from “current” to “integrated”, the remote controller 17 selectively reads and processes each piece of information in the flash memory 38 collected at regular intervals, and generates the power generation amount and power consumption for the day. The amount and the amount of electric power purchased and sold are obtained by calculation, and these amounts of power are transmitted to the display unit 18.

  In the display unit 18, as shown in FIG. 14, the generated power amount, the consumed power amount, and the purchased / sold power amount on the day are received and displayed on the screen of the liquid crystal module 57.

  The generated power amount on that day is obtained from the integrated power amount from the interconnection inverter unit 16.

  The amount of electric power purchased and the amount of electric power sold on the day are obtained from respective integrated values of electric power purchased and electric power sold from the sensor unit.

  The power consumption amount on the day is obtained based on the integrated value of the generated power from the interconnection inverter unit 16, the purchased power amount, and the sold power amount.

  Further, by appropriately operating the operation key switches 61b and 61c of the display unit 18, a display request for the generated power amount, the consumed power amount, and the purchased / sold power amount on the previous day or the day before the previous day is sent from the display unit 18 to the remote controller. 17 can be transmitted. In response to this, the remote controller 17 calculates and obtains the amount of generated power, the amount of consumed power, and the amount of purchased and sold power of the previous day or two days before, and transmits these amounts of power to the display unit 18. In the display unit 18, the generated power amount, the consumed power amount, and the purchased / sold power amount on the day before and the day before the previous day are received and displayed on the screen of the liquid crystal module 57.

  In addition, by appropriately operating the operation key switches 61b and 61c of the display unit 18, a display request for the generated power amount, the consumed power amount, and the purchased / sold power amount for the current month is transmitted from the display unit 18 to the remote controller 17. can do. In response to this, the remote controller 17 calculates and calculates the generated power amount, the consumed power amount, and the purchased and sold power amount for the current month, and transmits these power amounts to the display unit 18. As shown in FIG. 15, the display unit 18 receives the generated power amount, the consumed power amount, and the purchased / sold power amount for the current month and displays them on the screen of the liquid crystal module 57.

Note that the amount of generated power, the amount of consumed power, and the amount of purchased and sold electricity for the current year are also obtained and displayed in the same manner as this month. Further, graphic data such as a graph indicating information may be created on the remote controller 17 side, and the graph or the like may be displayed on the display unit 18 side. Alternatively, the amount of generated power may be converted into an electricity bill or CO ₂ emission amount on the remote controller 17 side, and the converted value may be displayed on the display unit 18 side.

  Further, in the remote controller 17, as described above, the LEDs 41a to 41d are selectively turned on, blinked, and turned off so that the connected mode operation, the connected mode standby, the connected mode stop,. Each operation status such as mode and power-off is displayed. For this reason, even when the display unit 18 moves out of the communication area of the remote controller 17 or when the secondary battery 63 of the display unit 18 runs out and communication between the display unit 18 and the remote controller 17 becomes impossible, The operating state of the power conditioner 12 can be known.

  Further, a charging unit 81 for charging the secondary battery 63 of the display unit 18 as shown in FIG. 16 may be provided. As shown in FIG. 17, the charging unit 81 includes a power supply circuit 82 that converts AC power from a commercial power source into DC power, and a connector 83 to which DC power from the power supply circuit 82 is applied. When the display unit 18 is placed on the charging unit 81, the connector 83 of the charging unit 81 is connected to the connector 51 of the display unit 18, and the DC power of the power circuit 82 is applied to the charging circuit 62 of the display unit 18. The secondary battery 63 is charged.

It is a block diagram which shows the structure of the solar energy power generation system to which Example 1 of the power conditioner of this invention is applied. It is a block diagram which shows the structure of the interconnection inverter unit of FIG. It is a block diagram which shows the structure of the remote controller of FIG. It is a block diagram which shows the structure of the display unit of FIG. It is a perspective view which shows the remote controller and display unit of FIG. It is a graph which shows each driving | running state displayed by each LED of the remote controller of FIG. It is a block diagram which shows the structure of the electricity distribution panel and sensor unit of FIG. It is a figure which shows the communication protocol performed between the remote controller of FIG. 1, a connection inverter unit, and a sensor unit. It is a figure which illustrates the format of the command transmitted / received from the remote controller of FIG. 1 to a connection inverter unit and a sensor unit. It is a figure which illustrates the format of the response transmitted / received from the interconnection inverter unit of FIG. 1 to a remote controller. It is a figure which illustrates the format of the response transmitted / received from the sensor unit of FIG. 1 to a remote controller. It is a figure which shows the format of the other command transmitted / received to the interconnection inverter unit and sensor unit from the remote controller of FIG. It is a figure which illustrates the information displayed with the display unit of FIG. It is a figure which shows the other information displayed with the display unit of FIG. It is a figure which shows another information displayed with the display unit of FIG. It is a perspective view which shows the charging unit for charging the secondary battery of the display unit of FIG. It is a block diagram which shows the structure of the charging unit of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Solar cell 12 Power conditioner 13 Distribution board 14 Sensor unit 15 Commercial power supply 16 Interconnection inverter unit 17 Remote controller 18 Display unit 81 Charging unit

Claims (7)

In the power conditioner that controls the power supply from the distributed power supply linked to the power supply from the commercial power supply,
A power supply control unit for controlling power supply from the distributed power source;
A controller connected to the power supply control unit;
A power conditioner comprising: a display unit that transmits and receives information to and from a controller through wireless communication and displays the information.   The power conditioner according to claim 1, wherein the display unit is detachably attached to the controller.   The power conditioner according to claim 2, wherein when the display unit is attached to the controller, the display unit transmits and receives information to and from the controller by wired communication.   The power conditioner according to claim 1, wherein the display unit displays a generated power amount.   The power conditioner according to claim 1, wherein the controller displays an operation state of the power conditioner.   The power conditioner according to claim 1, wherein the controller accumulates various types of information displayed on the display unit and transmits information corresponding to a request from the display unit to the display unit. The power conditioner according to claim 1, further comprising a charging unit that is separate from the controller and on which the display unit is detachably mounted and charges a power source of the mounted display unit.

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