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1. 发明专利

JP2001224195A CONTROL SYSTEM OF PERMANENT MAGNET TYPE SYNCHRONOUS MOTOR 失效
公开(公告)号：JP2001224195A
公开(公告)日：2001-08-17
申请号：JP2000034317
申请日：2000-02-07
申请人： HITACHI LTD , HITACHI BUILDING SYS CO LTD
发明人： OGAWA TAKESHI , INABA HIROMI , NAKADA TAKANORI , NIHEI HIDEKI , NAGASE HIROSHI , SUZUKI YASUTAKA
IPC分类号： H02P6/06 , H02P6/08 , H02P6/15 , H02P21/00 , H02P23/16 , H02P27/04
摘要： PROBLEM TO BE SOLVED: To correct automatically the error of a magnetic pole position detector. SOLUTION: When load torque is constant, a motor current has symmetry in the magnetizing direction, while the demagnetizing direction to the magnetic pole has phase error. When absolute values of the magnetic pole phase errors are equal, motor current values are also equal. A control phase is changed to the magnetizing direction and the demagnetizing direction, and a phase is obtained where a motor current coincides with a current aimed value larger than the motor current flowing, when the magnetic pole phase error is not present. The magnetic pole phase error is calculated as the average value of the phases. Thereby a magnet pole phase can be corrected, without adding a voltage detector or complex operation and being affected by change of motor constants, and deterioration of control performance can be prevented.

2. 发明专利

JP2001037285A STARTING METHOD OF ELEVATOR DRIVEN BY PERMANENT MAGNET TYPE SYNCHRONOUS MOTOR 失效
公开(公告)号：JP2001037285A
公开(公告)日：2001-02-09
申请号：JP20043099
申请日：1999-07-14
申请人： HITACHI LTD , HITACHI BUILDING SYS CO LTD
发明人： OGAWA TAKESHI , INABA HIROMI , NAGASE HIROSHI , NIHEI HIDEKI , NAKADA TAKANORI , ARAHORI NOBORU , SUZUKI YASUTAKA
IPC分类号： B66B1/30 , H02P6/06 , H02P6/08 , H02P6/18 , H02P6/182
摘要： PROBLEM TO BE SOLVED: To estimate the pole position through a simple means without requiring a pole position estimator. SOLUTION: In a permanent magnet type synchronous motor 51 controlled by a variable voltage and a variable frequency delivered from a power converter, and a controller for the permanent magnet type synchronous motor in machine units 11, 12, 13, 52 driven through the permanent magnet type synchronous motor, a brake 31 for holding stoppage of the machine units is released and when a motor torque generated by supplying a specified armature current is substantially balanced with a load torque regardless of the rotational position of the permanent magnet type synchronous motor, pole position phase of the permanent magnet type synchronous motor is estimated from the load torque and/or the armature current.

3. 发明专利

JP2000313570A ELEVATOR WITHOUT MACHINE ROOM 失效
公开(公告)号：JP2000313570A
公开(公告)日：2000-11-14
申请号：JP12127999
申请日：1999-04-28
申请人： HITACHI LTD , HITACHI BUILDING SYS CO LTD
发明人： INABA HIROMI , NAGASE HIROSHI , NIHEI HIDEKI , ONO KOSAKU , MATSUZAKI YOSHIO , NAKAGAWA TOSHIHIRO
IPC分类号： B66B1/06 , B66B7/00 , B66B11/08
摘要： PROBLEM TO BE SOLVED: To attain a required fixed point stop performance, speed control performance and an abnormal monitoring by providing a moving information generation sensor installed on the elevator car side and a vibration suppression and control device receiving output information of this sensor and using this output information for the operation control and monitoring of an elevator car. SOLUTION: On the elevator car side, moving information generation sensors (pulse generating devices) 18, 19 generating pulses according to moving of a car and generating moving information on the car are installed. A pulse level moving information is once received by an arithmetic unit 22 on the car and an arithmetic processing for converting moving information into a moving distance, moving speed and moving acceleration of the car is performed for moving information. This arithmetic processing result is transmitted serially or in parallel from a transmission device 23 to be an interface for transmitting information up to a control device 21 via a transmission path within a tail cord. In a vibration suppression and control device 21, a vibration suppression and control processing is performed based on moving information 24 from the car and rotation information 25 from an electric motor.

