WO2012053304A1 - 回転電機及び車載回転電機システム - Google Patents
回転電機及び車載回転電機システム Download PDFInfo
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- WO2012053304A1 WO2012053304A1 PCT/JP2011/071299 JP2011071299W WO2012053304A1 WO 2012053304 A1 WO2012053304 A1 WO 2012053304A1 JP 2011071299 W JP2011071299 W JP 2011071299W WO 2012053304 A1 WO2012053304 A1 WO 2012053304A1
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- rotating electrical
- electrical machine
- vehicle
- converter
- machine system
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/51—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by AC-motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
- B60L53/22—Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
- B60L53/24—Using the vehicle's propulsion converter for charging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L9/00—Electric propulsion with power supply external to the vehicle
- B60L9/16—Electric propulsion with power supply external to the vehicle using ac induction motors
- B60L9/18—Electric propulsion with power supply external to the vehicle using ac induction motors fed from dc supply lines
- B60L9/22—Electric propulsion with power supply external to the vehicle using ac induction motors fed from dc supply lines polyphase motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/0094—Structural association with other electrical or electronic devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2210/00—Converter types
- B60L2210/10—DC to DC converters
- B60L2210/14—Boost converters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2220/00—Electrical machine types; Structures or applications thereof
- B60L2220/50—Structural details of electrical machines
- B60L2220/54—Windings for different functions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2270/00—Problem solutions or means not otherwise provided for
- B60L2270/10—Emission reduction
- B60L2270/14—Emission reduction of noise
- B60L2270/147—Emission reduction of noise electro magnetic [EMI]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Definitions
- the present invention relates to a rotating electrical machine and a vehicle-mounted rotating electrical machine system that uses the rotating electrical machine.
- an electric vehicle or the like that is driven by a battery has a circuit for driving and controlling a rotating electrical machine and an external power transfer circuit (mainly a charging circuit).
- An object of the present invention is to provide a rotating electrical machine that is further downsized and an in-vehicle rotating electrical machine system that uses the rotating electrical machine.
- the rotary electric machine includes a rotor and a stator iron core.
- the stator iron core is wound in an insulated state, and is formed in a transformer primary coil connected to a power circuit, and is wound in the stator iron core in an insulated state, and is connected to a battery via a DC / AC converter.
- a transformer secondary coil connected to
- FIG. 1 is a sectional view showing a schematic configuration of a first embodiment of a rotating electrical machine according to the present invention.
- FIG. 2 is a perspective view showing the main part of the first embodiment of the rotating electrical machine according to the present invention.
- FIG. 3 is a diagram showing an in-vehicle rotating electrical machine system using the rotating electrical machine according to the present invention.
- FIG. 4 is a diagram illustrating the installation of the reactor when the rotating electrical machine is an in-wheel type.
- FIG. 5 is a perspective view showing a main part of a second embodiment of the rotating electrical machine according to the present invention.
- FIG. 6 is a cross-sectional view showing a third embodiment of the rotating electrical machine according to the present invention.
- FIG. 1 is a sectional view showing a schematic configuration of a first embodiment of a rotating electrical machine according to the present invention.
- FIG. 2 is a perspective view showing the main part of the first embodiment of the rotating electrical machine according to the present invention.
- FIG. 3 is a diagram showing an in
- FIG. 7A is a diagram for explaining the function and effect of the third embodiment of the rotating electrical machine according to the present invention.
- FIG. 7B is a diagram for explaining the operational effects of the third embodiment of the rotating electrical machine according to the present invention.
- FIG. 8 is a diagram showing a second embodiment of the in-vehicle rotating electrical machine system according to the present invention.
- FIG. 9 is a diagram showing a third embodiment of the in-vehicle rotating electrical machine system according to the present invention.
- FIG. 10 is a diagram showing a fourth embodiment of the in-vehicle rotating electrical machine system according to the present invention.
