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1. 发明专利

JPH0830321A CONTROL PANEL WITH HELP FUNCTION 失效
公开(公告)号：JPH0830321A
公开(公告)日：1996-02-02
申请号：JP16825194
申请日：1994-07-20
申请人： HITACHI LTD , HITACHI KEIYO ENG
发明人： IBORI SATOSHI , TOKASHIKI MUTSUO , BABA SHIGEYUKI , TAKADA NAOKI , ITO KAZUHIRO , SHIMOZU TADAO , HIROTA MASAYUKI
IPC分类号： G05B23/02
摘要： PURPOSE:To provide a control panel for equipment such as an inverter, with which explanation information required for operations can be sufficiently provided, to be sufficiently miniaturized while improving convenience. CONSTITUTION:When operation conditions or the like are displayed on a display screen 3 by an operation button 4 of a control panel 1, corresponding to this display, an indication expressing any prescribed page in a manual is simultaneously displayed at a line F of this display screen 3. When a selection setting operation is performed by the operating button 4 of the control panel 1, corresponding to the operation conditions set by this operation, the number of a page describing information such as the meaning of that setting or the method effective for the operation in the manual is automatically displayed on the line F of the display screen 3 so that the manual can be easily and simply referred to and effectively utilized as well. As a result, even a biginner can always perform the exact operation in a short time, and the convenience of the inverter can be sufficiently improved.

2. 发明专利

JPH0440960B2 失效
公开(公告)号：JPH0440960B2
公开(公告)日：1992-07-06
申请号：JP21972486
申请日：1986-09-19
申请人： HITACHI LTD
发明人： IBORI SATOSHI , SHIMONABE HIDEYUKI , HATSUTORI MOTONOBU , SHIMOZU TADAO , MUTO NOBUYOSHI
IPC分类号： H02P27/06

3. 发明专利

JPS62170795A DRIVING APPARATUS FOR SCREW TYPE VACUUM PUMP 失效
公开(公告)号：JPS62170795A
公开(公告)日：1987-07-27
申请号：JP1002986
申请日：1986-01-22
申请人： HITACHI LTD
发明人： YASUHARA TAKASHI , SHIMOZU TADAO
IPC分类号： F04C25/02 , F04C28/08
摘要： PURPOSE:To reduce the size of a motor by controlling the output voltage from a power converting means to a target value to be determined on the basis of a specific formula thereby outputting such frequency and voltage as suitable for the desired torque of a screw type vacuum pump. CONSTITUTION:When the output frequency under operation with a rated speed Nc is Fc, the necessary rated torque under a rated speed is Tc, the voltage necessary for outputting a rated torque under a rated speed is Vc and the necessary torque of a power converting means 1 under an output frequency F is T, the output voltage V of the power converting means 1 for controlling a drive motor 4 of a screw type vacuum pump 7 at the output frequency F is controlled to a target value represented by formula I. Since the output frequency F and the output voltage V suitable for the necessary torque of the screw type vacuum pump 7 can be employed, a larger motor than a really needed one is not required.

4. 发明专利

JPS62147991A CONTROLLER FOR AC MOTOR 失效
公开(公告)号：JPS62147991A
公开(公告)日：1987-07-01
申请号：JP28554685
申请日：1985-12-20
申请人： HITACHI LTD , HITACHI KEIYO ENG
发明人： SHIMOZU TADAO , IBORI SATOSHI , TAKANO TSUTOMU
IPC分类号： H02P21/05 , H02P21/22 , H02P23/00 , H02P23/04 , H02P23/07 , H02P25/04 , H02P27/06
摘要： PURPOSE:To reduce the current capacity of a chopper and the capacity of a filter condenser respectively and miniaturize a device lightening the weight, by working the differential value of DC waveform positively to the output command value of the chopper. CONSTITUTION:By a differential value output means 15, the output of a DC current transformer 17 is received, and the differential value output of this output is generated. Voltage command COV is added to the output of the differential value output means 15 by an arithmetic operation means 16. By this organization, when direct current is increased, then the output of the arithmetic operation means 16 is worked so that the output voltage of a chopper 4 may be reduced, and when current is reduced, then the output is worked so that the output voltage of the chopper 4 may be increased.

5. 发明专利

JPS61288787A OPERATING METHOD FOR INDUCTION MOTOR 失效
公开(公告)号：JPS61288787A
公开(公告)日：1986-12-18
申请号：JP12982785
申请日：1985-06-17
申请人： HITACHI LTD , HITACHI KEIYO ENG
发明人： SHIMOZU TADAO , NANTO KENJI , FUJI KUNIHIKO , ISOGAI MASAMI
IPC分类号： H02P3/18
摘要： PURPOSE:To brake an induction motor while regenerating a braking energy to a power source without increasing the capacity of a power converter by switching the motor energized by the output of frequency converting means through a transformer to a commercial power source and regeneratively braking the motor. CONSTITUTION:An inverter 2 and an AC transformer 3 are energized by an AC power source 1. The inverter 2 or the transformer 3 are switched by switches 5, 6 and connected with an induction motor 4. The inverter 2 supplies an output of the frequency larger than the power source 1 through the switch 5 to the motor 4, and the witch 6 is closed when the motor 4 is braked to regeneratively brake it through the transformer 3.

