System for contactless transmission of energy from a primary winding to a vehicle comprising a secondary winding that can be inductively coupled to the primary winding, method for detecting metal pieces in the system, method for positioning a vehicle, method for determining a direction and positioning control method

摘要

System for the contactless transmission of energy from a primary winding to a vehicle comprising a secondary winding that can be inductively coupled to the primary winding, the primary winding being arranged in a stationary manner and being able to be supplied with an alternating current, wherein a winding arrangement is arranged in a stationary manner, which has a first and a second winding, the windings each having a center tap, the winding arrangement being arranged in the middle of the primary winding, the first and second winding each being composed of at least two partial windings, the surfaces wrapped by the partial windings of a respective winding being exposed to a magnetic flux generated by the primary winding and are spaced apart from one another in such a way that they are not jointly traversed by any flux line of the flux generated by the primary winding, the partial windings each having such a number of windings and such a wrapped area indicate that the voltages of the partial windings induced by the magnetic flux of the primary winding are of the same magnitude, the first winding being arranged rotated relative to the second winding in such a way that each partial winding of the first winding is arranged inductively coupled to each partial winding of the second winding, the second winding being arranged for first winding is arranged rotated by 90 °.