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81. 发明专利

JP2003189568A SYNCHRONOUS MOTOR, BLOWER, COMPRESSOR AND REFRIGERATION /AIR-CONDITIONING EQUIPMENT 审中-公开
公开(公告)号：JP2003189568A
公开(公告)日：2003-07-04
申请号：JP2001386210
申请日：2001-12-19
申请人： MITSUBISHI ELECTRIC CORP
发明人： TAKITA YOSHIO , KAWAGUCHI HITOSHI , YOSHINO ISATO
IPC分类号： H02K1/22 , H02K17/20 , H02K19/10 , H02K19/14
摘要： PROBLEM TO BE SOLVED: To solve the problem that generated magnetic flux must cross over a slit, flow of the magnetic flux is deteriorated, loss is increased and efficiency is decreased by a rotating position of a rotor, because a slit form of the conventional rotor is set to be symmetric to a q-axis which is the direction along which the magnetic is flux hard to flow. SOLUTION: At least a pair of slit parts is installed which is arranged in the rotor and forms a magnetic pole protrusion so as to obtain a d-axis and the q-axis. The d-axis is a direction along which the magnetic flux is easy to flow, and the q-axis is a direction along which the magnetic flux is hard to flow. Small reluctance parts where reluctance is small are disposed in the slit parts, thereby making the slit parts asymmetric to the q-axis. COPYRIGHT: (C)2003,JPO

82. 发明专利

JP2001186797A DRIVE CIRCUIT FOR SWITCHED RELUCTANCE MOTOR AND COMPRESSOR 失效
公开(公告)号：JP2001186797A
公开(公告)日：2001-07-06
申请号：JP36895099
申请日：1999-12-27
申请人： MITSUBISHI ELECTRIC CORP
发明人： KAWAGUCHI HITOSHI , TAKITA YOSHIO , YOSHINO ISATO
IPC分类号： F04B39/00 , H02P25/08 , H02P7/05
摘要： PROBLEM TO BE SOLVED: To obtain a drive circuit for SR(Switched Reluctance) motors that is capable of performing sensorless operation at low cost with reliability in connection with a detection circuit for the position of an SR motor. SOLUTION: The drive circuit is provided with a step function signal generating circuit, stator windings connected with a power supply, a switch to apply a voltage applied from the power supply to the stator windings and resistors, an inductance detection circuit for detecting variation in inductance encountered in the stator windings, a rotational position detection circuit that detects the positions of the rotor salient poles based on a detection signal from the inductance detection circuit and outputs a rotor salient pole position signal, and a control circuit that estimates the speed and the status of synchronization of the SR motor from variation in the inductance of the stator windings and drives the motor with stability.

83. 发明专利

JP2000228854A RELUCTANCE MOTOR AND BLOWER 失效
公开(公告)号：JP2000228854A
公开(公告)日：2000-08-15
申请号：JP2951799
申请日：1999-02-08
申请人： MITSUBISHI ELECTRIC CORP , MITSUBISHI ELECTRIC HOME APPL
发明人： YOSHINO ISATO , KAWAGUCHI HITOSHI , NAKASAKI OSAMU , OTAKA SHUICHI
IPC分类号： H02K23/40 , H02K27/00
摘要： PROBLEM TO BE SOLVED: To obtain a reluctance motor which eliminates a need of a stator winding, is made inexpensive and whose reliability is enhanced by a constitution containing a stator which is constituted of a magnetic body and which does not have a winding. SOLUTION: This reluctance motor is provided with a stator 1 which is constituted of a magnetic body and which does not have a winding. A rotor 3 to which an armature winding 4 is formed is installed on the inside side of the stator 1. In addition, the armature winding 4 is connected to a commutator 6 which is composed of a plurality of copper element pieces. Electric power is supplied by a brush 5 which is adjacent to the commutator 6. Then, in the armature winding 4, the magnetic pole of the rotor 3 is generated by an armature current which flows by the brush 5 and the commutator 6. The generated magnetic pole of the rotor 3 generates a reluctance torque so as to be magnetically balanced on the basis of the relationship between the stator 1 and a gap length, and the rotor is turned. As a result, the material cost and the working cost of a stator winding are reduced, this reluctance motor can be made inexpensive, the rotor is not stopped at to a torque change, and the reliability of the reluctance motor is enhanced.

