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71. 发明专利

JPS6042718B2 失效
公开(公告)号：JPS6042718B2
公开(公告)日：1985-09-24
申请号：JP1991076
申请日：1976-02-27
申请人： HITACHI LTD
发明人： OBARA SANSHIRO , MOTOBE MITSUSACHI , HORI KOSEI
IPC分类号： H02P25/26 , H02P23/00 , H02P23/07 , H02P27/05

72. 发明专利

JPS60152283A SECONDARY RESISTANCE CONTROLLER OF WOUND-ROTOR TYPE INDUCTION MOTOR 失效
公开(公告)号：JPS60152283A
公开(公告)日：1985-08-10
申请号：JP885284
申请日：1984-01-20
申请人： FUJI ELECTRIC CO LTD
发明人： TAKAGI TAKEO , KOIE KAZUHIRO , AZEGAMI EISUKE
IPC分类号： H02P25/26 , H02P5/405
摘要： PURPOSE:To prevent a current flowed to a motor from becoming excess when an operation mode is switched by inserting an inoperation confirming circuit to a circuit for operating a shortcircuit stop relay. CONSTITUTION:Resistor shortcircuiting switches 23, 26, 29 are connected with a shortcircuit stop relay 30 by connecting in series the auxiliary contacts of the switches 23, 26, 29, the normal open auxiliary contacts of the relay 30 are connected in parallel with a series circuit of the auxiliary contacts for self-holding to form an inoperation confirming circuit 35. Thus, the relay 30 cannot operate if the all switches 23, 26, 29 are inoperative. In other words, all resistors are connected with the secondary winding when the operation mode of the motor is switched to suppress the current of the motor 4 to become excess.

73. 发明专利

JPS6082082A SECONDARY CHOPPER CONTROLLER OF WOUND-ROTOR INDUCTION MOTOR 失效
公开(公告)号：JPS6082082A
公开(公告)日：1985-05-10
申请号：JP18588483
申请日：1983-10-06
申请人： TOSHIBA KK
发明人： TAKITA MASATO , HASEGAWA HIROKI
IPC分类号： H02P25/26 , H02P5/405
摘要： PURPOSE:To enable to perform stable high speed operation by lowering the secondary frequency at the high speed time, thereby preventing the chopper current from decreasing irrespective of the decrease in the slip at the high speed time. CONSTITUTION:A motor speed (n) is detected by a speed detector 7, compared and calculated with a set speed n* by a speed controller 9, a current reference I1* is outputted, compared and calculated with the primary current I1 of a motor detected through a current transformer 6 and a current controller 11, and the output controls the ON/OFF ratio of a chopper 4 through a phase controller 12. A frequency controller 15 inputs a speed signal (n) from a speed detector 7, and the pulse frequency of the pulse generator 13 is stepwisely lowered in response to the rise of the n. Thus, the chopper frequency (f) at the high speed time is lowered to flow the sufficient secondary current I2 even at the high speed time, thereby obtaining stable high speed operation.

74. 发明专利

JPS5980184A Speed control system for induction motor 失效
标题翻译：感应电动机速度控制系统
公开(公告)号：JPS5980184A
公开(公告)日：1984-05-09
申请号：JP18922782
申请日：1982-10-29
申请人： Fuji Electric Co Ltd
发明人： KUSUMOTO SATOSHI
IPC分类号： H02P25/26
CPC分类号： H02P25/26
摘要： PURPOSE:To prevent circuit parts from being damaged in case of recovering a power interruption by providing means for detecting the power interruption and the recovery. CONSTITUTION:When a power source is recovered after a power interruption, a recovery signal is outputted from a voltage comparator 21, analog switches 11, 15, 17 are respectively recovered by the recovery signal after the prescribed period set by a timer 20, and a chopper ON/OFF pulse amplifier 19 releases the output inhibit of the ON/OFF pulse. However, since the input of an acceleration/ deceleration calculator 12 maintains the value in response to the rotating speed of a motor at the recovery time, the input deviation of a speed regulator 16 becomes zero. Accordingly, the overcurrent flowed to a transistor chopper 7 can be prevented at the recovery time.
摘要翻译：目的：通过提供检测电源中断和恢复的方法来防止电路部件损坏，以防电源中断。构成：在电源中断后恢复电源时，从电压比较器21输出恢复信号，模拟开关11,15,17分别由定时器20设定的规定期间之后的恢复信号恢复，斩波器ON / OFF脉冲放大器19释放ON / OFF脉冲的输出禁止。然而，由于加速/减速计算器12的输入响应于恢复时间的电动机的转速而保持该值，所以速度调节器16的输入偏差变为零。因此，能够在恢复时间防止流向晶体管斩波器7的过电流。

