How does the IMV ECO System adjust the field power?
The IMV ECO-system controls the field current between 0% and 100%, using a power converter with a control switching frequency of over 20kHz.
The result is that the field power is fully variable between a minimum value (0%) and the nominal value (100%) and due to the high switching frequency of the power converter, no ripple resulting from adjusting the field current can appear on the armature.
The high switching frequency also allows the field current to change quickly from one operating point to another.
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