84. 发明专利

JPH11262290A ROTOR POSITION DETECTING EQUIPMENT OF SENSORLESS SWITCHED RELUCTANCE MOTOR AND ITS METHOD 失效
公开(公告)号：JPH11262290A
公开(公告)日：1999-09-24
申请号：JP5839298
申请日：1998-03-10
申请人： MITSUBISHI ELECTRIC CORP
发明人： YOSHINO ISATO , KAWAGUCHI HITOSHI , TAKITA YOSHIO
IPC分类号： H02P25/08 , H02P7/05
摘要： PROBLEM TO BE SOLVED: To provide a position detecting circuit for enabling synchronous operation of a switched reluctance(SR) motor without a position detecting sensor, and its method. SOLUTION: A step function signal generating circuit 17 for generating a step function signal, a switch applying a step function voltage to a stator winding 3 and a resistor 13, a detection signal generating circuit 21 generating a timing signal for detection, an inductance detecting circuit 16 detecting a voltage or a current at the time of transient response, on the basis of the timing signal, which voltage or current is generated in the stator winding 3 and the resistor 13 by the step function voltage formed on the basis of the step function signal, and a rotating position detecting circuit 15 for detecting the position of a rotor salient-pole, on the basis of the detected voltage or the detected current detected by the inductance detecting circuit 16 and a voltage or a current, which have been determined previously, corresponding to the position of the rotor salient- pole are installed.

85. 发明专利

JP2003125567A ROTOR OF SYNCHRONOUS INDUCTION MOTOR, SYNCHRONOUS INDUCTION MOTOR, FAN MOTOR, COMPRESSOR, AIR CONDITIONER, AND REFRIGERATOR 审中-公开
公开(公告)号：JP2003125567A
公开(公告)日：2003-04-25
申请号：JP2001313517
申请日：2001-10-11
申请人： MITSUBISHI ELECTRIC CORP
发明人： TAKITA YOSHIO , KAWAGUCHI HITOSHI , YOSHINO ISATO
IPC分类号： F04B39/00 , F04B35/04 , F04C29/00 , F04D29/00 , H02K17/16 , H02K17/26 , H02K19/10 , H02K19/14
摘要： PROBLEM TO BE SOLVED: To solve the problem of a motor, having a rotor with slits, the difficulty of increasing revolution, as centrifugal force is applied to connection parts on both the ends of the slit and, if the thicknesses of the connection parts are increased in order to increase the revolution, of the characteristics of the motor deteriorating. SOLUTION: There are provided slots for generating induction torque and slits for generating reluctance torque. The slit is filled with filling material and at least one of a protrusion and a recess, which are formed so as to receive centrifugal force generated by the rotation of a rotor and makes the part of the rotor outside the slit and the slit-filling material protrude from the center of the rotor toward the outside.

86. 发明专利

JP2002064950A MOTOR, MANUFACTURING METHOD THEREFOR, AND ELECTRIC VACUUM CLEANER 失效
公开(公告)号：JP2002064950A
公开(公告)日：2002-02-28
申请号：JP2000248515
申请日：2000-08-18
申请人： MITSUBISHI ELECTRIC CORP , MITSUBISHI ELECTRIC HOME APPL
发明人： YOSHINO ISATO , KAWAGUCHI HITOSHI , TAKAHASHI YUJI
IPC分类号： A47L9/00 , H02K1/17 , H02K1/26 , H02K5/04 , H02K15/02 , H02K23/04
摘要： PROBLEM TO BE SOLVED: To provide a permanent magnet-field dc motor that is inexpensive and efficient. SOLUTION: The permanent magnet-field dc motor comprises a plurality of stator cores arranged so that the stator cores are adjacent to one another in the circumferential direction and form a circle, a plurality of field magnets secured inside the stator cores opposite to one another so that the substantially center position of the width thereof in the circumferential direction is positioned between the adjacent stator cores, and a rotor placed inside the plurality of the field magnets with a gap in-between and provided between slots with armature winding.

87. 发明专利

JP2002034182A MOTOR ROTOR AND MANUFACTURING METHOD THEREFOR, INDUCTION MOTOR, AND SYNCHRONOUS MOTOR 失效
公开(公告)号：JP2002034182A
公开(公告)日：2002-01-31
申请号：JP2000215387
申请日：2000-07-17
申请人： MITSUBISHI ELECTRIC CORP
发明人： KAWAGUCHI HITOSHI , TAKITA YOSHIO , BABA KAZUHIKO , MATSUOKA ATSUSHI , YOSHINO ISATO , TSUTSUMI TAKAHIRO
IPC分类号： H02K1/02 , H02K1/22 , H02K1/27 , H02K1/30 , H02K15/02 , H02K17/16 , H02K19/10 , H02K19/14
摘要： PROBLEM TO BE SOLVED: To provide a motor rotor capable of attaining easy manufacturing, high efficiency, and less noise. SOLUTION: This rotor is formed into an integrated structure by sintering a material in which a highly magnetic metal material and a highly conductive metal material are mixed, so as to have higher metallic composition percentage of high conductivity as it moves closer to an outer-periphery surface. For more appropriate distribution of magnetic reluctance on the rotor, the rotor is formed so as to have various types of grooves, slits, permanent magnets, and inner and outer double-layer structure.

