WO2016132509A1 - インバータ制御装置及び空気調和機 - Google Patents
インバータ制御装置及び空気調和機 Download PDFInfo
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- WO2016132509A1 WO2016132509A1 PCT/JP2015/054618 JP2015054618W WO2016132509A1 WO 2016132509 A1 WO2016132509 A1 WO 2016132509A1 JP 2015054618 W JP2015054618 W JP 2015054618W WO 2016132509 A1 WO2016132509 A1 WO 2016132509A1
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- bus voltage
- out limit
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- limit
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- 238000001514 detection method Methods 0.000 claims description 37
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 description 37
- 230000000694 effects Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000009499 grossing Methods 0.000 description 4
- 230000002265 prevention Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/12—Monitoring commutation; Providing indication of commutation failure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/025—Motor control arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/60—Controlling or determining the temperature of the motor or of the drive
- H02P29/66—Controlling or determining the temperature of the rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/60—Controlling or determining the temperature of the motor or of the drive
- H02P29/66—Controlling or determining the temperature of the rotor
- H02P29/662—Controlling or determining the temperature of the rotor the rotor having permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/08—Arrangements for controlling the speed or torque of a single motor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/021—Inverters therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/15—Power, e.g. by voltage or current
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21156—Temperatures of a compressor or the drive means therefor of the motor
Definitions
- This application relates to an inverter control device for driving a DC motor that drives a DC motor connected to an inverter, and an air conditioner.
- an inverter control device for direct current electric drive of an air conditioner control is performed to prevent the direct current motor from being stopped due to step-out.
- the inverter control device uses the current data in which the primary current input to the converter unit that changes the AC voltage of the commercial AC power supply to a DC voltage is determined as a step-out limit value under a certain arbitrary condition. The operation of the DC motor is controlled so as not to exceed.
- the conventional inverter control device aims at stable operation of the DC motor.
- the current data determined as the step-out limit value is a fixed value that is not changed.
- the value of the primary current at which a step-out can occur varies depending on the operating situation. For this reason, in the conventional control, a step-out may occur due to a change in the operating condition, and the DC motor may stop operating.
- the present invention has been made in view of the above, and provides an inverter control device and an air conditioner capable of realizing control following an operation state in control for preventing operation stop of a DC motor due to step-out. For the purpose.
- inverter control for controlling an inverter unit which converts a DC voltage from a converter unit which converts a voltage of a commercial AC power source into a DC voltage and supplies the DC voltage to an AC motor.
- a magnet temperature detection unit that detects a magnet temperature of the DC motor
- a bus voltage detection unit that detects a DC voltage applied to the inverter unit as a bus voltage
- a primary current input to the converter unit A primary current detection unit for detecting the inverter unit, and a control unit for controlling the inverter unit.
- the control unit stores a storage unit for storing information on the step-out limit, the magnet temperature, the bus voltage, and the decoupling unit.
- a step-out limit current calculation unit for calculating a limit value of the step-out limit current based on the information on the adjustment limit, and the primary current is compared with the limit value;
- a primary current limit control unit that outputs an adjustment command for the operating frequency of the DC motor so that the primary current is equal to or less than the limit value, and the operation frequency is adjusted based on the adjustment command
- an operation frequency control unit that outputs a signal generation instruction corresponding to the operation frequency, and a waveform generation unit that generates a drive signal corresponding to the generation instruction and outputs the drive signal to the inverter unit. It is characterized by.
- FIG. 1 is a schematic diagram showing a configuration of an inverter control device for driving a DC motor in the first embodiment.
- an inverter control device for driving a DC motor includes a converter unit 5 that converts an AC voltage of a commercial AC power source 1 into a DC voltage, and a DC voltage from the converter unit 5 that is converted into an AC voltage.
- the inverter unit 6 supplied to the electric motor 7, the microcomputer 8 that controls the inverter unit 6, the primary current detection unit 9 that detects the primary current input to the converter unit 5, and the bus voltage applied to the inverter unit 6 It comprises a bus voltage detector 15 for detecting and a magnet temperature detector 16 for detecting the magnet temperature of the DC motor 7.
- the converter unit 5 includes a reactor 2, a rectifying diode bridge 3, and a smoothing electrolytic capacitor 4.
- the inverter unit 6 includes a switching element (not shown) that converts the DC voltage generated by the converter unit 5 into three-phase AC by controlling on and off with a drive signal from the microcomputer 8. .
- the DC motor 7 is connected to the inverter unit 6, and can be operated at an arbitrary operation frequency by controlling the voltage supplied from the inverter unit 6.
- the microcomputer 8 stores a step-out limit information storage unit 10 that stores step-out limit information, a magnet temperature detected by the magnet temperature detection unit 16, a bus voltage detected by the bus voltage detection unit 15, and a step-out limit information storage.
- a step-out limit current calculating unit 21 for calculating a limit value of the step-out limit current using the step-out limit information stored in the unit 10; and monitoring so that the primary current does not exceed the limit value of the step-out limit current.
- a primary current limit control unit 12 that issues a command, an operation frequency control unit 13 that controls the operation frequency based on a command from the primary current limit control unit, and a waveform generation unit that outputs a drive signal according to the output of the operation frequency control unit 14 is provided.
- the microcomputer 8 is an example of a control unit.
- the primary current limit control unit 12 compares the primary current detected by the primary current detection unit 9 with the limit value of the step-out limit current, and if the primary current exceeds the limit value, the primary current is A command for adjusting the operating frequency of the DC motor 7 is output to the operating frequency control unit 13 so as to be equal to or less than the limit value.
