WO2023231755A1 - 相线零线反接的检测方法、装置、存储介质和变频空调 - Google Patents

相线零线反接的检测方法、装置、存储介质和变频空调 Download PDF

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Publication number
WO2023231755A1
WO2023231755A1 PCT/CN2023/094169 CN2023094169W WO2023231755A1 WO 2023231755 A1 WO2023231755 A1 WO 2023231755A1 CN 2023094169 W CN2023094169 W CN 2023094169W WO 2023231755 A1 WO2023231755 A1 WO 2023231755A1
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WIPO (PCT)
Prior art keywords
voltage value
phase
relay
line
neutral line
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PCT/CN2023/094169
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English (en)
French (fr)
Inventor
黄俊豪
王豪浩
张世洪
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合肥美的暖通设备有限公司
广东美的暖通设备有限公司
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Publication of WO2023231755A1 publication Critical patent/WO2023231755A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/55—Testing for incorrect line connections

Definitions

  • the present disclosure relates to the technical field of power supply adaptability, and specifically to a detection method, device, storage medium and variable frequency air conditioner for phase line and neutral line reverse connection.
  • a three-phase detection circuit as shown in Figure 1 is usually used for detection.
  • the principle is based on the periodic change of the three-phase phase line to neutral line voltage. Judging by the phase angle generated by the optocoupler, although the cost of using this circuit is not high, it occupies a large area and requires three special function pins of the main control chip, which is not conducive to the miniaturization and lightweight of the main control chip.
  • the present disclosure aims to solve at least one of the technical problems existing in the related art.
  • some embodiments of the present disclosure propose a method for detecting phase line and neutral line reverse connection.
  • Some embodiments of the present disclosure provide a detection device for phase line and neutral line reverse connection.
  • Some embodiments of the present disclosure provide a detection device for phase line and neutral line reverse connection.
  • Some embodiments of the present disclosure provide a readable storage medium.
  • Some embodiments of the present disclosure provide an inverter air conditioner.
  • a method for detecting phase line and neutral line reverse connection is proposed for a three-phase rectification circuit of an inverter air conditioner.
  • the three-phase rectification circuit includes a neutral line, a DC bus, and three phase lines.
  • the first relay, the second relay and the third relay respectively located on each phase line, the detection method includes: when the first relay, the second relay and the third relay are all closed, obtain the first voltage of the DC bus value; when any relay is disconnected, obtain the current voltage value of the DC bus; when the first voltage value is not equal to the current voltage value, determine that a phase line is reversely connected to the neutral line.
  • phase line and neutral line reverse connection proposed in this disclosure is mainly used for the three-phase rectification circuit of the variable frequency air conditioner, and its execution subject can be a phase line and neutral line reverse connection detection device.
  • execution subject of the phase line and neutral line reverse connection detection method is an exemplary description of a phase line and neutral line reverse connection detection device.
  • the above-mentioned three-phase rectifier circuit is the basic power supply circuit of the inverter air conditioner
  • the above-mentioned phase line is used to indicate the AC bus of the basic power supply circuit
  • the above-mentioned first relay, the second relay and the third relay are respectively arranged on the above-mentioned three phases.
  • Online used to control the disconnection and connection of the above three phase lines and the three-phase rectifier circuit.
  • the detection device first controls the first relay, the second relay and the third relay to close, and then obtains the current voltage value of the DC bus, that is, the first voltage value.
  • the detection device first controls the first relay, the second relay and the third relay to close, and then obtains the current voltage value of the DC bus, that is, the first voltage value.
  • the above-mentioned first relay, the above-mentioned second relay and the above-mentioned third relay are all in a closed state, regardless of whether there is a reverse connection between the phase line and the neutral line in the three-phase rectifier circuit, the obtained first voltage value equal to the phase-to-phase voltage times or equal to the phase-to-line voltage times.
  • the detection device disconnects any of the above-mentioned relays
  • the current voltage value of the DC bus is obtained, that is, only the above-mentioned first relay is controlled to be disconnected, or only the above-mentioned second relay is controlled to be disconnected, or only the above-mentioned third relay is controlled to be disconnected.
  • the detection device needs to control any relay to open and obtain the current voltage value of the DC bus, so that subsequent steps can determine whether any phase line and the neutral line are reversely connected in the three-phase rectifier circuit based on the current voltage value.
  • a voltage sensor is provided on the DC bus, and the detection device can obtain the first voltage value and the current voltage value through the voltage sensor.
  • the detection device determines the connection status of any one of the three phase lines and the neutral line according to the above-mentioned first voltage value and the above-mentioned current voltage value, that is, it determines whether there is a reverse connection between one phase line and the neutral line among the three phase lines. . Specifically, when the first voltage value and the current voltage value are not equal, it is determined that one phase line and the neutral line are reversely connected.
  • the detection device can determine whether the current voltage value of the DC bus when the relay on any phase line drops to times the phase voltage to determine whether any phase line and the neutral line are reversely connected. Therefore, the detection device can determine whether one of the three phase lines and the neutral line are reversely connected based on the above-mentioned first voltage value and the above-mentioned current voltage value. .
  • the detection device first obtains the first voltage value when the first relay, the second relay and the third relay are all in a closed state; when any of the relays is turned off, Obtain the above-mentioned current voltage value; and then determine whether one of the three phase lines is reversely connected to the neutral line based on the above-mentioned first voltage value and the above-mentioned current voltage value.
  • the technical solution of the present disclosure there is no need to set up an additional three-phase detection circuit in the power supply circuit of the inverter air conditioner.
  • the connection status judgment of any phase line and the neutral line can be realized only through the existing three-phase rectifier circuit of the inverter air conditioner. This facilitates the miniaturization and weight reduction of the power circuit of the inverter air conditioner, and at the same time reduces the production cost of the power circuit of the inverter air conditioner.
  • phase line and neutral line reverse connection detection method proposed according to the above technical solution of the present disclosure may also have the following additional technical features:
  • the detection method after determining that one phase line and the neutral line are reversely connected, the detection method also includes: when only the first relay is disconnected, obtain the second voltage value of the DC bus, and when only the second relay is disconnected In the case of , obtain the third voltage value of the DC bus, and when only the third relay is disconnected, obtain the fourth voltage value of the DC bus; according to the first voltage value, the second voltage value, the third voltage value and the third Four voltage values, confirm the wiring status of any phase line and neutral line.
  • the detection device after the detection device determines that a phase line and the neutral line are reversely connected, it can also determine which phase line and neutral line are reversely connected.
  • the specific method is: the detection device only controls the above-mentioned first The relay is turned off, and the voltage value of the DC bus is obtained at this time, that is, the above-mentioned second voltage value; the detection device only controls the second relay to be turned off, and the voltage value of the DC bus is obtained at this time, that is, the above-mentioned third voltage value; detection The device only controls the third relay to open and obtains the voltage value of the DC bus at this time, that is, the fourth voltage value.
  • the detection device determines the connection status of any one of the three phase lines and the neutral line based on the above-mentioned first voltage value, the above-mentioned second voltage value, the above-mentioned third voltage value and the above-mentioned fourth voltage value, that is, determines the connection status of the three phase lines. Which phase line and neutral line are reversely connected?
  • the detection device can obtain the second voltage value, the third voltage value and the fourth voltage value respectively when only the above-mentioned first relay, the above-mentioned second relay or the above-mentioned third relay are disconnected respectively, and determine the specific conditions among the three phase lines. Which phase line and neutral line are reversely connected.
  • the detection device when it is determined that one phase line and the neutral line are reversely connected in the three-phase rectification circuit, the detection device can disconnect only the above-mentioned first relay, the above-mentioned second relay or the above-mentioned third relay respectively, The respectively obtained second voltage value, third voltage value and fourth voltage value are used to determine the wiring status of any one of the three phase lines and the neutral line. It is realized that there is no need to set up an additional three-phase detection circuit in the power circuit of the inverter air conditioner. The wiring status of any phase line and the neutral line can be judged only through the existing three-phase rectifier circuit of the inverter air conditioner, which facilitates the power supply of the inverter air conditioner. Miniaturization and lightweight of circuits.
  • the step of confirming the connection status of any phase line and the neutral line specifically includes: If the four voltage values are all less than the first voltage value, confirm that the phase line where the first relay is located is reversely connected to the neutral line.
  • the process of the detection device determining the connection status of any of the three phase lines and the neutral line in the three-phase rectification circuit of the variable frequency air conditioner is: the detection device determines the above-mentioned second voltage value, the above-mentioned third voltage value and the above-mentioned A voltage value that is smaller than the above-mentioned first voltage value among the fourth voltage values.
  • the detection device determines that both the third voltage value and the fourth voltage value are less than the first voltage value, the detection device determines that the phase line and the neutral line where the first relay is located are reversely connected.
  • the above-mentioned third voltage value and the above-mentioned fourth voltage value are less than the above-mentioned first voltage value, it indicates the voltage value of the DC bus when only the second relay is disconnected, or the voltage value of the DC bus when only the third relay is disconnected.
  • the voltage value is determined by the normal The phase voltage drops to Double the phase voltage, that is, the phase line where the second relay and the third relay are located are not reversely connected to the neutral line. Therefore, it can be determined that the phase line where the first relay is located is reversely connected to the neutral line.
  • the detection device can be configured with the above-mentioned third voltage value according to the above-mentioned second voltage value, the above-mentioned third voltage value and the above-mentioned fourth voltage value. Based on the specific magnitude relationship of the voltage value, it is determined which phase line among the three phase lines is reversely connected to the neutral line, which facilitates subsequent steps to quickly handle the reverse connection fault.
  • the step of confirming the connection status of any phase line and the neutral line specifically includes: If the four voltage values are all less than the first voltage value, confirm that the phase line where the second relay is located is reversely connected to the neutral line.
  • the process of the detection device determining the connection status of any of the three phase lines and the neutral line in the three-phase rectification circuit of the variable frequency air conditioner is: the detection device determines the above-mentioned second voltage value, the above-mentioned third voltage value and the above-mentioned A voltage value that is smaller than the above-mentioned first voltage value among the fourth voltage values.
  • the detection device determines that both the second voltage value and the fourth voltage value are less than the first voltage value, the detection device determines that the phase line and the neutral line where the second relay is located are reversely connected.
  • the above-mentioned second voltage value and the above-mentioned fourth voltage value are both smaller than the above-mentioned first voltage value, it indicates that the voltage value of the DC bus when only the first relay is disconnected, or the DC bus voltage value when only the third relay is disconnected.
  • the bus voltage value is changed from the normal
  • the phase voltage drops to Double the phase voltage, that is, the phase line where the first relay and the third relay are located are not reversely connected to the neutral line. Therefore, it can be determined that the phase line where the second relay is located is reversely connected to the neutral line.
  • the detection device can be configured with the above-mentioned third voltage value according to the above-mentioned second voltage value, the above-mentioned third voltage value and the above-mentioned fourth voltage value. Based on the specific magnitude relationship of the voltage value, it is determined which phase line among the three phase lines is reversely connected to the neutral line, which facilitates subsequent steps to quickly handle the reverse connection fault.
  • the step of confirming the connection status of any phase line and the neutral line specifically includes: If the third voltage value is less than the first voltage value, confirm that the phase line where the third relay is located is reversely connected to the neutral line.
  • the process of the detection device determining the connection status of any of the three phase lines and the neutral line in the three-phase rectification circuit of the variable frequency air conditioner is: the detection device determines the above-mentioned second voltage value, the above-mentioned third voltage value and the above-mentioned A voltage value that is smaller than the above-mentioned first voltage value among the fourth voltage values.
  • the detection device determines that both the second voltage value and the third voltage value are less than the first voltage value, the detection device determines that the phase line and the neutral line where the third relay is located are reversely connected.
  • the above-mentioned second voltage value and the above-mentioned third voltage value are both smaller than the above-mentioned first voltage value, it indicates that the voltage value of the DC bus when only the first relay is disconnected, or the DC bus voltage value when only the second relay is disconnected.
  • the bus voltage value is changed from the normal
  • the phase voltage drops to Double the phase voltage, that is, the phase line where the first relay and the second relay are located is not reversely connected to the neutral line. Therefore, it can be determined that the phase line where the third relay is located is reversely connected to the neutral line.
  • the detection device can be configured with the above-mentioned third voltage value according to the above-mentioned second voltage value, the above-mentioned third voltage value and the above-mentioned fourth voltage value. Based on the specific magnitude relationship of the voltage value, it is determined which phase line among the three phase lines is reversely connected to the neutral line, which facilitates subsequent steps to quickly handle the reverse connection fault.
