用于机电传动系中的旋转轴的扭转变形的确定以及DC链接降级的确定的方法和装置

• Format: Patent
• Language: Chinese
• Published: 27.12.2022
• Subjects: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

本发明的主题是一种用于机电传动系中的旋转轴的扭转变形的确定的方法和装置。根据本发明所述的方法使用传动系的轴（3）的角速度测量和传动电机（1）的电流和电压信号测量并且包括转换器（5）的DC链接单元（10）的电压UDC的测量的步骤；计算传动电机（1）的负荷扭矩Tload的值的步骤；负荷扭矩Tload中的振荡Osc（Tload）的检测和计算DC链接单元（10）的电压UDC的快速傅里叶变换FFT（UDC）的特征频率的量值的步骤；确定针对振荡Osc（Tload）的时间戳指示符tTload以及针对DC链接单元（10）的电压UDC的FFT（UDC）的特征频率的量值的UDC的tFFT的步骤；将所述时间戳指示符tTload和tFFT的值进行比较并且确定如果tTload＜tFFT则是所述旋转轴的扭++转变形的步骤；在诊断单元（6）中将所述比较的结果呈现的步骤。 The subject of the invention is a method and a device for determination of a torsional deflection of a rotation shaft in the electromechanical drivetrain. The method according to the invention uses a current and voltage signals measurement of the driving electrical machine (1) and an angular speed measurement of the shaft (3) of the drivetrain and comprises the step of measuring of a voltage U DC of the DC link unit (10) of a converter (5); the step of calculating a value of a load torque T load of the driving electrical machine (1); the step of detecting of an oscillation Osc(T load ) in the load torque T load and calculation magnitudes of