- the operation frequency control unit 13 adjusts the operation frequency of the DC motor 7 based on the adjustment instruction output from the primary current limit control unit 12, and outputs a signal generation instruction corresponding to the operation frequency to the waveform generation unit 14. .
- the waveform generation unit 14 generates a drive signal corresponding to the generation instruction output from the operation frequency control unit 13 and outputs the drive signal to the inverter unit 6.
- the step-out limit information storage unit 10 includes step-out limit current data 17 that is a primary current when a DC motor measured under a certain arbitrary condition is stepped out as step-out limit information, and a step-out limit when the step-out limit is measured.
- Step-out limit bus voltage data 18 which is a bus voltage
- step-out limit magnet temperature data 19 which is a magnet temperature when the step-out limit is measured
- magnetic force temperature characteristic data 20 which is a magnetic characteristic due to the magnet temperature of the DC motor,
- the step-out limit information is used for calculation processing of the limit value of the step-out limit current by the microcomputer 8.
- the step-out limit information storage unit 10 is an example of a storage unit.
- the step-out limit information is an example of information related to the step-out limit.
- the inverter control device includes a bus voltage detection unit 15 that detects a bus voltage applied to the inverter unit 6 and a magnet of the DC motor 7 in the control for preventing the operation stop of the DC motor 7 due to step-out.
- a magnet temperature detector 16 for detecting the temperature is newly provided.
- the inverter control device is based on the magnet temperature of the DC motor 7, the bus voltage applied to the inverter unit 6, and the step-out limit information stored in the step-out limit information storage unit 10.
- a step-out limit current calculating unit 21 for calculating a limit value of the step-out limit current.
- the inverter control device compares the limit value of the step-out limit current with the primary current detected by the primary current detector 9, and as a result of comparison, the primary current exceeds the limit value Includes a primary current limit control unit 12, an operation frequency control unit 13, and a waveform generation unit 14 that adjust the operation frequency of the DC motor so that the primary current is equal to or less than the limit value.
- the inverter control device realizes control that follows the operation load in the control that prevents the DC motor from being stopped due to step-out.
- FIGS. 2 and 3 are flowcharts showing the flow of processing according to the first embodiment.
- the inverter control device executes a limit value calculation process for the step-out limit current (step S101).
- the limit value calculation process for the step-out limit current will be described later with reference to FIG.
- the inverter control device acquires a primary current (step S102).
- the inverter control device compares the primary current acquired in step S102 with the limit value calculated by the limit value calculation process of the step-out limit current in step S101, and whether the primary current exceeds the limit value. Is determined (step S103).
- step S103 When the primary current exceeds the limit value as a result of the determination in step S103 (step S103, Yes), the inverter control device executes control to reduce the operating frequency of the DC motor 7 (step S204). The process returns to S101. On the other hand, if the primary current does not exceed the limit value as a result of the determination in step S103 (No in step S103), the inverter control device directly returns to the process in step S101.
- the inverter control apparatus acquires the magnet temperature of the DC motor 7 (step S201). Subsequently, the inverter control device reads out-of-step limit magnet temperature data 19 from the out-of-step limit information storage unit 10 (step S202). Subsequently, the inverter control device calculates a magnet temperature difference using the magnet temperature acquired in step S201 and the step-out limit magnet temperature data 19 read in step S202 (step S203).
- the inverter control device reads the magnetic temperature characteristic data 20 from the step-out limit information storage unit 10 (step S204). Subsequently, the inverter control device calculates a magnetic force change rate using the magnet temperature difference calculated in step S203 and the magnetic temperature characteristic data 20 read in step S204 (step S205).
- the inverter control device acquires the bus voltage applied to the inverter unit 6 (step S206). Subsequently, the inverter control device reads out-of-step limit bus voltage data 18 from the out-of-step limit information storage unit 10 (step S207). Subsequently, the inverter control device calculates the bus voltage ratio using the bus voltage acquired in step S206 and the step-out limit bus voltage data 18 read in step S207 (step S208).
- the inverter control device reads out-of-step limit current data 17 from the out-of-step limit information storage unit 10 (step S209). Subsequently, the inverter control device calculates a limit value of the step-out limit current using the bus voltage ratio calculated in step S208 and the step-out limit current data 17 read in step S209 (step S210). The limit value calculation process for the step-out limit current shown in FIG.
- the magnetic force change rate calculated in step S205 is calculated by the following equation (2).
- Magnetic force change ratio 1 ⁇ ((Td1 ⁇ Tdx) ⁇ A) (2)
- the magnet change rate is 0.9, which is the step-out limit. Used to calculate the current limit value.
- step S206 shown in FIG. 3 The processing procedure from step S206 shown in FIG. 3 to calculation of the bus voltage ratio in step S208 will be specifically described using numerical examples.
- step S208 the bus voltage ratio calculated in step S208 is calculated by the following equation (3).
- Bus voltage ratio Vdc1 ⁇ Vdcx (3)
- Vdc1 is 90 (V) and Vdcx is 100 (V)
- the bus voltage ratio is 0.9, and this value is used to calculate the limit value of the step-out limit current.
- step-out limit current Ix ⁇ magnetic force change ratio ⁇ bus voltage ratio (4)
- the inverter control device controls the operating frequency of the DC motor 7 so that the primary current is 8.1 (A) or less.
- the inverter control device enables the operation of the DC motor 7 adapted to the detected values of the magnet temperature and the bus voltage by using the limit value of the step-out limit current calculated by the above formula (4).
- the influence on the operating state of the DC motor 7 when the detected values of the magnet temperature and the bus voltage change will be described using numerical examples.
- the limit value of the step-out limit current is 11 (A).
- the limit value of the step-out limit current is kept at, for example, 10 (A)
- the DC motor 7 is operated in a state lower than the primary current that can be actually operated, and the operation range is excessively increased. Limit it.
