JP2014039423A - Inverter device, inverter option device, and external power-supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve reduction in size and price, reduction in wiring man-hour, prevention of defective wiring, and improvement of serviceability.SOLUTION: The inverter device 1 according to the embodiment includes: a first inverter device 1A having a first main circuit 11 outputting an AC voltage to a first motor, a first control circuit 12 driving the first main circuit 11, a control power-supply section 13 supplying power to the first control circuit 12, and a non-contact power-feeding section 14 supplying power of the control power-supply section 13 to the outside by non-contact power-feeding; and a second inverter device 1B having a second main circuit 21 outputting an AC voltage to a second motor, a second control circuit 22 controlling the second main circuit 21, and a non-contact power-receiving section 23 receiving the power from the non-contact power-feeding section 14 by non-contact power-feeding and supplying the power to the second control circuit 22.

Description

  Embodiments described herein relate generally to an inverter device, an inverter option device, and an external power supply device.

  The inverter device is a device that drives a motor by supplying an AC voltage having an arbitrary frequency and voltage. Normally, a control power supply circuit is built in the inverter device. For connection between this inverter device and an optional unit (unit to which power is supplied from the control power supply circuit of the inverter device), wiring by a cable, a connector, or the like is required. Even when the control power supply circuit is provided outside the inverter device, it is necessary to connect the control power supply circuit and the inverter device by wiring such as a cable or a connector.

JP 2010-011699 A

  However, as described above, when the control power supply circuit is built in the inverter device, the inverter device is increased in size. For users who do not need a built-in control power supply circuit (for example, users who supply power from an external power supply device), an extra circuit is incorporated in the inverter device, which increases the cost accordingly. Resulting in.

  Also, when connecting an inverter device and an optional unit, or when connecting an inverter device and an external control power supply circuit, it is necessary to connect them by wire, so the wiring man-hours at the customer are reduced. Will increase. Furthermore, since wiring work is required, wiring failures such as connection mistakes and connection failures may occur during the work. In addition, loosening of screws over time and damage or deterioration of wires may occur, resulting in insufficient maintainability.

  The problem to be solved by the present invention is that an inverter device and an inverter option that can realize miniaturization and cost reduction, and further reduce wiring man-hours, prevent wiring defects and improve maintainability. An apparatus and an external power supply device are provided.

  The inverter device according to the embodiment includes a main circuit that outputs an AC voltage, a control circuit that controls the main circuit, a control power supply that supplies power to the control circuit, and power of the control power supply is not contacted outside. A non-contact power supply unit that supplies power.

  The inverter device according to the embodiment includes a main circuit that outputs an AC voltage, a control circuit that controls the main circuit, and a non-contact power receiving unit that receives power from the outside by non-contact power feeding and supplies the power to the control circuit.

  The inverter option device according to the embodiment includes a circuit unit that requires electric power and a non-contact power receiving unit that receives electric power from the outside by non-contact power feeding and supplies the electric power to the circuit unit.

  An external power supply device according to an embodiment is an external power supply device that supplies power to an inverter device or an inverter option device, and includes a power supply unit that is a power supply source, and the power of the power supply unit by contactless power supply. And a non-contact power supply unit that supplies the optional device.

  The inverter device according to the embodiment includes a first main circuit that outputs an AC voltage, a first control circuit that controls the first main circuit, and a control power supply unit that supplies power to the first control circuit. The first inverter device having a non-contact power supply unit that supplies the power of the control power supply unit to the outside by non-contact power supply, the second main circuit that outputs an AC voltage, and the second main circuit are controlled. A second inverter device having a second control circuit and a non-contact power receiving unit that receives power from the non-contact power feeding unit by non-contact power feeding and supplies the power to the second control circuit.

  The inverter device according to the embodiment includes a main circuit that outputs an AC voltage, a control circuit that controls the main circuit, a control power supply that supplies power to the control circuit, and power of the control power supply is not contacted outside. Inverter optional device having an inverter device having a non-contact power supply unit supplied by power supply, a circuit unit that requires power, and a non-contact power receiving unit that receives power from the non-contact power supply unit and supplies the power to the circuit unit by non-contact power supply With.

  An inverter device according to an embodiment includes an external power supply device having a power supply unit that is a power supply source, a non-contact power supply unit that supplies power from the power supply unit to the outside by non-contact power supply, and a main circuit that outputs an AC voltage And an inverter device having a control circuit that controls the main circuit and a non-contact power receiving unit that receives power from the non-contact power feeding unit by non-contact power feeding and supplies the power to the control circuit.