  • a detection device for phase line and neutral line reverse connection is proposed, which is used in a three-phase rectification circuit of a variable frequency air conditioner.
  • the three-phase rectification circuit includes a neutral line, a DC bus, three phase lines and three phase lines respectively located on each
  • the first relay, the second relay and the third relay on the phase line the detection device includes: an acquisition module, used to acquire the first relay of the DC bus when the first relay, the second relay and the third relay are all closed. voltage value; the acquisition module is also used to obtain the current voltage value of the DC bus when any relay is disconnected; the processing module is used to determine a phase line and zero when the first voltage value is not equal to the current voltage value.
  • the wires are reversed.
  • the above-mentioned three-phase rectifier circuit is the basic power supply circuit of the inverter air conditioner
  • the above-mentioned phase line is used to indicate the AC bus of the basic power supply circuit
  • the above-mentioned first relay, the second relay and the third relay are respectively arranged on the above-mentioned three phases.
  • Online used to control the disconnection and connection of the above three phase lines and the three-phase rectifier circuit.
  • the acquisition module first acquires the current voltage value of the DC bus, that is, the first voltage value, when the first relay, the second relay, and the third relay are all closed. Specifically, when the above-mentioned first relay, the above-mentioned second relay and the above-mentioned third relay are all in a closed state, regardless of whether there is a reverse connection between the phase line and the neutral line in the three-phase rectifier circuit, the obtained first voltage value equal to the phase-to-phase voltage times or equal to the phase-to-line voltage times.
  • the acquisition module acquires the current voltage value of the DC bus, that is, the acquisition module only controls the above-mentioned first relay to disconnect, or only controls the above-mentioned second relay to disconnect, or only controls the above-mentioned third relay to disconnect. The voltage value of the DC bus when the three relays are disconnected.
  • the acquisition module needs to obtain the current voltage value of the DC bus when any relay is disconnected, so that the processing module in subsequent steps can determine whether any phase line and neutral line are reversely connected in the three-phase rectifier circuit based on the current voltage value.
  • the processing module in subsequent steps can determine whether any phase line and neutral line are reversely connected in the three-phase rectifier circuit based on the current voltage value.
  • a voltage sensor is provided on the DC bus, and the acquisition module can obtain the first voltage value and the current voltage value through the voltage sensor.
  • the processing module determines the connection status of any one of the three phase lines and the neutral line according to the above-mentioned first voltage value and the above-mentioned current voltage value, that is, determines whether there is a reverse connection between one phase line and the neutral line among the three phase lines. . Specifically, when the first voltage value and the current voltage value are not equal, it is determined that one phase line and the neutral line are reversely connected.
  • the processing module can determine whether the current voltage value of the DC bus when the relay on any phase line drops to times the phase voltage to determine whether any phase line and the neutral line are reversely connected. Therefore, the detection device can determine whether one of the three phase lines and the neutral line are reversely connected based on the above-mentioned first voltage value and the above-mentioned current voltage value. .
  • the acquisition module first acquires the first voltage value when the first relay, the second relay and the third relay are all in a closed state; when any of the relays is disconnected, The above-mentioned current voltage value is obtained; the processing module determines whether one of the three phase lines is reversely connected to the neutral line based on the above-mentioned first voltage value and the above-mentioned current voltage value.
  • the technical solution of the present disclosure there is no need to set up an additional three-phase detection circuit in the power supply circuit of the inverter air conditioner.
  • the connection status judgment of any phase line and the neutral line can be realized only through the existing three-phase rectifier circuit of the inverter air conditioner. This facilitates the miniaturization and weight reduction of the power circuit of the inverter air conditioner, and at the same time reduces the production cost of the power circuit of the inverter air conditioner.
  • the detection device for phase line and neutral line reverse connection proposed according to the above technical solution of the present disclosure may also have the following additional technical features:
  • the acquisition module is also used to acquire the second voltage value of the DC bus when only the first relay is disconnected, and acquire the third voltage value of the DC bus when only the second relay is disconnected. , when only the third relay is disconnected, obtain the fourth voltage value of the DC bus; the processing module is also used to confirm any voltage value based on the first voltage value, the second voltage value, the third voltage value and the fourth voltage value.
  • the wiring status of phase and neutral wires is also used to acquire the second voltage value of the DC bus when only the first relay is disconnected, and acquire the third voltage value of the DC bus when only the second relay is disconnected.
  • the processing device determines that a phase line and the neutral line are reversely connected, it can also determine which phase line and neutral line are reversely connected.
  • the specific method is: first, through the acquisition module, only the above-mentioned When the first relay is disconnected, the second voltage value of the DC bus is obtained; when only the second relay is disconnected, the third voltage value of the DC bus is obtained; when only the third relay is disconnected, the fourth voltage value of the DC bus is obtained. Voltage value.
  • the processing module determines the wiring status of any one of the three phase lines and the neutral line according to the above-mentioned first voltage value, the above-mentioned second voltage value, the above-mentioned third voltage value and the above-mentioned fourth voltage value, that is, determines the connection status of the three phase lines. Which phase line and neutral line are reversely connected?
  • the processing module can obtain the second voltage value, the third voltage value and the fourth voltage value respectively when the acquisition module only disconnects the above-mentioned first relay, the above-mentioned second relay or the above-mentioned third relay, and determines the three phase lines. Which phase line and neutral line are reversely connected.
  • the processing module can disconnect only the above-mentioned first relay, the above-mentioned second relay or the above-mentioned third relay respectively when it is determined that one phase line and the neutral line are reversely connected in the three-phase rectification circuit.
  • the respectively obtained second voltage value, third voltage value and fourth voltage value are used to determine the wiring status of any one of the three phase lines and the neutral line. It is realized that there is no need to set up an additional three-phase detection circuit in the power circuit of the inverter air conditioner.
  • the wiring status of any phase line and the neutral line can be judged only through the existing three-phase rectifier circuit of the inverter air conditioner, which facilitates the power supply of the inverter air conditioner. Miniaturization and lightweight of circuits.
  • the processing module is also used to confirm that the phase line where the first relay is located and the neutral line are reversely connected when the third voltage value and the fourth voltage value are both less than the first voltage value.
  • the process of the processing module determining the connection status of any of the three phase lines and the neutral line in the three-phase rectifier circuit of the variable frequency air conditioner is: the processing module determines the above-mentioned second voltage value, the above-mentioned third voltage value and the above-mentioned A voltage value that is smaller than the above-mentioned first voltage value among the fourth voltage values.
  • the processing module determines that both the third voltage value and the fourth voltage value are less than the first voltage value, the processing module determines that the phase line and the neutral line where the first relay is located are reversely connected.
  • the above-mentioned third voltage value and the above-mentioned fourth voltage value are less than the above-mentioned first voltage value, it indicates the voltage value of the DC bus when only the second relay is disconnected, or the voltage value of the DC bus when only the third relay is disconnected.
  • the voltage value is determined by the normal The phase voltage drops to Double the phase voltage, that is, the phase line where the second relay and the third relay are located are not reversely connected to the neutral line. Therefore, it can be determined that the phase line where the first relay is located is reversely connected to the neutral line.
  • the processing module can determine which of the three phase lines is reversely connected to the neutral line based on the specific relationship between the above-mentioned second voltage value, the above-mentioned third voltage value, the above-mentioned fourth voltage value and the above-mentioned first voltage value, so as to facilitate The subsequent steps will quickly resolve the reverse connection fault.
  • the processing module is also used to confirm that the phase line where the second relay is located is reversely connected to the neutral line when the second voltage value and the fourth voltage value are both less than the first voltage value.
  • the process of the processing module determining the connection status of any of the three phase lines and the neutral line in the three-phase rectifier circuit of the variable frequency air conditioner is: the processing module determines the above-mentioned second voltage value, the above-mentioned third voltage value and the above-mentioned A voltage value that is smaller than the above-mentioned first voltage value among the fourth voltage values.
  • the processing module determines that both the second voltage value and the fourth voltage value are less than the first voltage value, the processing module determines that the phase line and the neutral line where the second relay is located are reversely connected.
  • the above-mentioned second voltage value and the above-mentioned fourth voltage value are both smaller than the above-mentioned first voltage value, it indicates that the voltage value of the DC bus when only the first relay is disconnected, or the DC bus voltage value when only the third relay is disconnected.
  • the bus voltage value is changed from the normal
  • the phase voltage drops to Double the phase voltage, that is, the phase line where the first relay and the third relay are located are not reversely connected to the neutral line. Therefore, it can be determined that the phase line where the second relay is located is reversely connected to the neutral line.
  • the processing module can calculate the above-mentioned third voltage value according to the above-mentioned second voltage value, the above-mentioned third voltage value and the above-mentioned fourth voltage value. Based on the specific magnitude relationship of the voltage value, it is determined which phase line among the three phase lines is reversely connected to the neutral line, which facilitates subsequent steps to quickly handle the reverse connection fault.
  • the processing module is also used to confirm that the phase line where the third relay is located is reversely connected to the neutral line when the second voltage value and the third voltage value are less than the first voltage value.
  • the process of the processing module determining the connection status of any of the three phase lines and the neutral line in the three-phase rectifier circuit of the variable frequency air conditioner is: the processing module determines the above-mentioned second voltage value, the above-mentioned third voltage value and the above-mentioned A voltage value that is smaller than the above-mentioned first voltage value among the fourth voltage values.
  • the processing module determines that both the second voltage value and the third voltage value are less than the first voltage value, the processing module determines that the phase line and the neutral line where the third relay is located are reversely connected.
  • the above-mentioned second voltage value and the above-mentioned third voltage value are both smaller than the above-mentioned first voltage value, it indicates that the voltage value of the DC bus when only the first relay is disconnected, or the DC bus voltage value when only the second relay is disconnected.
  • the bus voltage value is changed from the normal
  • the phase voltage drops to Double the phase voltage, that is, the phase line where the first relay and the second relay are located is not reversely connected to the neutral line. Therefore, it can be determined that the phase line where the third relay is located is reversely connected to the neutral line.
  • the processing module can calculate the above-mentioned third voltage value according to the above-mentioned second voltage value, the above-mentioned third voltage value and the above-mentioned fourth voltage value. Based on the specific magnitude relationship of the voltage value, it is determined which phase line among the three phase lines is reversely connected to the neutral line, which facilitates subsequent steps to quickly handle the reverse connection fault.
  • a detection device for reverse connection of phase and neutral lines includes: a memory, in which programs or instructions are stored; and a processor, in which the processor executes the programs or instructions stored in the memory to implement
  • the steps of the phase line and neutral line reverse connection detection method proposed in the above technical solution of the present disclosure have all the beneficial technical effects of the phase line and neutral line reverse connection detection method proposed in the above technical solution of the present disclosure, and will not be repeated here. More details.
  • a readable storage medium on which a program or instructions are stored.
  • the program or instructions are executed by a processor, the method for detecting phase-to-neutral reverse connection as proposed in the above technical solution of the present disclosure is implemented. Therefore, the readable storage medium has all the beneficial effects of the phase line and neutral line reverse connection detection method proposed in the above technical solution of the present disclosure, which will not be described again here.
  • variable frequency air conditioner including a phase line and neutral line reverse connection detection device as proposed in the above technical solution of this disclosure, and/or a readable storage medium as proposed in the above technical solution of this disclosure. Therefore, Should The variable frequency air conditioner has all the beneficial effects of the phase-neutral reverse connection detection device proposed in the above technical solution of the present disclosure and/or the readable storage medium proposed in the above technical solution of the present disclosure, which will not be described again here.
  • Figure 1 shows a schematic diagram of a three-phase detection circuit in the related art
  • Figure 2 shows one of the schematic flow diagrams of a method for detecting reverse connection of phase and neutral lines according to some embodiments of the present disclosure
  • Figure 3 shows a schematic diagram of a three-phase rectifier circuit of an inverter air conditioner according to some embodiments of the present disclosure
  • Figure 4 shows the second schematic flowchart of the method for detecting phase line and neutral line reverse connection according to some embodiments of the present disclosure
  • Figure 5 shows the third schematic flowchart of the method for detecting phase line and neutral line reverse connection according to some embodiments of the present disclosure
  • Figure 6 shows the fourth schematic flowchart of the method for detecting phase line and neutral line reverse connection according to some embodiments of the present disclosure
  • Figure 7 shows the fifth schematic flowchart of the method for detecting phase line and neutral line reverse connection according to some embodiments of the present disclosure
  • Figure 8 shows one of the schematic block diagrams of a phase line and neutral line reverse connection detection device according to some embodiments of the present disclosure
  • Figure 9 shows the second schematic block diagram of the phase line and neutral line reverse connection detection device according to some embodiments of the present disclosure.
