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41. 发明专利

JPH0458276B2 失效
公开(公告)号：JPH0458276B2
公开(公告)日：1992-09-17
申请号：JP7813386
申请日：1986-04-07
申请人： KANSAI DENRYOKU KK , HITACHI SEISAKUSHO KK
发明人： HARAGUCHI EIJI , NAKAGAWA HIROTO , BANDO AKIRA , KUWABARA HISAO , SUGISAKA HIROSHI
IPC分类号： H02P25/04 , H02P21/34 , H02P23/00 , H02P23/07 , H02P23/16 , H02P27/04 , H02P27/05 , H02P27/06 , H02P27/16

42. 发明专利

JPH04207994A CONTROLLER FOR INDUCTION MOTOR 失效
公开(公告)号：JPH04207994A
公开(公告)日：1992-07-29
申请号：JP32924590
申请日：1990-11-30
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： TAKAHASHI TSUYOSHI , YAMAZAWA YUJI
IPC分类号： H02P23/00 , H02P23/07 , H02P23/24 , H02P25/10 , H02P27/02 , H02P27/16
摘要： PURPOSE:To make it possible to continue the operation when one phase is opened, by changing a parameter table to be referred by the program of a microprocessor, changing the number of arms and the firing time of a control element and generating a three-phase voltage from the current of a sound phase. CONSTITUTION:State of a push-button switch 15 and the state of synchronous signal of each phase are taken in by a synchronous signal interrupt, an input signal combined with the state of open phase from the forward/reverse command and the presence of synchronous signal of each phase is compared with the present operation data and predetermined reference table data, thereby making new operation data and setting a phase shift control timer aligned with the new operation data. When the phase shift control timer is set, then timer interrupt occurs at set time. By the timer interrupt, the pulse data determined by operation data are referred, each bidirectional control element is fired, and a voltage is applied to a three-phase induction motor 3 and the motor is rotated. The firing order of the bidirectional control element can be changed only by changing the pulse data.

43. 发明专利

JPH0446080B2 失效
公开(公告)号：JPH0446080B2
公开(公告)日：1992-07-28
申请号：JP5003484
申请日：1984-03-15
申请人： TOKYO SHIBAURA ELECTRIC CO
发明人： SUGI KAZUHIRO
IPC分类号： H02P27/16 , H02M5/27 , H02P27/06

44. 发明专利

JPH0446078B2 失效
公开(公告)号：JPH0446078B2
公开(公告)日：1992-07-28
申请号：JP11829481
申请日：1981-07-27
申请人： SHINHO KOGYO KK
发明人： TAKEMURA YUTAKA , TAKAO NOBUHIRO
IPC分类号： H02P27/16 , F16H61/00 , G05D13/62 , H02P23/07 , H02P23/16 , H02P23/24 , H02P25/04

45. 发明专利

JPH0440956B2 失效
公开(公告)号：JPH0440956B2
公开(公告)日：1992-07-06
申请号：JP11080384
申请日：1984-06-01
申请人： HITACHI LTD
发明人： NAGASE HIROSHI
IPC分类号： H02P21/00 , H02P21/22 , H02P23/07 , H02P23/08 , H02P23/16 , H02P27/04 , H02P27/08 , H02P27/16

46. 发明专利

JPH04127893A CONTROLLER FOR SYNCHRONOUS MOTOR 失效
公开(公告)号：JPH04127893A
公开(公告)日：1992-04-28
申请号：JP24624190
申请日：1990-09-18
申请人： TOSHIBA CORP
发明人： NAKAJIMA KIHEI
IPC分类号： H02P21/00 , H02P21/22 , H02P25/022 , H02P25/026 , H02P27/04 , H02P27/16
摘要： PURPOSE:To obtain a high-performance controller for synchronous motor which is stable even in a high driving frequency domain or under a heavy load by finding a reference voltage value on a dq axis by comparing the calculated reference current value on the dq axis with a detected value and transforming the reference voltage value into a three-phase armature winding shaft by means of a coordinate transformer. CONSTITUTION:The three-phase armature current detected by means of a current detector 11 is calculated as a detected current value on a dq axis by means of a dq axis current computing element 13 together with a position signal from a position computing element 5. A magnetic flux computing element 6 calculates an armature magnetic flux from the calculated detected current value and a detected field current value. A command is given so that a torque amount current can intersect the calculated magnetic flux at right angles. A calculated reference current value is compared with the a detected value and outputted as a reference voltage values vd and vq of the dq axis by means of an amplifier 9. The reference voltage values are given to a coordinate transformer 14 and threephase winding voltages vu, vv, and vw are further obtained from the voltage reference values and the output of the position computing element 5. These values become an AC quantity which varies depending upon a rotational electrical angular frequency.