  An inverter device according to an embodiment is an inverter device having a main circuit that outputs an alternating voltage, a control circuit that controls the main circuit, and a control power supply unit that supplies power to the control circuit, and a power supply source. An external power supply device having a power supply unit and a non-contact power supply unit that supplies power from the power supply unit to the outside by non-contact power supply, a circuit unit that requires power, and a circuit that receives power from the non-contact power supply unit by non-contact power supply And an inverter option device having a non-contact power receiving unit to be supplied to the unit.

It is a figure which shows schematic structure of the inverter apparatus which concerns on 1st Embodiment. It is a figure which shows schematic structure of the inverter apparatus which concerns on 2nd Embodiment. It is a figure which shows schematic structure of the modification of the inverter option apparatus with which the inverter apparatus which concerns on 2nd Embodiment is provided. It is a figure which shows schematic structure of the inverter apparatus which concerns on 3rd Embodiment.

(First embodiment)
A first embodiment will be described with reference to FIG.

  As shown in FIG. 1, the inverter device 1 according to the first embodiment includes a first inverter device 1A and a second inverter device 1B. The first inverter device 1A and the second inverter device 1B are provided in an adjacent state (for example, installation called side-by-side).

  The first inverter device 1A includes a first main circuit 11 that converts an AC voltage from a three-phase AC power source (not shown) into an arbitrary frequency and voltage and outputs the converted voltage to a first motor (not shown). The first control circuit 12 that controls the first main circuit 11, the control power supply unit 13 that supplies power to the first control circuit 12, and the power of the control power supply unit 13 is contactlessly fed. The non-contact electric power feeding part 14 which supplies outside is provided.

  The first main circuit 11 includes a rectifier circuit that rectifies an AC voltage supplied from a three-phase AC power supply, a smoothing capacitor, and an inverter circuit that converts the DC voltage into an AC voltage and supplies the AC voltage to the first motor (both are (Not shown). The rectifier circuit is configured, for example, by connecting diodes in a three-phase bridge, and functions as a converter circuit. The inverter circuit is configured by, for example, switching elements such as IGBTs (Insulated Gate Bipolar Transistors) connected in a three-phase bridge and parallelly connecting freewheeling diodes to the switching elements.

  The first control circuit 12 outputs a gate signal for a switching element to the inverter circuit included in the first main circuit 11, and controls the inverter circuit. The inverter circuit is controlled by the first control circuit 12, and motor control represented by V / f (voltage / frequency) constant control is performed.

  The control power supply unit 13 is a control power supply source (power supply circuit) that supplies power (for example, a voltage of 24 V, 15 V, etc.) to the first control circuit 12. For example, the control power supply unit 13 supplies the first control circuit 12 with power for generating and outputting a gate signal for the switching element, that is, control power.

  The non-contact power supply unit 14 includes a drive circuit 14a such as a switching element and a coil 14b for non-contact power supply. The non-contact power supply unit 14 performs switching at an arbitrary frequency by the drive circuit 14a, converts the current into a magnetic flux by electromagnetic induction of the coil 14b for non-contact power supply, and generates a magnetic field outside. That is, the non-contact power supply unit 14 is configured to be able to supply the power of the control power supply unit 13 to the outside of the first inverter device 1A and functions as a circuit unit for non-contact power supply. Note that a switching control signal is input from the control circuit 12 to the drive circuit 14a. Thus, power supply control is performed such that the power of the control power supply unit 13 is supplied to the outside by non-contact power supply at a predetermined timing.

  The second inverter device 1B includes a second main circuit 21 that converts an AC voltage from a three-phase AC power supply (not shown) into an arbitrary frequency and voltage and outputs the converted voltage to a second motor (not shown). A second control circuit 22 that controls the second main circuit 21; a non-contact power receiving unit 23 that receives power from the outside by non-contact power feeding and supplies the power to the second control circuit 22; And a rectifying unit 24 such as a diode for rectifying.

  Similar to the first main circuit 11 described above, the second main circuit 21 converts a DC voltage supplied from a three-phase AC power source to a rectifier circuit, a smoothing capacitor, and a DC voltage into an AC voltage. It is configured by an inverter circuit (none of which is shown) supplied to the second motor. The rectifier circuit is configured, for example, by connecting diodes in a three-phase bridge, and functions as a converter circuit. The inverter circuit is configured by, for example, switching elements such as IGBTs (Insulated Gate Bipolar Transistors) connected in a three-phase bridge and parallelly connecting freewheeling diodes to the switching elements.

