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1. 发明专利

JPH0461589B2 失效
公开(公告)号：JPH0461589B2
公开(公告)日：1992-10-01
申请号：JP3136281
申请日：1981-03-06
申请人： HITACHI LTD
发明人： ANDO TAKEYOSHI , SHIMA KYOYA , KUROBA HIROAKI , INABA HIROMI , KUROSAWA TOSHIAKI , SATO HIROSHI
IPC分类号： H02M1/084 , H02M1/08 , H02M7/525 , H02P7/292

2. 发明专利

JPS5947557B2 JPS5947557B2 - 失效
公开(公告)号：JPS5947557B2
公开(公告)日：1984-11-20
申请号：JP1592176
申请日：1976-02-18
申请人： Hitachi Ltd
发明人： ANDO TAKEYOSHI , SHIMA KYOYA , INABA HIROMI , TASHIRO FUSASHI , KUROSAWA TOSHIAKI , KUROBA HIROAKI
IPC分类号： B66B1/24 , B66B1/28 , B66B1/30 , H02P7/298
摘要： PURPOSE:To obtain an economical controller by providing a first power converter for applying armature current and a second power converter for applying field winding current, and by speedcontrolling the deviation between instructed speed and the actual speed by employing a proportion integrator.

3. 发明专利

JPS59149285A Drive for elevator on service interruption 失效
标题翻译：驱动电梯在服务中断
公开(公告)号：JPS59149285A
公开(公告)日：1984-08-27
申请号：JP1876483
申请日：1983-02-09
申请人： Hitachi Ltd , Hitachi Eng Co Ltd
发明人： KUROSAWA TOSHIAKI , UEDA AKITERU , ANDOU TAKEYOSHI , KUROBA HIROAKI , INABA HIROMI , NAKAJIMA HAJIME , SHIMA KIYOYA , SAKAI YOSHIO
IPC分类号： B66B5/02 , B66B1/30 , B66B5/00

4. 发明专利

JPS5882969A CONTROLLER FOR ELEVATOR JUXTAPOSED 失效
公开(公告)号：JPS5882969A
公开(公告)日：1983-05-18
申请号：JP18244781
申请日：1981-11-13
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： NAKAJIMA HAJIME , SHIMA KIYOYA , ANDOU TAKEYOSHI , KUROSAWA TOSHIAKI , KUROBA HIROAKI , INABA HIROMI , KATAYAMA YASUNORI , SAKAI YOSHIO
IPC分类号： B66B1/24 , B66B1/18 , B66B1/28 , B66B1/30

5. 发明专利

JPS5826587A CONTROL DEVICE OF DC ELEVATOR 失效
公开(公告)号：JPS5826587A
公开(公告)日：1983-02-17
申请号：JP12296181
申请日：1981-08-07
申请人： HITACHI LTD
发明人： HATAKEYAMA KEISHIN , SHIMA KIYOYA , ANDOU TAKEYOSHI , KUROBA HIROAKI
IPC分类号： B66B1/24 , B66B1/30 , H02P7/298
摘要： PURPOSE:To improve the power factor reducing the ripple contents of output current by a method wherein a DC motor is provided with the output of power converter making use of the all wave rectifying bridge circuit including a rectifier controlling phase angles subject to chopping by means of a switching device. CONSTITUTION:The comparator PA outputs the voltage command signals Sv comparing the armature current control command Sc corresponding to the speed deviation signals output from the function generator Fm with the armature current. The function generator Fm provides the gate pulse generating circuit PS with the phase command signal Salpha minimizing the control delay angle alpha within the range where the voltage comand signal Sv is larger. The function generating circuit Fp provides the gate pulse generating circuit PP with the pulse width command signal Sp maximizing the pulse width within the range where the voltage command signal Sv is larger and minimizing and specifying the pulse width within the range where said signal Sv is smaller.

6. 发明专利

JPS57195082A CONTROLLER FOR DIRECT CURRENT ELEVATOR 失效
公开(公告)号：JPS57195082A
公开(公告)日：1982-11-30
申请号：JP7663081
申请日：1981-05-22
申请人： HITACHI LTD
发明人： ANDOU TAKEYOSHI , SHIMA KIYOYA , KUROSAWA TOSHIAKI , INABA HIROMI , KUROBA HIROAKI , SAKAI YOSHIO
IPC分类号： B66B1/24 , B66B1/28 , B66B1/30 , B66B5/00 , B66B5/02 , H02P7/298

7. 发明专利

JPS57183266A MINIMUM FIRING ANGLE GENERATOR 失效
公开(公告)号：JPS57183266A
公开(公告)日：1982-11-11
申请号：JP6101982
申请日：1982-04-14
申请人： HITACHI LTD
发明人： KUROSAWA TOSHIAKI , SHIMA KIYOYA , ANDOU TAKEYOSHI , INABA HIROMI , KUROBA HIROAKI
IPC分类号： H02M1/084 , H02M1/08
摘要： PURPOSE:To generate the minimum firing angle having less variation and stability by providing a pulse transformer connected with a primary coil between one end of at least one resistor of a plurality of resistors and a common connecting point of the resistors. CONSTITUTION:A primary coil N1 and a secondary coil N2 are provided in a pulse transformer PT, and a pulse is generated at the coil N2 whenever the polarity of a current flowing through the coil N1 varies. A current IU flows through a resistor RU via the coil N1, and a pulse P is generated at the coil N2 whenever the current IU varies from positive to negative. This pulse P is applied to a firing circuit for controlling the firing angle of a thyristor correspondingly through a diode D to fire the circuit, thereby always supplying the stable minimum firing angle (30 deg.).

