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METHOD FOR THE CONTROLLED APPLICATION OF A STATOR-CURRENT TARGET VALUE AND A TORQUE TARGET VALUE FOR A POLYPHASE MACHINE THAT IS SUPPLIED BY AN ELECTRONIC POWER CONVERTER
METHOD FOR THE CONTROLLED APPLICATION OF A STATOR-CURRENT TARGET VALUE AND A TORQUE TARGET VALUE FOR A POLYPHASE MACHINE THAT IS SUPPLIED BY AN ELECTRONIC POWER CONVERTER
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机译:电子功率转换器提供的多相电机的定子电流目标值和转矩目标值的控制应用方法
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摘要
The invention relates to a method for the controlled application of a stator-current target value (ISnom) and a torque target value (Mnom) for a polyphase machine (4) that is supplied by an electronic power converter. According to the invention: current components (ISdnom, ISqnom) in a co-ordinate system (d, q) with a fixed rotor flux or rotating magnetic pole are calculated in accordance with a torque target value and in asynchronous machines in accordance with a rotor-flux target value (Rnom), a calculated rotor-flux actual value (SBR/SB) or a rotating magnetic-pole flux; a stator-circuit frequency (SBS/SB) is determined; a terminal-flux target value (Knom) is calculated in accordance with the values (ISnom, ISqnom, SBR/SB, SBS/SB) by means of the machine parameters (L, RSBS/SB), said terminal-flux target value being subsequently projected onto a flux-course curve, selected from stored, off-line optimised flux-course curves. This permits the state of the stator current (ISBS/SB) to be regulated in relation to the rotor flux (SBR/SB) or rotating magnetic-pole flux by means of momentary values, facilitating a stationary and dynamic precise control of motor currents (I1,I2,I3) and thus the torques (M) of a polyphase machine (4).
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机译:本发明涉及一种用于由电子功率转换器提供的用于多相电机(4)的定子电流目标值(ISnom)和转矩目标值(Mnom)的受控施加的方法。根据本发明:在坐标系(d,q)中,具有固定的转子磁通或旋转的磁极的电流分量(ISdnom,ISqnom)根据转矩目标值来计算,并且在异步电机中根据转子来计算-磁通目标值(Rnom),计算出的转子磁通实际值( R SB>)或旋转的磁极通量;确定定子电路频率( S SB>);借助于机器参数(L,R <,根据值(ISnom,ISqnom, R SB>, S SB>)计算最终通量目标值(Knom) SB> S SB>),随后将最终磁通目标值投影到磁通曲线上,该曲线选自已存储的离线优化磁通曲线。这样就可以通过瞬时值相对于转子磁通( R SB>)或旋转磁极通量来调节定子电流(I S SB>)的状态,有利于对电动机电流(I1,I2,I3)以及因此多相电机(4)的转矩(M)进行静态和动态的精确控制。
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