- the inverter control device calculates the limit value of the step-out limit current based on the magnet temperature and the bus voltage, and controls the operation of the DC motor 7 based on the limit value. .
- the magnet temperature and the bus voltage are employed as indices for specifying the operation status of the DC motor 7, thereby Can be achieved.
- FIG. FIG. 4 is a schematic diagram showing a configuration of an inverter control device for driving a DC motor in the second embodiment.
- the inverter control device converts the AC voltage of the commercial AC power source 1 into a DC voltage, and converts the DC voltage from the converter unit 5 into an AC voltage.
- An inverter unit 6 to be supplied to the DC motor 7, a microcomputer 8 for controlling the inverter unit 6, a primary current detection unit 9 for detecting a primary current input to the converter unit 5, and a primary voltage applied to the converter unit 5 Is constituted by a primary voltage detection unit 22 for detecting the bus voltage, a bus voltage detection unit 15 for detecting a bus voltage applied to the inverter unit 6, and a magnet temperature detection unit 16 for detecting the magnet temperature of the DC motor 7.
- the converter unit 5 includes a reactor 2, a rectifying diode bridge 3, and a smoothing electrolytic capacitor 4.
- the inverter unit 6 includes a switching element (not shown) that converts the DC voltage generated by the converter unit 5 into three-phase AC by controlling on and off with a drive signal from the microcomputer 8. .
- the DC motor 7 is connected to the inverter unit 6, and can be operated at an arbitrary operation frequency by controlling the voltage supplied from the inverter unit 6.
- the microcomputer 8 includes a primary power calculation unit 25 that calculates primary power using the primary current detected by the primary current detection unit 9 and the primary voltage detected by the primary voltage detection unit 22, and a step-out limit information that stores step-out limit information. Step-out limit using the tuning limit information storage unit 10, the magnet temperature detected by the magnet temperature detection unit 16, the bus voltage detected by the bus voltage detection unit 15, and the step-out limit information in the step-out limit information storage unit 10.
- a step-out limit power calculation unit 24 that calculates a power limit value, a primary power limit control unit 26 that monitors and issues a command so that the primary power does not exceed the step-out limit power limit value, and a primary power limit control unit 26.
- an operation frequency control unit 13 that controls the operation frequency based on the command
- a waveform generation unit 14 that outputs a drive signal corresponding to the output of the operation frequency control unit 13.
- the microcomputer 8 is an example of a control unit.
- the primary power limit control unit 26 compares the primary power calculated by the primary power calculation unit 25 with the limit value of the step-out limit power, and when the primary power exceeds the limit value, the primary power is A command for adjusting the operating frequency of the DC motor 7 is output to the operating frequency control unit 13 so as to be equal to or less than the limit value.
- the operating frequency control unit 13 adjusts the operating frequency of the DC motor 7 based on the adjustment command output from the primary power limit control unit 26, and outputs a signal generation instruction corresponding to the operating frequency to the waveform generating unit 14. To do.
- the waveform generation unit 14 generates a drive signal corresponding to the generation instruction output from the operation frequency control unit 13 and outputs the drive signal to the inverter unit 6.
- the step-out limit information storage unit 10 includes step-out limit power data 23, which is primary power when a DC motor measured under certain arbitrary conditions is stepped out as step-out limit information, and a step-out limit when the step-out limit is measured.
- Step-out limit bus voltage data 18 which is a bus voltage
- step-out limit magnet temperature data 19 which is a magnet temperature when the step-out limit is measured
- magnetic force temperature characteristic data 20 which is a magnetic characteristic according to the magnet temperature of the DC motor 7.
- the step-out limit information is used for the calculation process of the limit value of the step-out limit power by the microcomputer 8.
- the step-out limit information storage unit 10 is an example of a storage unit.
- the step-out limit information is an example of information related to the step-out limit.
- the inverter control device includes a bus voltage detection unit 15 that detects a bus voltage applied to the inverter unit 6 and a magnet of the DC motor 7 in the control for preventing the operation stop of the DC motor 7 due to step-out.
- a magnet temperature detector 16 for detecting the temperature is newly provided.
- the inverter control device is based on the magnet temperature of the DC motor 7, the bus voltage applied to the inverter unit 6, and the step-out limit information stored in the step-out limit information storage unit 10.
- a step-out limit current calculation unit 24 for calculating a limit value of the step-out limit power.
- the inverter control device includes a primary power calculation unit 25 that calculates primary power based on the primary current and the primary voltage.
- the inverter control device compares the limit value of the step-out limit power with the primary power, and when the primary power exceeds the limit value as a result of the comparison, the primary power is less than the limit value.
- a primary power limit control unit 26 that adjusts the operation frequency of the DC motor 7, an operation frequency control unit 13, and a waveform generation unit 14 are provided.
- the inverter control apparatus realizes control that follows the operation load in the control that prevents the DC motor from being stopped due to step-out.
- FIGS. 5 and 6 are flowcharts showing the flow of processing according to the second embodiment.
- the inverter control device executes a limit value calculation process for the step-out limit power (step S301).
- the limit value calculation process for the step-out limit power will be described later with reference to FIG.
- the inverter control device acquires a primary current (step S302).
- the inverter control device acquires a primary voltage (step S303).
- the inverter control device calculates primary power based on the primary current acquired in step S302 and the primary voltage acquired in step S303 (step S304).
- the inverter control device compares the primary power calculated in step S304 with the limit value calculated by the step-out limit power limit value calculation process in step S301, and whether the primary power exceeds the limit value. Is determined (step S305).
