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91. 发明专利

JPH1042588A CONTROLLER FOR MOTOR AND VARIABLE-SPEED GENERATOR 失效
公开(公告)号：JPH1042588A
公开(公告)日：1998-02-13
申请号：JP19179496
申请日：1996-07-22
申请人： HITACHI LTD
发明人： FUTAMI MOTOO , KUBOTA YUZURU , ICHINOSE MASAYA , MOTOBE MITSUSACHI , HIGUCHI MIKISUKE
IPC分类号： H02J3/38 , H02J3/26 , H02P21/05 , H02P21/22 , H02P23/00 , H02P23/04 , H02P23/07 , H02P27/05 , H02P7/52
摘要： PROBLEM TO BE SOLVED: To minimize the influence of the negative-phase-sequence components of primary voltage, by converting the negative-phase-sequence components in the primary-side voltage of a motor into secondary-side alternating-current part, and superposing the secondary-side alternating-current part on the alternating-current voltage applied from the secondary side as high-frequency voltage. SOLUTION: The voltage vector of the negative-phase-sequence components in the primary- side voltage of a motor 9 is detected using a negative-phase-sequence component detector 1. The phase of the negative-phase-sequence voltage components is detected through a negative- phase-sequence voltage phase detector 15. A secondary induced voltage converter 2 detects the induced voltage, corresponding to the negative-phase-sequence components in the voltage, and a compensating voltage generator 3 creates a voltage command to a frequency converter 8, so as to cancel out the induced voltage. A compensating phase detector 16 detects the rotor-side phase of the negativephase-sequence voltage from slip phase and negative-phase- sequence voltage phase, and a three-phase converter 4 divides the negative-phase-sequence compensating voltage into three phases to create a voltage command correction value. Since compensation can be made before a current due to the induced voltage starts to flow, therefore, it is possible to eliminate the effects of the negative-phase-sequence components without phase delay.

92. 实用新型

JPS50100638U 失效
公开(公告)号：JPS50100638U
公开(公告)日：1975-08-20
申请号：JP942474
申请日：1974-01-22
IPC分类号： H02H7/09 , H02H3/34 , H02P21/36 , H02P23/00 , H02P23/07 , H02P25/10 , H02P7/52

93. 实用新型

JPS438406Y1 失效
公开(公告)号：JPS438406Y1
公开(公告)日：1968-04-15
申请号：JP3876466
申请日：1966-04-25
IPC分类号： H02P21/36 , H02P23/00 , H02P23/07 , H02P27/05 , H02P7/52

94. 实用新型

JPS414584Y1 失效
公开(公告)号：JPS414584Y1
公开(公告)日：1966-03-16
申请号：JP927065
申请日：1965-02-10
IPC分类号： H02P23/00 , H02P21/05 , H02P23/04 , H02P23/07 , H02P27/05 , H02P7/52

95. 实用新型

JPS4019765Y1 失效
公开(公告)号：JPS4019765Y1
公开(公告)日：1965-07-10
申请号：JP1375164
申请日：1964-02-14
IPC分类号： H02P23/00 , H02P21/04 , H02P21/34 , H02P23/03 , H02P23/07 , H02P27/05 , H02P7/52

96. 发明专利

JP2000287490A MOTOR CONTROLLER 失效
公开(公告)号：JP2000287490A
公开(公告)日：2000-10-13
申请号：JP9203799
申请日：1999-03-31
申请人： TOSHIBA CORP
发明人： ABE KIKUO
IPC分类号： H02P23/00 , H02P23/07 , H02P23/16 , H02P23/24 , H02P7/52
摘要： PROBLEM TO BE SOLVED: To provide a motor controller which is small in loss, by reducing the loss during waiting of a motor. SOLUTION: This motor controller has a gate block condition setter 9 which sets the conditions of gate block to stop the supply of control signal to a semiconductor element for power constituting a power converter 8; an internal condition setter 10 which sets the internal operation conditions concerned with the operation of the device; a receiving circuit 11 which receives the waiting command W1 from a master device 7; an operation starting circuit 12 which performs the logical product operation between the operation start command S from the master device 7 and the internal operation conditions IC set with the internal condition setter 10, and sends an operation start signal SS when it fulfills the AND condition; a gate block circuit 13 which performs the AND operation between the waiting command W1 from the receiving circuit 11 and the gate block condition GC set with the gate block condition setter 9, and sends a gate block signal GS when it fulfills the AND condition; and an element control circuit 14 which supplies each of semiconductor elements for power with control signals, based on the output signals from the operation starting circuit 12 and the gate block circuit 13.

97. 发明专利

JP2614292B2 失效
公开(公告)号：JP2614292B2
公开(公告)日：1997-05-28
申请号：JP30595588
申请日：1988-12-05
IPC分类号： H02P23/00 , H02P21/34 , H02P21/36 , H02P23/07 , H02P7/52 , H02P7/36

98. 实用新型

JPS622398U 失效
公开(公告)号：JPS622398U
公开(公告)日：1987-01-08
申请号：JP9320285
申请日：1985-06-20
IPC分类号： H02P23/00 , H02P21/22 , H02P23/07 , H02P27/02 , H02P7/52 , H02P7/63

99. 实用新型

JPS5532662U 失效
公开(公告)号：JPS5532662U
公开(公告)日：1980-03-03
申请号：JP11541478
申请日：1978-08-23
IPC分类号： H02P23/00 , H02P23/07 , H02P7/52

100. 实用新型

JPS5343442Y2 失效
公开(公告)号：JPS5343442Y2
公开(公告)日：1978-10-19
申请号：JP1658972
申请日：1972-02-09
IPC分类号： H02P1/44 , G05D17/00 , G05D17/02 , G06C23/00 , H02K17/30 , H02P1/42 , H02P7/00 , H02P21/34 , H02P25/026 , H02P25/04 , H02P27/02 , H02P29/00 , H02P7/52

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