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31. 发明专利

JPH07131907A INVERTER GROUP CONTROLLER FOR ELECTRIC RAILCAR 失效
公开(公告)号：JPH07131907A
公开(公告)日：1995-05-19
申请号：JP29895893
申请日：1993-11-04
申请人： HITACHI LTD
发明人： MATSUI TAKAYUKI , TSUBOI TAKASHI , TOYODA EIICHI , HORIE SATORU , SAKATA KAZUHIRO , SAITO HIDEJI
IPC分类号： B60L9/16 , B60L15/32 , H02P5/46
摘要： PURPOSE:To prevent a train composed of a plurality of electric railcars coupled to be driven by one or more inverters from slipping or skidding by coupling the railcars by inverters and drive control means of the respective railcars via a communication network during a period in which the railcars pass a curved part, reducing torques of motors of the respective railcars and traveling at a constant speed. CONSTITUTION:A train is composed by coupling four electric railcars having AC motors 8a, 8b-11a, 11b to be driven by inverters 4-7. A communication network 3 is coupled between the inverters 4-7 of the railcars and cab controllers. Currents and speeds of the railcars are respectively detected by current detectors 15-19 and speed detectors 12a-15b, and input to the network 3. A cab controller 21 maintains a constant speed drive in which torques of the motors are reduced according to an operation command to be applied by a driver from a cab operating unit 20 until g head railcar enters bent part and he tail railcar passes through the part, and a limit speed command responsive to a.counted amount of the part is applied. suppress squeak.

32. 发明专利

JPH06319263A INVERTER APPARATUS 失效
公开(公告)号：JPH06319263A
公开(公告)日：1994-11-15
申请号：JP21028191
申请日：1991-07-26
申请人： HITACHI LTD , HITACHI TECHNO ENG
发明人： MATSUI TAKAYUKI , HORIE SATORU , SAITO HIDEJI , TOYODA EIICHI , SAKATA KAZUHIRO , KAWAKAMI TETSUYA , ANDO TAKESHI , TSUBOI TAKASHI , NAKAMURA KIYOSHI , NAKADA KIYOSHI , TSUTSUI YOSHIO , TANAMACHI TOKUNOSUKE
IPC分类号： B60L9/16 , H02M7/48 , H02M7/497 , H02M7/515 , H02P27/06 , H02P27/08 , H02P7/63
摘要： PURPOSE:To prevent overcurrent and the stoppage of operation by generating a PWM signal with a DC power supply having a neutral point and providing a short-circuit detector and a switch for every unit inverter at the time of driving a multiple inverter having a plurality of unit inverters. CONSTITUTION:A voltage command arithmetic unit 4 generates three-phase AC voltage commands VU* to VW* from a DC power supply having a neutral point with a frequency command f1, and it is inputted to a PWM signal arithmetic unit 3. The arithmetic unit 3 generates a PWM signal to drive a multiple inverter 1 made up of a plurality of unit inverters. The multiple inverter 1 outputs a three-phase AC to rotate a motor 2. A filter circuit 5 detects a current or a voltage for every unit inverter of the multiple inverter 1 to output it to an absolute-value circuit 6. The absolute value sought in the circuit 6 is added 7 to a reference signal SC* to output a deviation to a decision device 8. The unit inverter in which the deviation is not less than a predetermined value is determined to be in the fault phase to fix an output at a zero by opening a path from a direct-current circuit. Thereby, the operation thereof is continued with the remaining sound phases.

33. 发明专利

JPH0334318B2 失效
公开(公告)号：JPH0334318B2
公开(公告)日：1991-05-22
申请号：JP20509581
申请日：1981-12-21
申请人： HITACHI LTD
发明人： OKAMATSU SHIGETOSHI , JINBO YOSHIJI , TSUBOI TAKASHI , NARITA HIROSHI , SUZUKI MASAHITO
IPC分类号： H02P27/06

34. 发明专利

JPH0313802B2 失效
公开(公告)号：JPH0313802B2
公开(公告)日：1991-02-25
申请号：JP2991181
申请日：1981-03-04
申请人： HITACHI LTD
发明人： TANAMACHI TOKUNOSUKE , IBAMOTO MASAHIKO , TERUNUMA MUTSUHIRO , TSUBOI TAKASHI , SUZUKI KATSUAKI
IPC分类号： B60L3/00 , B60L9/00 , B60L9/18 , B60L9/22 , H02P21/05 , H02P21/22 , H02P23/04 , H02P23/06 , H02P23/07 , H02P23/08 , H02P23/16 , H02P27/06 , H02P27/08

35. 发明专利

JPS6434101A ELECTRIC VEHICLE CONTROLLER 失效
公开(公告)号：JPS6434101A
公开(公告)日：1989-02-03
申请号：JP18780387
申请日：1987-07-29
申请人： HITACHI LTD
发明人： KOTAKE KAZUYOSHI , TSUBOI TAKASHI
IPC分类号： B60L3/00
摘要： PURPOSE:To suppress overcharging voltage upon putting OFF the semiconductor opening and closing element of a voltage and current controller by providing a capacitor, whose one terminal is connected between the voltage and current controller and a shunt field circuit. CONSTITUTION:When a chopper controller 7 is put ON, a main motor current IM is conducted through a circuit consisting of an armature 5, a series field coil 6 and a main smoothing reactor 23. When the chopper controller 7 is put OFF, energy, accumulated in the main smoothing reactor 23, is conducted through a fly-wheel diode 9, a shunt field coil 10 and a field shunt resistor 11. A snubber circuit is connected in parallel to the GTO thyristor 19 of the chopper controller 7. At this point, 1-2 pieces of filter capacitors are employed as a main circuit capacitor 4b while the remaining unit capacitors are employed as the main circuit capacitor 4a.