4. 发明专利

JP2001048442A ELEVATOR 失效
公开(公告)号：JP2001048442A
公开(公告)日：2001-02-20
申请号：JP23002299
申请日：1999-08-16
申请人： HITACHI BUILDING SYS CO LTD , HITACHI LTD
发明人： NAKAGAWA TOSHIHIRO , MATSUZAKI YOSHIO , NARA TOSHIHIKO , KUNII MAKOTO , TADOKORO TOSHIYUKI , NIHEI HIDEKI , INABA HIROMI , SATO ICHIYA , ONO KOSAKU
IPC分类号： B66B7/06 , B66B7/00
摘要： PROBLEM TO BE SOLVED: To provide an elevator having a stable running performance, in a comparatively high speed elevator. SOLUTION: In this elevator, a winch 6 is arranged on the lower part of an elevator shaft 1 and a first turn pulley 10 is arranged on the upper part of a car 2 and the rope 4 with a hanged car 2 is laid up and wound to the winch 6, after winding to a first turn pulley 10 and exerted so as to hang up the car 2 when the rising direction force is transmitted to the car 2 through the rope 4.

5. 发明专利

JP2000069789A EQUIPMENT AND METHOD FOR ESTIMATING ROTOR POSITION OF SYNCHRONOUS MOTOR 失效
公开(公告)号：JP2000069789A
公开(公告)日：2000-03-03
申请号：JP23764698
申请日：1998-08-24
申请人： HITACHI LTD , HITACHI BUILDING SYS CO LTD
发明人： INABA HIROMI , OGAWA TAKESHI , NAGASE HIROSHI , NIHEI HIDEKI , NAKADA TAKANORI , ARAHORI NOBORU , NOKITA AKIHIRO
IPC分类号： H02P6/18 , H02P6/06 , H02P6/08 , H02P6/182 , H02P6/26 , H02P6/28
摘要： PROBLEM TO BE SOLVED: To estimate the position of a rotor after power stoppage or a system trouble for a synchronous motor which cannot be provided with a rotor position sensor. SOLUTION: A rotor position estimating equipment which fixes the rotation of a rotor of a synchronous motor 6 and applies a plurality of instruction voltages 226 of different phases to the motor widings of the synchronous motor 6 and estimates the position of the rotor based on the response time of each response current IdM detected for each of the instruction voltages. In this case, the phases applied to a plurality of instruction voltages are set to a plurality of phases obtained by dividing the entire circumference of the synchronous motor 6 into the same angles. The position of the rotor is calculated based on the phase for which the response current of the maximum response time has been detected. The response time is measured by split plot method or a pattern matching method, so that the measuring times can be limited.

6. 发明专利

JP2001086780A METHOD FOR CONTROLLING SALIENT-POLE SYNCHRONOUS MOTOR 失效
公开(公告)号：JP2001086780A
公开(公告)日：2001-03-30
申请号：JP25844199
申请日：1999-09-13
申请人： HITACHI LTD , HITACHI BUILDING SYS CO LTD
发明人： NAKADA TAKANORI , NIHEI HIDEKI , ONUMA NAOTO , SUZUKI YASUTAKA
IPC分类号： H02P25/08 , H02P21/22 , H02P23/16 , H02P23/18 , H02P23/24 , H02P27/06 , H02P27/08 , H02P5/05 , H02P7/63
摘要： PROBLEM TO BE SOLVED: To expand the tolerance of a mounting error by controlling a current phase to the average value of the phase in the weakening field direction and strengthening field direction of a limit for assuring the required torque of a motor. SOLUTION: When a speed command ω* is outputted from a speed command device 61, a deviation Δω to an output signal ω of a speed detector 58 is inputted to a speed control device 62, and an output signal becomes a torque command signal T* of a synchronous motor 56 according to the deviation is inputted to a q-axis current command device 63 for calculating a q-axis current command Iq*. A although a d-axis current command device 64 calculates a d-axis current command Id*, the current phase is set to the average value of the phases in the direction of a weakening field and in the direction of a strengthening field of a limit, where the required torque of the synchronous motor 56 is assured. Then, both the axis current command signals Iq* and Ip* are inputted to a current control device 65 and to a PWM pulse generation device 66, PWM control is executed by a PWM pulse signal, and the output voltage and output frequency of an inverter 54 are controlled, thus expanding the tolerance for a mounting error.

7. 发明专利

JP2001031349A ELEVATOR 失效
公开(公告)号：JP2001031349A
公开(公告)日：2001-02-06
申请号：JP21243999
申请日：1999-07-27
申请人： HITACHI BUILDING SYS CO LTD , HITACHI LTD
发明人： TADOKORO TOSHIYUKI , MATSUZAKI YOSHIO , NARA TOSHIHIKO , NAKAGAWA TOSHIHIRO , KUNII MAKOTO , NIHEI HIDEKI , INABA HIROMI , SATO ICHIYA , ONO KOSAKU
IPC分类号： B66B7/00 , B66B11/04
摘要： PROBLEM TO BE SOLVED: To optionally determine the layout of a building where an elevator is installed. SOLUTION: This elevator is formed so that a wall 9 forming an installation space for a hoist 10, i.e. a machine room 8 is provided on the extension of a hoistway wall 1, thus eliminating a portion of the horizontal plane of projection of the machine room 8 projected from a horizontal plane of projection of a hoistway 2. In addition, because a rope 5 driving a car 3 is passed through a pulley 15 installed on the car 3, the rope 5 is positioned toward the hoistway wall 1 from the center of the car 3, and a sheave 16 of the hoist 10 can be disposed toward the hoistway wall 1 from the center of the horizontal plane of projection of the hoistway 2. Thus, an equipment maintenance space can be assured in the machine room 8 and, even when the wall 9 forming the machine room 8 is installed on the extension of the hoistway wall 1, there occurs no problem with maintenance.