  • Figure 2 shows a schematic flow chart of a method for detecting reverse connection of phase and neutral lines according to some embodiments of the present disclosure.
  • the detection method is used in a three-phase rectifier circuit of a variable frequency air conditioner.
  • the three-phase rectifier circuit includes a neutral line, a DC bus, Three phase lines and the first relay, the second relay and the third relay respectively located on each phase line.
  • the detection method includes:
  • Step S202 when the first relay, the second relay and the third relay are all closed, obtain the first voltage value of the DC bus
  • Step S204 when any relay is disconnected, obtain the current voltage value of the DC bus
  • Step S206 When the first voltage value is not equal to the current voltage value, it is determined that one phase line and the neutral line are reversely connected.
  • phase line and neutral line reverse connection proposed in this disclosure is mainly used for the three-phase rectification circuit of the variable frequency air conditioner, and its execution subject can be a phase line and neutral line reverse connection detection device.
  • execution subject of the phase line and neutral line reverse connection detection method is an exemplary description of a phase line and neutral line reverse connection detection device.
  • FIG. 3 An exemplary three-phase rectifier circuit of an inverter air conditioner is shown in Figure 3, in which the neutral line is represented by N, the three phase lines are represented by L1, L2 and L3 respectively, the DC bus is represented by L4, and the first relay is represented by RY1.
  • the neutral line is represented by N
  • the three phase lines are represented by L1, L2 and L3 respectively
  • the DC bus is represented by L4
  • the first relay is represented by RY1.
  • Set on L1 the second relay is represented by RY2 and is located on L2
  • the third relay is represented by RY3 and is located on L3.
  • the above-mentioned three-phase rectifier circuit is the basic power supply circuit of the inverter air conditioner.
  • the above-mentioned phase lines are used to indicate the AC bus of the basic power supply circuit.
  • the above-mentioned first relay, the second relay and the third relay are respectively arranged on the above-mentioned three phases. Online, used to control the disconnection and connection of the above three phase lines and the three-phase rectifier circuit.
  • the detection device first controls the first relay, the second relay and the third relay to close, and then obtains the current voltage value of the DC bus, that is, the first voltage value.
  • the above first relay When the above-mentioned second relay and the above-mentioned third relay are all in a closed state, regardless of whether there is a reverse connection between the phase line and the neutral line in the three-phase rectifier circuit, the above-mentioned first voltage value obtained is equal to the phase-to-phase voltage. times or equal to the phase-to-line voltage times.
  • the detection device disconnects any of the above-mentioned relays
  • the current voltage value of the DC bus is obtained, that is, only the above-mentioned first relay is controlled to be disconnected, or only the above-mentioned second relay is controlled to be disconnected, or only the above-mentioned third relay is controlled to be disconnected.
  • the detection device needs to control any relay to open and obtain the current voltage value of the DC bus, so that subsequent steps can determine whether any phase line and the neutral line are reversely connected in the three-phase rectifier circuit based on the current voltage value.
  • a voltage sensor is provided on the DC bus, and the detection device can obtain the first voltage value and the current voltage value through the voltage sensor.
  • the detection device determines the connection status of any one of the three phase lines and the neutral line according to the above-mentioned first voltage value and the above-mentioned current voltage value, that is, it determines whether there is a reverse connection between one phase line and the neutral line among the three phase lines. . Specifically, when the first voltage value and the current voltage value are not equal, it is determined that one phase line and the neutral line are reversely connected.
  • the detection device can determine whether the current voltage value of the DC bus when the relay on any phase line drops to times the phase voltage to determine whether any phase line and the neutral line are reversely connected. Therefore, the detection device can determine whether one of the three phase lines and the neutral line are reversely connected based on the above-mentioned first voltage value and the above-mentioned current voltage value. .
  • the detection device first obtains the first voltage value when the first relay, the second relay and the third relay are all in a closed state; when any of the relays is turned off, Obtain the above-mentioned current voltage value; and then determine whether one of the three phase lines is reversely connected to the neutral line based on the above-mentioned first voltage value and the above-mentioned current voltage value.
  • the connection status judgment of any phase line and neutral line can be realized only through the existing three-phase rectifier circuit of the inverter air conditioner. , which facilitates the miniaturization and lightweight of the power circuit of the inverter air conditioner, and at the same time can reduce the production cost of the power circuit of the inverter air conditioner.
  • Figure 4 shows a schematic flowchart of a method for detecting phase line and neutral line reverse connection according to some embodiments of the present disclosure.
  • the detection method includes:
  • Step S402 when the first relay, the second relay and the third relay are all closed, obtain the first voltage value of the DC bus;
  • Step S404 when any relay is disconnected, obtain the current voltage value of the DC bus
  • Step S406 when the first voltage value is not equal to the current voltage value, determine that one phase line and the neutral line are reversely connected;
  • Step S408 When only the first relay is disconnected, obtain the second voltage value of the DC bus. When only the second relay is disconnected, obtain the third voltage value of the DC bus. When only the third relay is disconnected, obtain the third voltage value of the DC bus. In the case of , obtain the fourth voltage value of the DC bus;
  • Step S410 Confirm the connection status of any phase line and neutral line based on the first voltage value, the second voltage value, the third voltage value and the fourth voltage value.
  • the detection device after the detection device determines that a phase line and the neutral line are reversely connected, it can also determine which phase line and neutral line are reversely connected.
  • the specific method is: the detection device only controls the above-mentioned first The relay is turned off, and the voltage value of the DC bus is obtained at this time, that is, the above-mentioned second voltage value; the detection device only controls the second relay to be turned off, and the voltage value of the DC bus is obtained at this time, that is, the above-mentioned third voltage value; detection The device only controls the third relay above to break Turn on, and obtain the voltage value of the DC bus at this time, which is the fourth voltage value mentioned above.
  • the detection device determines the connection status of any one of the three phase lines and the neutral line based on the above-mentioned first voltage value, the above-mentioned second voltage value, the above-mentioned third voltage value and the above-mentioned fourth voltage value, that is, determines the connection status of the three phase lines. Which phase line and neutral line are reversely connected?
  • the detection device can obtain the second voltage value, the third voltage value and the fourth voltage value respectively when only the above-mentioned first relay, the above-mentioned second relay or the above-mentioned third relay are disconnected respectively, and determine the specific conditions among the three phase lines. Which phase line and neutral line are reversely connected.
  • the detection device when it is determined that one phase line and the neutral line are reversely connected in the three-phase rectifier circuit, the detection device can disconnect only the above-mentioned first relay, the above-mentioned second relay or the above-mentioned third relay respectively, The respectively obtained second voltage value, third voltage value and fourth voltage value are used to determine the wiring status of any one of the three phase lines and the neutral line. It is realized that there is no need to set up an additional three-phase detection circuit in the power circuit of the inverter air conditioner. The wiring status of any phase line and the neutral line can be judged only through the existing three-phase rectifier circuit of the inverter air conditioner, which facilitates the power supply of the inverter air conditioner. Miniaturization and lightweight of circuits.
  • Figure 5 shows a schematic flowchart of a method for detecting phase line and neutral line reverse connection according to some embodiments of the present disclosure.
  • the detection method includes:
  • Step S502 when the first relay, the second relay and the third relay are all closed, obtain the first voltage value of the DC bus;
  • Step S504 when any relay is disconnected, obtain the current voltage value of the DC bus
  • Step S506 when the first voltage value is not equal to the current voltage value, determine that one phase line and the neutral line are reversely connected;
  • Step S508 When only the first relay is disconnected, obtain the second voltage value of the DC bus. When only the second relay is disconnected, obtain the third voltage value of the DC bus. When only the third relay is disconnected, obtain the third voltage value of the DC bus. In the case of , obtain the fourth voltage value of the DC bus;
  • Step S510 When both the third voltage value and the fourth voltage value are less than the first voltage value, confirm that the phase line where the first relay is located is reversely connected to the neutral line.
  • the process by which the detection device determines the connection status of any of the three phase lines and the neutral line in the three-phase rectifier circuit of the inverter air conditioner is: the detection device determines the above-mentioned second voltage value, the above-mentioned third voltage value and the above-mentioned A voltage value that is smaller than the above-mentioned first voltage value among the fourth voltage values.
  • the detection device determines that both the third voltage value and the fourth voltage value are less than the first voltage value, the detection device determines that the phase line and the neutral line where the first relay is located are reversely connected.
  • the above-mentioned third voltage value and the above-mentioned fourth voltage value are less than the above-mentioned first voltage value, it indicates the voltage value of the DC bus when only the second relay is disconnected, or the voltage value of the DC bus when only the third relay is disconnected.
  • the voltage value is determined by the normal The phase voltage drops to Double the phase voltage, that is, the phase line where the second relay and the third relay are located are not reversely connected to the neutral line. Therefore, it can be determined that the phase line where the first relay is located is reversely connected to the neutral line.
  • the detection device can detect the above-mentioned second voltage value, the above-mentioned third voltage value and the above-mentioned fourth voltage value and the above-mentioned third voltage value. Based on the specific magnitude relationship of the voltage value, it is determined which phase line among the three phase lines is reversely connected to the neutral line, which facilitates subsequent steps to quickly handle the reverse connection fault.
  • Figure 6 shows a schematic flowchart of a method for detecting phase line and neutral line reverse connection according to some embodiments of the present disclosure.
  • the detection method includes:
  • Step S602 when the first relay, the second relay and the third relay are all closed, obtain the first voltage value of the DC bus;
  • Step S604 when any relay is disconnected, obtain the current voltage value of the DC bus
  • Step S606 when the first voltage value is not equal to the current voltage value, determine that one phase line and the neutral line are reversely connected;
  • Step S608 When only the first relay is disconnected, obtain the second voltage value of the DC bus. When only the second relay is disconnected, obtain the third voltage value of the DC bus. When only the third relay is disconnected, obtain the third voltage value of the DC bus. In the case of , obtain the fourth voltage value of the DC bus;
  • Step S610 When both the second voltage value and the fourth voltage value are less than the first voltage value, confirm that the phase line where the second relay is located is reversely connected to the neutral line.
  • the process by which the detection device determines the connection status of any of the three phase lines and the neutral line in the three-phase rectifier circuit of the inverter air conditioner is: the detection device determines the above-mentioned second voltage value, the above-mentioned third voltage value and the above-mentioned A voltage value that is smaller than the above-mentioned first voltage value among the fourth voltage values.
  • the detection device determines that both the second voltage value and the fourth voltage value are less than the first voltage value, the detection device determines that the phase line and the neutral line where the second relay is located are reversely connected.
  • the above-mentioned second voltage value and the above-mentioned fourth voltage value are both smaller than the above-mentioned first voltage value, it indicates that the voltage value of the DC bus when only the first relay is disconnected, or the DC bus voltage value when only the third relay is disconnected.
  • the bus voltage value is changed from the normal
  • the phase voltage drops to Double the phase voltage, that is, the phase line where the first relay and the third relay are located are not reversely connected to the neutral line. Therefore, it can be determined that the phase line where the second relay is located is reversely connected to the neutral line.
  • the detection device can detect the above-mentioned second voltage value, the above-mentioned third voltage value and the above-mentioned fourth voltage value and the above-mentioned third voltage value. Based on the specific magnitude relationship of the voltage value, it is determined which phase line among the three phase lines is reversely connected to the neutral line, which facilitates subsequent steps to quickly handle the reverse connection fault.
  • Figure 7 shows a schematic flowchart of a method for detecting phase line and neutral line reverse connection according to some embodiments of the present disclosure.
  • the detection method includes:
  • Step S702 when the first relay, the second relay and the third relay are all closed, obtain the first voltage value of the DC bus;
  • Step S704 when any relay is disconnected, obtain the current voltage value of the DC bus
  • Step S706 when the first voltage value is not equal to the current voltage value, determine that one phase line and the neutral line are reversely connected;
  • Step S708 When only the first relay is disconnected, obtain the second voltage value of the DC bus. When only the second relay is disconnected, obtain the third voltage value of the DC bus. When only the third relay is disconnected, the third voltage value of the DC bus is obtained. In the case of , obtain the fourth voltage value of the DC bus;
  • Step S710 When the second voltage value and the third voltage value are less than the first voltage value, confirm that the phase line where the third relay is located is reversely connected to the neutral line.
