MOTOR EFFICIENCY ANALYSIS METHOD FOR MOTOR INVERTER
    1.
    发明申请
    MOTOR EFFICIENCY ANALYSIS METHOD FOR MOTOR INVERTER 有权
    电机逆变器的电机效率分析方法

    公开(公告)号:US20160268947A1

    公开(公告)日:2016-09-15

    申请号:US14815385

    申请日:2015-07-31

    CPC classification number: H02P27/06 G01R31/343 H02P23/14 Y02P80/116

    Abstract: The present invention discloses a motor efficiency analysis method for motor inverter. The method can be performed via a real-time motor operation efficiency display device. Based on the measured primary current signal and the voltage provided by the driving device, the device can estimate related data, such as the real-time efficiency, rotational speed, torque and stator resistance, by means of several algorithms. Besides, the device is designed to be applied to most motors; therefore, users can manage the efficiency of all motors of the factory without the need to stop the machines or the manufacturing process.

    Abstract translation: 本发明公开了一种电动机逆变器的电动机效率分析方法。 该方法可以通过实时电动机操作效率显示装置进行。 基于所测量的初级电流信号和由驱动装置提供的电压,装置可以通过几种算法估计相关数据,如实时效率,转速,转矩和定子电阻。 此外,该设备被设计用于大多数电机; 因此,用户可以管理工厂所有电机的效率,无需停止机器或制造过程。

    ASSEMBLY OF LUBRICATION SYSTEM FOR FLUID MACHINERY

    公开(公告)号:US20180128366A1

    公开(公告)日:2018-05-10

    申请号:US15379636

    申请日:2016-12-15

    Abstract: An assembly of a lubrication system for fluid machinery includes a transmission shaft, an oil-injection insulating ring and a labyrinth ring. The transmission shaft defines axially power and passive sides. The power side includes a body unit having first and second bearings. The oil-injection insulating ring located between the first and second bearings sleeves the transmission shaft and connects a fuel-supply looping having outer and inner rings. The outer ring has at least one first hole communicatively connected with the fuel-supply looping. The labyrinth ring having first and second axial ends has outer diameters tapering from the second axial end to the first axial end. The first and second axial ends face the power and passive sides, respectively. A circumference of the labyrinth ring includes circular grooves to form a circumferential step-like structure. The labyrinth ring sleeves the transmission shaft and is embedded into the body unit.

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