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    • 21. 发明授权
    • Motor coil structure
    • 电机线圈结构
    • US5422526A
    • 1995-06-06
    • US174918
    • 1993-12-29
    • Yasutomo KawabataKaoru KuboTetsuya Miura
    • Yasutomo KawabataKaoru KuboTetsuya Miura
    • H02K3/04H02K3/12
    • H02K3/12
    • A motor coil structure has a lamination of in-slot coils incorporated into slots in a stator core and inter-slot connecting wires individually connecting to the end faces of the in-slot coils. Each of the inter-slot connecting wires is in the form of a bar such that the in-slot coils received in two different slots spaced away from each other by slots equal in number to n-1 (where n is the number of phases). Since the space factor depends on the lamination of in-slot coils in the slot, any clearance in the slot can be eliminated to improve the space factor compared with a motor coil structure in which a coil is formed by binding and winding a plurality of wires.
    • 电动机线圈结构具有并入定子铁芯中的槽中的内槽线圈的层叠,以及分别连接到槽内线圈的端面的槽间连接线。 每个槽间连接线都是条形,使得在两个不同的槽中接收的槽内线圈彼此间隔开数量等于n-1的间隙(其中n是相数) 。 由于空间因素取决于槽中的槽内线圈的层叠,所以与电动机线圈结构相比,可以消除槽中的任何间隙,以便通过将多个线束进行绑扎和缠绕而形成线圈 。
    • 23. 发明授权
    • Stator for electric motor
    • 电动机定子
    • US6072259A
    • 2000-06-06
    • US75222
    • 1998-05-11
    • Yasutomo KawabataTetsuya MiuraRyuji TohMasaru HirakoAkio Fukui
    • Yasutomo KawabataTetsuya MiuraRyuji TohMasaru HirakoAkio Fukui
    • H02K3/38H02K1/12H02K1/00H02K1/06
    • H02K3/38
    • A stator core for a motor in which a member with rounded edges is used to prevent the electrical breakdown of the winding of a coil which may occur at a slot edge therein. End plates 18 are disposed on ends of the stator core 10 formed of laminated magnetic steel plates 12. Each of the end plates 18 has substantially the same pattern as each magnetic steel plate 1, viewed from the axis of the motor. The elongate surface 18a of the end plate 18 continues smoothly from the inner surface 16a of each of slots 16 to the rounded edge surface 18b. The rounded edge surface extends smoothly from the elongate surface 18a to the end surface 18c of the end plate 18. This structure can eliminate sharp edges from the fringe of the slot 16, thus preventing the electrical breakdown of a coated conductor 22 in the coil which may occur at the edges.
    • 一种用于电动机的定子铁心,其中具有圆形边缘的构件用于防止可能在其中的槽边缘处发生的线圈的绕组的电击穿。 端板18设置在由层叠电磁钢板12形成的定子铁芯10的端部上。从马达的轴线观察,每个端板18具有与每个电磁钢板1基本相同的图案。 端板18的细长表面18a从每个槽16的内表面16a平滑地延伸到圆形边缘表面18b。 圆形边缘表面从细长表面18a平滑地延伸到端板18的端表面18c。该结构可以消除来自狭槽16的边缘的尖锐边缘,从而防止线圈中的涂覆导体22的电击穿, 可能发生在边缘。
    • 27. 发明授权
    • Motor control apparatus and method of controlling motor
    • 电动机控制装置及其控制方法
    • US5952810A
    • 1999-09-14
    • US157619
    • 1998-09-21
    • Eiji YamadaYasutomo Kawabata
    • Eiji YamadaYasutomo Kawabata
    • B60L11/14H02P6/18H02P6/20H02P21/00H02P27/04H02P27/06H02P1/46
    • B60L11/1803B60L11/123B60L11/1851B60L15/025B60L15/20H02P6/18H02P6/20B60L2220/14Y02T10/6217Y02T10/643Y02T10/7005Y02T10/705Y02T10/7077Y02T10/72Y02T10/7275
    • The object of the present invention is to provide a technique that detects an electrical angle of a synchronous motor with a high accuracy and adequately controls the synchronous motor even when the synchronous motor is driven under a non-loading condition. The direction that passes through a rotating shaft of the motor and causes a magnetic flux to pass through permanent magnets is defined as a d-axis. Even when the motor is driven under the non-loading condition and no flow of electric currents through windings is required in response to a torque requirement, the method of the present invention applies a voltage to the d-axis, based on an estimated electrical angle. Application of the voltage is realized by switching on and off a transistor inverter with a delay of a dead time. The method solves voltage equations with the applied voltages and the electric currents corresponding to the voltages, and controls the motor while correcting the electrical angle with errors of the arithmetic operations. A dead-time correction is carried out prior to the solution of the voltage equations, based on the direction of the flow of the electric current through the d-axis. This eliminates the effects of the dead time on the switching operations.