- step S305 When the primary power exceeds the limit value as a result of the determination in step S305 (step S305, Yes), the inverter control device executes control to reduce the operating frequency of the DC motor 7 (step S306), and step The process returns to S301. On the other hand, when the primary power does not exceed the limit value as a result of the determination in step S305 (No in step S305), the inverter control device returns to the process in step S301 as it is.
- the inverter control apparatus acquires the magnet temperature of the DC motor 7 (step S401). Subsequently, the inverter control device reads out-of-step limit magnet temperature data 19 from the out-of-step limit information storage unit 10 (step S402). Subsequently, the inverter control device calculates a magnet temperature difference using the magnet temperature acquired in step S401 and the step-out limit magnet temperature data 19 read in step S402 (step S403).
- the inverter control device reads the magnetic temperature characteristic data 20 from the step-out limit information storage unit 10 (step S404). Subsequently, the inverter control device calculates a magnetic force change rate using the magnet temperature difference calculated in step S403 and the magnetic temperature characteristic data 20 read in step S404 (step S405).
- the inverter control device acquires a bus voltage applied to the inverter unit 6 (step S406). Subsequently, the inverter control device reads out-of-step limit bus voltage data 18 from the out-of-step limit information storage unit 10 (step S407). Subsequently, the inverter control device calculates the bus voltage ratio using the bus voltage acquired in step S406 and the step-out limit bus voltage data 18 read in step S407 (step S408).
- the inverter control device reads out-of-step limit power data 23 from the out-of-step limit information storage unit 10 (step S409). Subsequently, the inverter control device calculates a limit value of the step-out limit power using the bus voltage ratio calculated in step S408 and the step-out limit power data 23 read in step S409 (step S410), and FIG. The step-out limit power limit value calculation process shown in FIG.
- step S409 When the step-out limit power data acquired in step S409 is represented by Px, the limit value of the step-out limit power is calculated by the following equation (5).
- Limit value of step-out limit power Px ⁇ magnetic force change ratio ⁇ bus voltage ratio (5)
- the inverter control device controls the operating frequency of the DC motor 7 so that the primary power is 810 (W) or less.
- the inverter control device enables the operation of the DC motor 7 adapted to the detected values of the magnet temperature and the bus voltage by using the limit value of the step-out limit power calculated by the above equation (5).
- the influence on the operating state of the DC motor 7 when the detected values of the magnet temperature and the bus voltage change will be described using numerical examples.
- the limit value of the step-out limit power is operated as a fixed value as in the past, even if the magnet temperature rises from 100 (° C.) to 110 (° C.), for example, a fixed limit value of 1000 ( The control of the DC motor 7 is executed with the state W).
- the limit value of the step-out limit current is calculated as 900 (W).
- the limit value of the step-out limit current is kept at, for example, 1000 (W)
- the DC motor 7 is operated in a state higher than the primary power that can actually be operated, and the possibility of step-out may occur.
- the limit value of the step-out limit power is 1100 (W).
- the limit value of the step-out limit power is operated with, for example, 1000 (W)
- the DC motor 7 is operated in a state lower than the primary power that can actually be operated, and the operation range is excessively increased. Limit it.
- the limit value of the step-out limit power is 1100 (W).
- the inverter control device calculates the limit value of the step-out limit power based on the magnet temperature and the bus voltage, and controls the operation of the DC motor 7 based on the limit value. .
- the magnet temperature and the bus voltage are employed as indices for specifying the operation status of the DC motor 7, thereby Can be achieved.
- the first embodiment it is possible not only to prevent the operation of the DC motor from being stopped due to the step-out, but also to avoid an excessively limited operation that does not conform to the operation status.
- the service life of the DC motor 7 can be extended.
- FIG. 7 is a schematic diagram showing a configuration of an inverter control device for driving a DC motor in the third embodiment.
- the inverter control device converts the AC voltage of the commercial AC power source 1 into a DC voltage, and converts the DC voltage from the converter unit 5 into an AC voltage.
- a microcomputer 8 that controls the inverter unit 6, a primary current detection unit 9 that detects a primary current input to the converter unit 5, and a primary voltage detection unit 22 that detects a primary voltage applied to the converter unit 5.
- a bus voltage detector 15 that detects a DC voltage applied to the inverter 6 as a bus voltage, and a magnet of the DC motor 7 Composed from the magnet temperature detection section 16 for detecting a degree.
- the converter unit 5 includes a reactor 2, a rectifying diode bridge 3, and a smoothing electrolytic capacitor 4.
- the inverter unit 6 includes a switching element (not shown) that converts the DC voltage generated by the converter unit 5 into three-phase AC by controlling on and off with a drive signal from the microcomputer 8. .
- the DC motor 7 is connected to the inverter unit 6, and can be operated at an arbitrary operation frequency by controlling the voltage supplied from the inverter unit 6.
- the microcomputer 8 includes a primary power calculation unit 25 that calculates primary power using the primary current detected by the primary current detection unit 9 and the primary voltage detected by the primary voltage detection unit 22, and a step-out limit information that stores step-out limit information.
- DC motor using the adjustment limit information storage unit 10 the magnet temperature detected by the magnet temperature detection unit 16, the primary power calculated by the primary power calculation unit 25, and the step-out limit information of the step-out limit information storage unit 10.
- the required bus voltage calculation unit 27 that calculates the necessary bus voltage required for stable driving of the bus 7 and the bus that issues a command so that the bus voltage detected by the bus voltage detection unit 15 is always equal to or greater than the required bus voltage
- a voltage control unit 28 and a drive signal generation unit 29 that outputs a drive signal of the short-circuit control unit 32 based on a command from the bus voltage control unit 28 are provided.
- the microcomputer 8 is an example of a control unit.
- the necessary bus voltage calculation unit 27 is an example of a bus voltage calculation unit.