  The second control circuit 22 outputs a gate signal for a switching element to the inverter circuit included in the second main circuit 21, and controls the inverter circuit. The inverter circuit is controlled by the second control circuit 22, and motor control represented by V / f (voltage / frequency) constant control is performed.

  The non-contact power receiving unit 23 includes a non-contact power receiving coil, receives power from the non-contact power feeding unit 14 by non-contact power feeding, and supplies the power to the second control circuit 22. In the non-contact power receiving unit 23, a magnetic flux generated by the coil 14b of the non-contact power feeding unit 14 is used as a medium, an electromotive force is generated in the non-contact power receiving coil, and a current flows. AC power due to this current is rectified to DC power by the rectifier 24 and supplied to the second control circuit 22. That is, the non-contact power reception unit 23 is configured to be able to receive the power from the non-contact power supply unit 14 in a non-contact manner and supply the power to the second control circuit 22 and functions as a circuit unit for non-contact power reception. Accordingly, the second control circuit 22 is connected to the control power supply unit 13 in the first inverter device 1A in a non-contact manner.

  In the inverter device 1 having such a configuration, in the first inverter device 1A, power is supplied from the control power supply unit 13 to the control circuit 12, and the control circuit 12 controls the first main circuit 11. The three-phase AC voltage from the three-phase AC power source is converted into a DC voltage by the rectifier circuit of the first main circuit 11 and smoothed by the capacitor of the first main circuit 11. The smoothed DC voltage is converted into an arbitrary three-phase AC voltage by the inverter circuit of the first main circuit 11 and output to the first motor, and the first motor is driven.

  At this time, in accordance with an instruction from the first control circuit 12, switching is performed at an arbitrary frequency by the drive circuit 14 a of the non-contact power feeding unit 14, and current is generated as a magnetic flux by electromagnetic induction of the coil 14 b of the non-contact power feeding unit 14. To generate an external magnetic field. The magnetic flux generated by the coil 14b of the non-contact power supply unit 14 is used as a medium, and in the second inverter device 1B, an electromotive force is generated in the coil of the non-contact power reception unit 23 and a current flows. AC power due to this current is rectified to DC power by the rectifier 24 and supplied to the second control circuit 22. Thus, the control power supply unit 13 of the first inverter device 1A functions as the power supply unit of the second control circuit 22.

  In the second inverter device 1B, the second main circuit 21 is controlled by the second control circuit 22 that receives the power supply described above. Similar to the first main circuit 11 described above, the three-phase AC voltage from the three-phase AC power source is converted into a DC voltage by the rectifier circuit of the second main circuit 21 and smoothed by the capacitor of the second main circuit 21. It becomes. The smoothed DC voltage is converted into an arbitrary three-phase AC voltage by the inverter circuit of the second main circuit 21 and output to the second motor, and the second motor is driven.

  As described above, according to the first embodiment, since it is not necessary to provide the control power supply unit 13 in the second inverter device 1B by using non-contact power feeding, the size of the second inverter device 1B is increased. Can be suppressed. Further, since a user who does not need the built-in control power supply unit 13 (for example, a user who supplies power from an external power supply device) is prevented from incorporating an extra circuit in the second inverter device 1B, the cost can be reduced. Can be suppressed. In addition, since the connection between the first inverter device 1A and the second inverter device 1B can be performed without wiring, the number of wiring steps can be reduced, and further, loosening of screws over time. As a result, it is not necessary to pay attention to damage or deterioration of wires and wires (for example, conductors and bus bars), and maintainability can be improved.

  In addition, as the above-described non-contact power feeding method, there are mainly three methods, that is, any of an electromagnetic induction type, a radio wave reception type, and a resonance (resonance) type. For example, an electromagnetic induction type can be used in the above-described contactless power feeding. As long as this non-contact power feeding is possible, the first inverter device 1A and the second inverter device 1B may be provided at a free position with a distance between them without being adjacent to each other. .