  • the process by which the detection device determines the connection status of any of the three phase lines and the neutral line in the three-phase rectifier circuit of the inverter air conditioner is: the detection device determines the above-mentioned second voltage value, the above-mentioned third voltage value and the above-mentioned A voltage value that is smaller than the above-mentioned first voltage value among the fourth voltage values.
  • the detection device determines that both the second voltage value and the third voltage value are less than the first voltage value, the detection device determines that the phase line and the neutral line where the third relay is located are reversely connected.
  • the above-mentioned second voltage value and the above-mentioned third voltage value are both smaller than the above-mentioned first voltage value, it indicates that the voltage value of the DC bus when only the first relay is disconnected, or the DC bus voltage value when only the second relay is disconnected.
  • the bus voltage value is changed from the normal
  • the phase voltage drops to Double the phase voltage, that is, the phase line where the first relay and the second relay are located is not reversely connected to the neutral line. Therefore, it can be determined that the phase line where the third relay is located is reversely connected to the neutral line.
  • the detection device can detect the above-mentioned second voltage value, the above-mentioned third voltage value and the above-mentioned fourth voltage value and the above-mentioned third voltage value. Based on the specific magnitude relationship of the voltage value, it is determined which phase line among the three phase lines is reversely connected to the neutral line, which facilitates subsequent steps to quickly handle the reverse connection fault.
  • FIG. 8 shows a schematic block diagram of a phase line and neutral line reverse connection detection device 800 according to some embodiments of the present disclosure.
  • the phase line and neutral line reverse connection detection device 800 is used in a three-phase rectification circuit of a variable frequency air conditioner.
  • the three-phase rectification circuit includes The neutral line, the DC bus, the three phase lines and the first relay, the second relay and the third relay respectively located on each phase line.
  • the detection device includes: an acquisition module 802 for detecting the first relay, the second relay and the third relay. When all three relays are closed, obtain the first voltage value of the DC bus; the acquisition module 802 is also used to obtain the current voltage value of the DC bus when any relay is disconnected; the processing module 804 is used to obtain the first voltage value of the DC bus when any relay is disconnected. If the value is not equal to the current voltage value, determine that a phase line is reversely connected to the neutral line.
  • the above-mentioned three-phase rectifier circuit is the basic power supply circuit of the inverter air conditioner.
  • the above-mentioned phase lines are used to indicate the AC bus of the basic power supply circuit.
  • the above-mentioned first relay, the second relay and the third relay are respectively arranged on the above-mentioned three phases. Online, used to control the disconnection and connection of the above three phase lines and the three-phase rectifier circuit.
  • the acquisition module 802 first acquires the current voltage value of the DC bus, that is, the first voltage value, when the first relay, the second relay, and the third relay are all closed. Specifically, when the above-mentioned first relay, the above-mentioned second relay and the above-mentioned third relay are all in a closed state, regardless of whether there is a reverse connection between the phase line and the neutral line in the three-phase rectifier circuit, the obtained first voltage value equal to the phase-to-phase voltage times or equal to the phase-to-line voltage times.
  • the acquisition module 802 acquires the current voltage value of the DC bus, that is, it acquires only the above-mentioned first relay to be disconnected, or only the above-mentioned second relay to be disconnected, or only the above-mentioned second relay is controlled to be disconnected.
  • the voltage value of the DC bus when the third relay is disconnected is disconnected.
  • the acquisition module 802 needs to acquire the current voltage value of the DC bus when any relay is disconnected, so that the processing module 804 in subsequent steps can determine whether there is an inversion between any phase line and the neutral line in the three-phase rectifier circuit based on the current voltage value. connection situation.
  • a voltage sensor is provided on the DC bus, and the acquisition module 802 can obtain the first voltage value and the current voltage value through the voltage sensor.
  • the processing module 804 determines the wiring status of any one of the three phase lines and the neutral line according to the above-mentioned first voltage value and the above-mentioned current voltage value, that is, it determines whether one of the three phase lines has a reverse connection with the neutral line. Condition. Specifically, when the first voltage value and the current voltage value are not equal, it is determined that one phase line and the neutral line are reversely connected.
  • the processing module 804 can determine whether the current voltage value of the DC bus when the relay on any phase line drops to times the phase voltage to determine whether any phase line and the neutral line are reversely connected. Therefore, the detection device can determine whether one of the three phase lines and the neutral line are reversely connected based on the above-mentioned first voltage value and the above-mentioned current voltage value. .
  • the acquisition module 802 first acquires the first voltage value when the first relay, the second relay and the third relay are all in a closed state; when any of the relays is turned off , obtain the above-mentioned current voltage value; the processing module 804 determines whether one of the three phase lines is reversely connected to the neutral line according to the above-mentioned first voltage value and the above-mentioned current voltage value.
  • the connection status judgment of any phase line and neutral line can be realized only through the existing three-phase rectifier circuit of the inverter air conditioner. , which facilitates the miniaturization and lightweight of the power circuit of the inverter air conditioner, and at the same time can reduce the production cost of the power circuit of the inverter air conditioner.
  • phase line and neutral line reverse connection detection device 800 may also have the following additional technical features:
  • the acquisition module 802 is also used to acquire the second voltage value of the DC bus when only the first relay is disconnected, and acquire the third voltage of the DC bus when only the second relay is disconnected. value, when only the third relay is disconnected, obtain the fourth voltage value of the DC bus; the processing module 804 is also used to confirm based on the first voltage value, the second voltage value, the third voltage value and the fourth voltage value. The wiring status of any phase line and neutral line.
  • the processing device determines that a phase line and the neutral line are reversely connected, it can also determine which phase line and neutral line are reversely connected.
  • the specific method is: first, through the acquisition module 802, only When the above-mentioned first relay is disconnected, the second voltage value of the DC bus is obtained; when only the above-mentioned second relay is disconnected, the third voltage value of the DC bus is obtained; when only the third relay is disconnected, the third voltage value of the DC bus is obtained. Four voltage values.
  • processing module 804 determines the wiring status of any one of the phase lines and the neutral line among the three phase lines according to the above-mentioned first voltage value, the above-mentioned second voltage value, the above-mentioned third voltage value and the above-mentioned fourth voltage value, that is, determines the connection status of the three phase lines. Which phase line and neutral line in the line are reversely connected?
  • the processing module 804 can obtain the second voltage value, the third voltage value and the fourth voltage value respectively when the acquisition module 802 only disconnects the above-mentioned first relay, the above-mentioned second relay or the above-mentioned third relay, and determines three Which phase line and neutral line are reversely connected among the phase lines.
  • the processing module 804 can only disconnect the first relay, the second relay or the third relay respectively when it is determined that one phase line and the neutral line are reversely connected in the three-phase rectification circuit.
  • the second voltage value, the third voltage value and the fourth voltage value obtained respectively determine the wiring status of any one of the three phase lines and the neutral line. It is realized that there is no need to set up an additional three-phase detection circuit in the power circuit of the inverter air conditioner.
  • the wiring status of any phase line and the neutral line can be judged only through the existing three-phase rectifier circuit of the inverter air conditioner, which facilitates the power supply of the inverter air conditioner. Miniaturization and lightweight of circuits.
  • the processing module 804 is also used to confirm that the phase line where the first relay is located is reversely connected to the neutral line when the third voltage value and the fourth voltage value are both less than the first voltage value.
  • the process by which the processing module 804 determines the connection status of any of the three phase lines and the neutral line in the three-phase rectifier circuit of the inverter air conditioner is: the processing module 804 determines the above-mentioned second voltage value and the above-mentioned third voltage value. and a voltage value smaller than the first voltage value among the above-mentioned fourth voltage values.
  • the processing module 804 determines that both the third voltage value and the fourth voltage value are less than the first voltage value, the processing module 804 determines that the phase line and the neutral line where the first relay is located are reversely connected. .
  • the above-mentioned third voltage value and the above-mentioned fourth voltage value are less than the above-mentioned first voltage value, it indicates the voltage value of the DC bus when only the second relay is disconnected, or the voltage value of the DC bus when only the third relay is disconnected.
  • the voltage value is determined by the normal The phase voltage drops to Double the phase voltage, that is, the phase line where the second relay and the third relay are located are not reversely connected to the neutral line. Therefore, it can be determined that the phase line where the first relay is located is reversely connected to the neutral line.
  • the processing module 804 can calculate the above-mentioned second voltage value, the above-mentioned third voltage value, and the above-mentioned fourth voltage value.
  • the specific magnitude relationship of the first voltage value determines which of the three phase lines is reversely connected to the neutral line, which facilitates subsequent steps to quickly handle the reverse connection fault.
  • the processing module 804 is also used to confirm that the phase line where the second relay is located is reversely connected to the neutral line when the second voltage value and the fourth voltage value are both less than the first voltage value.
  • the process by which the processing module 804 determines the connection status of any of the three phase lines and the neutral line in the three-phase rectifier circuit of the inverter air conditioner is: the processing module 804 determines the above-mentioned second voltage value and the above-mentioned third voltage value. and a voltage value smaller than the first voltage value among the above-mentioned fourth voltage values.
  • the processing module 804 determines that both the above-mentioned second voltage value and the above-mentioned fourth voltage value are less than the above-mentioned third voltage value. In the case of a voltage value, the processing module 804 determines that the phase line and the neutral line where the second relay is located are reversely connected.
  • the above-mentioned second voltage value and the above-mentioned fourth voltage value are both smaller than the above-mentioned first voltage value, it indicates that the voltage value of the DC bus when only the first relay is disconnected, or the DC bus voltage value when only the third relay is disconnected.
  • the bus voltage value is changed from the normal
  • the phase voltage drops to Double the phase voltage, that is, the phase line where the first relay and the third relay are located are not reversely connected to the neutral line. Therefore, it can be determined that the phase line where the second relay is located is reversely connected to the neutral line.
  • the processing module 804 can calculate the above-mentioned second voltage value, the above-mentioned third voltage value, and the above-mentioned fourth voltage value.
  • the specific magnitude relationship of the first voltage value determines which of the three phase lines is reversely connected to the neutral line, which facilitates subsequent steps to quickly handle the reverse connection fault.
  • the processing module 804 is also used to confirm that the phase line where the third relay is located is reversely connected to the neutral line when the second voltage value and the third voltage value are less than the first voltage value.
  • the process by which the processing module 804 determines the connection status of any of the three phase lines and the neutral line in the three-phase rectifier circuit of the inverter air conditioner is: the processing module 804 determines the above-mentioned second voltage value and the above-mentioned third voltage value. and a voltage value smaller than the first voltage value among the above-mentioned fourth voltage values.
  • the processing module 804 determines that both the second voltage value and the third voltage value are less than the first voltage value, the processing module 804 determines that the phase line and the neutral line where the third relay is located are reversely connected. .
  • the above-mentioned second voltage value and the above-mentioned third voltage value are both smaller than the above-mentioned first voltage value, it indicates that the voltage value of the DC bus when only the first relay is disconnected, or the DC bus voltage value when only the second relay is disconnected.
  • the bus voltage value is changed from the normal
  • the phase voltage drops to Double the phase voltage, that is, the phase line where the first relay and the second relay are located is not reversely connected to the neutral line. Therefore, it can be determined that the phase line where the third relay is located is reversely connected to the neutral line.
  • the processing module 804 can calculate the above-mentioned second voltage value, the above-mentioned third voltage value, and the above-mentioned fourth voltage value.
  • the specific magnitude relationship of the first voltage value determines which of the three phase lines is reversely connected to the neutral line, which facilitates subsequent steps to quickly handle the reverse connection fault.
  • FIG. 9 shows a schematic block diagram of a phase line and neutral line reverse connection detection device 900 according to some embodiments of the present disclosure, wherein the phase line and neutral line reverse connection detection device 900 includes: a memory 902, and a program or instruction is stored in the memory 902 ; Processor 904.
  • the processor 904 executes the program or instructions stored in the memory 902 to implement the steps of the phase line and neutral line reverse connection detection method proposed in the above embodiments of the present disclosure. All the beneficial technical effects of the detection method of line-to-neutral reverse connection will not be described in detail here.
  • a readable storage medium on which a program or instructions are stored.
