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1. 发明专利

JP2580804B2 失效
公开(公告)号：JP2580804B2
公开(公告)日：1997-02-12
申请号：JP28403489
申请日：1989-10-31
申请人： FUJI ELECTRIC CO LTD
发明人： KOBAYASHI SHINICHI , HOSEN TOORU , SUZUKI TATATOMI , TAKUBO HIROSHI
IPC分类号： H01L25/07 , H01L25/18 , H02M1/00 , H02M1/08 , H02M7/537

2. 发明专利

JPS63171194A COMMERCIAL CHANGE-OVER CONTROLLER 失效
公开(公告)号：JPS63171194A
公开(公告)日：1988-07-14
申请号：JP31337286
申请日：1986-12-29
申请人： FUJI ELECTRIC CO LTD
发明人： YANASE TAKAO , SUZUKI TATATOMI
IPC分类号： H02P27/06
摘要： PURPOSE:To prevent excess current from being generated and shorten time necessary for change-over action, by setting frequency at the time of starting an inverter, to be the same frequency as that of an AC power source before it is switched to the inverter side. CONSTITUTION:When a commercial power source is switched to inverter operation, then a switch 42 is turned ON from OFF some time later after a switch 41 is turned OFF. In this case, a PWM inverter 10 is not yet operated, and current does not flow to an induction machine 12. Then, on a frequency setting unit 1 to which the output frequency of the PWM inverter 10 is applied, the value of the same frequency as that of the commercial power source is set. The amplitude of the output signal of a magnetic flux amplitude arithmetic circuit 2 is set to be zero, and voltage at the time of starting is started from zero. As a result, excess current is prevented from being generated at the time of starting, and a time required for change-over to the inverter from the commercial power source is shortened.

3. 发明专利

JPH04222470A CONTROLLING CIRCUIT FOR PULSE WIDTH MODULATION-CONTROLLED INVERTER 失效
公开(公告)号：JPH04222470A
公开(公告)日：1992-08-12
申请号：JP40530590
申请日：1990-12-25
申请人： FUJI ELECTRIC CO LTD
发明人： SUZUKI TATATOMI
IPC分类号： H02M7/5387 , H02P21/00 , H02P21/04 , H02P21/05 , H02P21/14 , H02P23/03 , H02P23/04 , H02P23/14 , H02P27/04 , H02P27/08
摘要： PURPOSE:To eliminate an AC voltage detecting device by simulating the AC output voltage by a combination of the voltage at the DC side and an actuating signal of an upper semiconductor switch element or lower semiconductor switch element. CONSTITUTION:In a power converting device in which a magnetic flux is controlled by pulse width modulation control, the AC output voltage is required to be detected in view of control. Then, the titled circuit is so configured that a simulation value of the AC output voltage of the power converting device may be detected by a combination of an actuating signal of a semiconductor switch element of an upper arm and the voltage at the DC side when current flows in the load direction from a bridge connection circuit of the semiconductor switch element which constitutes the power converting device and the simulation value may be detected by a combination of an actuating signal of a semiconductor switch element of a lower arm and the voltage at the DC side when current flows in the reverse direction.

4. 发明专利

JPS6243915A OVERVOLTAGE SUPPRESSION CIRCUIT FOR POWER TRANSISTOR 失效
公开(公告)号：JPS6243915A
公开(公告)日：1987-02-25
申请号：JP18312085
申请日：1985-08-22
申请人： FUJI ELECTRIC CO LTD
发明人： TOMITA HIROO , SUZUKI TATATOMI
IPC分类号： H03K17/16 , H03K17/60
摘要： PURPOSE:To miniaturize the circuit by connecting a series circuit composing of a resistor and a capacitor between a collector and a base of a power transistor (TR) so as to allow the power TR to process the energy stored in a circuit inductance at switch-off of the power TR. CONSTITUTION:The series circuit composing of a resistor 5 and a capacitor 6 is connected between the collector and base of the power TR 4. In applying a reverse bias to turn off the TR 4, a reverse bias current flows, the TR 4 starts having gradually a voltage, a part of a load current flows to the series circuit composing of the resistor 5 and the capacitor 6 to charge the capacitor 6. When the voltage C across the capacitor 6 reaches a power voltage E, the energy stored in the inductance L is discharged and consumed by a power loss of (1-1/hFE)IX(VCE-E), where VCE is the capacitor-emitter voltage of the TR and E is the power supply voltage.