- FIG. 11 is a diagram showing a fifth embodiment of the in-vehicle rotating electrical machine system according to the present invention.
- FIG. 12 is a diagram showing a sixth embodiment of the in-vehicle rotating electrical machine system according to the present invention.
- FIG. 13 is a diagram showing a seventh embodiment of the in-vehicle rotating electrical machine system according to the present invention.
- FIG. 14 is a view showing an eighth embodiment of the in-vehicle rotating electrical machine system according to the present invention.
- FIG. 15 is a diagram showing a ninth embodiment of the in-vehicle rotating electrical machine system according to the present invention.
- FIG. 1 is a sectional view showing a schematic configuration of a first embodiment of a rotating electrical machine according to the present invention.
- the rotary electric machine 1 will be described by taking a three-phase 12-pole 18-slot permanent magnet type three-phase AC motor as an example.
- the gist of the invention will be briefly described first.
- An electric vehicle or the like that runs on a battery has a circuit that controls driving of the rotating electrical machine and an external power transfer circuit (mainly a charging circuit). These circuits are large in size. Therefore, it is desired to further reduce the size of these circuits.
- the inventor of the present invention pays attention to the fact that the circuit for driving and controlling the rotating electrical machine and the external power transfer circuit (mainly charging circuit) use many similar parts but are not used at the same time. Inspired by sharing the circuit. Specific invention contents will be described below.
- the rotating electrical machine 1 includes a rotor 10 and a stator 20.
- the rotor 10 includes a shaft 11, a rotor iron core 12, and a permanent magnet 13.
- the shaft 11 is the rotation center axis of the rotor 10.
- the rotor core 12 is attached around the shaft 11.
- the rotor core 12 is formed by laminating a large number of thin circular steel plates.
- a hole is formed in the outer peripheral portion of the rotor core 12.
- a permanent magnet 13 is inserted into the hole.
- the permanent magnet 13 extends over almost the entire length of the rotor 10.
- the permanent magnets 13 are arranged so that the magnetic poles of adjacent permanent magnets are different from each other.
- the stator 20 includes a stator iron core 21 and a stator coil 22.
- the stator 20 is disposed on the outer periphery of the rotor 10.
- the stator iron core 21 is formed by laminating a large number of thin steel plates. Teeth 211 is formed on the inner peripheral side of the stator core 21.
- the stator coil 22 is wound around the tooth 211 via an insulating layer.
- the stator iron core 21 is formed with a hole 21a.
- a tab 212 in which a part of the stator core 21 is protruded is formed.
- a hole 21 a is formed in the tab 212.
- FIG. 2 is a perspective view showing the main part of the first embodiment of the rotating electrical machine according to the present invention.
- a U-phase AC power line, a V-phase AC power line, and a W-phase AC power line are arranged along the back yoke 213 of the stator core 21. Further, an N line that is a neutral point is arranged. Stator coil 22 formed on teeth 211 is connected to N line and one of the AC power lines.
- the stator coil (U-phase coil) 22 formed on the left tooth 211 is connected to the N-line and the U-phase AC power line.
- Stator coil (V-phase coil) 22 formed in middle tooth 211 is connected to the N line and the V-phase AC power line.
- Stator coil 22 (W-phase coil) formed on right tooth 211 is connected to the N line and the W-phase AC power line.
- the primary coil 41 and the secondary coil 42 are wound through the hole 21a and the outside of the stator core 21.
- the primary coil 41 is connected to a power circuit as will be described later.
- the secondary coil 42 has one end connected to a neutral point (N line) and the other end connected to the DC / AC converter 7 as described later.
- a transformer is formed by the primary coil 41, the secondary coil 42, and the stator core 21.
- the overall size is small as compared with the case of using a separate component transformer.
- FIG. 3 is a diagram showing an in-vehicle rotating electrical machine system using the rotating electrical machine according to the present invention.
- the in-vehicle rotating electrical machine system S includes a rotating electrical machine 1, a DC / AC converter 7, a battery 8, and a power circuit 9.