  In the first embodiment, the non-contact power reception unit 23 and the rectification unit 24 are not provided in the first inverter device 1A. However, the present invention is not limited to this. For example, the non-contact power reception unit 23 and A rectifying unit 24 may be provided. In this case, even when the power supply unit 13 for control in the first inverter device 1A fails or can not be supplied by itself during maintenance or the like, it can receive power from the outside.

  Further, in the first embodiment, the control power supply unit 13 and the non-contact power supply unit 14 are not provided in the second inverter device 1B. However, the present invention is not limited to this, and for example, the control power supply unit is provided therein. 13 and the non-contact power feeding unit 14 may be provided. In this case, even when the first inverter device 1A or the non-contact power receiving unit 23 fails or when the external power supply is lost, power can be supplied from its own control power supply unit 13. it can.

(Second Embodiment)
A second embodiment will be described with reference to FIG. In the second embodiment, differences from the first embodiment will be described, the same parts as those described in the first embodiment will be denoted by the same reference numerals, and the description thereof will also be omitted.

  As shown in FIG. 2, the inverter device 1 according to the second embodiment includes a first inverter device 1A according to the first embodiment and an inverter option device 1C for an inverter. The first inverter device 1A and the inverter option device 1C are provided in an adjacent state (for example, installation called side-by-side).

  The inverter option device 1 </ b> C includes a circuit unit 31 that requires power, a non-contact power receiving unit 23 according to the first embodiment, and a rectifying unit 24 according to the first embodiment. As the circuit unit 31, a circuit unit that realizes a predetermined function using power, for example, a communication circuit that performs communication with the outside can be used.

  In the inverter device 1 having such a configuration, in the first inverter device 1A, power is supplied from the control power supply unit 13 to the control circuit 12, and the control circuit 12 controls the first main circuit 11. The three-phase AC voltage from the three-phase AC power source is converted into a DC voltage by the rectifier circuit of the first main circuit 11 and smoothed by the capacitor of the first main circuit 11. The smoothed DC voltage is converted into an arbitrary three-phase AC voltage by the inverter circuit of the first main circuit 11 and output to the first motor, and the first motor is driven.

  At this time, in accordance with an instruction from the first control circuit 12, switching is performed at an arbitrary frequency by the drive circuit 14 a of the non-contact power feeding unit 14, and current is generated as a magnetic flux by electromagnetic induction of the coil 14 b of the non-contact power feeding unit 14. To generate an external magnetic field. The magnetic flux generated by the coil 14b of the non-contact power feeding unit 14 is used as a medium, and in the inverter option device 1C, an electromotive force is generated in the coil of the non-contact power receiving unit 23 and a current flows. The AC power generated by this current is rectified to DC power by the rectifier 24 and supplied to the circuit unit 31. The circuit unit 31 implements a predetermined function (for example, a communication function). As described above, the control power supply unit 13 of the first inverter device 1 </ b> A functions as the power supply unit of the circuit unit 31.

  As described above, according to the second embodiment, the same effects as those of the first embodiment can be obtained. That is, since it is not necessary to provide the control power supply unit 13 in the inverter option device 1C by using the non-contact power feeding, it is possible to suppress an increase in the size of the inverter option device 1C. In addition, for a user who does not need the built-in control power supply unit 13 (for example, a user who supplies power from an external power supply device), an extra circuit is prevented from being incorporated in the inverter option device 1C, thereby reducing costs. Can do. In addition, since it is possible to connect the first inverter device 1A and the inverter option device 1C without wiring, it is possible to reduce the number of wiring steps, and further, loosening screws and wires over time. There is no need to pay attention to damage or deterioration (for example, a lead wire or a bus bar), and maintainability can be improved.

  As in the first embodiment, as the above-described contactless power feeding method, there are mainly three methods, ie, an electromagnetic induction type, a radio wave reception type, and a resonance (resonance) type. For example, an electromagnetic induction type can be used in the above-described contactless power feeding. As long as this non-contact power feeding is possible, the first inverter device 1A and the inverter option device 1C may be provided at a free position apart from each other without being adjacent to each other.

  Here, a modification of the inverter option device 1C according to the second embodiment will be described. As shown in FIG. 3, an inverter option device 1C according to an example of a modification includes an RTC (Real Time Clock) 41 dedicated to timekeeping, a power storage unit 42 for the RTC 41, and the first embodiment. A non-contact power reception unit 23 and a rectification unit 24 according to the first embodiment are provided.

