Patent ID: 8134271

Claim:
An electric motor with an adaptive winding network comprising: a plurality of winding elements electrically connected to form a winding array, the winding array having one or more parallel winding units each having one or more identical series-connected winding elements energizable by a power source; wherein the winding array is configurable to form a winding array with a small number of parallel winding units with a small number of winding elements connected in series in each of the parallel winding units to allow the electric motor to work at high speed and low output torque condition with high efficiency; the winding array is further configurable with a large number of parallel winding units and with a large and identical number of winding elements connected in series in each of the parallel winding units to allow the electric motor to work at low speed and high output torque condition with high efficiency; and the winding array is further configurable with a large number of parallel winding units with a small number of series winding elements in each of the parallel winding units to allow the electric motor to work at very low speed and very high output torque condition with high efficiency.