- the DC / AC converter 7 is provided between the rotating electrical machine 1 and the battery 8.
- the DC / AC converter 7 has both an inverter function that converts DC power from the battery 8 into AC and a converter function that converts AC power from the rotating electrical machine 1 into DC.
- the DC / AC converter 7 includes a positive side DC power line 71p, a negative side DC power line 71n, a U-phase AC power line 72u, a V-phase AC power line 72v, and a W-phase AC power line 72w.
- the positive side DC power line 71 p is connected to the positive electrode of the battery 8.
- the negative side DC power line 71 n is connected to the negative electrode of the battery 8.
- a capacitor 75 is connected in parallel with the battery 8 between the positive side DC power line 71p and the negative side DC power line 71n. The capacitor 75 smoothes the DC power.
- the U-phase AC power line 72u is connected to the U-phase coil of the rotating electrical machine 1.
- V-phase AC power line 72v is connected to the V-phase coil of rotating electrical machine 1.
- W-phase AC power line 72 w is connected to the W-phase coil of rotating electrical machine 1.
- the DC / AC converter 7 includes six IGBT modules (positive U-phase IGBT module, negative U-phase IGBT module, positive V-phase IGBT module, negative V-phase IGBT module, positive DC line between the DC power line and the AC power line. Side W-phase IGBT module, negative W-phase IGBT module).
- Each IGBT module (switching module) includes a switching element IGBT (Insulated Gate Bipolar Transistor) and a rectifier element (rectifier diode; Free Wheeling Diode) connected in parallel in the reverse direction to the IGBT. Included).
- Each IGBT module is turned on / off based on a pulse width modulation (PWM) signal of the controller 100.
- PWM pulse width modulation
- the primary coil 41 of the rotating electrical machine 1 is connected to the power circuit 9 and is finally connected to an external power source via an insertion port.
- the secondary coil 42 of the rotating electrical machine 1 has one end connected to a neutral point (N line) and the other end connected to a negative-side DC power line 71n via a reactor 51 and a switch 52.
- the switch 52 when the rotating electrical machine 1 is driven to travel, the switch 52 is turned off. Then, the electric power of the battery 8 is converted into alternating current by the DC / AC converter 7 and supplied to the rotating electrical machine 1 to drive the rotating electrical machine 1. In addition, the regenerative power of the rotating electrical machine 1 is converted into direct current by the direct current alternating current converter 7 and supplied to the battery 8 to charge the battery 8. By using the switch 52 in this way, the current can be interrupted.
- the switch 52 When charging the battery 8 using the external power source, the switch 52 is turned on and connected to the external power source. Then, AC power from the external power source is transmitted to the primary coil 41. As described above, since the transformer is formed by the primary coil 41, the secondary coil 42, and the stator core 21, the electric power boosted to an appropriate voltage is converted from the secondary coil 42 to direct current by the direct current alternating current converter 7. The battery 8 is charged by being supplied to the battery 8.
- the primary coil 41, the secondary coil 42, and the stator core 21 form a transformer for charging using an external power source.
- the battery 8 is insulated from the power supply outside the vehicle. If it is not insulated, a situation may occur in which the high voltage of the battery 8 is applied to the jack to the external power source when some failure occurs. However, such a problem does not occur if they are connected via a transformer as in this embodiment.
- a transformer function is built in the rotating electrical machine 1 instead of providing a separate transformer. Accordingly, the overall size can be reduced as compared with the case of using a separate component transformer, and the manufacturing cost can be reduced.
- the DC / AC converter 7 that is normally used for driving the rotating electrical machine 1 is configured to be usable as a power converter between the secondary coil 42 and the battery 8. . Therefore, the number of DC / AC converters for charging can be reduced by one and the size can be reduced.
- FIG. 4 is a diagram for explaining the installation of the reactor when the rotating electrical machine is an in-wheel type.