5. 发明专利

JPS5716584A STARTING METHOD AND DEVICE FOR INDUCTION MOTOR 失效
公开(公告)号：JPS5716584A
公开(公告)日：1982-01-28
申请号：JP9019480
申请日：1980-07-02
申请人： FUJI ELECTRIC CO LTD
发明人： SUZUKI TATATOMI
IPC分类号： H02P1/26
摘要： PURPOSE:To abruptly rise the speed of an induction motor at the starting time by applying an alternating current having relatively high voltage and frequency to the motor during a short time after the starting. CONSTITUTION:When switches 7a, 7b for instructing start are closed, the set voltage of a frequency setting unit 6 is applied to an acceleration or deceleration regulator 8, and the output voltage from the regulator becomes linearly from zero volt to increased voltage. When the switch 7b is, on the other hand, closed, a signal 28 is applied from a differentiating circuit 11 to an adding point 9. Since a high voltage is applied to a voltage regulator 4 and a voltage-to-frequency converter 5 by the output of the circuit 11 after starting in this manner, the voltage and frequency of the alternating current supplied to an induction motor 1 are enhanced, and the rise of the speed of the motor can be abrupt.

6. 发明专利

JPS54145914A Speed controller for 3-phase induction motor 失效
标题翻译： 33相感应电机的速度控制器
公开(公告)号：JPS54145914A
公开(公告)日：1979-11-14
申请号：JP5485878
申请日：1978-05-09
申请人： Fuji Electric Co Ltd
发明人： SUZUKI TATATOMI
IPC分类号： H02P3/20 , H02P27/02
摘要： PURPOSE: To prevent the accidental reversion by means of an accidental reversion preventive circuit formed by adding a speed level detector to an adjustor.
CONSTITUTION: A speed level detector 6 is added to the conventional unit to form a mulfunctioning preventive circuit 10 together with a speed adjustor 1. With such an arrangement, accidental reversion can by prevented in a speed controller of a 3-phase induction motor employing reverse phase braking.
COPYRIGHT: (C)1979,JPO&Japio
摘要翻译：目的：通过将调速器加上速度检测器形成的意外反转防止电路来防止意外返回。构成：向常规单元添加速度电平检测器6，与速度调节器1一起形成防结霜保护电路10.通过这种布置，可以通过使用反向的三相感应电动机的速度控制器来防止意外的反转相制动。

7. 发明专利

JPS5491709A SPEED CONTROLLER OF WOUND ROTOR TYPE INDUCTION MOTOR 失效
公开(公告)号：JPS5491709A
公开(公告)日：1979-07-20
申请号：JP16023277
申请日：1977-12-28
申请人： FUJI ELECTRIC CO LTD
发明人： SUZUKI TATATOMI
IPC分类号： H02P27/02 , H02P23/07 , H02P23/16
摘要： PURPOSE:To suppress a pulsation of a motor torque at a time of changing over secondary resistances together with to device increasing a life of a secondary resistance change over switch by decreasing a current in case of switching a secondary resistance change over switch. CONSTITUTION:A speed instruction is given by a speed establisher 6 then a speed regulator 7 is operated and a secondary resistance change over instruction device 13 makes ''on'' ''off'' switching secondary resistance change over switches MC1-MC4 adequately so as to be a secondary resistance value corresponding with a number of revolution detected by a tacho-detecting-generator 5 so that a real number of revolution becomes to be stable at an established speed. In this case a switching instruction of a secondary resistance change over switch and an operation signal of each secondary switch auxilialy contact are entered into operation detector 12 and through an OR element 14 a signal is transmitted to a primary current decreasing transistor 10 catching an instant when shifting to either open or closed whenever any secondary switch is operated. When this transistor 10 becomes conductive, an instruction to decrease a current is given to a current regulator 8 from a decreased current establisher 11. In this manner a secondary current is decreased at a switch operating time of a secondary resistance change over switch.

