Air conditioner
A technology for air conditioners and AC power supplies, applied in mechanical equipment, electrical components, climate sustainability, etc., can solve problems such as increasing on-resistance, and achieve the effects of inhibiting large-scale, efficient operation, and inhibiting thermal runaway
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Embodiment approach 1
[0031] figure 1 An example of a configuration example showing the air conditioner 700 of the power conversion device 100 of the first embodiment of the present invention. The air regulator 700 has a power conversion device 100. The power conversion device 100 is a power supply device having an alternating current conversion function that uses the rectifying circuit 3 to convert the AC power supplied from the AC power source 1 to DC power to be applied to the load 50. Such as figure 1 As shown, the power conversion device 100 includes a reactor 2, a rectifier circuit 3, a smoothing capacitor 4, a power supply voltage detecting unit 5, a power supply current detecting unit 6, a bus voltage detecting unit 7, and a control unit 10. The reactor 2 includes the first end and the second end, and the first end is connected to the AC power source 1.
[0032] The rectifier circuit 3 is a circuit that is coupled to two switching elements connected in parallel with a diode and connecting two ...
Embodiment approach 2
[0075] In Embodiment 2, the control unit 10 of the power conversion device 100 will be described using the detection result of the temperature sensor presented in the air conditioner 700.
[0076] In the second embodiment, the structure of the power conversion device 100 and the air conditioner 700 is figure 1 The structure shown in the first embodiment shown is the same. In general, the air regulator 700 is an effective utilization of thermodynamic devices, so in order to achieve air conditioning control, at least one temperature sensor is provided to the outdoor unit 703 and the indoor unit (not shown). For example, in the case where the outdoor unit 703 is provided, the discharge tube for the compressor is provided with a large temperature sensor for detecting the discharge temperature. As described above, the substrate 701 provided in the outdoor unit 703 is high dependent on the ambient temperature, especially in consideration. Figure 10 In the case of the set position shown,...
Embodiment approach 3
[0082] In the third embodiment, a motor drive device having the power conversion device 100 described in Embodiment 1 and the second embodiment will be described.
[0083] Figure 14 It is a diagram showing the configuration example of the motor drive device 101 of the third embodiment. The motor drive 101 drives the motor 42 as a load. The motor drive 101 includes the power conversion device 100, the inverter 41, the motor current detecting unit 44, and the inverter control unit 43 of the first and second embodiments. The inverter 41 converts the DC power supplied from the power conversion device 100 into AC power, outputs to the motor 42, thereby driving the motor 42. Further, the load of the motor driving device 101 is an example in the case where the motor 42 is present, but an example, the device connected to the inverter 41 is an apparatus input to AC power, or an apparatus other than the motor 42.
[0084] The inverter 41 is a circuit that is set to a three-phase bridge str...
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