75. 发明专利

JPS5950798A Speed controlling method for motor generator 失效
标题翻译：电机发电机速度控制方法
公开(公告)号：JPS5950798A
公开(公告)日：1984-03-23
申请号：JP15892382
申请日：1982-09-14
申请人： Toshiba Corp
发明人： YAMAGISHI TOSHIO , HIRATA YUKIO
IPC分类号： H02P11/06 , H02P11/00 , H02P23/00 , H02P25/26
CPC分类号： H02P25/26
摘要： PURPOSE:To rapidly and stably recover the speed drop of a motor generator at the load time of the generator by calculating the optimum initial pole position and the high speed electrode driving time for accelerating from the present motor speed to the target speed in the minimum time. CONSTITUTION:An initial electrode position controller ISR reads out a detecting speed omega and an electrode position signal P of the secondary liquid resistor 8 of an induction motor for driving a motor generator 3 when the difference DELTAomega between a target speed omegaref and the detecting speed omega is the prescribed positive value alpha or higher, calculates the optimum electrode position Pref for accelerating the generator 3 at the rated current of a motor, and calculates the high speed electrode drive time (t) to the optimum electrode position. The high speed electrode drive circuit 7 is operated during the time (t). Thereafter, the electrode position of a liquid resistor 8 can be controlled by a speed controller ASR and the current controller ISR.
摘要翻译：目的：通过计算最佳初始极点位置和最小时间内从当前电机速度加速到目标速度的高速电极驱动时间，快速稳定地恢复发电机负载时电动发电机的速度下降。构成：当目标速度ωgaref与检测速度ω之间的差DELTAomega时，初始电极位置控制器ISR读出用于驱动电动发电机3的感应电动机的次级液体电阻器8的检测速度ω和电极位置信号P. 是规定的正值α或更高，计算用于在电动机的额定电流下加速发电机3的最佳电极位置Pref，并计算到最佳电极位置的高速电极驱动时间（t）。高速电极驱动电路7在时间（t）期间运行。此后，可以通过速度控制器ASR和电流控制器ISR来控制液体电阻器8的电极位置。

76. 发明专利

JPS58179195A Speed controlling method for induction motor 失效
标题翻译：感应电机的速度控制方法
公开(公告)号：JPS58179195A
公开(公告)日：1983-10-20
申请号：JP6061982
申请日：1982-04-12
申请人： Kawasaki Steel Corp
发明人： FUKUI YOSHIO
IPC分类号： H02P27/06 , H02P25/26
CPC分类号： H02P25/26
摘要： PURPOSE:To enhance the speed controlling accuracy by increasing the resistance of the secondary side resistor of an induction motor at the time of stalling or applying steady tension, thereby increasing the torque and preventing the stalling of the motor. CONSTITUTION:Contactors 54 are all shortcircuited in response to the signal of a controller 58 at the normal operation time, and a wound-rotor type induction motor 51 is controlled at the speed in response to the voltage and frequency applied from an inverter 38. When the slip obtained by calculation in the controller 58 exceeds an allowable value or when a steady tension is applied, the contactors 54 are switched by the output of the controller 58, thereby increasing the resistance value of the secondary side external resistor 52.
摘要翻译：目的：通过增加异步电动机在停转或施加稳定张力时的二次侧电阻的电阻来提高速度控制精度，从而增加转矩并防止电机失速。构成：响应于正常运行时间的控制器58的信号，接触器54全部短路，并且缠绕转子型感应电动机51响应于从逆变器38施加的电压和频率而被控制。当通过控制器58中的计算获得的滑移超过允许值，或者当施加稳定张力时，通过控制器58的输出切换接触器54，从而增加次级侧外部电阻器52的电阻值。