  The RTC 41 and the power storage unit 42 function as the circuit unit 31, and the power storage unit 42 is an electrical component that stores electricity. As the power storage unit 42, for example, a backup capacitor, a battery capable of storing power, or the like can be used. Electric power received from outside by non-contact power feeding is used for charging only the power storage unit 42. Even with the inverter option device 1 </ b> C having such a configuration, the same effect as described above can be obtained. Furthermore, since the power storage unit 42 for the RTC 41 has a low capacity and can be charged with low power, the output is low compared with other methods, but the transmission distance is comparable, as in the radio wave reception type power supply method. A long power supply method can be used, and the range in which non-contact power supply can be performed is wider than other methods, so that the degree of freedom of installation can be improved.

(Third embodiment)
A third embodiment will be described with reference to FIG. In the third embodiment, differences from the first embodiment will be described, and the same parts as those described in the first embodiment will be denoted by the same reference numerals, and the description thereof will also be omitted.

  As shown in FIG. 4, the inverter device 1 according to the third embodiment includes an external power supply device 1D and a second inverter device 1B according to the first embodiment. The external power supply device 1D and the second inverter device 1B are provided in an adjacent state (for example, installation called side-by-side).

  The external power supply 1 </ b> D includes a power supply unit 51 that is a power supply source and the non-contact power supply unit 14 according to the first embodiment. This external power supply device 1 </ b> D is configured to be able to supply the power of the power supply unit 51 to the outside by the non-contact power supply unit 14.

  In the inverter device 1 having such a configuration, in the external power supply device 1D, switching is performed at an arbitrary frequency by the drive circuit 14a of the non-contact power feeding unit 14, and a current is generated by electromagnetic induction of the coil 14b of the non-contact power feeding unit 14. To generate an external magnetic field. The magnetic flux generated by the coil 14b of the non-contact power supply unit 14 is used as a medium, and in the second inverter device 1B, an electromotive force is generated in the coil of the non-contact power reception unit 23 and a current flows. AC power due to this current is rectified to DC power by the rectifier 24 and supplied to the second control circuit 22. In this way, the power supply unit 51 of the external power supply device 1D functions as the power supply unit of the second control circuit 22.

  In the second inverter device 1B, the second main circuit 21 is controlled by the second control circuit 22 that receives the power supply described above. The three-phase AC voltage from the three-phase AC power source is converted into a DC voltage by the rectifier circuit of the second main circuit 21 and smoothed by the capacitor of the second main circuit 21. The smoothed DC voltage is converted into an arbitrary three-phase AC voltage by the inverter circuit of the second main circuit 21 and output to the second motor, and the second motor is driven.

  As described above, according to the third embodiment, the same effects as those of the first embodiment described above can be obtained. That is, since it is not necessary to provide the control power supply unit 13 in the second inverter device 1B by using non-contact power feeding, the second inverter device 1B can be prevented from being enlarged. Further, since a user who does not need the built-in control power supply unit 13 (for example, a user who supplies power from an external power supply device) is prevented from incorporating an extra circuit in the second inverter device 1B, the cost can be reduced. Can be suppressed. In addition, since it is possible to connect the external power supply device 1D and the second inverter device 1B without wiring, it is possible to reduce the number of wiring man-hours, and further, loosening screws and wires over time. There is no need to pay attention to damage or deterioration (for example, a lead wire or a bus bar), and maintainability can be improved.

  As in the first embodiment, as the above-described contactless power feeding method, there are mainly three methods, ie, an electromagnetic induction type, a radio wave reception type, and a resonance (resonance) type. For example, an electromagnetic induction type can be used in the above-described contactless power feeding. As long as this non-contact power feeding is possible, the external power supply device 1D and the second inverter device 1B may be provided at a free position with a distance between them without being adjacent to each other.

  In the third embodiment, power is supplied from the external power supply device 1D to the second inverter device 1B according to the first embodiment by non-contact power feeding. However, the present invention is not limited to this. For example, Electric power may be supplied from the external power supply device 1D to the inverter option device 1C according to the second embodiment by non-contact power supply.

