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41. 发明专利

JP2004018248A Braking device for elevator 审中-公开
公开(公告)号：JP2004018248A
公开(公告)日：2004-01-22
申请号：JP2002179627
申请日：2002-06-20
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KISHIKAWA KOSEI , ONUMA NAOTO
IPC分类号： B66B1/26 , F16D65/28 , F16D65/34
摘要： PROBLEM TO BE SOLVED: To suppress electromagnetic force from affecting the outside by reducing electromagnetic force generated from a main coil speedily in the case of emergency braking. SOLUTION: When a brake is released to operate an elevator, contactors 11, 12 are turned on to supply electric power from power supply 10 to the main coil 14, and a brake shoe 16 is separated from a brake drum 17 by electromagnetic force generated from the main coil 14 to rotate a motor connected with the brake drum 17. In the case of emergency braking such as power failure, both of the contactors 11, 12 are turned off to make a current Ic1 flowing in the main coil 14 flow as a current Ic2 in the reverse direction to the current Ic1 in an auxiliary coil 15. Magnetic flux in the reverse direction to magnetic flux B of the main coil 14 is generated from the auxiliary coil 15, electromagnetic force generated from the main coil 14 is weakened by electromagnetic force generated from the auxiliary coil 15, and the brake shoe 16 is quickly pressed against the brake drum 17 to stop the rotation of the motor immediately. COPYRIGHT: (C)2004,JPO

42. 发明专利

JP2001204195A DRIVING SYSTEM FOR AC MOTOR 失效
公开(公告)号：JP2001204195A
公开(公告)日：2001-07-27
申请号：JP2000014036
申请日：2000-01-19
申请人： HITACHI LTD
发明人： YOSHIKAWA TOSHIFUMI , ONUMA NAOTO , MITSUNE SHUNSUKE , KISHIKAWA KOSEI , IKIMI TAKASHI , OKUYAMA TOSHIAKI
IPC分类号： H02P27/06 , H02P7/63
摘要： PROBLEM TO BE SOLVED: To a motor driving apparatus equipped with control units having a mounting configuration more resistive to failure. SOLUTION: In the mounting configuration of control, a plurality of control units controlling individually a plurality of power converters are installed. Each of the control units receives an output current detected value of the power converter which a self unit controls individually, and the output current detected values of power converters except the power converter which the self unit controls. Each of the control units outputs a control command to the self power converter by using the current detected values, in such a manner that a control gain to an output current summed value and a control gain to the unbalanced component of output current of each power converter are made different from each other and an output current of the self power converter is made coincide with or be proportional to the command value.

43. 发明专利

JP2001119925A SEMICONDUCTOR POWER CONVERTER 失效
公开(公告)号：JP2001119925A
公开(公告)日：2001-04-27
申请号：JP29864899
申请日：1999-10-20
申请人： HITACHI LTD , HITACHI BUILDING SYS CO LTD
发明人： MORI KAZUHISA , KOYANAGI ASAKO , KISHIKAWA KOSEI , MITSUNE SHUNSUKE , FUKUDA SATORU
IPC分类号： H02M1/32 , H02M7/48 , H02M1/00
摘要： PROBLEM TO BE SOLVED: To readily suppress increase in surge voltage caused by dividing each laminated conductor into its constituent conductors, by eliminating the increases of the inductance portions of the divided constituent conductors, even if connecting portions whereby the two laminated conductors are connected are present. SOLUTION: With respect to connective portions C1, C2, whereby constituent conductors 11, 12 of one laminated conductor 1 and corresponding constituent conductors 21, 22 of another laminated conductor 2 are connected, expanded portions 21A, 22A are provided, for example, in the adjacent side-edge portions to each other of the constituent conductors 21, 22. As a result, the sectional areas of the side-edge portions wherethrough high-frequency current components are increased, especially accompanied by switchings, are made to flow in a deflection way in the connective portions C1, C2 of the respective constituent conductors, as to make obtainable the reductions of the inductance portions of the connective portions C1, C2.

44. 发明专利

JP2003246561A CONTROL METHOD AND CONTROL APPARATUS FOR ELEVATOR 审中-公开
公开(公告)号：JP2003246561A
公开(公告)日：2003-09-02
申请号：JP2002051689
申请日：2002-02-27
申请人： HITACHI LTD
发明人： OKI SHIGERU , KISHIKAWA KOSEI , ONUMA NAOTO
IPC分类号： B66B1/30 , B66B5/00
摘要： PROBLEM TO BE SOLVED: To idle a motor before such frictional force that a rope bites into a groove of a sheave is generated between the rope and sheave, at the time of normal operation of an emergency stop device. SOLUTION: When a test for checking safety of the emergency stop device 21 is performed, a torque instruction pattern B at a time of a specific operation whose time change ratio in torque is larger than that of a torque instruction pattern A1 at the time of a constant operation is output from a second start compensation torque instruction device 24. An inverter 12 is controlled according to the torque instruction pattern B, the torque according to the torque instruction pattern B is given from the motor 13 to the sheave 16 and rotation of the sheave 16 is stopped by a brake 14. Then, under a condition where torque with respect to the sheave 16 is to the maximum, a brake start instruction is given by a second brake start instruction device 29 to release the brake 14, the maximum torque is rapidly given to the sheave 16, and the motor 14 is idled in a state where the emergency stop device 21 is in the normal operation state. COPYRIGHT: (C)2003,JPO

