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    • 4. 发明授权
    • Apparatus and method for controlling an elevator power supply
    • 用于控制电梯电源的装置和方法
    • US6043999A
    • 2000-03-28
    • US082951
    • 1998-05-21
    • Jurgen EhrenbergZhiping David Fan
    • Jurgen EhrenbergZhiping David Fan
    • H02J3/18H02M7/04
    • H02J3/1828Y02E40/30
    • A digital control in line angle coordinates for a regulated power input device in which the line angle (.epsilon.) is determined from measured line voltages (U1M, U2M) by means of a coordinate transformation of the rotary field, in Cartesian coordinates and subsequent arctan calculation (ATAN). From this, under circumstances of a heavily disturbed line angle (.epsilon.) the line frequency is computed. In this, under circumstances, the strongly varying frequency information is limited to a plausible band of variations before the frequency is filtered and a relatively smooth running line angle (.epsilon.) can be calculated therefrom. In order to avoid an erroneous integration, the calculated line angle integrator is set at every phase-zero-crossing to the corresponding angle value. With this line angle (.epsilon.), which is stable also in the case of line disturbances, the coordinate trnnsformations of the line alternating currents (I1M, I2M) into line angle direct currents (IMD, IMQ) is carried out, as well as the control direct current voltages (UMD.sub.-- REF, UMQ.sub.-- REF), into the pertaining control alternating voltage (U1R.sub.-- REF, U2R.sub.-- REF).
    • 用于经调节的电力输入装置的线角坐标的数字控制,其中通过旋转磁场的坐标变换,以测量的线电压(U1M,U2M)确定线角度(ε),以笛卡尔坐标和随后的计数计算 (晒黑)。 由此,在严重干扰的线角度(ε)的情况下,计算线路频率。 在这种情况下,在这种情况下,在频率被滤波之前,强烈变化的频率信息被限制为可变的变化频带,并且可以从其计算出相对平滑的运行线角度(ε)。 为了避免错误的积分,将计算出的线角积分器设置在与相应的角度值的每个相位过零点。 利用线路角度(ε),其在线路干扰的情况下也是稳定的,线路交流电流(I1M,I2M)的坐标变换成行直角电流(IMD,IMQ),以及 控制直流电压(UMD-REF,UMQ-REF)到相关的控制交流电压(U1R-REF,U2R-REF)中。