8. 发明专利

JP2001008486A CONTROLLER FOR PERMANENT MAGNET SYNCHRONOUS MOTOR 失效
公开(公告)号：JP2001008486A
公开(公告)日：2001-01-12
申请号：JP17192199
申请日：1999-06-18
申请人： HITACHI LTD , HITACHI BUILDING SYS CO LTD
发明人： NAKADA TAKANORI , NIHEI HIDEKI , NAGASE HIROSHI , ONUMA NAOTO , SUZUKI YASUTAKA
IPC分类号： B66B1/30 , H02P6/16
摘要： PROBLEM TO BE SOLVED: To precisely correct the phase with a simple constitution by controlling d-axis current, so that the current of an armature becomes minimum when load torque is constant and correcting the rotary position of a magnetic pole. SOLUTION: In a device, a current I of an armature becomes equal to Iq and becomes minimum, when a d-axis current command Id* is controlled to be zero, when a phase error θe does not exist when load torque is constant. However, if the phase error θe to exist, a d-axis current of Id=Iqtanθe flows, if it is controlled to Id=0. Thus, it becomes I>Iq, and the current of the armature does not become minimum. Thus, the d-axis current command Id* is controlled, the current of the armature is changed, and a minimum value Imin is searched. The current Imin of the armature at the time of the minimum value is considered to be the q-axis current Iq, when the error does not exist. The error θe is calculated from the d-axis current command value Id1* at that time. Then, phase correction is made precisely with a simple constitution, and the device can be driven without dropping the characteristic of a permanent magnet synchronous motor.

9. 发明专利

JP2001089053A ELEVATOR DEVICE 失效
公开(公告)号：JP2001089053A
公开(公告)日：2001-04-03
申请号：JP26516499
申请日：1999-09-20
申请人： HITACHI LTD , HITACHI BUILDING SYS CO LTD
发明人： ONO KOSAKU , TANAKA NAOYUKI , TANAKA EIICHIRO , NIHEI HIDEKI , SATO ICHIYA , INABA HIROMI , NARA TOSHIHIKO , MATSUZAKI YOSHIO , NAKAGAWA TOSHIHIRO , TADOKORO TOSHIYUKI , KUNII MAKOTO
IPC分类号： B66B11/08
摘要： PROBLEM TO BE SOLVED: To provide a silent and inexpensive geared hoist to cope with the strong demand that the size of a machine room is reduced or the machine room is omitted in an elevator device. SOLUTION: The installation area of a hoist 21 is minimized, and the engagement noise of gears is reduced by using a hypoid gear 6 to realize the layout that a motor drive shaft 1 is across a sheave shaft 11 to the high-speed stage of a multi-stage reduction gear. As a result, an elevator device small in power consumption and low in noise level is provided. Further, an elevator device small in size of the machine room or having no machine room can be provided at a low cost.

10. 发明专利

JP2001072351A ELEVATOR 失效
公开(公告)号：JP2001072351A
公开(公告)日：2001-03-21
申请号：JP25071099
申请日：1999-09-03
申请人： HITACHI BUILDING SYS CO LTD , HITACHI LTD
发明人： TADOKORO TOSHIYUKI , MATSUZAKI YOSHIO , NARA TOSHIHIKO , NAKAGAWA TOSHIHIRO , KUNII MAKOTO , NIHEI HIDEKI , INABA HIROMI , SATO ICHIYA , ONO KOSAKU
IPC分类号： B66B7/00 , B66B11/04
摘要： PROBLEM TO BE SOLVED: To provide an elevator capable of reducing size of a machinery room for disposing a hoisting machine. SOLUTION: A hoistway 1 and a machinery room 30 are formed as a continuos space, a support beam member 20 is supported by support 18a, 18b provided in a boundary part between a hoistway side wall 1a and a machinery room side wall 30a, the support beam member 20 is loaded with at least a hoisting machine to be supported, and especially the support beam member 20 is formed not to block up the whole of the floor surface, but like a beam, thereby securing a maintenance space having an enough area communicating from the hoistway 1 to the interior of the machinery room 30 on the side of the support beam member 20 and the hoisting machine 14.

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