- the inductance (hereinafter referred to as “zero-phase inductance”) between the neutral point of the rotating electrical machine and the battery 8 is small in a general rotating electrical machine. For this reason, there is a problem that current ripple due to PWM becomes enormous and loss and radiation noise increase. What is necessary is just to provide a reactor in order to solve this.
- a reactor that can absorb charging power fluctuations synchronized with the PWM frequency of the charging current in other words, a reactor having a large energy storage capacity is large in size.
- the reactor 51 shown in FIG. 3 can be a motor room (plug-in hybrid electric vehicle (PHEV)). In the engine room).
- PHEV plug-in hybrid electric vehicle
- the size of the reactor 51 is large, there is a possibility that the cabin space of the vehicle is narrowed.
- the inventor of the present invention has come up with the idea of installing a reactor 51 in this space. If it does in this way, the space efficiency by an in-wheel rotary electric machine unit can be raised, and the cabin space of a vehicle is not narrowed.
- FIG. 5 is a perspective view showing a main part of a second embodiment of the rotating electrical machine according to the present invention.
- a part of the rotating electrical machine 1 is shared to obtain a reactor function.
- a slit hole 21 b is formed in the stator core 21.
- the slit hole 21 b is formed particularly in the tab 212.
- a reactor coil 51 a is formed so as to pass outside the slit hole 21 b and the stator core 21.
- Reactor coil 51 a has one end connected to secondary coil 42 and the other end connected to DC / AC converter 7.
- the reactor is formed by the reactor coil 51a and the stator core 21.
- the reactor function can be obtained by sharing a part of the rotating electrical machine 1, the overall size is small and the manufacturing cost is low as compared with the case of using a separate reactor.
- FIG. 6 is a cross-sectional view showing a third embodiment of the rotating electrical machine according to the present invention.
- the transformer function is realized by forming the primary coil 41 and the secondary coil 42 so as to pass outside the hole 21a and the stator core 21.
- the primary coil 41 and the secondary coil 42 are formed on the teeth 211 of the stator core 21 with a predetermined pitch number and a predetermined distribution number so as to realize a transformer function. .
- the primary coil 41 includes a first coil 411, a second coil 412, and a third coil 413. That is, the primary coil 41 consists of three coils, and the distribution number is three. Moreover, the 1st coil 411, the 2nd coil 412, and the 3rd coil 413 are formed over six teeth. That is, the pitch number is six.
- the secondary coil 42 is the same as the primary coil 41. That is, the secondary coil 42 includes a first coil 421, a second coil 422, and a third coil 423. That is, the secondary coil 42 consists of three coils, and the distribution number is three. Moreover, the 1st coil 421, the 2nd coil 422, and the 3rd coil 423 are formed over six teeth. That is, the pitch number is six.
- FIG. 7A and FIG. 7B are diagrams illustrating the operational effects of the third embodiment of the rotating electrical machine according to the present invention.
- the primary coil 41 and the secondary coil 42 are formed on the teeth 211 of the stator core 21 so as to face each other.
- an alternating current is passed through the primary coil 41 in this way, a magnetic flux is generated as shown by an arrow in FIG. 7A, and an alternating current also flows through the secondary coil 42 by the mutual induction action, thereby obtaining a transformer function. That is, according to the present embodiment, the hole 21a required in the first embodiment is unnecessary, and the size is further reduced as compared with the first embodiment.
- neither the primary coil 41 nor the secondary coil 42 is formed on the teeth 211a of the stator iron core 21. If it does in this way, as shown by the arrow in Drawing 7B, the leakage flux of a transformer will arise, the self inductance of a transformer will increase, and a reactor action will occur. As a result, the shortage of zero phase inductance of the rotating electrical machine can be compensated. Therefore, the reactor becomes unnecessary, or a reactor having a small energy storage capacity can be used, so that the manufacturing cost can be reduced and the overall size is reduced.
- the number of coil pitches is set to an integral multiple of the value (3) obtained by dividing the number of slots (18) by the number of pole pairs (6).