88. 发明专利

JP2001339974A CONTROL DEVICE FOR PERMANENT MAGNET FIELD DC MOTOR AND VACUUM CLEANER 失效
公开(公告)号：JP2001339974A
公开(公告)日：2001-12-07
申请号：JP2000158402
申请日：2000-05-29
申请人： MITSUBISHI ELECTRIC CORP , MITSUBISHI ELECTRIC HOME APPL
发明人： YOSHINO ISATO , KAWAGUCHI HITOSHI , TAKAHASHI YUJI , IWAHARA AKIHIRO
IPC分类号： A47L9/00 , A47L9/28 , H02P7/29 , H02P5/17
摘要： PROBLEM TO BE SOLVED: To provide a control device for a permanent magnet field DC motor with high efficiency at a low cost. SOLUTION: The permanent magnet field DC motor has field magnets which are fixed inside a stator core facing each other, a rotor which is disposed inside these field magnets and provided with armature windings in slots, a commutator which is connected to the armature windings and brushes which supply power by contacting to this commutator. In the permanent magnet field DC motor, a rectifier which supplies the permanent magnet field DC motor power which rectifies an AC power source by a rectifier circuit, a switch which is serially connected with the DC motor, a voltage detector which detects the voltage of the power source, and a controller which controls the power source supplied to the DC motor by controlling the switch responding to the detected value by the voltage detector are provided.

89. 发明专利

JPH10201293A CONTROL DEVICE FOR SINGLE-PHASE MOTOR 失效
公开(公告)号：JPH10201293A
公开(公告)日：1998-07-31
申请号：JP83997
申请日：1997-01-07
申请人： MITSUBISHI ELECTRIC CORP
发明人： YOSHINO ISATO , KAWAKUBO MAMORU
IPC分类号： H02P27/02 , H02P21/22 , H02P21/34 , H02P23/00 , H02P25/04 , H02P29/00 , H02P7/36 , H02P5/00
摘要： PROBLEM TO BE SOLVED: To provide a control device for a single-phase motor which protects a control element even when an AC power source is erroneously connected to the single-phase motor. SOLUTION: A switching circuit 3 connected, in series, between an AC power source 1 and a single-phase 2 motor, fly-wheel circuits 4 connected, in parallel, between terminals of the single-phase motor 2, a switching drive control circuit 9, a fly-wheel control circuit 10, a switching power source circuit 11, and a fly-wheel power source circuit 12 are provided. A connection position between the AC power source 1 and the single-phase motor 2 is detected, and if they are accidentally connected inversely, the switching circuit 3 is so controlled as to be off.

90. 发明专利

JP2008187840A COMMUTATOR MOTOR, AND VACUUM CLEANER 审中-公开
公开(公告)号：JP2008187840A
公开(公告)日：2008-08-14
申请号：JP2007020242
申请日：2007-01-31
申请人： MITSUBISHI ELECTRIC CORP
发明人： YOSHINO ISATO , TAKITA YOSHIO , KIMURA YASUKI , MATSUI AKIO
IPC分类号： H02K1/18 , H02K1/02 , H02K15/02 , H02K23/40
摘要： PROBLEM TO BE SOLVED: To provide a high-efficiency and inexpensive commutator motor. SOLUTION: This commutator motor 100 includes: a field magnet 40 of which a field core 20 is furnished with a field winding 3; an armature 30, disposed inside the field core 20, of which an armature winding 6 is provided in the slots 5a of an armature core 5; a commutator connected with the armature winding 6; a brush for supplying power in contact with the commutator; and an output shaft 7 in the center of the armature core 5. The field core 20 is divided into a field teeth portion 1 and a filed yoke portion 2. The field teeth portion 1 and the armature core 5 are made of the same material, while the field yoke portion 2 is made of a material different from that of the field teeth portion 1 and the armature core 5. COPYRIGHT: (C)2008,JPO&INPIT

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