  • the program or instructions are executed by a processor, the phase-to-neutral reverse connection as proposed in the above embodiments of the present disclosure is realized. Detection method. Therefore, the readable storage medium has all the beneficial effects of the phase line and neutral line reverse connection detection method proposed in the above embodiments of the present disclosure, which will not be described again here.
  • variable frequency air conditioner including a phase line and neutral line reverse connection detection device as proposed in the above embodiments of the present disclosure, and/or a readable storage medium as proposed in the above embodiments of the present disclosure.
  • the variable frequency air conditioner has all the beneficial effects of the phase line and neutral line reverse connection detection device proposed in the above embodiments of the present disclosure and/or the readable storage medium proposed in the above embodiments of the present disclosure, which will not be described again here.
  • connection can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediary.
  • connection can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediary.
  • the terms "one embodiment,””someembodiments,””specificembodiments,” etc. mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in the disclosure. to One less embodiment or example.
  • schematic representations of the above terms do not necessarily refer to the same embodiment or example.
  • the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Abstract

一种相线零线反接的检测方法、装置、存储介质和变频空调，该检测方法用于变频空调的三相整流电路，三相整流电路包括零线（N）、直流母线（L4）、三条相线（L1、L2、L3）和分别位于每条相线上的第一继电器（RY1）、第二继电器（RY2）和第三继电器（RY3），该检测方法包括：在第一继电器（RY1）、第二继电器（RY2）和第三继电器（RY3）均闭合的情况下，获取直流母线（L4）的第一电压值（S202）；在任一继电器断开的情况下，获取直流母线（L4）的当前电压值（S204）；在第一电压值不等于当前电压值的情况下，确定一条相线与零线反接（S206）。

Description

相线零线反接的检测方法、装置、存储介质和变频空调
相关申请的交叉引用
本申请要求于2022年06月02日提交的申请号为202210619652.8，名称为“相线零线反接的检测方法、装置、存储介质和变频空调”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本公开涉及电源适应性技术领域，具体而言，涉及一种相线零线反接的检测方法、装置、存储介质和变频空调。
背景技术
相关技术中，为了避免变频空调的相线和零线接反，通常会使用如附图1所示的三相检测电路进行检测，其原理是根据三相相线对零线电压周期性变化时通过光耦生成的相位角进行判断，采用这种电路虽然成本不高，但其占用面积大，且需要占用主控芯片三个特殊功能引脚，不利于主控芯片的小型化和轻量化。
公开内容
本公开旨在至少解决相关技术中存在的技术问题之一。
为此，本公开的一些实施例提出一种相线零线反接的检测方法。
本公开的一些实施例提出一种相线零线反接的检测装置。
本公开的一些实施例提出一种相线零线反接的检测装置。
本公开的一些实施例提出一种可读存储介质。
本公开的一些实施例提出一种变频空调。
有鉴于此，根据本公开的一些实施例，提出了一种相线零线反接的检测方法，用于变频空调的三相整流电路，三相整流电路包括零线、直流母线、三条相线和分别位于每条相线上的第一继电器、第二继电器和第三继电器，检测方法包括：在第一继电器、第二继电器和第三继电器均闭合的情况下，获取直流母线的第一电压值；在任一继电器断开的情况下，获取直流母线的当前电压值；在第一电压值不等于当前电压值的情况下，确定一条相线与零线反接。
需要说明的是，本公开所提出的相线零线反接的检测方法主要用于对变频空调的三相整流电路，其执行主体可以是相线零线反接的检测装置，为了更加清楚的对本公开提出的相线零线反接的检测方法进行说明，下面技术方案中以相线零线反接的检测方法的执行主体为相线零线反接的检测装置进行示例性说明。
在该技术方案中，上述三相整流电路为变频空调的基础供电电路，上述相线用于指示基础供电电路的交流母线，上述第一继电器、第二继电器和第三继电器分别设置在上述三条相线上，用于控制上述三条相线与三相整流电路的断开和连接。
具体地，检测装置首先控制上述第一继电器、上述第二继电器和上述第三继电器闭合，然后获取直流母线当前的电压值，即上述第一电压值。具体而言，在上述第一继电器、上述第二继电器和上述第三继电器均处于闭合状态时，无论三相整流电路中是否存在相线和零线反接的情况，获取的上述第一电压值均等于相线相电压的倍或者等于相线线电压的倍。
进一步地，检测装置断开任一上述继电器的情况下，获取直流母线当前的电压值，即获取仅控制上述第一继电器断开，或仅控制上述第二继电器断开，或仅控制上述第三 继电器断开时，直流母线的电压值。
具体而言，如果上述三相整流电路中存在任一相线和零线反接的情况，断开上述任一继电器，上述直流母线的电压值会从由倍相电压下降到倍相电压。因此，检测装置需要控制任一继电器断开，并获取直流母线的当前电压值，以便于后续步骤根据当前电压值判断三相整流电路中是否存在任一相线和零线反接的情况。
需要说明的是，在上述直流母线上设置有电压传感器，检测装置可以通过该电压传感器获取上述第一电压值和上述当前电压值。
进一步地，检测装置根据上述第一电压值和上述当前电压值判断三条相线中任一条相线和零线的接线状态，即判断三条相线中是否存在一条相线和零线反接的情况。具体地，在上述第一电压值和上述当前电压值不相等的情况下，确定存在一条相线与零线反接的情况。
具体而言，检测装置能够根据任一相线上继电器断开时的直流母线的当前电压值是否下降至倍相电压，确定任一相线和零线是否存在反接的情况，因此，检测装置能够根据上述第一电压值和上述当前电压值判断三条相线中一条相线和零线是否存在反接。
在该技术方案中，检测装置首先在上述第一继电器、上述第二继电器以及上述第三继电器均处于闭合状态的情况下，获取上述第一电压值；在断开任一上述继电器的情况下，获取上述当前电压值；然后根据上述第一电压值和上述当前电压值判断三条相线中是否存在一条相线和零线反接的情况。在本公开的技术方案中，无需在变频空调的电源电路中另外设置三相检测电路，仅通过现有的变频空调的三相整流电路即可实现任一相线和零线的接线状态判断，便于变频空调的电源电路的小型化和轻量化，同时能够降低变频空调的电源电路的生产成本。
此外，根据本公开的上述技术方案提出的相线零线反接的检测方法，还可以具有以下附加技术特征：
在上述技术方案中，在确定一条相线与零线反接之后，检测方法还包括：在仅第一继电器断开的情况下，获取直流母线的第二电压值，在仅第二继电器断开的情况下，获取直流母线的第三电压值，在仅第三继电器断开的情况下，获取直流母线的第四电压值；根据第一电压值、第二电压值、第三电压值和第四电压值，确认任一相线和零线的接线状态。
在该技术方案中，检测装置确定一条相线与零线存在的反接的情况后，还可以判断具体哪条相线和零线反接，其具体的方式为：检测装置仅控制上述第一继电器断开，并获取直流母线此时的电压值，即上述第二电压值；检测装置仅控制上述第二继电器断开，并获取直流母线此时的电压值，即上述第三电压值；检测装置仅控制上述第三继电器断开，并获取直流母线此时的电压值，即上述第四电压值。
进一步地，检测装置根据上述第一电压值、上述第二电压值、上述第三电压值和上述第四电压值判断三条相线中任一条相线和零线的接线状态，即判断三条相线中具体哪条相线和零线存在反接的情况。
具体而言，如果上述三相整流电路中一条相线和零线反接的情况，断开上述第一继电器、上述第二继电器或上述第三继电器，上述直流母线的电压值会从由倍相电压下降到倍相电压。因此，检测装置可以根据分别仅断开上述第一继电器、上述第二继电器或上述第三继电器时，分别的获取第二电压值、第三电压值和第四电压值，判断三条相线中具体哪条相线和零线反接。
在该技术方案中，检测装置能够在确定三相整流电路中存在一条相线与零线反接的情况下，通过分别仅断开上述第一继电器、上述第二继电器或上述第三继电器时，分别获取的第二电压值、第三电压值和第四电压值判断三条相线中任一条相线和零线的接线状态。实现了无需在变频空调的电源电路中另外设置三相检测电路，仅通过现有的变频空调的三相整流电路即可实现任一相线和零线的接线状态的判断，便于变频空调的电源电路的小型化和轻量化。
在上述技术方案中，根据第一电压值、第二电压值、第三电压值和第四电压值，确认任一相线和零线的接线状态的步骤具体包括：在第三电压值和第四电压值均小于第一电压值的情况下，确认第一继电器所在的相线与零线反接。
在该技术方案中，检测装置确定变频空调的三相整流电路中三条相线任一相线与零线的接线状态的过程为：检测装置确定上述第二电压值、上述第三电压值以及上述第四电压值中小于上述第一电压值的电压值。
具体地，在检测装置判断得出上述第三电压值及上述第四电压值均小于上述第一电压值情况下，检测装置确定第一继电器所在的相线与零线存在反接的情况。
具体而言，如果上述第三电压值及上述第四电压值小于上述第一电压值，则表明仅第二继电器断开时的直流母线的电压值，或仅第三继电器断开时的直流母线的电压值由正常的倍相电压下降到倍相电压，即第二继电器和第三继电器所在的相线不存在与零线反接的情况，因此，可以确定是第一继电器所在的相线存在与零线反接的情况。
在该技术方案中，在确定变频空调的三相整流电路存在一条相线和零线反接后，检测装置能够根据上述第二电压值、上述第三电压值及上述第四电压值与上述第一电压值的具体大小关系，确定出三条相线中具体哪条相线与零线反接，便于后续步骤快速的处理该反接故障。
在上述技术方案中，根据第一电压值、第二电压值、第三电压值和第四电压值，确认任一相线和零线的接线状态的步骤具体包括：在第二电压值和第四电压值均小于第一电压值的情况下，确认第二继电器所在的相线与零线反接。
在该技术方案中，检测装置确定变频空调的三相整流电路中三条相线任一相线与零线的接线状态的过程为：检测装置确定上述第二电压值、上述第三电压值以及上述第四电压值中小于上述第一电压值的电压值。
具体地，在检测装置判断得出上述第二电压值及上述第四电压值均小于上述第一电压值情况下，检测装置确定第二继电器所在的相线与零线存在反接的情况。
具体而言，如果上述第二电压值及上述第四电压值均小于上述第一电压值，则表明仅第一继电器断开时的直流母线的电压值，或仅第三继电器断开时的直流母线的电压值由正常的倍相电压下降到倍相电压，即第一继电器和第三继电器所在的相线不存在与零线反接的情况，因此，可以确定是第二继电器所在的相线存在与零线反接的情况。