- the number of coils distributed was an integral multiple of the value (3) obtained by dividing the number of slots (18) by the number of pole pairs (6).
- the number of coil pitches and the number of distributions are integral multiples of the polar arc, so that the transformer magnetic flux flows evenly to the north and south poles of the magnet. it can.
- the winding coefficient is zero, no torque is generated even when a current flows through the coil.
- the short-pitch coefficient becomes zero.
- the distribution coefficient becomes zero by making the number of coil distributions an integral multiple of the value obtained by dividing the number of slots by the number of pole pairs. Therefore, by configuring as in the present embodiment, a transformer function can be obtained without generating torque.
- FIG. 8 is a diagram showing a second embodiment of the in-vehicle rotating electrical machine system according to the present invention.
- the reactor 51 and the negative DC power line 71n are connected via the switch 52, but in this embodiment, a capacitor 53 is used instead of the switch 52 in FIG.
- the capacitor 53 is used instead of the switch 52 of the first embodiment, so that the same function as that of the first embodiment can be achieved at a low cost.
- FIG. 9 is a diagram showing a third embodiment of the in-vehicle rotating electrical machine system according to the present invention.
- a capacitor 751 and a capacitor 752 connected in series are connected to the battery 8 in parallel.
- Reactor 51 has one end connected to secondary coil 42 and the other end connected between capacitors 751 and 752.
- the capacitor 752 also functions as the capacitor 53 in FIG. Therefore, the manufacturing cost can be reduced as compared with the second embodiment. Also, the overall size can be reduced.
- FIG. 10 is a diagram showing a fourth embodiment of the in-vehicle rotating electrical machine system according to the present invention.
- the power circuit 9 of the present embodiment includes an AC / AC converter in which a diode bridge type full-wave rectifier, a power factor correction circuit, and a MOSFET type inverter are combined.
- the power circuit 9 rectifies the frequency (50 to 60 Hz) of the external power source, converts it to direct current, and converts it into an alternating current such as a sine wave of several hundred Hz to several kHz by an inverter.
- the operating frequency of the transformer and the capacitor can be increased, so that the energy storage amount is reduced. As a result, the manufacturing cost can be reduced and the overall size can be reduced.
- the current flowing through the rotating electrical machine during charging can be increased in frequency, vibration attenuation due to the minute torque of the rotating electrical machine can be increased. That is, even when the frequency of the external power supply is about 50 to 60 Hz, it is possible to prevent noise and vibration from the rotating electric machine during charging.
- the diode bridge type full-wave rectifier is used.
- the present invention is not limited to this.
- a full-bridge full-wave rectifier composed of a MOSFET or the like may be used. This is particularly effective when power is returned from the vehicle to the external power source (so-called power sale).
- FIG. 11 is a diagram showing a fifth embodiment of the in-vehicle rotating electrical machine system according to the present invention.
- the power factor correction circuit provided in the fourth embodiment is omitted, and the DC factor converter (rotary electric machine driving inverter) 7 executes the power factor correction control.
- the charging power supplied from the power supply outside the vehicle is obtained by multiplying the transformer current by the transformer voltage. Since the transformer current can be controlled by the inverter 7 for driving the rotating electrical machine, the electric power on the external power source side can be controlled. Specifically, in order to make the vehicle power supply side current a sine wave having a power factor of 1, the transformer current is set so that the power proportional to the square of the voltage Vs becomes a frequency component twice the power supply frequency outside the vehicle. Can be produced by the inverter 7 for driving the rotating electrical machine. That is, (Transformer current amplitude) ⁇ Vs 2 ⁇ (Transformer voltage amplitude)
- This control eliminates the need for a power factor correction circuit dedicated to the external power supply side, thereby reducing the manufacturing cost and reducing the overall size.
- FIG. 12 is a diagram showing a sixth embodiment of the in-vehicle rotating electrical machine system according to the present invention.
