Combustor-independent fluidized bed indirect gasification system

    公开(公告)号:US10533143B2

    公开(公告)日:2020-01-14

    申请号:US15324371

    申请日:2015-02-10

    Abstract: The present invention relates to a combustor-independent fluidized bed indirect gasification system for technology for obtaining high quality synthetic gas through effective indirect gasification of low quality fuels, such as biomass/waste/coal, having various properties, and provides a combustor-independent fluidized bed indirect gasification system comprising: a pre-processor having a sorter 500; a gasifier 300 to which a first fuel sorted in the pre-processor is supplied; a combustor 100 to which a second fuel sorted in the pre-processor is supplied; and a riser 200 connecting the gasifier 300 and the combustor 100 and having functions of increasing the temperature of a bed material and transferring the bed material therein.

    Apparatus and method for controlling permanent magnet motor

    公开(公告)号:US10135373B2

    公开(公告)日:2018-11-20

    申请号:US15320354

    申请日:2014-12-29

    Abstract: An apparatus and a method for controlling a permanent magnet motor are provided. An apparatus for controlling a permanent magnet motor, according to an embodiment of the present invention, comprises: a current control unit for generating a control current so as to drive a motor according to an initial set current or a current corresponding to an estimated magnetic flux; a motor driving unit for driving the motor according to the control current of the current control unit; a measurement unit for measuring a driving voltage and current of the motor; and a magnetic flux estimation unit preliminarily driving the motor with the initial set current or the current corresponding to the estimated magnetic flux, so as to estimate the magnetic flux of the motor on the basis of the current measured when the motor is preliminarily driven and a voltage model of the motor according to the measured voltage, and adaptively controlling the magnetization current or demagnetization current of the motor such that the estimated magnetic flux is within an error range.

Patent Agency Ranking