77. 发明专利

JPS56162952A STRUCTURE OF ROTOR FOR WOUND-ROTOR TYPE INDUCTION MACHINE 失效
公开(公告)号：JPS56162952A
公开(公告)日：1981-12-15
申请号：JP6656180
申请日：1980-05-21
申请人： MAEKAWA SEISAKUSHO KK
发明人： INOUE WAHEI
IPC分类号： H02K17/22 , H02K17/30 , H02P25/26
摘要： PURPOSE:To contrive to increase the operational efficiency, to reduce the axial measurements and to lower the cost for subject induction machine by a method wherein an interrupter, to be used to control the secondary side output circuit of a rotor, is equipped with a rotor in such manner that they are formed in one body and the interrupter is controlled from outside. CONSTITUTION:When the secondary side output circuit on the rotor 2 is connected to the interrupter and the interrupter is controlled at its impulse ratio, the interrupter 4 is equipped with the rotor 2 in such manner that they are formed in one body and the interrupter is controlled from outside using a sliding ring 5 and a noncontacting type rotating transformer. Through these procedures, the operational efficiency is increased as compared with the case where the secondary side output circuit is controlled by a variable transformer and the axial dimensions can be reduced.

78. 发明专利

JPS56125963A OVERLOAD DETECTOR 失效
公开(公告)号：JPS56125963A
公开(公告)日：1981-10-02
申请号：JP2844780
申请日：1980-03-06
申请人： TOKYO SHIBAURA ELECTRIC CO
发明人： NAKANO TERUO
IPC分类号： G01R19/00 , H02H7/085 , H02M5/27 , H02P25/26
摘要： PURPOSE:To enable the actual overload detection in the range of whole frequency and secure the protection by a method wherein the frequency element of a power converter is inputted to the overload detecting circuit, and the detecting point of overload is made variable in accordance with the frequency. CONSTITUTION:A current from a static power converter feeding vairable frequency AC power is inputted to an operational amplifier IC1 via a current transformer CT, a rectifier RF. In accordance with an allowable overload characteristic of the power converter, the detecting time is made longer when overload is small and shorter when overload is large, and a transistor TRS1 is made to operate to obtain a detecting signal. At this case, the frequency signal SP of the power converter is inputted to an operational amplifier IC2, and when the signal SP becomes samller than the lowest frequency signal being set by a variable resistor 4RH, output of the amplifier IC2 is made negative to bring down an operating point being set by a variable resistor 1RH through a diode D2, and a resistor R9. Accordingly overload can be surely detected in the range of whole frequency enabling the protection.

79. 发明专利

JPS5629495A SECONDARY CURRENT CONTROLLING DEVICE FOR WOUNDDROTOR TYPE INDUCTION MOTOR 失效
公开(公告)号：JPS5629495A
公开(公告)日：1981-03-24
申请号：JP10208179
申请日：1979-08-09
申请人： FUJI ELECTRIC CO LTD
发明人： OONISHI SHIGERU
IPC分类号： H02P25/26
摘要： PURPOSE:To precisely control the starting current, the torque and the speeds of the induction motor by rectifying the secondary side output of the motor and supplying the rectified output through a chopper to a load. CONSTITUTION:When three-phase alternating currents are applied to the primary winding of the induction motor 10 to start the motor, three-phase alternating current of voltage proportional to the slip is taken place at the secondary winding 10a, is applied to a rectifier circuit 11, is rectified to apply a DC voltage corresponding to the three-phase AC voltage to the chopper 12. A pulse duration control unit 13 supplies a pulse corresponding to the set value by a variable resistor 14 to the chopper 12, and the chopper 12 produces an output to a resistor 15 to be thus consumed.

80. 实用新型

JPS54137722U 失效
公开(公告)号：JPS54137722U
公开(公告)日：1979-09-25
申请号：JP3092878
申请日：1978-03-13
IPC分类号： H02P25/26 , H02M3/135 , H02P7/62

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