- the necessary bus voltage calculation unit 27 generates a necessary bus voltage required for driving the DC motor 7 based on the primary power calculated by the primary power calculation unit 25 and the step-out limit information.
- the bus voltage controller 28 compares the bus voltage detected by the bus voltage detector 15 with the required bus voltage, and when the bus voltage is equal to or lower than the required bus voltage, the bus voltage exceeds the required bus voltage. A signal generation instruction is output to the drive signal generation unit 29. On the other hand, when the bus voltage exceeds the required bus voltage, the bus voltage control unit 28 outputs to the drive signal generation unit 29 a drive signal generation instruction that causes the bus voltage to be equal to or lower than the required bus voltage.
- the drive signal generator 29 generates a drive signal corresponding to the generation instruction output from the bus voltage controller 28 and outputs the drive signal to the short-circuit controller 32.
- the bus voltage detected by the bus voltage detector 15 is an example of a first bus voltage.
- the required bus voltage calculated by the required bus voltage calculator 27 is an example of a second bus voltage.
- the step-out limit information storage unit 10 has, as step-out limit information, step-out limit power data 23, which is primary power when the DC motor 7 measured under a certain arbitrary condition has stepped out, and when the step-out limit is measured.
- Step-out limit bus voltage data 18 that is the bus voltage of the motor
- step-out limit magnet temperature data 19 that is the magnet temperature when the step-out limit is measured
- magnetic force temperature characteristic data 20 that is the magnetic force characteristic according to the magnet temperature of the DC motor.
- the step-out limit information is used for calculating the necessary bus voltage by the microcomputer 8.
- the step-out limit information storage unit 10 is an example of a storage unit.
- the step-out limit information is an example of information related to the step-out limit.
- the inverter control device includes a bus voltage detection unit 15 that detects a bus voltage applied to the inverter unit 6 and a magnet of the DC motor 7 in the control for preventing operation stop of the DC motor 7 due to step-out.
- a magnet temperature detector 16 for detecting the temperature is newly provided.
- the inverter control device is based on the magnet temperature of the DC motor 7, the bus voltage applied to the inverter unit 6, and the step-out limit information stored in the step-out limit information storage unit 10. And a necessary bus voltage calculation unit 27 for calculating the necessary bus voltage.
- the inverter control device includes a bus voltage control unit 28 that controls the bus voltage by comparing the bus voltage applied to the inverter unit 6 with the necessary bus voltage, and a drive signal generation unit 29.
- the inverter control device realizes the control that follows the driving situation in the control for preventing the DC motor from being stopped due to the step-out.
- FIGS. 8 and 9 are flowcharts showing the flow of processing according to the third embodiment.
- the inverter control device executes a necessary bus voltage calculation process (step S501).
- the limit value calculation process for the step-out limit power will be described later with reference to FIG.
- the inverter control device acquires a bus voltage (step S502).
- the inverter control device compares the bus voltage acquired in step S502 with the required bus voltage calculated by the required bus voltage calculation process in step S501, and determines whether the bus voltage is equal to or lower than the required bus voltage. (Step S503).
- step S503 If the result of determination in step S503 is that the bus voltage is less than or equal to the required bus voltage (step S503, Yes), the inverter control device performs bus voltage boost control (step S504) and returns to the processing procedure of step S501. . On the contrary, if the result of determination in step S503 is that the bus voltage is greater than the required bus voltage (No in step S503), the inverter control device executes bus voltage step-down control (step S505), and step The process returns to S501.
- the inverter control device acquires the magnet temperature of the DC motor 7 (step S601). Subsequently, the inverter control device reads out-of-step limit magnet temperature data 19 from the out-of-step limit information storage unit 10 (step S602). Subsequently, the inverter control device calculates a magnet temperature difference using the magnet temperature acquired in step S601 and the step-out limit magnet temperature data 19 read in step S602 (step S603).
- the inverter control device reads the magnetic temperature characteristic data 20 from the step-out limit information storage unit 10 (step S604). Subsequently, the inverter control device calculates the reciprocal of the magnetic force change rate using the magnet temperature difference calculated in step S603 and the magnetic temperature characteristic data 20 read in step S604 (step S605).
- the inverter control device acquires the primary current detected by the primary current detection unit 9 (step S606). Subsequently, the inverter control device acquires the primary voltage detected by the primary voltage detection unit 22 (step S607). Subsequently, the inverter control device calculates primary power using the primary current acquired in step S606 and the primary voltage acquired in step S607 (step S608).
- the inverter control device reads out-of-step limit power data 23 from the out-of-step limit information storage unit 10 (step S609). Subsequently, the inverter control device calculates a power ratio using the primary power acquired in step S608 and the step-out limit power data 23 read in step S609 (step S610).
- the inverter control device reads out-of-step limit bus voltage data 18 from the out-of-step limit information storage unit 10 (step S611). Subsequently, the inverter control device calculates a necessary bus voltage using the power ratio calculated in step S610 and the step-out limit bus voltage data 18 read in step S611 (step S612).
- step S601 shown in FIG. 9 The processing procedure from the step S601 shown in FIG. 9 to the calculation of the reciprocal of the magnetic force change ratio in step S605 will be specifically described using numerical examples.
- the processing procedure up to step S604 shown in FIG. 9 is the same as that in the above embodiment. Note that each variable included in the mathematical expression described below has the same meaning as in the above embodiment.
- the inverter control device controls the operation of the DC motor 7 based on 112.5 (V) which is a necessary bus voltage.
- the inverter control device enables operation of the DC motor 7 adapted to the magnet temperature and the detected value of the primary power by using the necessary bus voltage calculated by the above equation (8).
