Patent ID: 8587226

Claim:
A system for driving loads, the system comprising: a power generator configured to generate at least a first AC voltage; and a first plurality of current balancing devices, each of the first plurality of current balancing devices being configured to receive two currents and balance the two currents; wherein: each of a plurality of loads L 1 through L n is configured to be directly or indirectly coupled to the power generator and is associated with a load current I 1 through I n , respectively, n≧3; and the first plurality of current balancing devices includes: current balancing devices CBD 1 through CBD n−1 , each current balancing device CBD i of the current balancing devices CBD 1 through CBD n−1 being configured to balance the load currents I i and I i+1 , respectively, 1≦i≦n−1; and current balancing device CBD n , the current balancing device CBD n being configured to balance the load currents I 1 and I n ; wherein: the first plurality of current balancing devices includes a second plurality of current balancing devices and a third plurality of current balancing devices; each of the second plurality of current balancing devices is directly or indirectly coupled between the power generator and respective loads associated with the two currents balanced by the current balancing device; and each of the third plurality of current balancing devices is directly or indirectly coupled between a ground voltage and respective loads associated with the two currents balanced by the current balancing device.