在该技术方案中，在确定变频空调的三相整流电路存在一条相线和零线反接后，检测装置能够根据上述第二电压值、上述第三电压值及上述第四电压值与上述第一电压值的具体大小关系，确定出三条相线中具体哪条相线与零线反接，便于后续步骤快速的处理该反接故障。
在上述技术方案中，根据第一电压值、第二电压值、第三电压值和第四电压值，确认任一相线和零线的接线状态的步骤具体包括：在第二电压值和第三电压值小于第一电压值的情况下，确认第三继电器所在的相线与零线反接。
在该技术方案中，检测装置确定变频空调的三相整流电路中三条相线任一相线与零线的接线状态的过程为：检测装置确定上述第二电压值、上述第三电压值以及上述第四电压值中小于上述第一电压值的电压值。
具体地，在检测装置判断得出上述第二电压值及上述第三电压值均小于上述第一电压值情况下，检测装置确定第三继电器所在的相线与零线存在反接的情况。
具体而言，如果上述第二电压值及上述第三电压值均小于上述第一电压值，则表明仅第一继电器断开时的直流母线的电压值，或仅第二继电器断开时的直流母线的电压值由正常的倍相电压下降到倍相电压，即第一继电器和第二继电器所在的相线不存在与零线反接的情况，因此，可以确定是第三继电器所在的相线存在与零线反接的情况。
在该技术方案中，在确定变频空调的三相整流电路存在一条相线和零线反接后，检测装置能够根据上述第二电压值、上述第三电压值及上述第四电压值与上述第一电压值的具体大小关系，确定出三条相线中具体哪条相线与零线反接，便于后续步骤快速的处理该反接故障。
根据本公开的一些实施例，提出了一种相线零线反接的检测装置，用于变频空调的三相整流电路，三相整流电路包括零线、直流母线、三条相线和分别位于每条相线上的第一继电器、第二继电器和第三继电器，检测装置包括：获取模块，用于在第一继电器、第二继电器和第三继电器均闭合的情况下，获取直流母线的第一电压值；获取模块还用于在任一继电器断开的情况下，获取直流母线的当前电压值；处理模块，用于在第一电压值不等于当前电压值的情况下，确定一条相线与零线反接。
在该技术方案中，上述三相整流电路为变频空调的基础供电电路，上述相线用于指示基础供电电路的交流母线，上述第一继电器、第二继电器和第三继电器分别设置在上述三条相线上，用于控制上述三条相线与三相整流电路的断开和连接。
具体地，获取模块首先在上述第一继电器、上述第二继电器和上述第三继电器均闭合的情况下，获取直流母线当前的电压值，即上述第一电压值。具体而言，在上述第一继电器、上述第二继电器和上述第三继电器均处于闭合状态时，无论三相整流电路中是否存在相线和零线反接的情况，获取的上述第一电压值均等于相线相电压的倍或者等于相线线电压的倍。
进一步地，获取模块在断开任一上述继电器的情况下，获取直流母线当前的电压值，即获取仅控制上述第一继电器断开，或仅控制上述第二继电器断开，或仅控制上述第三继电器断开时，直流母线的电压值。
具体而言，如果上述三相整流电路中存在任一相线和零线反接的情况，断开上述任一继电器，上述直流母线的电压值会从由倍相电压下降到倍相电压。因此，获取模块需要在任一继电器断开的情况下，获取直流母线的当前电压值，以便于后续步骤处理模块根据当前电压值判断三相整流电路中是否存在任一相线和零线反接的情况。
需要说明的是，在上述直流母线上设置有电压传感器，获取模块可以通过该电压传感器获取上述第一电压值和上述当前电压值。
进一步地，处理模块根据上述第一电压值和上述当前电压值判断三条相线中任一条相线和零线的接线状态，即判断三条相线中是否存在一条相线和零线反接的情况。具体地，在上述第一电压值和上述当前电压值不相等的情况下，确定存在一条相线与零线反接的情况。
具体而言，处理模块能够根据任一相线上继电器断开时的直流母线的当前电压值是否下降至倍相电压，确定任一相线和零线是否存在反接的情况，因此，检测装置能够根据上述第一电压值和上述当前电压值判断三条相线中一条相线和零线是否存在反接。
在该技术方案中，获取模块首先在上述第一继电器、上述第二继电器以及上述第三继电器均处于闭合状态的情况下，获取上述第一电压值；在断开任一上述继电器的情况下，获取上述当前电压值；处理模块根据上述第一电压值和上述当前电压值判断三条相线中是否存在一条相线和零线反接的情况。在本公开的技术方案中，无需在变频空调的电源电路中另外设置三相检测电路，仅通过现有的变频空调的三相整流电路即可实现任一相线和零线的接线状态判断，便于变频空调的电源电路的小型化和轻量化，同时能够降低变频空调的电源电路的生产成本。
此外，根据本公开的上述技术方案提出的相线零线反接的检测装置，还可以具有以下附加技术特征：
在上述技术方案中，获取模块还用于在仅第一继电器断开的情况下，获取直流母线的第二电压值，在仅第二继电器断开的情况下，获取直流母线的第三电压值，在仅第三继电器断开的情况下，获取直流母线的第四电压值；处理模块还用于根据第一电压值、第二电压值、第三电压值和第四电压值，确认任一相线和零线的接线状态。
在该技术方案中，处理装置确定一条相线与零线存在的反接的情况后，还可以判断具体哪条相线和零线反接，其具体的方式为：首先通过获取模块在仅上述第一继电器断开时，获取直流母线的第二电压值；在仅上述第二继电器断开时，获取直流母线的第三电压值；在仅第三继电器断开时，获取直流母线的第四电压值。
进一步地，处理模块根据上述第一电压值、上述第二电压值、上述第三电压值和上述第四电压值判断三条相线中任一条相线和零线的接线状态，即判断三条相线中具体哪条相线和零线存在反接的情况。
具体而言，如果上述三相整流电路中一条相线和零线反接的情况，断开上述第一继电器、上述第二继电器或上述第三继电器，上述直流母线的电压值会从由倍相电压下降到倍相电压。因此，处理模块可以根据获取模块分别仅断开上述第一继电器、上述第二继电器或上述第三继电器时，分别的获取第二电压值、第三电压值和第四电压值，判断三条相线中具体哪条相线和零线反接。
在该技术方案中，处理模块能够在确定三相整流电路中存在一条相线与零线反接的情况下，通过分别仅断开上述第一继电器、上述第二继电器或上述第三继电器时，分别获取的第二电压值、第三电压值和第四电压值判断三条相线中任一条相线和零线的接线状态。实现了无需在变频空调的电源电路中另外设置三相检测电路，仅通过现有的变频空调的三相整流电路即可实现任一相线和零线的接线状态的判断，便于变频空调的电源电路的小型化和轻量化。
在上述技术方案中，处理模块还用于在第三电压值和第四电压值均小于第一电压值的情况下，确认第一继电器所在的相线与零线反接。
在该技术方案中，处理模块确定变频空调的三相整流电路中三条相线任一相线与零线的接线状态的过程为：处理模块确定上述第二电压值、上述第三电压值以及上述第四电压值中小于上述第一电压值的电压值。
具体地，在处理模块判断得出上述第三电压值及上述第四电压值均小于上述第一电压值情况下，处理模块确定第一继电器所在的相线与零线存在反接的情况。
具体而言，如果上述第三电压值及上述第四电压值小于上述第一电压值，则表明仅第二继电器断开时的直流母线的电压值，或仅第三继电器断开时的直流母线的电压值由正常的倍相电压下降到倍相电压，即第二继电器和第三继电器所在的相线不存在与零线反接的情况，因此，可以确定是第一继电器所在的相线存在与零线反接的情况。
在该技术方案中，在确定变频空调的三相整流电路存在一条相线和零线反接后，处 理模块能够根据上述第二电压值、上述第三电压值及上述第四电压值与上述第一电压值的具体大小关系，确定出三条相线中具体哪条相线与零线反接，便于后续步骤快速的处理该反接故障。
在上述技术方案中，处理模块还用于在第二电压值和第四电压值均小于第一电压值的情况下，确认第二继电器所在的相线与零线反接。
在该技术方案中，处理模块确定变频空调的三相整流电路中三条相线任一相线与零线的接线状态的过程为：处理模块确定上述第二电压值、上述第三电压值以及上述第四电压值中小于上述第一电压值的电压值。
具体地，在处理模块判断得出上述第二电压值及上述第四电压值均小于上述第一电压值情况下，处理模块确定第二继电器所在的相线与零线存在反接的情况。
具体而言，如果上述第二电压值及上述第四电压值均小于上述第一电压值，则表明仅第一继电器断开时的直流母线的电压值，或仅第三继电器断开时的直流母线的电压值由正常的倍相电压下降到倍相电压，即第一继电器和第三继电器所在的相线不存在与零线反接的情况，因此，可以确定是第二继电器所在的相线存在与零线反接的情况。
在该技术方案中，在确定变频空调的三相整流电路存在一条相线和零线反接后，处理模块能够根据上述第二电压值、上述第三电压值及上述第四电压值与上述第一电压值的具体大小关系，确定出三条相线中具体哪条相线与零线反接，便于后续步骤快速的处理该反接故障。
在上述技术方案中，处理模块还用于在第二电压值和第三电压值小于第一电压值的情况下，确认第三继电器所在的相线与零线反接。
在该技术方案中，处理模块确定变频空调的三相整流电路中三条相线任一相线与零线的接线状态的过程为：处理模块确定上述第二电压值、上述第三电压值以及上述第四电压值中小于上述第一电压值的电压值。
具体地，在处理模块判断得出上述第二电压值及上述第三电压值均小于上述第一电压值情况下，处理模块确定第三继电器所在的相线与零线存在反接的情况。
具体而言，如果上述第二电压值及上述第三电压值均小于上述第一电压值，则表明仅第一继电器断开时的直流母线的电压值，或仅第二继电器断开时的直流母线的电压值由正常的倍相电压下降到倍相电压，即第一继电器和第二继电器所在的相线不存在与零线反接的情况，因此，可以确定是第三继电器所在的相线存在与零线反接的情况。
在该技术方案中，在确定变频空调的三相整流电路存在一条相线和零线反接后，处理模块能够根据上述第二电压值、上述第三电压值及上述第四电压值与上述第一电压值的具体大小关系，确定出三条相线中具体哪条相线与零线反接，便于后续步骤快速的处理该反接故障。
根据本公开一些实施例提出了一种相线零线反接的检测装置，检测装置包括：存储器，存储器中存储有程序或指令；处理器，处理器执行存储在存储器中的程序或指令以实现如本公开上述技术方案提出的相线零线反接的检测方法的步骤，因而具有本公开上述技术方案提出的相线零线反接的检测方法的全部有益技术效果，在此不再做过多赘述。
根据本公开一些实施例提出了一种可读存储介质，其上存储有程序或指令，程序或指令被处理器执行时实现如本公开上述技术方案提出的相线零线反接的检测方法。因此，该可读存储介质具备本公开上述技术方案提出的相线零线反接的检测方法的全部有益效果，在此不再赘述。
根据本公开一些实施例提出了一种变频空调，包括如本公开上述技术方案提出的相线零线反接的检测装置，和/或如本公开上述技术方案提出的可读存储介质，因此，该 变频空调具备本公开上述技术方案提出的相线零线反接的检测装置和/或本公开上述技术方案提出的可读存储介质的全部有益效果，在此不再赘述。
本公开的附加方面和优点将在下面的描述部分中变得明显，或通过本公开的实践了解到。
附图说明
本公开的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1示出了相关技术中的三相检测电路的示意图；
图2示出了本公开一些实施例的相线零线反接的检测方法的流程示意图之一；
图3示出了本公开一些实施例的变频空调的三相整流电路的示意图；
图4示出了本公开一些实施例的相线零线反接的检测方法的流程示意图之二；
图5示出了本公开一些实施例的相线零线反接的检测方法的流程示意图之三；
图6示出了本公开一些实施例的相线零线反接的检测方法的流程示意图之四；
图7示出了本公开一些实施例的相线零线反接的检测方法的流程示意图之五；
图8示出了本公开一些实施例的相线零线反接的检测装置的示意框图之一；
图9示出了本公开一些实施例的相线零线反接的检测装置的示意框图之二。
具体实施方式
为了能够更清楚地理解本公开的上述目的、特征和优点，下面结合附图和具体实施方式对本公开进行进一步的详细描述。需要说明的是，在不冲突的情况下，本公开的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本公开，但是，本公开还可以采用其他不同于在此描述的其他方式来实施，因此，本公开的保护范围并不限于下面公开的具体实施例的限制。
下面结合图1至图9，通过具体的实施例及其应用场景对本公开一些实施例提供的相线零线反接的检测方法、装置、存储介质和变频空调进行详细地说明。
图2示出了本公开一些实施例的相线零线反接的检测方法的流程示意图，其中，该检测方法用于变频空调的三相整流电路，三相整流电路包括零线、直流母线、三条相线和分别位于每条相线上的第一继电器、第二继电器和第三继电器，该检测方法包括：
步骤S202，在第一继电器、第二继电器和第三继电器均闭合的情况下，获取直流母线的第一电压值；
步骤S204，在任一继电器断开的情况下，获取直流母线的当前电压值；
步骤S206，在第一电压值不等于当前电压值的情况下，确定一条相线与零线反接。
