专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH08237985A MOTOR DRIVER 失效
公开(公告)号：JPH08237985A
公开(公告)日：1996-09-13
申请号：JP3647095
申请日：1995-02-24
申请人： HITACHI LTD , HITACHI TAGA MOTOR KK
发明人： YASUJIMA TOSHIYUKI , TAWARA KAZUO , MIYASHITA KUNIO , GOMITA HISAMITSU , KONNO TAKEO , MORIYAMA KAZUYOSHI
IPC分类号： H02P25/04 , H02P21/02 , H02P21/04 , H02P21/14 , H02P21/18 , H02P21/20 , H02P21/24 , H02P21/34 , H02P23/02 , H02P23/03 , H02P23/07 , H02P23/14 , H02P23/16 , H02P23/24 , H02P27/02 , H02P5/402
摘要： PURPOSE: To obtain an appropriate torque while minimizing the input power by simulating the speed-torque characteristics of a motor to detect the torque of the motor and then switching a plurality of capacitors depending on the torque. CONSTITUTION: A characteristics simulator 30 stores motor characteristics corresponding to the capacity of capacitor and determines the torque TO1-TO3 of each characteristics from the rotational speed N. A torque setter 34 estimates the load torque level TR from the load mode MOD. A comparator 31 compares the load torque level TR with the torque TO1-TO3 of each characteristics and selects the minimum operable characteristics. A characteristics switch 32 generates a signal providing a capacitance for realizing the selected characteristics and delivers gate signals G1, G2 through a drive circuit. A signal for determining the rotational direction based on a rotational direction command AL is then generated from a signal generator 33 and gate signals G3, G4 are delivered through the drive circuit 35.

2. 发明专利

JPH10295065A SINGLE-PHASE INDUCTION MOTOR 失效
公开(公告)号：JPH10295065A
公开(公告)日：1998-11-04
申请号：JP10003497
申请日：1997-04-17
申请人： HITACHI LTD , HITACHI TAGA MOTOR KK
发明人： YASUJIMA TOSHIYUKI , TAWARA KAZUO , MORIYAMA KAZUYOSHI , KONNO TAKEO , MIYASHITA KUNIO
IPC分类号： H02K1/16 , H02K17/08
摘要： PROBLEM TO BE SOLVED: To reduce the wire diameter of a winding the consumption amount of copper for the winding, and the cost by a method, wherein an inside main winding and an outside main winding are arranged concentrically around the magnetic pole of a main winding and an inside auxiliary winding and an outside auxiliary winding are arranged concentrically around the magnetic pole of an auxiliary winding. SOLUTION: In a main winding 10, an inside winding 10A which is wound at two-slot pitches and an outside winding 10B which is wound at four-slot pitches are wound around a curved teeth part. In an auxiliary winding 11, an inside winding 11A which is wound at two-slot pitches and an outside winding 11B which is wound at four-slot pitches are wound around the curved teeth part in such a way that the auxiliary winding 11 is deviated by an electrical angle of 90 deg. (a mechanical angle of 45 deg.) from the main winding 10. Thereby, the overlap of the coil end of the main winding 10 with the coil end of the auxiliary winding 11 is eliminated, and the length in the axial direction of a stator can be made short. At the same time, the circumferential length of the windings can be made short, and the resistance value of the windings can be reduced. The wire diameter of the windings can be made small according to the reduction portion of the resistance value of the windings, and the consumption amount of copper for the windings can be reduced.