    • 本发明的目的是提供一种即使在非负载状态下驱动同步电动机的情况下也能够高精度地检测同步电动机的电角度并充分地控制同步电动机的技术。 通过电动机的旋转轴并使磁通量通过永磁体的方向被定义为d轴。 即使当电动机在非负载状态下被驱动并且响应于转矩要求而不需要通过绕组的电流时,本发明的方法基于估计的电角度向d轴施加电压 。 电压的施加是通过在延迟死区时间来接通和关断晶体管逆变器来实现的。 该方法利用所施加的电压和对应于电压的电流来解决电压方程,并且通过算术运算的误差来校正电角度来控制电动机。 基于电流通过d轴的流动的方向,在解决电压方程之前执行死区时间校正。 这消除了死区时间对切换操作的影响。
    • 29. 发明授权
    • Method of controlling operation of synchronous motor and motor control
apparatus for the same
    • 控制同步电动机和电动机控制装置的运行方法
    • US5969496A
    • 1999-10-19
    • US102356
    • 1998-06-23
    • Eiji YamadaYasutomo Kawabata
    • Eiji YamadaYasutomo Kawabata
    • H02P6/16H02P1/52H02P21/00H02P23/00H02P25/02H02P27/04H02P27/06H02P1/46
    • H02P1/52H02P25/03H02P2203/05
    • At the time of starting a synchronous motor (40), one method of the present invention assumes that the synchronous motor (40) rotates at a revolving speed of not less than a predetermined level, and detects an electrical angle of a rotor (50) according to a first detection process, which has a practical accuracy when the revolving speed of the rotor (50) is not less than the predetermined level (step S120). In case that the electrical angle has not been detected successfully, the method detects the electrical angle of the rotor (50) according to a second detection process, which has a practical accuracy when the revolving speed of the rotor (50) is less than the predetermined level (step S160). Another method first detects the revolving speed of the rotor (50). The method adopts the first detection process to detect the electrical angle when the observed revolving speed is not less than a predetermined level, and adopts the second detection process when the observed revolving speed is less than the predetermined level. Even when the rotor (50) has already been rotated by an external force or inertia at the time of starting the synchronous motor (40), the method enables accurate detection of the electrical angle.
    • 在启动同步电动机(40)时,本发明的一种方法假设同步电动机40以不小于预定水平的转速旋转,并检测转子(50)的电角度, 根据第一检测过程,当转子(50)的转速不小于预定水平时,其具有实际的精度(步骤S120)。 在电角度未成功检测的情况下,该方法根据第二检测过程来检测转子(50)的电角度,当转子(50)的转速小于 预定水平(步骤S160)。 另一种方法首先检测转子(50)的转速。 当观察到的转速不小于预定值时,该方法采用第一检测处理来检测电角度,并且当观察到的转速小于预定水平时采用第二检测处理。 即使当在启动同步电动机(40)时转子(50)已经被外力或惯性旋转时,该方法能够准确地检测电角度。