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    • 81. 发明授权
    • Brushless d-c motor system
    • 无刷d-c电机系统
    • US4374347A
    • 1983-02-15
    • US241059
    • 1981-03-06
    • Rolf Muller
    • Rolf Muller
    • H02K29/08H02P6/14H02K29/02
    • H02K29/08H02P6/14
    • To provide for efficient operation and recuperation of stored inductive energy in a pulse-operated motor, a preferably bifilar winding (20, 21; 20', 21') has its respective strands or filaments energized by complementary transistors (57, 58; 69, 75; 80, 81) which have reversely polarized free-wheeling diodes (59, 60; 80", 81") connected thereacross. A coupling capacity (47) is connected between the junctions of the respective transistors and the associated winding so that, upon turn-off of a transistor, as controlled by a rotor position sensor, such as a Hall generator (25), stored electromagnetic energy is coupled to flow through the free-wheeling diode of the transistor then to be connected, to be returned to a d-c source, such as a battery (34) or stored in a storage capacitor (45). The output signal from the rotor position sensor is in binary, high-low form, which can control the complementary transistors.
    • 为了提供在脉冲操作的电动机中存储的感应能量的有效操作和恢复,优选双线圈(20,21; 20',21')具有由互补晶体管(57,58; 69, 75; 80,81),其具有连接在其上的反向极化续流二极管(59,60; 80“,81”)。 耦合容量(47)连接在相应晶体管和相关联的绕组的结之间,使得在晶体管截止时,由诸如霍尔发生器(25)的转子位置传感器控制,存储电磁能 被耦合以流过晶体管的续流二极管然后被连接,以被返回到直流源,例如电池(34)或存储在存储电容器(45)中。 来自转子位置传感器的输出信号为二进制,高低电平,可控制互补晶体管。
    • 83. 发明授权
    • Brushless D-C motor
    • 无刷D-C电机
    • US4125792A
    • 1978-11-14
    • US576650
    • 1975-05-12
    • Fritz Schmider
    • Fritz Schmider
    • H02K29/00H02K29/08H02K3/04H02K29/02
    • H02K29/08
    • A preferably axial air gap motor has coreless armature stator windings and a permanent magnet rotor. Sensors, such as Hall generators, are provided to sense the rotary position of the rotor and control switching of current to the respective armature windings. The stator armature windings have a maximum of two magnetically active coil sections per pole of the multi-polar rotor, preferably arranged as flat round coils located on the stator in diametrically arranged configuration, the angular spacing between imaginary diametrical lines through the coils being, however, non-uniform over the rotor circumference, and matched to the spacing of rotor poles, the larger angular gaps between the coils providing space on the stator for the sensors and electronic circuitry. In a preferred embodiment, the rotor has numbers of poles divisible by eight.
    • 优选的轴向气隙电动机具有无芯电枢定子绕组和永磁转子。 提供诸如霍尔发生器的传感器以感测转子的旋转位置并控制电流切换到各个电枢绕组。 定子电枢绕组在多极转子的每极上最多具有两个磁性有效的线圈部分,优选地以直径布置的形式布置成位于定子上的平坦的圆形线圈,然而,通过线圈的虚拟直径线之间的角距离是 在转子圆周上不均匀,并且与转子磁极的间隔相匹配,线圈之间较大的角间隙为传感器和电子电路在定子上提供空间。 在优选实施例中,转子具有可以被八除的极数。