45. 发明专利

JP2002223582A APPARATUS AND METHOD FOR CONTROLLING PERMANENT MAGNET TYPE SYNCHRONOUS MOTOR 失效
公开(公告)号：JP2002223582A
公开(公告)日：2002-08-09
申请号：JP2001018450
申请日：2001-01-26
申请人： HITACHI LTD
发明人： ONUMA NAOTO , HOKARI SADAO , MATSUKUMA TOSHIJI , MITSUNE SHUNSUKE , KISHIKAWA KOSEI , OKI SHIGERU
IPC分类号： B66B1/30 , H02P6/06 , H02P6/08 , H02P6/10 , H02P21/00 , H02P21/05 , H02P21/14 , H02P21/18 , H02P21/22 , H02P21/24 , H02P23/04 , H02P23/12 , H02P23/14 , H02P23/16 , H02P23/18 , H02P27/04 , H02P27/08
摘要： PROBLEM TO BE SOLVED: To suppress ripple components generated at the output torque of a permanent magnet type synchronous motor, even if the output torque of the synchronous motor changes in whatever manner. SOLUTION: An apparatus for controlling the permanent magnet type synchronous motor comprises a torque ripple suppressing control means 80, having a torque ripple amplitude arithmetic means 81 for calculating the amplitude of a torque ripple generated at the output torque of the permanent magnet type synchronous motor 40, in response to the amplitude of a torque command T* of the motor 40 for outputting a torque ripple amplitude signal Tnf, a torque ripple phase arithmetic means 82 for calculating a sine wave signal sin(n.θd+δn), in response to a phase of the torque ripple from a pole phase θd of the motor, and a multiplying means 83 for multiplying the torque ripple amplitude signal by a sine wave signal, in response to the phase of the torque ripple to output a torque ripple suppressing signal Tsup* for suppressing ripple components generated at the output torque of the motor. Thus, the torque ripple suppressing signal is injected in the torque command of the motor to generate a new torque command T**.

46. 发明专利

JP2000102241A POWER-CONVERTING DEVICE 失效
公开(公告)号：JP2000102241A
公开(公告)日：2000-04-07
申请号：JP11045599
申请日：1999-04-19
申请人： HITACHI LTD , HITACHI BUILDING SYS CO LTD
发明人： MITSUNE SHUNSUKE , KISHIKAWA KOSEI , FUKUDA SATORU
IPC分类号： H02M7/12 , H01L25/00 , H02M1/00
摘要： PROBLEM TO BE SOLVED: To suppress the rebound voltage due to the recovery of a snubber diode by molding a first serially connected body of a first capacitor that is connected in parallel with a semiconductor element and a diode and a second serially connected body of a second capacitor, that is connected in parallel with the diode and a resistor into a single piece. SOLUTION: A snubber module 6 incorporates a snubber capacitor 8, a CD snubber that is connected between lead terminals 31 and 32 consisting of a serially connected body of a snubber diode 10, and a CR snubber 22 that is connected in parallel with the diode 10 and consists of a serially connected body of a second capacitor 18 and a resistor 20. Then, the CD snubber and the CR snubber 22 are molded into a single piece and are accommodated in the same package, thus increasing the latitude of freedom for the arrangement of the CR snubber 22, achieving wiring in an extremely small space, accommodating the current loop of the CD snubber within an extremely small space, and suppressing wiring inductance to be low.

47. 发明专利

JPH11171412A ELEVATOR CONTROL SYSTEM 失效
公开(公告)号：JPH11171412A
公开(公告)日：1999-06-29
申请号：JP34754097
申请日：1997-12-17
申请人： HITACHI LTD
发明人： ONUMA NAOTO , HOKARI SADAO , MUTO NOBUYOSHI , KISHIKAWA KOSEI
IPC分类号： B66B1/30 , B66B1/32
摘要： PROBLEM TO BE SOLVED: To provide an elevator control system that produces a startup compensating torque precisely and quickly at an elevator startup. SOLUTION: This elevator control system has an inverter 2 for supplying a variable-voltage, variable-frequency alternating current to an electric motor 4 used for a hoisting machine 7 for lifting or lowering a car 8, an electromagnetic brake 6 for holding the hoisting machine 7 stopped during an elevator stop, and a torque-establishment determination means 220 for determining that the torque of the electric motor 4 is established at a preset value. In dependence of the output of the torque-establishment determination means 220, the electromagnetic brake 6 is released to run the hoisting machine 7.

