Control of Petersen Coils

Theoretical Electrical Engineering August / 2001 Page 1 / 7 Abstract--In this paper we present a new method for the control of Petersen coils in resonant grounded networks. The major problem for the tuning at small neutral-to-earth voltages is to distinguish between resonance points simulated by the disturbances and real resonance points. In addition the controller has to recognize network modifications during the tuning operation. The first part of this contribution is a short description of the essential parameters that define the resonance curve. The second part deals with the disturbances at very small neutral-to-earth voltages. In consideration of these disturbances a new algorithm is presented to improve the accuracy of the tuning operation of the Petersen coil.