8. 发明专利

JPS57148573A GATE DRIVING CIRCUIT FOR POWER CONVERTER 失效
公开(公告)号：JPS57148573A
公开(公告)日：1982-09-13
申请号：JP3136281
申请日：1981-03-06
申请人： HITACHI LTD
发明人： ANDOU TAKEYOSHI , SHIMA KIYOYA , KUROBA HIROAKI , INABA HIROMI , KUROSAWA TOSHIAKI , SATOU HIROSHI
IPC分类号： H02M1/084 , H02M1/08 , H02M7/525 , H02P7/292
摘要： PURPOSE:To improve the power factor of a power converter over a wide range and to enable accurate control of the output voltage of the converter by controlling the GTOSCR of one arm of a full-wave bridge circuit in response to the phase shift signal and a chopping signal synchronized with the signal. CONSTITUTION:SCR U1, V1, W1 of one arm of a full-wave rectifying bridge circuit are formed in GTO which interrupts a current by flowing a pulse reverse current to the gates, the phase angle of the bridge circuit is controlled with a phase shift siganl generator PS of a gate driving circuit GD, thereby converting the electric power between AC and DC. This circuit GD has a chopping signal generator CSG which controls the opening and cloing time durations of the respective GTOSCR and a gate pulse generator PC which generates a gate signal to the GTOSCR in response to the phase shift signal and the chopping signal, and the chopping signal CS synchronized with the phase shift signal is inputted to the circuit PC in the circuit CSG.

9. 发明专利

JPS5725191A Controlling device for dc elevator 失效
标题翻译：直流电梯控制装置
公开(公告)号：JPS5725191A
公开(公告)日：1982-02-09
申请号：JP9990580
申请日：1980-07-23
申请人： Hitachi Ltd
发明人： SHIMA KIYOYA , KUROBA HIROAKI , ANDOU TAKEYOSHI , KUROSAWA TOSHIAKI , INABA HIROMI , SAKAI YOSHIO
IPC分类号： B66B1/24 , B66B1/30 , H02P7/292 , H02P7/298
CPC分类号： H02P7/293
摘要： PURPOSE:To improve a power factor of a full-wave rectifying circuit at the low- output voltage as well as to provide miniaturizing of a power supply source, forming GTO's consisting of a three-phase full-wave rectifying circuit and by switching these GTO's on and off with the frequency of 6 times the power supply source frequency or higher. CONSTITUTION:In case where armature current control of a d.c. motor M for driving a d.c. elevator is performed by means of a 3-phase full-wave rectifying circuit, at least three elements U1, U1 and W1 out of six elements U1 to V2, V1 to V2 and W1 to W2 forming a 3-phase full-wave rectifying circuit are constituted as a thyristor GTO (gate turn-off device) which functions as a current interrupter. A system is constructed so as to switch these GTO's on and off for six times the frequency of a 3-phase AC supply source Ea or higher with the help of a gate circuit PC. In order to decrease an output voltage of a 3-phase full-wave rectifying circuit, a phase alpha is controlled for null to generate a high voltage, and in this case the conduction time of the GTO's is enough short, so that a current flowing through the supply source Ea can be decreased to the full extent to make the power factor closer to 1.
摘要翻译：目的：提高低输出电压下全波整流电路的功率因数，并提供电源的小型化，形成由三相全波整流电路组成的GTO，并通过切换这些GTO的开关频率为电源频率的6倍以上。构成：电枢电流控制直流马达M用于驱动直流电梯通过三相全波整流电路进行，六个元件U1至V2，V1至V2和W1至W2中的至少三个元件U1，U1和W1形成三相全波整流电路构成用作电流中断器的晶闸管GTO（闸极关断装置）。构造一个系统，以便通过门电路PC的帮助将这些GTO的开关频率切换为三相交流电源Ea或更高的六倍。为了降低三相全波整流电路的输出电压，相位α被控制为零以产生高电压，并且在这种情况下，GTO的导通时间足够短，使得电流流动通过供电源Ea可以全面降低使功率因数接近1。

10. 发明专利

JPS5629317A CURRENT TRANSFORMER 失效
公开(公告)号：JPS5629317A
公开(公告)日：1981-03-24
申请号：JP10505979
申请日：1979-08-20
申请人： HITACHI LTD
发明人： SHIMA KIYOYA , KUROBA HIROAKI
IPC分类号： H01F38/28 , H01F38/30
摘要： PURPOSE:To obtain a current transformer extremely inexpensively by selecting a a secondary winding so that is normal exciting voltage may fall within a specific voltage range and employing an enameled wire for the secondary winding. CONSTITUTION:A secondary winding is so selected that its normal exciting voltage may fall within 15-40V, O type enameled wire is selected therefor in a structure omitting interlayer insulator of the secondary winding. If the power source voltage for saturating an iron core 6 is lower than 40V when a commercial frequency AC power source voltage is applied as a normal exciting voltage to the secondary winding, the secondary winding will not break its insulation by the voltage caused when a load is accidentally opened even if interlayer insulator is not employed when O tupe enameled wire is used as the secondary winding. In this manner there can be extremely inexpensively obtained a current transformer.

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