3. 发明专利

JPH10295064A SINGLE-PHASE INDUCTION MOTOR 失效
公开(公告)号：JPH10295064A
公开(公告)日：1998-11-04
申请号：JP10003297
申请日：1997-04-17
申请人： HITACHI LTD , HITACHI TAGA MOTOR KK
发明人： YASUJIMA TOSHIYUKI , TAWARA KAZUO , MORIYAMA KAZUYOSHI , KONNO TAKEO , MIYASHITA KUNIO
IPC分类号： D06F37/30 , H02K1/16 , H02K17/08
摘要： PROBLEM TO BE SOLVED: To reduce the wire diameter of a winding and the consumption amount of copper for the winding by a method, wherein an inside main winding and an outside main winding are arranged concentrically around an upright teeth part on the side of a main winding and an inside auxiliary winding, and an outside auxiliary winding are arranged concentrically around an upright teeth part on the side of an auxiliary winding. SOLUTION: In a main winding 10, an inside winding 10A which is wound at three- slot pitches and an outside winding 10B which is wound at five-slot pitches are wound around a straight teeth part. In an auxiliary winding 11, an inside winding 11A which is wound at three-slot pitches and an outside winding 11B which is wound at five-slot pitches are wound around a straight teeth part, in such a way that the auxiliary winding is deviated by an electrical angle of 90 deg. (by a mechanical angle of 45 deg.) from the main winding 10. Thereby, the overlap of the coil end part of the main winding 10 with the coil end part of the auxiliary winding 11 is eliminated, and the length in the axial direction of a stator can be made short. At the same time, the circumferential length of the windings can be made short, and the resistance value of the windings can be made small. The wire diameter of the windings can be made small, according to the reduction portion of the resistance value of the windings.

4. 发明专利

JP2007267514A Electric four-wheel drive vehicle and electric motor for use therein 审中-公开
标题翻译：电动四轮驱动车辆和电动马达
公开(公告)号：JP2007267514A
公开(公告)日：2007-10-11
申请号：JP2006089838
申请日：2006-03-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TAWARA KAZUO , YOSHIDA KENICHI , KOBAYASHI KOJI , NISHIDATE KEISUKE , UMEZAKI YOSUKE
IPC分类号： H02K19/22 , B60K6/26 , B60K6/44 , B60K6/52 , B60K17/356 , B60L11/14 , B60W10/08 , B60W20/00 , H02K21/04
CPC分类号： Y02T10/623 , Y02T10/6243 , Y02T10/6265 , Y02T10/641 , Y02T10/7077
摘要： PROBLEM TO BE SOLVED: To reduce strange sound and vibration in an electric four-wheel drive vehicle by stopping the rotor of an electric motor as quickly as possible when a vehicle speed exceeds predetermined one and rotation is not transmitted between the wheel and the electric motor. SOLUTION: Since permanent magnets 130a and 130b are provided between the claw poles 111a, 111b, 112a, 112b of a claw pole rotor, the rotor trying to continue rotation with inertia when a vehicle speed exceeds predetermined one and rotation is not transmitted between the electric motor and the wheel, can be braked with magnetic force of the permanent magnets 130a and 130b. Consequently, strange sound or vibration is not generated even if rotation is not transmitted between the electric motor and the wheel. A big torque can be attained because a big amount of gap magnetic flux is obtained through saturation of the magnetic circuit in the claw poles 111a, 111b, 112a, 112b when the field current of the claw pole rotor is increased. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了通过在车速超过预定值时尽可能快地停止电动机的转子并且在车轮和车轮之间不传递旋转，来减少电动四轮驱动车辆中的奇怪的声音和振动电动机。解决方案：由于在爪极转子的爪极111a，111b，112a，112b的爪极111a，111b，112a，112b之间设置有永久磁铁130a，130b，所以当车速超过规定值时转子试图继续旋转而不转动，在电动机和车轮之间，可以用永久磁铁130a和130b的磁力制动。因此，即使在电动机和车轮之间不传递旋转，也不会产生奇怪的声音或振动。由于当爪极转子的励磁电流增加时通过爪电极111a，111b，112a，112b中的磁路的饱和获得大量的间隙磁通量，所以可以获得大的转矩。版权所有（C）2008，JPO＆INPIT

