Voltage compensating circuit for a sensorless type DC brushless motor
    1.
    发明授权
    Voltage compensating circuit for a sensorless type DC brushless motor 有权
    无传感器直流无刷电机的电压补偿电路

    公开(公告)号:US07148639B2

    公开(公告)日:2006-12-12

    申请号:US11316915

    申请日:2005-12-27

    IPC分类号: H02P6/18

    CPC分类号: H02P6/182

    摘要: A compensating circuit for compensating the terminal voltage on the armature in a sensorless type DC brushless motor apparatus is described. The driving circuit of the motor apparatus outputs a three-phase power, and each phase is connected with a compensating circuit. The compensating circuit has a reference voltage, a resistance device, a diode device, a differential amplifier and a processor. The two terminals of the resistance device are respectively connected to the reference voltage and the anode of the diode device. The cathode of the diode device is connected to an output of the three-phase power supply. The two input terminals of the differential amplifier are respectively connected to the two terminals of the resistance device. The processor accepts the signal output from the differential amplifier and then calculates and outputs a compensating voltage.

    摘要翻译: 描述了用于补偿无传感器型DC无刷电动机装置中的电枢上的端子电压的补偿电路。 电机装置的驱动电路输出三相电源,各相与补偿电路连接。 补偿电路具有参考电压,电阻器件,二极管器件,差分放大器和处理器。 电阻器件的两个端子分别连接到二极管器件的参考电压和阳极。 二极管器件的阴极连接到三相电源的输出端。 差分放大器的两个输入端子分别连接到电阻器件的两个端子。 处理器接受来自差分放大器的信号输出,然后计算并输出补偿电压。

    Voltage compensating circuit for a sensorless type DC brushless motor

    公开(公告)号:US20060145641A1

    公开(公告)日:2006-07-06

    申请号:US11316915

    申请日:2005-12-27

    IPC分类号: H02P7/06

    CPC分类号: H02P6/182

    摘要: A compensating circuit for compensating the terminal voltage on the armature in a sensorless type DC brushless motor apparatus is described. The driving circuit of the motor apparatus outputs a three-phase power, and each phase is connected with a compensating circuit. The compensating circuit has a reference voltage, a resistance device, a diode device, a differential amplifier and a processor. The two terminals of the resistance device are respectively connected to the reference voltage and the anode of the diode device. The cathode of the diode device is connected to an output of the three-phase power supply. The two input terminals of the differential amplifier are respectively connected to the two terminals of the resistance device. The processor accepts the signal output from the differential amplifier and then calculates and outputs a compensating voltage.

    Reciprocating and rotary magnetic refrigeration apparatus
    3.
    发明授权
    Reciprocating and rotary magnetic refrigeration apparatus 失效
    往复式旋转磁式制冷装置

    公开(公告)号:US06935121B2

    公开(公告)日:2005-08-30

    申请号:US10726553

    申请日:2003-12-04

    IPC分类号: F25B21/00

    摘要: A reciprocating and rotating magnetic refrigeration apparatus adopts a dynamo concept and the design of magnetic supply path and heat transfer unit to alternately magnetize and demagnetize a magnetocaloric material to generate thermo-magnetic effect for cooling. The apparatus includes magnetocaloric material located on the head of stator nose poles, magnetic supply coils surrounding the magnetocaloric material, permanent magnets located on a rotating stator, and a heat transfer unit in contact with the magnetocaloric material. Two adjacent magnetocaloric materials magnetize and demagnetize alternately to alter the temperature and entropy of the magnetocaloric material, and through the heat transfer unit, heat exchange occurs between the magnetocaloric materials and the atmosphere to achieve the cooling effect.

    摘要翻译: 往复式和旋转式磁性制冷装置采用发电机概念和磁力供应路径和传热单元的设计,以交替磁化和磁化磁热材料,以产生用于冷却的热磁效应。 该装置包括位于定子鼻极头部的磁热材料,围绕磁热材料的磁性供应线圈,位于旋转定子上的永磁体和与该磁热材料接触的传热单元。 两个相邻的磁热材料交替磁化和消磁以改变磁热材料的温度和熵,并且通过传热单元,在磁热材料和大气之间发生热交换以实现冷却效果。