- the influence on the operating state of the DC motor 7 when the detected values of the magnet temperature and the primary power change will be described using numerical examples.
- the necessary bus voltage is calculated as 90 (V). For this reason, if the bus voltage is operated at 100 (V), the DC motor 7 is operated at a voltage higher than the bus voltage actually required for operation, so there is no possibility of step-out. However, since the bus voltage is boosted more than necessary, there arises a problem that switching loss increases.
- the inverter control device calculates the necessary bus voltage based on the magnet temperature and the primary power. And the inverter control apparatus which concerns on Embodiment 3 controls the bus-line voltage applied to the inverter part 6 based on a required bus-line voltage. For this reason, according to the third embodiment, in the control for preventing the operation stop of the DC motor due to the step-out, the magnet temperature and the primary power are employed as indices for specifying the operation status of the DC motor 7, thereby making the operation status.
- the operation of the DC motor is controlled in a range in which the bus voltage applied to the inverter unit 6 does not exceed the required bus voltage, switching loss can be reduced. Moreover, according to Embodiment 3, as a result of being able to reduce switching loss, energy consumption can be reduced. Further, according to the third embodiment, the energy consumption can be reduced, so that the environmental load can be reduced.
- the magnet temperature detection unit 16 in the above embodiment uses the temperature of the discharge pipe portion of the compressor or the temperature of the shell portion of the compressor using the inverter control device for the DC motor, or the temperature of the side surface of the shell of the compressor. Alternatively, the same effect can be obtained when the temperature of the lower surface of the shell is used.
- the magnet temperature detector 16 is not limited to the case where the temperature is directly detected from the magnet part of the DC motor 7.
- the magnet temperature detection unit 16 may include means for detecting the ambient temperature of the magnet portion of the DC motor 7 and converting the detected ambient temperature into a magnet temperature.
- the inverter control device in the above embodiment for an air conditioner.
- the air conditioner can be stably operated with high capacity.
- the functions realized by the primary power limit control unit 26, the necessary bus voltage calculation unit 27, the bus voltage control unit 28, and the drive signal generation unit 29 are a CPU (Central Processing Unit) or a system that executes a program stored in the memory. This is realized by a processing circuit such as LSI (Large Scale Integration). Further, a plurality of processing circuits may cooperate to execute each function described above.
- the configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.
- 1 commercial AC power supply 2 reactor, 3 diode bridge, 4 electrolytic capacitor for smoothing, 5 converter unit, 6 inverter unit, 7 DC motor, 8 microcomputer, 9 primary current detection unit, 10 step-out limit information storage unit, 13 Operating frequency controller, 14 waveform generator, 15 bus voltage detector, 16 magnet temperature detector, 17 step out limit current data, 18 step out limit bus voltage data, 19 step out limit magnet temperature data, 20 magnetic temperature characteristic data 21 step-out limit current calculation unit, 22 primary voltage detection unit, 23 step-out limit power data, 24 step-out limit power calculation unit, 25 primary power calculation unit, 26 primary power limit control unit, 27 required bus voltage calculation unit, 28 bus voltage controller, 29 drive signal generator, 30 short-circuit element, 31 diode bridge 32 short-circuit control unit.