48. 发明专利

JP2002084766A SEMICONDUCTOR POWER CONVERTER 失效
公开(公告)号：JP2002084766A
公开(公告)日：2002-03-22
申请号：JP2000269601
申请日：2000-09-06
申请人： HITACHI LTD , HITACHI BUILDING SYS CO LTD
发明人： MORI KAZUHISA , KOYANAGI ASAKO , FUKUDA SATORU , MITSUNE SHUNSUKE , KISHIKAWA KOSEI , SAKOTA TOMOJI
IPC分类号： H01L25/07 , H01L25/18 , H02M1/14 , H02M5/458 , H02M7/00 , H02M7/04 , H02M7/12 , H02M7/48 , H02M7/5387
摘要： PROBLEM TO BE SOLVED: To reduce inductance and control an overshooting voltage by utilizing a conductor of the simplified structure. SOLUTION: This semiconductor power converter comprises a group of capacitors connected in parallel, and a converter and an inverter respectively including a plurality of switching elements. The positive conductor connecting (connecting conductor) portions 21a1 to 21a3 of the divided converter and the positive conductor connecting (connecting conductor) portions 21b1 to 21b3 of the divided inverter are formed to the positive side conductor 21 connected to the capacitor. Moreover, the negative conductor connecting (connecting conductor) portions 22a1 to 22a2 of the divided converter and the negative conductor connecting (connecting conductor) portions 22b1 to 22b2 of the divided inverter are formed to the negative side conductor 22 connected to the capacitor. In addition, the positive side conductor 21 and negative side conductor 22, positive conductor of converter and negative conductor of converter (not illustrated), and positive conductor of inverter and negative conductor of inverter (not illustrated) are respectively laminated via an insulation plate 20.

49. 发明专利

JP2002010684A DRIVING SYSTEM FOR AC MOTOR 失效
公开(公告)号：JP2002010684A
公开(公告)日：2002-01-11
申请号：JP2000189715
申请日：2000-06-20
申请人： HITACHI LTD
发明人： YOSHIKAWA TOSHIFUMI , ONUMA NAOTO , MITSUNE SHUNSUKE , KISHIKAWA KOSEI , HOKARI SADAO
IPC分类号： H02J3/38 , H02J3/00 , H02P21/00 , H02P21/05 , H02P21/22 , H02P23/04 , H02P23/07 , H02P25/22 , H02P27/04 , H02P27/06 , H02P27/08 , H02P7/63
摘要： PROBLEM TO BE SOLVED: To obtain a motor-driving unit having a simple control structure that allows a quick changeover to an individual operation mode of an inverter. SOLUTION: A control command for each power converter is obtained from the sum of outputs of a plurality of current-compensation means disposed in parallel, and each of a plurality of the current-compensation means compensates that a differential shall be zero between a detection value of an output current of each of the power converters and the current-command value that should be output by each of the power converter.

50. 发明专利

JP2001008459A CONTROLLER FOR ELEVATOR 失效
公开(公告)号：JP2001008459A
公开(公告)日：2001-01-12
申请号：JP17192099
申请日：1999-06-18
申请人： HITACHI LTD , HITACHI BUILDING SYS CO LTD
发明人： KISHIKAWA KOSEI , MITSUNE SHUNSUKE , YOSHIDA KAORU
IPC分类号： B66B1/34 , B66B5/02 , H02J9/06 , H02M7/12 , H02M7/5387 , H02M7/797 , H02P27/06 , H02P5/41
摘要： PROBLEM TO BE SOLVED: To prevent deterioration of emergency DC power due to regenerated power by connecting a discharge resistor to a phase different from a phase to which emergency DC power is connected and absorbing the regenerated power of elevator regenerative running, when power is cut by the two systems of emergency DC power and the discharging resistor. SOLUTION: When a commercial power 1 is cut, a contact point 2 is opened, and a contact point 3 is closed. An emergency DC power (battery) 5 is applied to the AC side of a converter 8. Converter elements 8b and 8f are always set to an arc extinguishing state, and a converter element 8e is always set to be the arc extinguishing state. At power running, a converter element 8d is switched and chopper control is executed. At regenerative running, a converter element 8a is switched, and voltage drop chopper control is executed. Regenerated energy is supplied to the emergency DC power 5. When the current detection value of a converter 6 reaches a prescribed value, the switching of the converter element 8a is stopped, and a converter element 8c is switched, and regenerated energy is consumed by a discharge resistor 17.

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