Inductive coupling system with capacitive parallel compensation of the mutual self-inductance between the primary and the secondary windings
First Claim
Patent Images
1. An inductive coupling system comprising:
- a magnetizable core with a primary yoke provided with a primary winding for connecting a primary AC voltage; and
a secondary yoke provided with a secondary winding, the primary yoke and secondary yoke having corresponding end surfaces for magnetic energy transfer between the primary yoke and the secondary yoke, the inductive coupling system including means for capacitive parallel compensation of a mutual self-inductance of the coupling system at the frequency of the primary AC voltage, the means for capacitive parallel compensation including an auxiliary winding which is arranged near at least one of said end surfaces, to which said auxiliary winding a capacitor is connected which resonates with the auxiliary winding at the frequency of the primary AC voltage.
1 Assignment
0 Petitions
Accused Products
Abstract
To improve the performance of an inductive coupling system, the magnetic coupling between the primary (4) and secondary (8) windings is increased by adding auxiliary windings (26,28) on the primary (2) and/or secondary (6) yokes of the assembly near the air gap (18) between the yokes. Capacitors (30,32) are connected to the auxiliary windings (26, 28) which, together with the inductance of the auxiliary windings, resonate at the operating frequency of the primary AC voltage (Vp). The effect is an improved magnetic coupling between the primary and secondary windings (4, 8) without increasing the size of the magnetic assembly.
-
Citations
8 Claims
-
1. An inductive coupling system comprising:
-
a magnetizable core with a primary yoke provided with a primary winding for connecting a primary AC voltage; and
a secondary yoke provided with a secondary winding, the primary yoke and secondary yoke having corresponding end surfaces for magnetic energy transfer between the primary yoke and the secondary yoke, the inductive coupling system including means for capacitive parallel compensation of a mutual self-inductance of the coupling system at the frequency of the primary AC voltage, the means for capacitive parallel compensation including an auxiliary winding which is arranged near at least one of said end surfaces, to which said auxiliary winding a capacitor is connected which resonates with the auxiliary winding at the frequency of the primary AC voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
the combination is provided with the inductive coupling system of claim 2;
the primary yoke and the primary winding are accommodated in the stand; and
the secondary yoke and the secondary winding are accommodated in the rechargeable appliance.
-
Specification