8. 发明专利

JPS5339423A OPERATING INVERTER MOTOR 失效
公开(公告)号：JPS5339423A
公开(公告)日：1978-04-11
申请号：JP11425276
申请日：1976-09-22
申请人： FUJI ELECTRIC CO LTD
发明人： MAEDA EIJI , SUZUKI TATATOMI
IPC分类号： H02P1/26 , H02M7/515 , H02P3/18 , H02P27/06
摘要： PURPOSE:To promote a shortening of the dead time for switching to reverse running with anamalous rise suppressed as well of the voltage caused by a charge when restarting the inverter, by enabling an operation of the inverter stopped when a voltage polarity of commutation condenser is initial charge voltage polarity.

9. 发明专利

JPH01274691A SPINNING MACHINE DRIVING GEAR AND OPERATING METHOD FOR SPINNING MACHINE 失效
公开(公告)号：JPH01274691A
公开(公告)日：1989-11-02
申请号：JP10507788
申请日：1988-04-26
申请人： OMIKENSHI KK , FUJI ELECTRIC CO LTD
发明人： SASAKI MASAAKI , SUZUKI TATATOMI , YOSHIDA MASAKAZU , SHIBUYA YASUO
IPC分类号： D01H1/34 , H02P27/06
摘要： PURPOSE:To keep the quality of spun threads to be of a high level and improve the efficiency of operation, by operating a motor with an inverter at the time of acceleration or deceleration, and by operating the motor with a switched commercial power source at the time of the maximum speed operation of uniform speed operation. CONSTITUTION:According to operation command 4, low speed command 5, medium speed command 6, and high speed command 7, an inverter is started, and accelerated. After the high speed command 7 is applied to, it is discriminated that a motor starts high speed operation with a confirmed time, and the inverter is switched to a commercial power source. Besides, the high speed command 7 is turned OFF and then, it is discriminated that inverter operation is needed, and the commercial power source operation is switched to the inverter operation. In this manner, the inverter is used at the only time of requiring it, and by connecting the motor directly to the normal power source, the quality of spun threads is kept to be of a high level, and a spinning machine is driven most economically.

10. 发明专利

JPH01141368A INSULATION TYPE VOLTAGE DETECTING CIRCUIT 失效
公开(公告)号：JPH01141368A
公开(公告)日：1989-06-02
申请号：JP29905687
申请日：1987-11-27
申请人： FUJI ELECTRIC CO LTD
发明人： MIYAGISHI TORU , SUZUKI TATATOMI
IPC分类号： G01R19/18
摘要： PURPOSE:To reduce an offset voltage and a ripple voltage included in the output voltage of an insulation type voltage detecting circuit by using single phase bridge circuits of diode as switching elements to make and break primary and secondary circuits of an insulating transformer. CONSTITUTION:Diode switches 13, 14, 16 and 17 provided in the primary and the secondary circuits repeat on and off operation alternately by a square wave AC signal supplied from an oscillation circuit 9. So, if the voltage to be detected is inputted to input terminals 2, the voltage is alternately impressed to an upper side winding and a lower side winding from the center tap of the primary winding, and accordingly the core of the insulating transformer 5 is energized by a magnetomotive force alternately produced in positive and negative direction. Since the voltage induced in the secondary winding on the insulating transformer 5 is synchronously rectified by the diode switches in the secondary circuit which are repeating on and off operation alternately, the voltage proportional to the input voltage and also insulated from the input circuit can be picked up from the output terminals 8.

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