5. 发明专利

JP2002262530A ALTERNATOR FOR VEHICLE 失效
公开(公告)号：JP2002262530A
公开(公告)日：2002-09-13
申请号：JP2001053017
申请日：2001-02-27
申请人： HITACHI LTD
发明人： KANAZAWA HIROYUKI , MIYATA KENJI , KAWABATA KAORU , MAKI KOJI , TAWARA KAZUO , SASAKI SUSUMU , TAKAHATA RYOICHI
IPC分类号： H02K19/22 , H02K1/22 , H02K1/27 , H02K15/03 , H02K21/04
摘要： PROBLEM TO BE SOLVED: To provide an alternator for a vehicle which can improve an output by effectively utilizing a magnetic flux of a permanent magnet disposed between claw magnetic poles. SOLUTION: In the alternator for a vehicle, in which the permanent magnet 7 is disposed between a plurality of claw potions 5Aa, 5Ba provided to a pair of claw type magnetic poles 5A, 5B arranged opposed to each other, and a rotor 1 wound with a field coil 6 in the internal side of the diameter direction relative to the plurality of claw portions 5Aa, 5Ba and a stator 2 wound with a stator coil 15 at its stator iron core 14 are also provided. Moreover, the claw portions 5Aa, 5Ba of the rotor 1 are formed in a shape so as to be in contact with the entire surface of the magnetic poles of the permanent magnet 7.

6. 发明专利

JP2002252994A MOTOR CONTROLLING APPARATUS 审中-公开
公开(公告)号：JP2002252994A
公开(公告)日：2002-09-06
申请号：JP2001338847
申请日：2001-11-05
申请人： HITACHI LTD
发明人： NOTOHARA YASUO , KAWABATA YUKIO , TAWARA KAZUO , ISHII MAKOTO , TAKAKURA YUHACHI
IPC分类号： F25B1/00 , H02P6/06 , H02P27/06 , H02P5/41
摘要： PROBLEM TO BE SOLVED: To control the motor speed by using a single simple speed control circuit regardless of the size of a load. SOLUTION: The motor controlling apparatus comprises, a rectifying circuit and a smoothing circuit, a converter circuit having a chopper circuit for controlling a DC voltage by using a switching operation and an energy storage effect by an inductance, a motor driving apparatus having an inverter circuit connected to the output of the converter circuit, and a motor, a converter controlling circuit for controlling the switching operation of the chopper circuit, an inverter controlling circuit for controlling the switching operation of the inverter circuit and driving the motor, a speed detecting circuit for detecting a position of a rotor of the motor and calculating the speed, speed controlling circuit for inputting a calculated speed value and a speed instructing value and controlling the speed of the motor through the inverter controlling circuit, and a DC voltage controlling circuit for inputting an output signal from the speed controlling circuit and controlling the DC voltage through the converter controlling circuit based on the output signal.

7. 发明专利

JP2001238490A CONTROL UNIT FOR A PLURALITY OF MOTORS, POWER CONVERTER, INVERTER MODULE AND CONVERTER MODULE 失效
公开(公告)号：JP2001238490A
公开(公告)日：2001-08-31
申请号：JP2000048925
申请日：2000-02-21
申请人： HITACHI LTD
发明人： NOTOHARA YASUO , KAWABATA YUKIO , TAWARA KAZUO
IPC分类号： H02H7/122 , H02M7/48 , H02P5/00 , H02P7/67
摘要： PROBLEM TO BE SOLVED: To provide a motor control unit which connects a plurality of motor drive circuit with a power source circuit and controls effectively a plurality of motors, and enable power control and high efficiency operation of the motor control system as a whole by using communication means of network or the like. SOLUTION: A plurality of inventers 2, 4, 6, capable of rotational speed control of motors 3, 5, 7 are connected with a converter 1 capable of controlling a DC voltage, and the DC voltage is changed from a conduction ratio of each of the inverters, motor loads, etc. Communication means of a network or the like is installed for the converter, and the inverters, working electrical energy, input current, output torque, etc., are calculated, and controlling is done by a high order control unit, so that power control, failure diagnosis, etc., are enabled.