- This embodiment shows an example in which the above embodiments are optimally combined.
- the secondary coil 42 has one end connected to a neutral point (N line) and the other end connected between a capacitor 751 and a capacitor 752. Further, the power factor improvement control is executed by the DC / AC converter (rotary electric machine drive inverter) 7 without providing a power factor improvement circuit.
- DC / AC converter rotary electric machine drive inverter
- FIG. 13 is a diagram showing a seventh embodiment of the in-vehicle rotating electrical machine system according to the present invention.
- the charging power supplied from the external power source is obtained by multiplying the transformer current by the transformer voltage.
- the transformer current and transformer voltage are controlled.
- the transformer current can be controlled by the inverter 7 for driving the rotating electrical machine.
- the transformer voltage can be controlled by the AC / AC converter of the power circuit 9.
- phase of the transformer current controlled by the rotating electrical machine drive inverter 7 and the phase of the transformer voltage controlled by the AC / AC converter of the power circuit 9 are controlled to coincide with each other.
- the transformer operating power factor increases. If the power factor is increased, the transformer and the coupling capacitor can be miniaturized and the manufacturing cost can be reduced.
- FIG. 14 is a view showing an eighth embodiment of the in-vehicle rotating electrical machine system according to the present invention.
- the power circuit 9 of the present embodiment forms a resonance circuit by connecting a capacitor 91 in parallel with the primary coil 41.
- the transformer operating power factor increases. If the power factor is increased, the transformer and the coupling capacitor can be miniaturized and the manufacturing cost can be reduced. Moreover, since the voltage of the inverter INV in the AC / AC converter of the power circuit 9 can be suppressed, a small inverter can be used.
- FIG. 15 is a diagram showing a ninth embodiment of the in-vehicle rotating electrical machine system according to the present invention.
- the power circuit 9 of the present embodiment is a circuit that supplies current to an auxiliary battery mounted on the vehicle and charges the auxiliary battery (voltage 12 to 14 V) mounted on the vehicle.
- the configurations of the rotating electrical machine 1 and the transformer are the same as those in the above embodiments, and it is possible to reduce the size and cost of the entire apparatus in the same way.