需要说明的是，本公开所提出的相线零线反接的检测方法主要用于对变频空调的三相整流电路，其执行主体可以是相线零线反接的检测装置，为了更加清楚的对本公开提出的相线零线反接的检测方法进行说明，下面实施例中以相线零线反接的检测方法的执行主体为相线零线反接的检测装置进行示例性说明。
示例性的，变频空调的三相整流电路如图3所示，其中，零线用N表示，三条相线分别用L1、L2和L3表示，直流母线用L4表示，第一继电器用RY1表示，设置于L1上，第二继电器用RY2表示，设置于L2上，第三继电器用RY3表示，设置于L3上。
在该实施例中，上述三相整流电路为变频空调的基础供电电路，上述相线用于指示基础供电电路的交流母线，上述第一继电器、第二继电器和第三继电器分别设置在上述三条相线上，用于控制上述三条相线与三相整流电路的断开和连接。
具体地，检测装置首先控制上述第一继电器、上述第二继电器和上述第三继电器闭合，然后获取直流母线当前的电压值，即上述第一电压值。具体而言，在上述第一继电 器、上述第二继电器和上述第三继电器均处于闭合状态时，无论三相整流电路中是否存在相线和零线反接的情况，获取的上述第一电压值均等于相线相电压的倍或者等于相线线电压的倍。
进一步地，检测装置断开任一上述继电器的情况下，获取直流母线当前的电压值，即获取仅控制上述第一继电器断开，或仅控制上述第二继电器断开，或仅控制上述第三继电器断开时，直流母线的电压值。
具体而言，如果上述三相整流电路中存在任一相线和零线反接的情况，断开上述任一继电器，上述直流母线的电压值会从由倍相电压下降到倍相电压。因此，检测装置需要控制任一继电器断开，并获取直流母线的当前电压值，以便于后续步骤根据当前电压值判断三相整流电路中是否存在任一相线和零线反接的情况。
需要说明的是，在上述直流母线上设置有电压传感器，检测装置可以通过该电压传感器获取上述第一电压值和上述当前电压值。
进一步地，检测装置根据上述第一电压值和上述当前电压值判断三条相线中任一条相线和零线的接线状态，即判断三条相线中是否存在一条相线和零线反接的情况。具体地，在上述第一电压值和上述当前电压值不相等的情况下，确定存在一条相线与零线反接的情况。
具体而言，检测装置能够根据任一相线上继电器断开时的直流母线的当前电压值是否下降至倍相电压，确定任一相线和零线是否存在反接的情况，因此，检测装置能够根据上述第一电压值和上述当前电压值判断三条相线中一条相线和零线是否存在反接。
在该实施例中，检测装置首先在上述第一继电器、上述第二继电器以及上述第三继电器均处于闭合状态的情况下，获取上述第一电压值；在断开任一上述继电器的情况下，获取上述当前电压值；然后根据上述第一电压值和上述当前电压值判断三条相线中是否存在一条相线和零线反接的情况。在本公开的一些实施例中，无需在变频空调的电源电路中另外设置三相检测电路，仅通过现有的变频空调的三相整流电路即可实现任一相线和零线的接线状态判断，便于变频空调的电源电路的小型化和轻量化，同时能够降低变频空调的电源电路的生产成本。
图4示出了本公开一些实施例的相线零线反接的检测方法的流程示意图，检测方法包括：
步骤S402，在第一继电器、第二继电器和第三继电器均闭合的情况下，获取直流母线的第一电压值；
步骤S404，在任一继电器断开的情况下，获取直流母线的当前电压值；
步骤S406，在第一电压值不等于当前电压值的情况下，确定一条相线与零线反接；
步骤S408，在仅第一继电器断开的情况下，获取直流母线的第二电压值，在仅第二继电器断开的情况下，获取直流母线的第三电压值，在仅第三继电器断开的情况下，获取直流母线的第四电压值；
步骤S410，根据第一电压值、第二电压值、第三电压值和第四电压值，确认任一相线和零线的接线状态。
在该实施例中，检测装置确定一条相线与零线存在的反接的情况后，还可以判断具体哪条相线和零线反接，其具体的方式为：检测装置仅控制上述第一继电器断开，并获取直流母线此时的电压值，即上述第二电压值；检测装置仅控制上述第二继电器断开，并获取直流母线此时的电压值，即上述第三电压值；检测装置仅控制上述第三继电器断 开，并获取直流母线此时的电压值，即上述第四电压值。
进一步地，检测装置根据上述第一电压值、上述第二电压值、上述第三电压值和上述第四电压值判断三条相线中任一条相线和零线的接线状态，即判断三条相线中具体哪条相线和零线存在反接的情况。
具体而言，如果上述三相整流电路中一条相线和零线反接的情况，断开上述第一继电器、上述第二继电器或上述第三继电器，上述直流母线的电压值会从由倍相电压下降到倍相电压。因此，检测装置可以根据分别仅断开上述第一继电器、上述第二继电器或上述第三继电器时，分别的获取第二电压值、第三电压值和第四电压值，判断三条相线中具体哪条相线和零线反接。
在该实施例中，检测装置能够在确定三相整流电路中存在一条相线与零线反接的情况下，通过分别仅断开上述第一继电器、上述第二继电器或上述第三继电器时，分别获取的第二电压值、第三电压值和第四电压值判断三条相线中任一条相线和零线的接线状态。实现了无需在变频空调的电源电路中另外设置三相检测电路，仅通过现有的变频空调的三相整流电路即可实现任一相线和零线的接线状态的判断，便于变频空调的电源电路的小型化和轻量化。
图5示出了本公开一些实施例的相线零线反接的检测方法的流程示意图，检测方法包括：
步骤S502，在第一继电器、第二继电器和第三继电器均闭合的情况下，获取直流母线的第一电压值；
步骤S504，在任一继电器断开的情况下，获取直流母线的当前电压值；
步骤S506，在第一电压值不等于当前电压值的情况下，确定一条相线与零线反接；
步骤S508，在仅第一继电器断开的情况下，获取直流母线的第二电压值，在仅第二继电器断开的情况下，获取直流母线的第三电压值，在仅第三继电器断开的情况下，获取直流母线的第四电压值；
步骤S510，在第三电压值和第四电压值均小于第一电压值的情况下，确认第一继电器所在的相线与零线反接。
在该实施例中，检测装置确定变频空调的三相整流电路中三条相线任一相线与零线的接线状态的过程为：检测装置确定上述第二电压值、上述第三电压值以及上述第四电压值中小于上述第一电压值的电压值。
具体地，在检测装置判断得出上述第三电压值及上述第四电压值均小于上述第一电压值情况下，检测装置确定第一继电器所在的相线与零线存在反接的情况。
具体而言，如果上述第三电压值及上述第四电压值小于上述第一电压值，则表明仅第二继电器断开时的直流母线的电压值，或仅第三继电器断开时的直流母线的电压值由正常的倍相电压下降到倍相电压，即第二继电器和第三继电器所在的相线不存在与零线反接的情况，因此，可以确定是第一继电器所在的相线存在与零线反接的情况。
在该实施例中，在确定变频空调的三相整流电路存在一条相线和零线反接后，检测装置能够根据上述第二电压值、上述第三电压值及上述第四电压值与上述第一电压值的具体大小关系，确定出三条相线中具体哪条相线与零线反接，便于后续步骤快速的处理该反接故障。
图6示出了本公开一些实施例的相线零线反接的检测方法的流程示意图，检测方法包括：
步骤S602，在第一继电器、第二继电器和第三继电器均闭合的情况下，获取直流母线的第一电压值；
步骤S604，在任一继电器断开的情况下，获取直流母线的当前电压值；
步骤S606，在第一电压值不等于当前电压值的情况下，确定一条相线与零线反接；
步骤S608，在仅第一继电器断开的情况下，获取直流母线的第二电压值，在仅第二继电器断开的情况下，获取直流母线的第三电压值，在仅第三继电器断开的情况下，获取直流母线的第四电压值；
步骤S610，在第二电压值和第四电压值均小于第一电压值的情况下，确认第二继电器所在的相线与零线反接。
在该实施例中，检测装置确定变频空调的三相整流电路中三条相线任一相线与零线的接线状态的过程为：检测装置确定上述第二电压值、上述第三电压值以及上述第四电压值中小于上述第一电压值的电压值。
具体地，在检测装置判断得出上述第二电压值及上述第四电压值均小于上述第一电压值情况下，检测装置确定第二继电器所在的相线与零线存在反接的情况。
具体而言，如果上述第二电压值及上述第四电压值均小于上述第一电压值，则表明仅第一继电器断开时的直流母线的电压值，或仅第三继电器断开时的直流母线的电压值由正常的倍相电压下降到倍相电压，即第一继电器和第三继电器所在的相线不存在与零线反接的情况，因此，可以确定是第二继电器所在的相线存在与零线反接的情况。
在该实施例中，在确定变频空调的三相整流电路存在一条相线和零线反接后，检测装置能够根据上述第二电压值、上述第三电压值及上述第四电压值与上述第一电压值的具体大小关系，确定出三条相线中具体哪条相线与零线反接，便于后续步骤快速的处理该反接故障。
图7示出了本公开一些实施例的相线零线反接的检测方法的流程示意图，检测方法包括：
步骤S702，在第一继电器、第二继电器和第三继电器均闭合的情况下，获取直流母线的第一电压值；
步骤S704，在任一继电器断开的情况下，获取直流母线的当前电压值；
步骤S706，在第一电压值不等于当前电压值的情况下，确定一条相线与零线反接；
步骤S708，在仅第一继电器断开的情况下，获取直流母线的第二电压值，在仅第二继电器断开的情况下，获取直流母线的第三电压值，在仅第三继电器断开的情况下，获取直流母线的第四电压值；
步骤S710，在第二电压值和第三电压值小于第一电压值的情况下，确认第三继电器所在的相线与零线反接。
在该实施例中，检测装置确定变频空调的三相整流电路中三条相线任一相线与零线的接线状态的过程为：检测装置确定上述第二电压值、上述第三电压值以及上述第四电压值中小于上述第一电压值的电压值。
具体地，在检测装置判断得出上述第二电压值及上述第三电压值均小于上述第一电压值情况下，检测装置确定第三继电器所在的相线与零线存在反接的情况。
具体而言，如果上述第二电压值及上述第三电压值均小于上述第一电压值，则表明仅第一继电器断开时的直流母线的电压值，或仅第二继电器断开时的直流母线的电压值由正常的倍相电压下降到倍相电压，即第一继电器和第二继电器所在的相线不存在与零线反接的情况，因此，可以确定是第三继电器所在的相线存在与零线反接的情况。
在该实施例中，在确定变频空调的三相整流电路存在一条相线和零线反接后，检测装置能够根据上述第二电压值、上述第三电压值及上述第四电压值与上述第一电压值的具体大小关系，确定出三条相线中具体哪条相线与零线反接，便于后续步骤快速的处理该反接故障。
图8示出了本公开一些实施例的相线零线反接的检测装置的示意框图，该相线零线反接的检测装置800用于变频空调的三相整流电路，三相整流电路包括零线、直流母线、三条相线和分别位于每条相线上的第一继电器、第二继电器和第三继电器，检测装置包括：获取模块802，用于在第一继电器、第二继电器和第三继电器均闭合的情况下，获取直流母线的第一电压值；获取模块802还用于在任一继电器断开的情况下，获取直流母线的当前电压值；处理模块804，用于在第一电压值不等于当前电压值的情况下，确定一条相线与零线反接。
在该实施例中，上述三相整流电路为变频空调的基础供电电路，上述相线用于指示基础供电电路的交流母线，上述第一继电器、第二继电器和第三继电器分别设置在上述三条相线上，用于控制上述三条相线与三相整流电路的断开和连接。
具体地，获取模块802首先在上述第一继电器、上述第二继电器和上述第三继电器均闭合的情况下，获取直流母线当前的电压值，即上述第一电压值。具体而言，在上述第一继电器、上述第二继电器和上述第三继电器均处于闭合状态时，无论三相整流电路中是否存在相线和零线反接的情况，获取的上述第一电压值均等于相线相电压的倍或者等于相线线电压的倍。
进一步地，获取模块802在断开任一上述继电器的情况下，获取直流母线当前的电压值，即获取仅控制上述第一继电器断开，或仅控制上述第二继电器断开，或仅控制上述第三继电器断开时，直流母线的电压值。
具体而言，如果上述三相整流电路中存在任一相线和零线反接的情况，断开上述任一继电器，上述直流母线的电压值会从由倍相电压下降到倍相电压。因此，获取模块802需要在任一继电器断开的情况下，获取直流母线的当前电压值，以便于后续步骤处理模块804根据当前电压值判断三相整流电路中是否存在任一相线和零线反接的情况。
需要说明的是，在上述直流母线上设置有电压传感器，获取模块802可以通过该电压传感器获取上述第一电压值和上述当前电压值。
进一步地，处理模块804根据上述第一电压值和上述当前电压值判断三条相线中任一条相线和零线的接线状态，即判断三条相线中是否存在一条相线和零线反接的情况。具体地，在上述第一电压值和上述当前电压值不相等的情况下，确定存在一条相线与零线反接的情况。
具体而言，处理模块804能够根据任一相线上继电器断开时的直流母线的当前电压值是否下降至倍相电压，确定任一相线和零线是否存在反接的情况，因此，检测装置能够根据上述第一电压值和上述当前电压值判断三条相线中一条相线和零线是否存在反接。