6. 发明专利

JPS61139273A Controller for current type inverter 失效
标题翻译：电流型逆变器控制器
公开(公告)号：JPS61139273A
公开(公告)日：1986-06-26
申请号：JP25991484
申请日：1984-12-11
申请人： Hitachi Keiyo Eng Co Ltd , Hitachi Ltd
发明人： ISOGAI MASAMI , IBORI SATOSHI , SHIMOZU TADAO
IPC分类号： H02M7/48
CPC分类号： H02M7/48
摘要： PURPOSE:To reduce the vibration and noise of an inverter capacity reduction motor by intermittently turning ON a self-extinguishing element near the time when the output current of an inverter becomes the maximum value. CONSTITUTION:A pulse train superposed on a gate signal turns ON a self- extinguishing element Su near the maximum current flowed to a self- extinguishing element Sx connected in series with a self-extinguishing element Su controlled by a gate signal. Thus, the saturated waveform is eliminated near the maximum value of positive and negative input currents to an AC machine 5, and approached to a sinusoidal wave to reduce the vibration and noise of an inverter capacity reduction motor.
摘要翻译：目的：通过在变频器的输出电流达到最大值的时候间歇地接通自熄元件，减少变频器容量降低电机的振动和噪音。构成：叠加在门信号上的脉冲串将导通一个自熄元件Su，该最大电流流过自熄元件Sx，该自熄元件Sx与由栅极信号控制的自熄元件Su串联。因此，在AC电机5的正，负输入电流的最大值附近消除饱和波形，并且接近正弦波，以减少变频器容量降低电动机的振动和噪声。

7. 发明专利

JPS6051349B2 失效
公开(公告)号：JPS6051349B2
公开(公告)日：1985-11-13
申请号：JP9791077
申请日：1977-08-17
申请人： HITACHI LTD
发明人： TANABE SHOJI , SHIMOZU TADAO

8. 发明专利

JP2001128394A DYNAMO-ELECTRIC MACHINERY 失效
公开(公告)号：JP2001128394A
公开(公告)日：2001-05-11
申请号：JP30278899
申请日：1999-10-25
申请人： HITACHI LTD
发明人： SAKAI TOSHIHIKO , SHIMOZU TADAO , OHARA KOICHIRO
IPC分类号： H02K1/18 , H02K1/14
摘要： PROBLEM TO BE SOLVED: To provide a dynamo-electric machinery, which enhances the working efficiency and reduces the manufacturing cost without necessity of higher accuracy, which is required for the ring member inserting groove in the stator iron plate and for the projected part of the teeth member. SOLUTION: In a dynamo-electric machinery consisting of stators 101, 102, in which a plurality of stator iron plates 1 are laminated and are then fixed by the molding, a rotor 103 having the rotating shaft and end brackets 106, 107 holding the stator and rotor or the like, a stator iron plate 1 is composed of a ring member 11, having a inserting groove 12 and a teeth member 13 having a projected part 14 to be inserted to the inserting groove 12, the shapes of the ring member inserting groove 12 and projected part 14 of the teeth member are respectively tapered inversely to become wider going toward the deeper area of groove and end area of the projected part at the side surfaces 12a, 14a and moreover a gap is formed between the groove and projected part in the deeper surface of inserting groove 12b.

9. 发明专利

JPH10191646A INVERTER DEVICE 失效
公开(公告)号：JPH10191646A
公开(公告)日：1998-07-21
申请号：JP34828996
申请日：1996-12-26
申请人： HITACHI LTD
发明人： ENDO TSUNEHIRO , ISHIDA SEIJI , NANTO KENJI , SHIMOZU TADAO , BENKOKU HIROYUKI
IPC分类号： H02M7/04 , H02M7/12 , H02M7/48 , H02P27/06 , H02P7/63
摘要： PROBLEM TO BE SOLVED: To provide an inverter device easy to change the specification. SOLUTION: An inverter device comprises >=22 separable blocks, and one of the blocks is an inverter base part 100 comprising a main circuit part 2, a power source and sensor part 4, and a core control part including a microcomputer 62 to control the main circuit part 2, and the other block is an I/O circuit block 200 part comprising either of an A-type I/O block 8, a B-type I/O block 9 or a personal computer 10 provided with an input/output interface part including a signal connection terminal. Either of the A-type I/O block 8, the B-type I/O block 9, or the personal computer 10 in the I/O circuit block 200 is selected, and connected to the inverter base part 100 to constitute the inverter device. The customer's specification can be satisfied only by selecting the I/O block without changing the inverter base part 100.

10. 发明专利

JPH0775382A METHOD AND DEVICE FOR CONTROLLING OPERATION OF INDUCTION ELECTRIC MOTOR 失效
公开(公告)号：JPH0775382A
公开(公告)日：1995-03-17
申请号：JP9868994
申请日：1994-05-12
申请人： HITACHI LTD , HITACHI KEIYO ENG
发明人： IBORI SATOSHI , SHIMOZU TADAO , YABU MASATOMO
IPC分类号： H02P1/30 , H02P27/06 , H02P7/63
摘要： PURPOSE:To rapidly and smoothly restart an induction electric motor when power supply to the induction electric motor is suspended. CONSTITUTION:If it is judged that there is no residual voltage when restarting an induction electric motor after a power supply momentary stop occurs during the operation of the induction electric motor and when power recovers after the power supply momentary stop, an AC power is applied to the induction electric machine, the AC power to the induction electric motor is cut off after the application, the frequency of the residual voltage generated at the primary side terminal of the induction electric motor is detected after the cut off, and then the induction electric motor is restarted according to the detected frequency, thus rapidly and smoothly restarting the induction electric motor after the momentary stop.

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