36. 发明专利

JPS62163502A INVERTER CONTROLLER FOR ELECTRIC VEHICLE 失效
公开(公告)号：JPS62163502A
公开(公告)日：1987-07-20
申请号：JP207486
申请日：1986-01-10
申请人： HITACHI LTD
发明人： TSUBOI TAKASHI
IPC分类号： H02P27/08 , B60L9/18 , B60L9/24
摘要： PURPOSE:To increase the torque of an electric vehicle in a high speed range by raising a DC voltage applied to an inverter in a 1-pulse control mode. CONSTITUTION:A DC voltage unit 2 generates a predetermined DC voltage ED, an inverter 2 inputs the voltage ED and supplies a variable voltage variable frequency AC voltage to a motor 4. An inverter controller 61 is fed back by the rotating speed omegar of the motor 4 and the current of the motor, and outputs a control command in response to the command of a torque pattern generator 64. The motor voltage EM is controlled in its pulse width so that EM/omega0 becomes constant in a range of omega0 is 0 omega1, and the motor voltage EM becomes the maximum value. The DC voltage ED is increased in a range of rotating speed omega2 of higher that a torque T approaches a limit line Tmax.

37. 发明专利

JPS61244662A SEMICONDUCTOR DEVICE FOR CAR 失效
公开(公告)号：JPS61244662A
公开(公告)日：1986-10-30
申请号：JP8360685
申请日：1985-04-20
申请人： HITACHI LTD
发明人： ITAHANA HIROSHI , TSUBOI TAKASHI , SAITO HIDEJI , USUI YOSHINORI
IPC分类号： B61C17/00 , B60L15/00 , H01L23/44

38. 发明专利

JPS6130518B2 失效
公开(公告)号：JPS6130518B2
公开(公告)日：1986-07-14
申请号：JP6385979
申请日：1979-05-25
申请人： HITACHI LTD
发明人： NARITA HIROSHI , SUZUKI MASAHITO , TSUBOI TAKASHI
IPC分类号： H02P3/14 , B60L15/28 , H02P7/282 , H02P7/298

39. 发明专利

JPS611964B2 JPS611964B2 - 失效
公开(公告)号：JPS611964B2
公开(公告)日：1986-01-21
申请号：JP8845478
申请日：1978-07-21
申请人： Hitachi Ltd
发明人： OKAMATSU SHIGETOSHI , TSUBOI TAKASHI , IBAMOTO MASAHIKO , NARITA HIROSHI
IPC分类号： B60L9/18 , B60L3/10 , H02P5/46
CPC分类号： B60L3/106 , B60L3/102 , B60L2200/26 , B60L2220/12 , B60L2220/42 , Y02T10/646 , Y02T10/648
摘要： A control system for an electric motor vehicle adapted to be driven by a group of induction motors, comprises a converter for producing an a.c. output to energize the group of induction motors, a frequency command circuit for producing a value representing a minimum number of rotations among those of at least two induction motors of the group added with a slip frequency in a power running mode of the vehicle on one hand and a value representing a maximum number of revolutions among those of at least two given induction motors of the group subtracted by the slip frequency in a regenerative braking mode, respectively, the values being utilized as frequency control commands, and a frequency control circuit for controlling the output for controlling the output frequency of the converter in dependence on the frequency control commands, thereby to improve the adhesion performance of the electric motor vehicle.

40. 发明专利

JPS60234403A CONTROLLER FOR ELECTRIC RAILCAR 失效
公开(公告)号：JPS60234403A
公开(公告)日：1985-11-21
申请号：JP8829384
申请日：1984-05-04
申请人： HITACHI LTD
发明人： TSUBOI TAKASHI , OZAWA TSUTOMU , TAKATSU EIJI
IPC分类号： B60L15/28 , B60L3/00 , B60L7/12 , B60L15/08 , H02P7/29 , H02P7/298
摘要： PURPOSE:To prevent a switching element from a large defect due to an erroneous firing by connecting resistors between field choppers of a bridge circuit of four sets of switching elements and a power source. CONSTITUTION:The voltage of an armature 3 of a DC motor is controlled by an armature chopper 1. On the other hand, the current of a field 4 is controlled by a field chopper 2 of bridge circuit of switchig elements 21-24 in response to the forward or backward, power or regenerative drive command. A current reducing resistor 12 is normally shortcircuited at both ends by a high speed breaker 8, but connected in series with the chopper 2. Thus, even if the chopper 2 is shortcircuited, the shortcircuiting current is suppressed, and there is accordingly no possibility of inducting a large defect.

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