47. 发明专利

JPH04101691A FLUX OPERATING UNIT FOR SYNCHRONOUS MOTOR 失效
公开(公告)号：JPH04101691A
公开(公告)日：1992-04-03
申请号：JP21959890
申请日：1990-08-21
申请人： MITSUBISHI ELECTRIC CORP
发明人： FUJII TOSHIYUKI
IPC分类号： H02P21/00 , H02P21/12 , H02P21/13 , H02P21/14 , H02P21/18 , H02P21/22 , H02P21/24 , H02P21/28 , H02P21/30 , H02P23/14 , H02P23/16 , H02P25/022 , H02P25/026 , H02P27/04 , H02P27/16
摘要： PURPOSE:To improve the accuracy by inputting the rotational speed of rotor and the difference between estimated values and actual values of d-axis component and q-axis component of armature voltage and outputting correcting amounts of d-axis and q-axis component which are added to the input of current model flux operation. CONSTITUTION:Multiplication of speed polarity 32 is carried out, for example, prior to input to compensators 28, 29. The compensators 28, 29 are provided with primary lag filters in the proportional and integrating operations. When correcting amounts of d-axis and q-axis components 26, 27 are fed to the primary lead and lag 8, 9 in a flux operating means 19, transfer function from the d-axis and q-axis components 10, 11 of armature voltage to the estimated d-axis and q-axis components 22, 23 of the armature voltage can be primary lagged. Consequently, d-axis and q-axis components 6, 7 of armature interlinkage flux converge exponentially to actual flux. When a synchronous motor stops, gain of correction loop goes zero and only the flux operating means 19 performs operation based on a current model.

48. 发明专利

JPH0442795A SPEED CONTROLLER OF MOTOR 失效
公开(公告)号：JPH0442795A
公开(公告)日：1992-02-13
申请号：JP14771190
申请日：1990-06-06
申请人： MITSUBISHI ELECTRIC CORP
发明人： NAKAYAMA SHUNSAKU
IPC分类号： H02P27/04 , H02P21/00 , H02P21/22 , H02P23/16 , H02P27/16
摘要： PURPOSE:To suppress the overshoot of a speed feedback value to the stepped change of a speed target value by a method wherein, if the speed feedback value exceeds, or is equal to, the speed target value, the output value of a speed regulator is substituted by a torque component current value corresponding to the speed feedback value. CONSTITUTION:The speed target value omegatau* of a rotor and the speed feedback value omegatau of the rotor are inputted by a speed regulator 50. If the speed feedback value omegatau exceeds, or reaches, the speed target value omegatau* against the change of the speed target value omegatau*, the output value of the regulator 50 can be substituted by a torque component current set value iq* corresponding to the speed feedback value omegatau with the speed feedback value omegatau as a parameter. Even if an integrator is saturated to its limit, a proper value corresponding to the speed feedback value omegatau can be outputted. Therefore, a control system is stabilized and balanced and the overshoot of the speed feedback can be eliminated.

49. 发明专利

JPH03169291A CONTROLLER OF INDUCTION MOTOR 失效
公开(公告)号：JPH03169291A
公开(公告)日：1991-07-22
申请号：JP30579589
申请日：1989-11-25
申请人： HITACHI LTD
发明人： HIRANO YASUHIRO , YAMASHINA MITSUNORI , ETO TETSUO
IPC分类号： H02P27/04 , H02P21/00 , H02P21/08 , H02P21/22 , H02P23/07 , H02P23/08 , H02P23/16 , H02P23/26 , H02P27/16
摘要： PURPOSE:To improve the control factor of a cycloconverter and the efficiency of an induction motor by performing a flux weakening control through changing the flux current component of the induction motor according to the rotational speed and load of the motor. CONSTITUTION:The peak value V1 of a motor terminal voltage V1 is operated as V1=(V +V) by a peak value arithmetic circuit 13 from a d-axis voltage Vd and q-axis voltage Vq converted by a three phase-two phase converter 11. The pattern change of a secondary flux arithmetic circuit 4 is performed in such manner that the peak value V1 is equal to the maximum output voltage V1* of a cycloconverter 10. Thus, the motor terminal voltage V1 is controlled so as to reach the maximum output voltage or vicinity of the cycloconverter 10. That is, the motor terminal voltage V1, is made higher within a field- weakening control range so that the induction motor 1 can be operated at high efficiency. Also, it is possible to improve the control factor of an apparatus and also the total power factor of a system.

50. 实用新型

JPH0333197Y2 失效
公开(公告)号：JPH0333197Y2
公开(公告)日：1991-07-15
申请号：JP16235183
申请日：1983-10-19
IPC分类号： H02K17/08 , H02P27/16 , H02P7/632

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