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Abstract
Description
図1は、実施の形態1における直流電動機駆動用のインバータ制御装置の構成を示す模式図である。図1に示すように、直流電動機駆動用のインバータ制御装置は、商用交流電源1の交流電圧を直流電圧に変換するコンバータ部5と、コンバータ部5からの直流電圧を交流電圧に変換して直流電動機7に供給するインバータ部6と、インバータ部6を制御するマイクロコンピュータ8と、コンバータ部5に入力される一次電流を検出する一次電流検出部9と、インバータ部6に印加される母線電圧を検出する母線電圧検出部15と、直流電動機7の磁石温度を検出する磁石温度検出部16とから構成される。コンバータ部5は、リアクタ2、整流用のダイオードブリッジ3、平滑用の電解コンデンサ4から構成される。また、インバータ部6は、コンバータ部5で作られた直流電圧をマイクロコンピュータ8からの駆動信号によってオンとオフ制御することにより3相交流に変換するスイッチング素子(図示せず)で構成されている。直流電動機7は、インバータ部6に接続されており、インバータ部6から供給される電圧を制御することにより任意の運転周波数で運転することができる。
磁石温度差=Td1-Tdx・・・(1)
磁力変化割合=1-((Td1-Tdx)×A)・・・(2)
磁石温度差=110-100=10(℃)
磁力変化割合=1-(10×0.1)=0.9
母線電圧比=Vdc1÷Vdcx・・・(3)
母線電圧比=90÷100=0.9
脱調限界電流の制限値=Ix×磁力変化割合×母線電圧比・・・(4)
脱調限界電流の制限値=10×0.9×0.9=8.1(A)
脱調限界電流の制限値=10×(1-((110-100)×0.01)×1=9(A)
脱調限界電流の制限値=10×(1-((90-100)×0.01)×1=11(A)
脱調限界電流の制限値=10×1×(110÷100)=11(A)
脱調限界電流の制限値=10×1×(90÷100)=9(A)
図4は、実施の形態2における直流電動機駆動用のインバータ制御装置の構成を示す模式図である。
脱調限界電力の制限値=Px×磁力変化割合×母線電圧比・・・(5)
脱調限界電流の制限値=1000(W)×0.9×0.9=810(W)
脱調限界電流の制限値=1000×(1-((110-100)×0.01)×1=900(A)
脱調限界電流の制限値=1000×(1-((90-100)×0.01)×1=1100(W)
脱調限界電力の制限値=1000×1×(110÷100)=1100(W)
脱調限界電力の制限値=1000×1×(90÷100)=900(W)
図7は、実施の形態3における直流電動機駆動用のインバータ制御装置の構成を示す模式図である。
磁力変化割合の逆数=1÷(1-((Td1-Tdx)×A))・・・(6)
磁力変化割合の逆数=1÷(1-((120-100)×0.01))
=1÷(1-(20×0.01))
=1÷(1-0.2)
=1.25
電力比=P1÷Px・・・(7)
電力比=900÷1000=0.9
必要母線電圧=Vdcx×磁力変化割合の逆数×電力比・・・(8)
必要母線電圧=100×1.25×0.9=112.5(V)
必要母線電圧=100×1÷(1-((120-100)×0.01))×1=125(V)
必要母線電圧=100×1÷(1-((75-100)×0.01))×1=80(V)
必要母線電圧=100×1×(1100÷1000)
=110(V)
必要母線電圧=100×1×(900÷1000)
=90(V)
Claims (11)
- 商用交流電源の電圧を直流電圧に変換するコンバータ部からの直流電圧を交流電圧に変換して直流電動機に供給するインバータ部を制御するインバータ制御装置であって、
前記直流電動機の磁石温度を検出する磁石温度検出部と、
前記インバータ部に印加される直流電圧を母線電圧として検出する母線電圧検出部と、
前記コンバータ部に入力される一次電流を検出する一次電流検出部と、
前記インバータ部を制御する制御部と
を備え、
前記制御部は、
脱調限界に関する情報を記憶する記憶部と、
前記磁石温度と、前記母線電圧と、前記脱調限界に関する情報とに基づいて、脱調限界電流の制限値を算出する脱調限界電流算出部と、
前記一次電流と前記制限値とを比較し、前記一次電流が前記制限値を超える場合には、当該一次電流が当該制限値以下となるように前記直流電動機の運転周波数の調整指令を出力する一次電流制限制御部と、
前記調整指令に基づいて前記運転周波数を調整し、当該運転周波数に対応する信号の生成指示を出力する運転周波数制御部と、
前記生成指示に対応する駆動信号を生成し、当該駆動信号を前記インバータ部に出力する波形生成部と
を備えることを特徴とするインバータ制御装置。 - 前記記憶部は、前記脱調限界に関する情報として、脱調限界磁石温度データ、磁力温度特性データ、及び脱調限界電流データを記憶し、
前記脱調限界電流算出部は、
前記磁石温度と、前記脱調限界磁石温度データとに基づいて磁石温度差を算出し、
当該磁石温度差と、前記磁力温度特性データとに基づいて磁力変化割合を算出し、
当該磁力変化割合と、前記脱調限界電流データとに基づいて前記制限値を算出する、
ことを特徴とする請求項1に記載のインバータ制御装置。 - 前記記憶部は、前記脱調限界に関する情報として、脱調限界電流データ及び脱調限界母線電圧データを記憶し、
前記脱調限界電流算出部は、
前記母線電圧と、前記脱調限界母線電圧データとに基づいて母線電圧比を算出し、
当該母線電圧比と、前記脱調限界電流データとに基づいて前記制限値を算出する、
ことを特徴とする請求項1に記載のインバータ制御装置。 - 商用交流電源の電圧を直流電圧に変換するコンバータ部からの直流電圧を交流電圧に変換して直流電動機に供給するインバータ部を制御するインバータ制御装置であって、
前記直流電動機の磁石温度を検出する磁石温度検出部と、
前記インバータ部に印加される直流電圧を母線電圧として検出する母線電圧検出部と、
前記コンバータ部に入力される一次電流を検出する一次電流検出部と、
前記コンバータ部に印加される一次電圧を検出する一次電圧検出部と、
前記インバータ部を制御する制御部と
を備え、
前記制御部は、
脱調限界に関する情報を記憶する記憶部と、
前記磁石温度と、前記母線電圧と、前記脱調限界に関する情報とに基づいて、脱調限界電力の制限値を算出する脱調限界電力算出部と、
前記一次電流と前記一次電圧とに基づいて一次電力を算出する一次電力算出部と、
前記一次電力と前記制限値とを比較し、当該一次電力が当該制限値を超える場合には、当該一次電力が当該制限値以下となるように前記直流電動機の運転周波数の調整指令を出力する一次電力制限制御部と、
前記調整指令に基づいて前記運転周波数を調整し、当該運転周波数に対応する信号の生成指示を出力する運転周波数制御部と、
前記生成指示に対応する駆動信号を生成し、当該駆動信号を前記インバータ部に出力する波形生成部と
を備えることを特徴とするインバータ制御装置。 - 前記記憶部は、前記脱調限界に関する情報として、脱調限界磁石温度データ、磁力温度特性データ、及び脱調限界電力データを記憶し、
前記脱調限界電力算出部は、
前記磁石温度と、前記脱調限界磁石温度データとに基づいて磁石温度差を算出し、