8. 发明专利

JP2001145382A MOTOR CONTROLLER 失效
公开(公告)号：JP2001145382A
公开(公告)日：2001-05-25
申请号：JP2000319607
申请日：2000-10-16
申请人： HITACHI LTD
发明人： NOTOHARA YASUO , FUTAMI MOTOO , TAWARA KAZUO
IPC分类号： H02M7/48 , H02P6/06 , H02P6/08
摘要： PROBLEM TO BE SOLVED: To prevent abrupt increase in direct-current voltage and suppress increase in direct-current voltage and degradation in power factor by stopping the switching operation of a booster chopper circuit. SOLUTION: The motor controller is provided with a rectifier circuit and a filter circuit that convert alternating-current power into direct currents, a power circuit comprising a booster circuit that utilizes switching operation and energy storing effect by an inductance to improve the power factor of power supply, a converter control means that turns supply currents into sine waves and controls the switching operation of the booster circuit so that the difference between the direct-current voltage and the commanded voltage is zeroed, a motor drive circuit formed by connecting an inverter and a motor with the output of the filter circuit, a position detection circuit that detects the magnetic pole position of the motor, an inverter controlling means that controls the inverter so that the difference between the speed of the motor and a commanded speed is zeroed, and a switching operation stopping means that temporarily stops the switching operation of the switching element according to the state of operation of the motor.

9. 发明专利

JP2000125599A AC GENERATOR AND VEHICLE USING IT 失效
公开(公告)号：JP2000125599A
公开(公告)日：2000-04-28
申请号：JP22825399
申请日：1999-08-12
申请人： HITACHI LTD
发明人： KANAZAWA HIROYUKI , TAWARA KAZUO , HONDA YOSHIAKI , TAKANO MASAMI , INNAMI TOSHIYUKI , SUZUKI ATSUSHI
IPC分类号： H02H7/06 , H02K9/19 , H02P9/14
摘要： PROBLEM TO BE SOLVED: To further improve the safety of an AC generator by preventing the temperature of the generator from rising by controlling the current generated from the generator in accordance with the temperature values detected by means of temperature detecting sensors which detect the temperature of a liquid coolant. SOLUTION: An AC generator 1 for vehicle is connected to a pulley 102 arranged on its rotating shaft and another pulley 31 arranged on the shaft of an engine 2 through a belt 32. In order to cool the generator 1, a liquid coolant pump 6 which is connected to the radiator 5 of an automobile for heat exchange through two radiator hoses 4 and circulates a liquid coolant is arranged on the outlet side of the radiator 5. In order to detect the temperature of the liquid coolant, in addition, an inlet-side liquid temperature detecting sensor 117 is provided on the inlet side of the hoses 4 and an outlet-side liquid temperature detecting sensor 118 is provided on the outlet side of the hoses 4. The values detected by means of the sensors 117 and 118 are inputted to the ECU 1000 of an engine controller and used for controlling the current generated from the generator 1. Therefore, the heating value of the generator 1 can be prevented from rising by controlling the current generated from the generator 1 upon detecting abnormality in the cooling system.

10. 发明专利

JP2000125513A AC GENERATOR 失效
公开(公告)号：JP2000125513A
公开(公告)日：2000-04-28
申请号：JP22825299
申请日：1999-08-12
申请人： HITACHI LTD
发明人： KANAZAWA HIROYUKI , TAWARA KAZUO , HONDA YOSHIAKI , TAKANO MASAMI , INNAMI TOSHIYUKI , SUZUKI ATSUSHI
IPC分类号： H02K9/19
摘要： PROBLEM TO BE SOLVED: To realize the reduction of electromagnetic sound and the cooling improvement of field winding and stator winding. SOLUTION: A liquid cooling system is adopted for a cooling means, and also a claw-shaped magnetic pole 108 and a field winding 107 of a rotor are molded with satisfactory heat conductive resin to make a well heat conductor 16, thus the rigidity of the rotor is enhanced, and the slot part of the stator core 105 and the end coil part as a whole are solidified with satisfactory heat conductive resin so as to raise the rigidity of the stator as a whole similarly to the rotor and reduce the generation of electromagnetic sound. Moreover, the heat of a heat generation source is conducted via the well heat conductive resin so as to improve cooling.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式