Stabilising circuit for an inverse rectifier motor control

Details Stabilising circuit for an inverse rectifier motor control Stabilising circuit for an inverse rectifier motor control

H - Electricity

02

M

318/115

H02M 5/42 (2006.01) H02M 5/45 (2006.01) H02M 7/525 (2006.01) H02M 7/539 (2006.01)

Patent

CA 1213318

Abstract In a stabilising circuit for an inverse rectifier motor control, a genererator is provided for the inverse rectifier frequency that is substantially proportional to a frequency control voltage (Uf). A control circuit depending on the existing voltage of the intermediate circuit leads the frequency control voltage (Uf) to follow a measuring voltage (?m) which is equal or proportional to the existing voltage. The freqency control circuit comprises a frequency dependent filter and is so designed that, with increasing oscillation frequency of the A.C. voltage component, the frequency control voltage (Uf) is corrected in two respects relatively to the measuring voltage (Um): 1. The mean value (?f) of the frequency control voltage is altered relatively to the mean value (?m) of the measuring voltage in the sense of increasing the inverse rectifier frequency. 2. The amplitude of the A.C. voltage component of the frequency control voltage (Uf) is reduced relatively to that of the measuring voltage (Um). Fig. 5.

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