当該磁石温度差と、前記磁力温度特性データとに基づいて磁力変化割合を算出し、
当該磁力変化割合と、前記脱調限界電流データとに基づいて前記制限値を算出する、
ことを特徴とする請求項4に記載のインバータ制御装置。 - 前記記憶部は、前記脱調限界に関する情報として、脱調限界母線電圧データ及び脱調限界電力データを記憶し、
前記脱調限界電力算出部は、
前記母線電圧と、前記脱調限界母線電圧データとに基づいて母線電圧比を算出し、
当該母線電圧比と、前記脱調限界電力データとに基づいて前記制限値を算出する、
ことを特徴とする請求項4に記載のインバータ制御装置。 - 商用交流電源の電圧を直流電圧に変換するコンバータ部からの直流電圧を交流電圧に変換して直流電動機に供給するインバータ部を制御するインバータ制御装置であって、
前記コンバータ部に搭載され、短絡素子のスイッチングにより駆動されるダイオードブリッジによって前記コンバータ部から前記インバータ部に印加される直流電圧を制御する短絡制御部と、
前記直流電動機の磁石温度を検出する磁石温度検出部と、
前記インバータ部に印加される直流電圧を第1母線電圧として検出する母線電圧検出部と、
前記コンバータ部に入力される一次電流を検出する一次電流検出部と、
前記コンバータ部に印加される一次電圧を検出する一次電圧検出部と、
前記インバータ部を制御する制御部と
を備え、
前記制御部は、
脱調限界に関する情報を記憶する記憶部と、
前記一次電流と前記一次電圧とに基づいて一次電力を算出する一次電力算出部と、
前記一次電力と、前記脱調限界に関する情報とに基づいて、前記直流電動機の駆動に要する第2母線電圧を算出する母線電圧算出部と、
前記第1母線電圧と前記第2母線電圧とを比較し、当該第1母線電圧が当該第2母線電圧以下となる場合には、当該第1母線電圧が当該第2母線電圧以上となる駆動信号の生成指示を出力し、当該第1母線電圧が当該第2母線電圧を超える場合には、当該第1母線電圧が当該第2母線電圧以下となる駆動信号の生成指示を出力する母線電圧制御部と、
前記生成指示に対応する駆動信号を生成し、当該駆動信号を前記短絡制御部に出力する駆動信号生成部と
を備えることを特徴とするインバータ制御装置。 - 前記記憶部は、前記脱調限界に関する情報として、脱調限界磁石温度データ、磁力温度特性データ、及び脱調限界母線電圧データを記憶し、
前記母線電圧算出部は、
前記磁石温度と、前記脱調限界磁石温度データとに基づいて磁石温度差を算出し、
当該磁石温度差と、前記磁力温度特性データとに基づいて磁力変化割合の逆数を算出し、
当該磁力変化割合の逆数と、前記脱調限界母線電圧データとに基づいて前記第2の母線電圧を算出する、
ことを特徴とする請求項7に記載のインバータ制御装置。 - 前記記憶部は、前記脱調限界に関する情報として、脱調限界電力データ及び脱調限界母線電圧データを記憶し、
前記脱調限界電力算出部は、
前記一次電力と、前記脱調限界電力データとに基づいて電力比を算出し、
当該電圧比と、前記脱調限界母線電圧データとに基づいて前記第2の母線電圧を算出する、
ことを特徴とする請求項7に記載のインバータ制御装置。 - 前記磁石温度検出部が、磁石から間接的に検出した温度を換算して磁石温度を算出することを特徴とする請求項1,2,4,5,7及び8のいずれか一つに記載のインバータ制御装置。
- 請求項1,4及び7のいずれか一つに記載のインバータ制御装置を備えたことを特徴とする空気調和機。
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2015383429A AU2015383429B2 (en) | 2015-02-19 | 2015-02-19 | Inverter control device and air conditioner |
EP18167601.6A EP3367555B1 (en) | 2015-02-19 | 2015-02-19 | Inverter control device and air conditioner |
CN201910373306.4A CN110048616B (zh) | 2015-02-19 | 2015-02-19 | 逆变器控制装置以及空气调节机 |
CN201580074554.9A CN107231824B (zh) | 2015-02-19 | 2015-02-19 | 逆变器控制装置以及空气调节机 |
EP15871302.4A EP3086466B1 (en) | 2015-02-19 | 2015-02-19 | Inverter control device and air conditioner |
PCT/JP2015/054618 WO2016132509A1 (ja) | 2015-02-19 | 2015-02-19 | インバータ制御装置及び空気調和機 |
US15/531,227 US10050576B2 (en) | 2015-02-19 | 2015-02-19 | Inverter control device and air conditioner |
JP2017500221A JP6271075B2 (ja) | 2015-02-19 | 2015-02-19 | インバータ制御装置及び空気調和機 |
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WO2019163729A1 (ja) * | 2018-02-23 | 2019-08-29 | 三菱電機株式会社 | モータ駆動装置、及びモータ駆動システム |
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JP6431132B1 (ja) * | 2017-05-30 | 2018-11-28 | ファナック株式会社 | 漏れ電流の大きい逆変換器を検知するモータ駆動装置 |
CN113294935B (zh) * | 2021-05-27 | 2022-12-16 | 广东纽恩泰新能源科技发展有限公司 | 一种热泵变频机组频率调整方法和装置 |
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WO2019163729A1 (ja) * | 2018-02-23 | 2019-08-29 | 三菱電機株式会社 | モータ駆動装置、及びモータ駆動システム |
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JPWO2019163729A1 (ja) * | 2018-02-23 | 2020-02-27 | 三菱電機株式会社 | モータ駆動装置、及びモータ駆動システム |
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AU2015383429B2 (en) | 2018-08-09 |
US20170331407A1 (en) | 2017-11-16 |
EP3367555B1 (en) | 2021-03-24 |
JPWO2016132509A1 (ja) | 2017-06-29 |
CN107231824B (zh) | 2019-08-06 |
CN110048616B (zh) | 2020-12-01 |
US10050576B2 (en) | 2018-08-14 |
EP3367555A1 (en) | 2018-08-29 |
CN110048616A (zh) | 2019-07-23 |
EP3086466A1 (en) | 2016-10-26 |
EP3086466B1 (en) | 2020-09-09 |
JP6271075B2 (ja) | 2018-01-31 |
AU2015383429A1 (en) | 2017-06-15 |
EP3086466A4 (en) | 2017-11-29 |
CN107231824A (zh) | 2017-10-03 |
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