- the hole 21a is formed in the tab 212 in which a part of the stator iron core 21 is protruded is illustrated.
- the hole 21a is formed in the stator iron core 21 without forming the tab 212. May be.
- the case where the battery 8 is charged by using the external power source has been described as an example. It can also be applied to power transmission systems.
- radial gap motor has been described as an example in the above embodiment, it may be applied to an axial gap motor.
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Abstract
Description
<回転電機の構造>
図1は、本発明による回転電機の第1実施形態の概略構成を示す断面図である。
図3は、本発明による回転電機を使用する車載回転電機システムを示す図である。
図5は、本発明による回転電機の第2実施形態の主要部を示す斜視図である。
図6は、本発明による回転電機の第3実施形態を示す断面図である。
図8は、本発明による車載回転電機システムの第2実施形態を示す図である。
図9は、本発明による車載回転電機システムの第3実施形態を示す図である。
図10は、本発明による車載回転電機システムの第4実施形態を示す図である。
図11は、本発明による車載回転電機システムの第5実施形態を示す図である。
(トランス電流振幅)∝Vs2÷(トランス電圧振幅)
図12は、本発明による車載回転電機システムの第6実施形態を示す図である。
図13は、本発明による車載回転電機システムの第7実施形態を示す図である。
図14は、本発明による車載回転電機システムの第8実施形態を示す図である。
図15は、本発明による車載回転電機システムの第9実施形態を示す図である。
Claims (20)
- ローター(10)と、
ステーター鉄心(21)と、
前記ステーター鉄心(21)に絶縁状態で巻かれて形成されるとともに、電力回路(9)に接続されるトランス一次コイル(41)と、
前記ステーター鉄心(21)に絶縁状態で巻かれて形成されるとともに、直流交流変換器(7)を介してバッテリー(8)に接続されるトランス二次コイル(42)と、
を含む回転電機。 - 請求項1に記載の回転電機において、
前記直流交流変換器(7)は、直流電力線(71p,71n)がバッテリー(8)に接続され、交流電力線(72u,72v,72w)が前記ステーター鉄心(21)のティース(211)に絶縁状態で巻かれて形成されるステーターコイル(22)に接続され、
前記トランス二次コイル(42)は、一端が回転電機の中性点に接続され、他端が前記直流交流変換器(7)の正側直流電力線(71p)又は負側直流電力線(71n)に接続される、
回転電機。 - 請求項1又は請求項2に記載の回転電機において、
前記ステーター鉄心(21)は、前記ローター(10)の外に配置されるとともに、ローター軸方向に貫通するトランス形成孔(21a)を有し、
前記トランス一次コイル(41)及び前記トランス二次コイル(42)は、前記トランス形成孔(21a)を挿通して前記ステーター鉄心(21)に巻かれて形成される、
回転電機。 - 請求項1又は請求項2に記載の回転電機において、
前記トランス一次コイル(41)及び前記トランス二次コイル(42)は、前記ステーター鉄心(21)の軸を対称に互いに対向するように前記ステーター鉄心(21)のティース(211)に巻かれて形成される、
回転電機。 - 請求項4に記載の回転電機において、
前記トランス一次コイル(41)及び前記トランス二次コイル(42)は、所定のピッチ数及び所定の分布数で前記ステーター鉄心(21)のティース(211)に巻かれて形成されるが、少なくとも1ペアのティース(211a)には巻かれない、
回転電機。 - 請求項5に記載の回転電機において、
前記所定のピッチ数は、スロット数を極対数で除算した値の整数倍である、
回転電機。 - 請求項5又は請求項6に記載の回転電機において、
前記所定の分布数は、スロット数を極対数で除算した値の整数倍である、
回転電機。 - 請求項1から請求項7までのいずれか1項に記載の回転電機において、
ロードホイール(201)の内周側に配置されるインホイールタイプであり、
前記トランス二次コイル(42)と前記直流交流変換器(7)との間に接続されるとともに、回転電機ハウジングの外周に配置されるリアクトル(51)をさらに含む、
回転電機。 - 請求項1から請求項7までのいずれか1項に記載の回転電機において、
前記ステーター鉄心(21)は、ローター軸方向に貫通するリアクトル形成孔(21b)を有し、
前記トランス二次コイル(42)と前記直流交流変換器(7)との間に接続されるとともに、前記リアクトル形成孔(21b)を挿通して前記ステーター鉄心(21)に巻かれたコイル(51a)で形成されるリアクトル(51)をさらに含む、
回転電機。 - 請求項1から請求項7までのいずれか1項に記載の回転電機を使用する車載回転電機システムにおいて、
前記トランス一次コイル(41)に接続される電力回路(9)と、
前記トランス二次コイル(42)及びステーターコイル(22)に接続される直流交流変換器(7)と、
前記直流交流変換器(7)に接続されるバッテリー(8)と、
を有し、
前記トランス二次コイル(42)に接続され、前記回転電機がトルクを出力しているときにトランス二次コイル(42)に流れる電流を遮断する電流断続器(52,53,752)をさらに含む、