在该实施例中，获取模块802首先在上述第一继电器、上述第二继电器以及上述第三继电器均处于闭合状态的情况下，获取上述第一电压值；在断开任一上述继电器的情况下，获取上述当前电压值；处理模块804根据上述第一电压值和上述当前电压值判断三条相线中是否存在一条相线和零线反接的情况。在本公开的一些实施例中，无需在变频空调的电源电路中另外设置三相检测电路，仅通过现有的变频空调的三相整流电路即可实现任一相线和零线的接线状态判断，便于变频空调的电源电路的小型化和轻量化，同时能够降低变频空调的电源电路的生产成本。
此外，根据本公开的上述实施例提出的相线零线反接的检测装置800，还可以具有以下附加技术特征：
在上述实施例中，获取模块802还用于在仅第一继电器断开的情况下，获取直流母线的第二电压值，在仅第二继电器断开的情况下，获取直流母线的第三电压值，在仅第三继电器断开的情况下，获取直流母线的第四电压值；处理模块804还用于根据第一电压值、第二电压值、第三电压值和第四电压值，确认任一相线和零线的接线状态。
在该实施例中，处理装置确定一条相线与零线存在的反接的情况后，还可以判断具体哪条相线和零线反接，其具体的方式为：首先通过获取模块802在仅上述第一继电器断开时，获取直流母线的第二电压值；在仅上述第二继电器断开时，获取直流母线的第三电压值；在仅第三继电器断开时，获取直流母线的第四电压值。
进一步地，处理模块804根据上述第一电压值、上述第二电压值、上述第三电压值和上述第四电压值判断三条相线中任一条相线和零线的接线状态，即判断三条相线中具体哪条相线和零线存在反接的情况。
具体而言，如果上述三相整流电路中一条相线和零线反接的情况，断开上述第一继电器、上述第二继电器或上述第三继电器，上述直流母线的电压值会从由倍相电压下降到倍相电压。因此，处理模块804可以根据获取模块802分别仅断开上述第一继电器、上述第二继电器或上述第三继电器时，分别的获取第二电压值、第三电压值和第四电压值，判断三条相线中具体哪条相线和零线反接。
在该实施例中，处理模块804能够在确定三相整流电路中存在一条相线与零线反接的情况下，通过分别仅断开上述第一继电器、上述第二继电器或上述第三继电器时，分别获取的第二电压值、第三电压值和第四电压值判断三条相线中任一条相线和零线的接线状态。实现了无需在变频空调的电源电路中另外设置三相检测电路，仅通过现有的变频空调的三相整流电路即可实现任一相线和零线的接线状态的判断，便于变频空调的电源电路的小型化和轻量化。
在上述实施例中，处理模块804还用于在第三电压值和第四电压值均小于第一电压值的情况下，确认第一继电器所在的相线与零线反接。
在该实施例中，处理模块804确定变频空调的三相整流电路中三条相线任一相线与零线的接线状态的过程为：处理模块804确定上述第二电压值、上述第三电压值以及上述第四电压值中小于上述第一电压值的电压值。
具体地，在处理模块804判断得出上述第三电压值及上述第四电压值均小于上述第一电压值情况下，处理模块804确定第一继电器所在的相线与零线存在反接的情况。
具体而言，如果上述第三电压值及上述第四电压值小于上述第一电压值，则表明仅第二继电器断开时的直流母线的电压值，或仅第三继电器断开时的直流母线的电压值由正常的倍相电压下降到倍相电压，即第二继电器和第三继电器所在的相线不存在与零线反接的情况，因此，可以确定是第一继电器所在的相线存在与零线反接的情况。
在该实施例中，在确定变频空调的三相整流电路存在一条相线和零线反接后，处理模块804能够根据上述第二电压值、上述第三电压值及上述第四电压值与上述第一电压值的具体大小关系，确定出三条相线中具体哪条相线与零线反接，便于后续步骤快速的处理该反接故障。
在上述实施例中，处理模块804还用于在第二电压值和第四电压值均小于第一电压值的情况下，确认第二继电器所在的相线与零线反接。
在该实施例中，处理模块804确定变频空调的三相整流电路中三条相线任一相线与零线的接线状态的过程为：处理模块804确定上述第二电压值、上述第三电压值以及上述第四电压值中小于上述第一电压值的电压值。
具体地，在处理模块804判断得出上述第二电压值及上述第四电压值均小于上述第 一电压值情况下，处理模块804确定第二继电器所在的相线与零线存在反接的情况。
具体而言，如果上述第二电压值及上述第四电压值均小于上述第一电压值，则表明仅第一继电器断开时的直流母线的电压值，或仅第三继电器断开时的直流母线的电压值由正常的倍相电压下降到倍相电压，即第一继电器和第三继电器所在的相线不存在与零线反接的情况，因此，可以确定是第二继电器所在的相线存在与零线反接的情况。
在该实施例中，在确定变频空调的三相整流电路存在一条相线和零线反接后，处理模块804能够根据上述第二电压值、上述第三电压值及上述第四电压值与上述第一电压值的具体大小关系，确定出三条相线中具体哪条相线与零线反接，便于后续步骤快速的处理该反接故障。
在上述实施例中，处理模块804还用于在第二电压值和第三电压值小于第一电压值的情况下，确认第三继电器所在的相线与零线反接。
在该实施例中，处理模块804确定变频空调的三相整流电路中三条相线任一相线与零线的接线状态的过程为：处理模块804确定上述第二电压值、上述第三电压值以及上述第四电压值中小于上述第一电压值的电压值。
具体地，在处理模块804判断得出上述第二电压值及上述第三电压值均小于上述第一电压值情况下，处理模块804确定第三继电器所在的相线与零线存在反接的情况。
具体而言，如果上述第二电压值及上述第三电压值均小于上述第一电压值，则表明仅第一继电器断开时的直流母线的电压值，或仅第二继电器断开时的直流母线的电压值由正常的倍相电压下降到倍相电压，即第一继电器和第二继电器所在的相线不存在与零线反接的情况，因此，可以确定是第三继电器所在的相线存在与零线反接的情况。
在该实施例中，在确定变频空调的三相整流电路存在一条相线和零线反接后，处理模块804能够根据上述第二电压值、上述第三电压值及上述第四电压值与上述第一电压值的具体大小关系，确定出三条相线中具体哪条相线与零线反接，便于后续步骤快速的处理该反接故障。
图9示出了本公开一些实施例的相线零线反接的检测装置的示意框图，其中，该相线零线反接的检测装置900包括：存储器902，存储器902中存储有程序或指令；处理器904，处理器904执行存储在存储器902中的程序或指令以实现如本公开上述实施例提出的相线零线反接的检测方法的步骤，因而具有本公开上述实施例提出的相线零线反接的检测方法的全部有益技术效果，在此不再做过多赘述。
根据本公开的一些实施例中，提出了一种可读存储介质，其上存储有程序或指令，程序或指令被处理器执行时实现如本公开上述实施例提出的相线零线反接的检测方法。因此，该可读存储介质具备本公开上述实施例提出的相线零线反接的检测方法的全部有益效果，在此不再赘述。
根据本公开的一些实施例中，提出了一种变频空调，包括如本公开上述实施例提出的相线零线反接的检测装置，和/或如本公开上述实施例提出的可读存储介质，因此，该变频空调具备本公开上述实施例提出的相线零线反接的检测装置和/或本公开上述实施例提出的可读存储介质的全部有益效果，在此不再赘述。
在本说明书的描述中，术语“第一”、“第二”仅用于描述的目的，而不能理解为指示或暗示相对重要性，除非另有明确的规定和限定；术语“连接”、“安装”、“固定”等均应做广义理解，例如，“连接”可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本公开中的具体含义。
在本说明书的描述中，术语“一个实施例”、“一些实施例”、“具体实施例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或特点包含于本公开的至 少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或实例。而且，描述的具体特征、结构、材料或特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
另外，本公开各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本公开要求的保护范围之内。
以上仅为本公开的可选实施例而已，并不用于限制本公开，对于本领域的技术人员来说，本公开可以有各种更改和变化。凡在本公开的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。

Claims (13)

  1. 一种相线零线反接的检测方法，用于变频空调的三相整流电路，所述三相整流电路包括零线、直流母线、三条相线和分别位于每条所述相线上的第一继电器、第二继电器和第三继电器，所述检测方法包括：
    在所述第一继电器、所述第二继电器和所述第三继电器均闭合的情况下，获取所述直流母线的第一电压值；
    在任一所述继电器断开的情况下，获取所述直流母线的当前电压值；
    在所述第一电压值不等于所述当前电压值的情况下，确定一条相线与零线反接。
  2. 根据权利要求1所述的相线零线反接的检测方法，其中，在所述确定一条相线与零线反接之后，还包括：
    在仅所述第一继电器断开的情况下，获取所述直流母线的第二电压值，在仅所述第二继电器断开的情况下，获取所述直流母线的第三电压值，在仅所述第三继电器断开的情况下，获取所述直流母线的第四电压值；
    根据所述第一电压值、所述第二电压值、所述第三电压值和所述第四电压值，确认任一所述相线和所述零线的接线状态。
  3. 根据权利要求2所述的相线零线反接的检测方法，其中，所述根据所述第一电压值、所述第二电压值、所述第三电压值所述第四电压值，确认任一所述相线和所述零线的接线状态，具体包括：
    在所述第三电压值和所述第四电压值均小于所述第一电压值的情况下，确认所述第一继电器所在的相线与所述零线反接。
  4. 根据权利要求2所述的相线零线反接的检测方法，其中，所述根据所述第一电压值、所述第二电压值、所述第三电压值所述第四电压值，确认任一所述相线和所述零线的接线状态，具体包括：
    在所述第二电压值和所述第四电压值均小于所述第一电压值的情况下，确认所述第二继电器所在的相线与所述零线反接。
  5. 根据权利要求2所述的相线零线反接的检测方法，其中，所述根据所述第一电压值、所述第二电压值、所述第三电压值所述第四电压值，确认任一所述相线和所述零线的接线状态，具体包括：
    在所述第二电压值和所述第三电压值小于所述第一电压值的情况下，确认所述第三继电器所在的相线与零线反接。
  6. 一种相线零线反接的检测装置，用于变频空调的三相整流电路，所述三相整流电路包括零线、直流母线、三条相线和分别位于每条所述相线上的第一继电器、第二继电器和第三继电器，所述检测装置包括：
    获取模块，用于在所述第一继电器、所述第二继电器和所述第三继电器均闭合的情况下，获取所述直流母线的第一电压值；
    所述获取模块还用于在任一所述继电器断开的情况下，获取所述直流母线的当前电压值；
    处理模块，用于在所述第一电压值不等于所述当前电压值的情况下，确定一条相线与零线反接。
  7. 根据权利要求6所述的相线零线反接的检测装置，其中，所述获取模块还用于在仅所述第一继电器断开的情况下，获取所述直流母线的第二电压值，在仅所述第二继电器断开的情况下，获取所述直流母线的第三电压值，在仅所述第三继电器断开的情况下，获取所述直流母线的第四电压值；
    所述处理模块还用于根据所述第一电压值、所述第二电压值、所述第三电压值和所述第四电压值，确认任一所述相线和所述零线的接线状态。
  8. 根据权利要求7所述的相线零线反接的检测装置，其中，所述处理模块还用于在所述第三电压值和所述第四电压值均小于所述第一电压值的情况下，确认所述第一继电器所在的相线与所述零线反接。
  9. 根据权利要求7所述的相线零线反接的检测装置，其中，所述处理模块还用于在所述第二电压值和所述第四电压值均小于所述第一电压值的情况下，确认所述第二继电器所在的相线与所述零线反接。
  10. 根据权利要求7所述的相线零线反接的检测装置，其中，所述处理模块还用于在所述第二电压值和所述第三电压值小于所述第一电压值的情况下，确认所述第三继电器所在的相线与零线反接。
  11. 一种相线零线反接的检测装置，包括：
    存储器和处理器，所述存储器存储有程序，所述处理器执行所述程序时实现如权利要求1至5中任一项所述的相线零线反接的检测方法的步骤。
  12. 一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如权利要求1至5中任一项所述的相线零线反接的检测方法的步骤。
  13. 一种变频空调，包括：
    如权利要求6至11中任一项所述的相线零线反接的检测装置；和/或
    如权利要求12所述的可读存储介质。
PCT/CN2023/094169 2022-06-02 2023-05-15 相线零线反接的检测方法、装置、存储介质和变频空调 WO2023231755A1 (zh)

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