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1. 发明专利

JP2001339919A PERMANENT-MAGNET RELUCTANCE MOTOR 失效
公开(公告)号：JP2001339919A
公开(公告)日：2001-12-07
申请号：JP2000154241
申请日：2000-05-25
申请人： TOSHIBA CORP , TOSHIBA IND PRODUCTS MFG CORP
发明人： TAKAHASHI NORIO , HASHIBA YUTAKA , SAKAI KAZUTO , SHIN MASANORI , KAZAO YUKIHIKO , ARAKI TAKASHI , MATSUBARA MASAKATSU , HIRANO TAKAO
IPC分类号： H02K1/22 , H02K1/27 , H02K19/10 , H02K21/16
摘要： PROBLEM TO BE SOLVED: To facilitate insertion of a permanent magnet for assembling a permanent-magnet reluctance motor, to enable mechanization in manufacturing the permanent-magnet reluctance motor and to provide a way for obtaining a high output, high efficiency, high speed and high reliability of the motor eliminating scattering of the broken permanent magnet fragments and damage to the rotor in the permanent-magnet reluctance motor even if the adhesive for fixing the motor is deteriorated. SOLUTION: A permanent-magnet positioning convex 12 is formed at a permanent-magnet embedding hole 5 to hold the permanent magnet and, by optimizing the shape of thin-wall parts 18, 19 in a rotor iron core 4, leak of a magnetic flux occurring from the permanent magnet is suppressed and stiffness of the thin-wall parts where the stress is concentrated is secured.

2. 发明专利

JP2001124076A THRUST MAGNETIC BEARING DEVICE 失效
公开(公告)号：JP2001124076A
公开(公告)日：2001-05-08
申请号：JP29998499
申请日：1999-10-21
申请人： TOSHIBA CORP
发明人： HASHIBA YUTAKA
IPC分类号： H02K7/09 , F16C32/04
摘要： PROBLEM TO BE SOLVED: To save the electric power of a thrust magnetic bearing device, and to reduce the capacity and the size of a power amplifier. SOLUTION: Filter circuits 15-a, 15-b for removing PWM carrier frequency component are mounted on the output parts of PWM power amplifiers 14-a, 14-b, and the current is supplied to thrust electromagnets 3-a, 3-b through the filter circuits to reduce the carrier frequency component of a power amplifier included in the electric current flowing in the thrust electromagnets, and reduce the eddy current flowing to electromagnetic cores 4-a, 4-b. As a result, the power used in the device can be saved, the heat produced by the thrust electromagnets can be reduced, which simplifies a cooling mechanism, and reduces an amount of the electric current to be supplied to the electromagnet thereby reducing the capacity, the size and the cost of the power amplifier.

3. 发明专利

JP2000278898A PERMANENT MAGNET ROTARY ELECTRIC MACHINE 失效
公开(公告)号：JP2000278898A
公开(公告)日：2000-10-06
申请号：JP8033999
申请日：1999-03-24
申请人： TOSHIBA CORP
发明人： HASHIBA YUTAKA , TAKAHASHI NORIO , FUSE TOSHIAKI , MIURA HIROTSUGU , SHIN MASANORI
IPC分类号： H02K1/28 , H02K1/27 , H02K15/16
摘要： PROBLEM TO BE SOLVED: To acquire a higher safety limit velocity to assure a rotor that can rotate at a higher speed. SOLUTION: A rotor 5 is loaded internally to rotate to the shaft center of stator 1, its rotor 5 has a structure that a plurality of permanent magnets 11 for field are arranged in the circumference direction, and a holding ring 13 is arranged on the surface of these permanent magnets 11. Moreover, the holding ring 13 is divided in the axial direction and the permanent magnet 11 is fixed to the internal circumference surface of the divided holding rings 13. Meanwhile, the divided holding rings 13 are coupled with the welding, and the holding ring 13 and shaft 9 are also coupled with the welding to provide the integrally coupled structure for the shaft 9 and holding ring 13.

4. 发明专利

JP2000245123A PERMANENT MAGNET RELUCTANCE ROTATING MACHINE 失效
公开(公告)号：JP2000245123A
公开(公告)日：2000-09-08
申请号：JP4386999
申请日：1999-02-22
申请人： TOSHIBA CORP
发明人： TAKAHASHI NORIO , HASHIBA YUTAKA , SHIN MASANORI , SAKAI KAZUTO , TSUTSUI KOJI
IPC分类号： H02K19/10 , H02K1/27 , H02K21/04
摘要： PROBLEM TO BE SOLVED: To ensure higher speed rotation by suppressing a stress value generated on a rotor core. SOLUTION: A rotor 5, whose permanent magnet 13 is mounted in a rotor core 11, is rotatably loaded in a stator 1, is formed so that a pole part 15 constituted of a pair of permanent magnets 13 facing each other in the rotor core 11, a pole-to-pole section 19 having a nonmagnetic part 17 formed between the pole parts 15 are disposed on a circumference alternately, and the permanent magnets 13 of the pole parts 15 which face each other are divided into several portions in the polarizing and parallel directions to be mounted in magnet mounting holes 21, 23 in the rotor core 11. Thus the mass of the permanent magnet 13 during high-speed rotation is reduced.

