| 摘要 |
<p>The invention relates to a method and a device for forming machine currents (iw, ip, im) in a converter-fed rotating field machine (10) as a function of a measured intermediate-circuit current (id). According to the invention, the measured intermediate-circuit current (id) is integrated over times during which either any desired or a specific active voltager vector (u1,...u6) is set by means of a combination of switched-on converter valves (T1,...,T6) of the pulse-controlled invertor (8). In this way, the active current (iw) and two currents (ip, im) of the rotating field machine (10) can be simulated, the positive current (ip) being formed from positive phase currents (iR, iY, iB) and the negative current (im) from negative phase currents (-iB, -iR, -iY), and it being possible to form these currents from the knowledge of the angle ( gamma ) of the rotating voltage space vector (u*) into continuous phase currents (iR, iY, iB). <IMAGE></p> |