車載回転電機システム。 - 請求項10に記載の車載回転電機システムにおいて、
前記電流断続器は、前記トランス二次コイル(42)と前記直流交流変換器(7)との間に配置され、前記回転電機がトルクを出力しているときに開放するスイッチ(52)である、
車載回転電機システム。 - 請求項10に記載の車載回転電機システムにおいて、
前記電流断続器は、前記トランス二次コイル(42)と前記直流交流変換器(7)との間に配置されたコンデンサー(53)である、
車載回転電機システム。 - 請求項8又は請求項9に記載の回転電機を使用する車載回転電機システムにおいて、
前記トランス一次コイル(41)に接続される電力回路(9)と、
前記リアクトル(51)及びステーターコイル(22)に接続される直流交流変換器(7)と、
前記直流交流変換器(7)に接続されるバッテリー(8)と、
を有し、
前記リアクトル(51)に接続され、前記回転電機がトルクを出力しているときにリアクトル(51)に流れる電流を遮断する電流断続器(52,53,752)をさらに含む、
車載回転電機システム。 - 請求項13に記載の車載回転電機システムにおいて、
前記電流断続器は、前記リアクトル(51)と前記直流交流変換器(7)との間に配置され、前記回転電機がトルクを出力しているときに開放するスイッチ(52)である、
車載回転電機システム。 - 請求項13に記載の車載回転電機システムにおいて、
前記電流断続器は、前記リアクトル(51)と前記直流交流変換器(7)との間に配置されたコンデンサー(53)である、
車載回転電機システム。 - 請求項10又は請求項13に記載の車載回転電機システムにおいて、
前記電流断続器は、前記直流交流変換器(7)のコンデンサー(752)で兼用される、
車載回転電機システム。 - 請求項10から請求項16までのいずれか1項に記載の車載回転電機システムにおいて、
前記電力回路(9)は、力率改善回路を含む、
車載回転電機システム。 - 請求項10から請求項16までのいずれか1項に記載の車載回転電機システムにおいて、
前記直流交流変換器(7)は、車外電源側交流の電流及び電圧に基づいて、力率改善制御を実行する、
車載回転電機システム。 - 請求項10から請求項18までのいずれか1項に記載の車載回転電機システムにおいて、
前記電力回路(9)は、前記トランス一次コイル(41)の電圧を制御し、
前記直流交流変換器(7)は、前記トランス二次コイル(42)の電流を制御し、
前記電力回路(9)及び前記直流交流変換器(7)は、前記トランス一次コイル(41)の電圧の位相と前記トランス二次コイル(42)の電流の位相とが一致するように制御する、
車載回転電機システム。 - 請求項10から請求項19までのいずれか1項に記載の車載回転電機システムにおいて、
前記トランス一次コイル(41)に並列に接続されるコンデンサー(91)をさらに含む、
車載回転電機システム。
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US13/880,257 US9227518B2 (en) | 2010-10-19 | 2011-09-20 | Rotary electric machine and in-vehicle rotary electric machine system |
CN201180050722.2A CN103201930B (zh) | 2010-10-19 | 2011-09-20 | 车载旋转电机系统 |
EP11834146.0A EP2632023B1 (en) | 2010-10-19 | 2011-09-20 | Dynamo-electric machine and on-vehicle dynamo-electric machine system |
JP2012539645A JP5742850B2 (ja) | 2010-10-19 | 2011-09-20 | 回転電機システム |
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WO2021181824A1 (ja) * | 2020-03-09 | 2021-09-16 | 日立Astemo株式会社 | 回転電機の固定子、回転電機、および車両駆動装置 |
JP2021141774A (ja) * | 2020-03-09 | 2021-09-16 | 日立Astemo株式会社 | 回転電機の固定子、回転電機、および車両駆動装置 |
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JP2022030833A (ja) * | 2020-08-07 | 2022-02-18 | 株式会社Ihi | 磁極および磁気軸受 |
JP7512753B2 (ja) | 2020-08-07 | 2024-07-09 | 株式会社Ihi | 磁極および磁気軸受 |
Also Published As
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JP5742850B2 (ja) | 2015-07-01 |
EP2632023A1 (en) | 2013-08-28 |
CN103201930A (zh) | 2013-07-10 |
EP2632023A4 (en) | 2016-07-20 |
EP2632023B1 (en) | 2019-06-26 |
US20130200697A1 (en) | 2013-08-08 |
US9227518B2 (en) | 2016-01-05 |
JPWO2012053304A1 (ja) | 2014-02-24 |
CN103201930B (zh) | 2016-01-27 |
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