5. 发明专利

JPH0968221A MAGNETIC BEARING DEVICE 失效
公开(公告)号：JPH0968221A
公开(公告)日：1997-03-11
申请号：JP22190895
申请日：1995-08-30
申请人： TOSHIBA CORP
发明人： HASHIBA YUTAKA , KATSURAYAMA NORIYUKI
IPC分类号： F16C32/04
摘要： PROBLEM TO BE SOLVED: To ensure actuation of a magnetic bearing by eliminating, before the next actuation, remaining magnetic flux which is produced in electromagnets when the action of the magnetic bearing is stopped. SOLUTION: A thrust disk 13 made of a ferromagnetic substance is secured to a rotating shaft 12, and electromagnets 14a, 14b are placed in opposite positions sandwiching the thrust disk 13. The axial position of the rotating shaft 12 is detected by a displacement sensor 15, and a position detection signal is imparted to a control device 16. The control device 16 controls the attracting forces of the electromagnets 14a, 14b according to the displacement of the thrust disk 13 to hold the thrust disk 13 in a predetermined position. A demagnetizing device 22 can be connected to the electromagnets 14a, 14b via changeover switches 18a, 18b, and performs demagnetizing action by supplying a demagnetizing current which undergoes damped oscillation when control of a magnetic bearing is stopped, for demagnetizing magnetic flux remaining in the electromagnets 14a, 14b.

6. 发明专利

JPH0886314A MAGNETIC BEARING DEVICE 失效
公开(公告)号：JPH0886314A
公开(公告)日：1996-04-02
申请号：JP22141494
申请日：1994-09-16
申请人： TOSHIBA CORP
发明人： HASHIBA YUTAKA , KAZAO YUKIHIKO , TAKAHASHI NORIO , MATSUO KENICHI
IPC分类号： F16C32/04
摘要： PURPOSE: To provide a magnetic bearing device which can improve setting freedom of a value of a dc bias current and reduce capacity of a current amplifying circuit. CONSTITUTION: A signal is output from a control circuit 14. A code of the signal is determined by a determining circuit 17. When it is positive, the signal is output to a signal inversion circuit 15, that is, to an anti-reference side. When it is negative, the signal is output to a current amplifying circuit 16-1, that is, the reference direction circuit side. At the reference direction circuit side, a bias signal is added to the output signal of the determining circuit 17 as it is. It is amplified by the current amplifying circuit 16-1, and supplied to an electromagnet 3-1 as a current signal. At the anti-reference direction side, an output signal from the determining circuit 17 is inverted by a signal inversion circuit. The bias signal is added thereto. It is amplified by a current amplifying circuit 16-2, and supplied to an electromagnet 3-2 as a current signal.

7. 发明专利

JPH06311699A MAGNETIC BEARING-MOUNTED ROTARY ELECTRIC MACHINE 失效
公开(公告)号：JPH06311699A
公开(公告)日：1994-11-04
申请号：JP28714493
申请日：1993-11-17
申请人： TOSHIBA CORP
发明人： HASHIBA YUTAKA , KANZAKI HIDETOSHI , HIROI KATSUYUKI , YAMAUCHI AKIRA
IPC分类号： H02K7/09 , H02K11/00
摘要： PURPOSE:To stably stop a rotary electric machine by a method wherein, when the axial deflection amount of the rotary electric machine becomes larger than a threshold value, a switch operating device opens a switch, a current flowing to the rotary electric machine, a radial magnetic bearing and a thrust magnetic bearing is cut off and the rotary electric machine is touched down. CONSTITUTION:While a motor 2 is being operated, a shaft 1 is supported in a noncontact manner so as to be freely rotatable by radial magnetic bearings 4, 4 at both end parts and by a thrust magnetic bearing 6. The displacement of the magnetic bearings 4, 4, 6 is detected by sensors 5, 5, 7. When the output of the sensors 5, 5, 7 exceeds a threshold value by an external force or for some reason, a control device 8 opens a switch S1 via a switch operating device 10, the exciting current of the magnetic bearings 4, 4, 6 is cut off, a switch S2 is opened, and the driving current of the motor 2 is cut off. The shaft 1 is supported by touchdown bearings 9 at both ends and stopped. Thereby, it is possible to prevent the shaft from being damaged when it comes into contact with a fixation-side member.

