INDUCTIVE ROTARY JOINT

摘要

An inductive power transfer circuit comprises an inductive rotary coupling with a primary side rotatably arranged a secondary side. The primary side has a primary winding and the secondary side has at least two secondary windings. The secondary windings deliver a signal with the same phase and are connected at one end to a pair of capacitors, being further connected to a positive output and a negative output. The other ends of the secondary windings each are separately connected to a pair of rectifiers connected in forward direction to the positive output and in reverse direction to the negative output.;By paralleling multiple secondary windings and rectifier circuits, the stray inductances and capacitances can be reduced which further leads to a reduced base load which helps to reduce total energy consumption of the circuit.

主权项

1. An inductive power transfer circuit comprising at least an inductive rotating coupler having a primary side rotatably arranged against a secondary side,the primary side comprising at least one primary winding,the secondary side comprising at least a first secondary winding and a second secondary winding,
wherein said at least a first secondary winding and a second secondary winding have the same number of turns and are oriented to produce output voltages with the same amplitudes and phases, and have first winding outputs and second winding outputs, wherein the second winding outputs are connected together and are further connected to a first capacitor and a second capacitor, the first capacitor being connected to a positive output and the second capacitor being connected to a negative output, wherein each of the first winding outputs is independently connected by a first rectifier in a forward direction to the positive output and by a second rectifier in a reverse direction to the negative output, and wherein the first capacitor and the second capacitor are dimensioned as part of the total resonance capacitance of a series resonance converter.