Liquid cooled high efficiency permanent magnet machine with in slot glycol cooling

[0031]Referring particularly to FIG. 1, a rotor 3 is shown surrounded by a stator lamination 1 and stator coils 2. Also shown is a fluid manifold 4 for supplying coolant to the motor or generator.

[0032]FIG. 2 shows more detail on the rotor configuration showing magnets 5 and tab pole plates 6a and 6b. This rotor configuration is the same as shown in the two patent applications Ser. No. 13 / 438,792 and Ser. No. 13 / 438,803 filed on Apr. 3, 2012, and each incorporated herein by reference.

[0033]The stator shown in FIG. 3 has a double layer concentrated winding since there is a winding around every stator tooth. In addition, the stator winding has an inner portion 7 and an outer portion 8 as shown in FIG. 3 and FIG. 4. The inner and outer portions are separate and distinct from this being a double layer winding which refers to there being a winding around every stator tooth.

[0034]The winding surrounds a cooling manifold 9 as shown in FIG. 4. There are 2 redundant coolant loops denoted as