8. 发明专利

JPS6235237A EXCITOR FOR SLACK DIAGNOSIS DEVICE 失效
公开(公告)号：JPS6235237A
公开(公告)日：1987-02-16
申请号：JP17522985
申请日：1985-08-09
申请人： TOSHIBA CORP
发明人： WATANABE SHUNZO , HASHIBA YUTAKA
IPC分类号： B06B1/04 , G01M7/00 , G01M7/02
摘要： PURPOSE:To perform a slack diagnosis correctly by providing the movable iron core to be driven with attraction with being supported to a guide sleeve by the excitation of the electromagnet inside a housing and by transmitting the impact force onto the collision plate that one end of the iron core collides with by the attraction driving of this iron core to the body to be tested by a transmission member via a sensor. CONSTITUTION:In case of an electromagnet 4 being excited by impressing DC voltage on a coil 3 a movable iron core 5 is attracted by the magnetic force thereof in the arrow mark direction A against the energizing force of a coil spring 11. By this attraction motion the lower end of the anvil 6 fitted to the movable iron core 5 collides with a collision plate 14 and the vibration of this collision plate 14 is transmitted to a rod 19 to excite the body to be tested. In this case, the vibration, etc. is attenuated by a spring member 15 in order that the vibration of the body to be tested is not becoming the disturbance at the acceleration sensor 18 measuring time by transmitting the energy by the collision of the anvil 6 with the collision plate 14 to the rod 19 as much as possible and by attenuating the vibration of the collision plate 14 quickly.

9. 发明专利

JPS61170660A OSCILLATION MEASURING INSTRUMENT 失效
公开(公告)号：JPS61170660A
公开(公告)日：1986-08-01
申请号：JP1104185
申请日：1985-01-25
申请人： TOSHIBA CORP
发明人： UTO YUETSU , HASHIBA YUTAKA
IPC分类号： G01H11/00 , G01R11/00
摘要： PURPOSE:To measure the oscillation of a high electric potential part stably by transmitting a signal and supplying the electric power by using optical fibers. CONSTITUTION:Light is sent to the optical fiber 51 from a light source 8 continuously and converted into the electric power by a solar cell 9 and further, stabilized by a voltage regulator 10 to supply the DC electric power to an amplifier 2 or the like. Then, when the high electric potential part where an oscillation sensor 1 is fitted oscillates, an electrical signal of the voltage in proportion to its oscillation level is generated on the oscillation sensor 1. This electrical signal is adjusted to the prescribed voltage with the amplifier 2, A/D converted with an A/D converter 3, E/O converted with an electro/optic converter 4 and transmitted to a photo/electric converter 6 by the optical fiber 5. This is converted inversely with the photo/electric converter 6 and a D/A converter 7 to detect the oscillation of the high electric potential.

10. 发明专利

JPS59191451A Air gap monitor of rotary electric machine 失效
标题翻译：旋转电机气隙监测仪
公开(公告)号：JPS59191451A
公开(公告)日：1984-10-30
申请号：JP6292883
申请日：1983-04-12
申请人： Toshiba Corp
发明人： UTOU HIROETSU , HASHIBA YUTAKA
IPC分类号： H02K11/00
CPC分类号： H02K11/20 , H02K11/35
摘要： PURPOSE:To enhance the reliability of a rotary electric machine by detecting an air gap length via a light, thereby eliminating the influence of an electromagnetic induction thereto. CONSTITUTION:When a rotor is rotated, a light from a light source 4 is incident to an optical fiber 5a, and formed in a parallel beam by a lens system 6. A light passed through an air gap is converted via a photoelectric converter 8a through a photoreceiving plate 7a and optical fiber group 5b into an electric signal, further converted via a counter 9a to a signal proportional to the air gap, and fed to the minimum value holder 10a. The air gap is detected similarly at the position displaced at 90 deg. in a circumferential direction of a rotary electric machine. An arithmetic unit 13 obtains the variation in the maximum air gap and its direction, which are displayed on a display unit 14. When the variation in the maximum air gap becomes the prescribed value or higher, an alarm is generated.
摘要翻译：目的：通过经由光检测气隙长度来提高旋转电机的可靠性，从而消除电磁感应的影响。构成：当转子旋转时，来自光源4的光入射到光纤5a，并由透镜系统6以平行光束形成。通过气隙的光经由光电转换器8a通过光接收板7a和光纤组5b转换成电信号，经由计数器9a进一步转换成与气隙成比例的信号，并馈送到最小值保持器10a。在以90度位移的位置处类似地检测气隙。在旋转电机的圆周方向上。算术单元13获得显示在显示单元14上的最大气隙及其方向的变化。当最大气隙的变化达到规定值以上时，产生报警。

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