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公开(公告)号：EP3393033B1
公开(公告)日：2019-04-17
申请号：EP17196746.6
申请日：2017-10-17
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公开(公告)号：EP3393033A1
公开(公告)日：2018-10-24
申请号：EP17196746.6
申请日：2017-10-17
CPC分类号： H02M5/27 , H02M5/293 , H02P21/16 , H02P23/14 , H02P25/062
摘要： A matrix converter 1 includes a power converter circuit 10 connectable on one side thereof with an alternating-current supply via a high-frequency filter 15 and connectable on another side thereof with an alternating-current motor 3, a snubber circuit 21 connected with a one-side line 4 for connecting the high-frequency filter 15 and the power converter circuit 10, a discharge switch 27 discharging a charge accumulated in the snubber circuit 21 depending on a voltage of the snubber circuit 21, a test control module 44 controlling the power converter circuit 10 on the basis of a carrier frequency in test such that a test voltage is applied to the alternating-current motor 3, a carrier frequency setting module 51 changing the carrier frequency in test on the basis of an operation state of the discharge switch 27, and a constant determining module 45 determining constants of the alternating-current motor 3 on the basis of a response state of the alternating-current motor 3 at the time when the test voltage is applied.
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公开(公告)号：EP4383554A1
公开(公告)日：2024-06-12
申请号：EP21951942.8
申请日：2021-07-30
摘要： Provided is a motor control device to which a sensor input circuit having a low response speed can be applied. The motor control device includes a first magnetic pole position detection unit, a second magnetic pole position detection unit, and a control unit. The first magnetic pole position detection unit detects a position of a magnetic pole before a start of rotation of a rotor having the magnetic pole in response to a detection result of a magnetic pole sensor. The second magnetic pole position detection unit detects the position of the magnetic pole of the rotor in accordance with a current driving the rotor and flowing through a plurality of drive windings. The control unit performs control of starting the rotation of the rotor in response to a detection result of the first magnetic pole position detection unit and control of rotating the rotor after the start of rotation in response to a detection result of the second magnetic pole position detection unit.
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