  As mentioned above, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  When there is a margin in the power capacity of the control power supply unit 13 according to the first or second embodiment described above, a plurality of inverter devices 1B may be provided to supply power to them, or A plurality of inverter option devices 1C may be provided to supply power to them, or a plurality of inverter devices 1B and inverter option devices 1C may be provided in combination to supply power to them. . Also, when there is a margin in the power capacity of the external power supply device 1D according to the third embodiment, a plurality of inverter devices 1B or inverter option devices 1C may be provided to supply power to them, or Alternatively, a plurality of inverter devices 1B and inverter option devices 1C may be provided, and power may be supplied to them. In addition, a plurality of inverter devices 1A having the non-contact power receiving unit 23 and the rectifying unit 24 are provided in a state adjacent to each other (for example, installation called side-by-side), and one power source device (the control power source unit 13 or the external power source). The power from the device 1D) may be sequentially supplied to the adjacent inverter device 1A. In this case, the operation when turning on or off only the control power supply can be simplified.

  DESCRIPTION OF SYMBOLS 1 ... Inverter apparatus, 1A ... 1st inverter apparatus, 1B ... 2nd inverter apparatus, 1C ... Inverter option apparatus, 1D ... External power supply apparatus, 11 ... 1st main circuit, 12 ... 1st control circuit, 13 ... Control power supply unit, 14 ... Non-contact power supply unit, 14a ... Drive circuit, 14b ... Coil, 21 ... Second main circuit, 22 ... Second control circuit, 23 ... Non-contact power reception unit, 24 ... Rectification unit, 31 ... Circuit unit, 41 ... RTC (real time clock), 42 ... Power storage unit, 51 ... Power supply unit

Claims (11)

A main circuit that outputs an alternating voltage; and
A control circuit for controlling the main circuit;
A control power supply for supplying power to the control circuit;
A non-contact power feeding unit that supplies power of the control power source unit to the outside by non-contact power feeding;
An inverter device comprising: A main circuit that outputs an alternating voltage; and
A control circuit for controlling the main circuit;
A non-contact power receiving unit that receives power from the outside by non-contact power feeding and supplies the power to the control circuit;
An inverter device comprising: A circuit part that requires power, and
A non-contact power receiving unit that receives power from outside by non-contact power feeding and supplies the power to the circuit unit;
An inverter option device comprising: An external power supply device that supplies power to the inverter device or the inverter option device,
A power supply that is a source of power; and
A non-contact power supply unit that supplies the power of the power supply unit to the inverter device or the inverter option device by non-contact power supply; and
An external power supply device comprising:   The inverter device according to claim 1, further comprising a non-contact power receiving unit that receives electric power from outside by non-contact power feeding and supplies the power to the control circuit.   The inverter device according to claim 2, further comprising a control power supply unit that supplies power to the control circuit. The circuit unit has a real-time clock and a power storage unit for the real-time clock,
4. The inverter option device according to claim 3, wherein the non-contact power receiving unit supplies power only to the power storage unit. A first main circuit that outputs an alternating voltage; a first control circuit that controls the first main circuit; a control power supply that supplies power to the first control circuit; and the control power supply A first inverter device having a non-contact power supply unit for supplying the electric power to the outside by non-contact power supply;
A second main circuit for outputting an AC voltage, a second control circuit for controlling the second main circuit, and receiving power from the non-contact power feeding unit by non-contact power feeding and supplying the power to the second control circuit A second inverter device having a non-contact power receiving unit,
An inverter device comprising: A main circuit that outputs an AC voltage, a control circuit that controls the main circuit, a control power supply that supplies power to the control circuit, and a non-contact power supply that supplies power to the control power supply to the outside An inverter device having a contact power feeding unit;
An inverter option device having a circuit unit that requires electric power, and a non-contact power receiving unit that receives electric power from the non-contact power feeding unit by non-contact power feeding and supplies the power to the circuit unit;
An inverter device comprising: An external power supply device having a power supply unit that is a power supply source, and a non-contact power supply unit that supplies the power of the power supply unit to the outside by non-contact power supply;
An inverter device having a main circuit that outputs an AC voltage, a control circuit that controls the main circuit, and a non-contact power receiving unit that receives power from the non-contact power feeding unit by non-contact power feeding and supplies the power to the control circuit;
An inverter device comprising: An inverter device having a main circuit that outputs an alternating voltage, a control circuit that controls the main circuit, and a control power supply unit that supplies power to the control circuit;
An external power supply device having a power supply unit that is a power supply source, and a non-contact power supply unit that supplies the power of the power supply unit to the outside by non-contact power supply;
An inverter option device having a circuit unit that requires electric power, and a non-contact power receiving unit that receives electric power from the non-contact power feeding unit by non-contact power feeding and supplies the power to the circuit unit;
An inverter device comprising:

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