Methods and apparatus for mounting a motor controller on a stator assembly

An electric machine comprising:

• a motor comprising:
• a motor chassis comprising a first end shield and a second end shield;
• a stator assembly;
• and
• a rotor assembly;
• a motor control assembly comprising a circuit board, said motor control assembly coupled to said stator assembly;
• a mounting adapter comprising a ring segment and a mounting guide, said ring segment comprising a first side, a second side, and a plurality of flexible snap latches extending from said first side, said plurality of flexible snap latches operable for retaining said circuit board in position with respect to said mounting adapter, said second side configured for engagement with said stator assembly, said mounting adapter operable for maintaining a position of said circuit board with respect to said stator assembly, wherein said mounting guide is configured to align said mounting adapter with one or more of said stator assembly, said motor control assembly, and said motor chassis, said mounting guide comprises a straight chord segment that intersects said ring segment at two points;
• and
• a mid-shield coupled to said motor chassis and spaced axially from an end shield of said motor, said mid-shield comprising a first opening configured to facilitate a cooling air stream to pass therethrough to cool said motor and said motor control assembly.

An electric machine comprising:

• a motor comprising:
• a motor chassis comprising a first end shield and a second end shield;
• a stator assembly;
• and
• a rotor assembly;
• a motor control assembly comprising a circuit board, said motor control assembly coupled to said stator assembly;
• and
• a mounting adapter comprising a ring segment and a mounting guide, said ring segment comprising a first side, a second side, and a plurality of flexible snap latches extending from said first side, said plurality of flexible snap latches operable for retaining said circuit board in position with respect to said mounting adapter, said second side configured for engagement with said stator assembly, said mounting adapter operable for maintaining a position of said circuit board with respect to said stator assembly, said mounting adapter is ring shaped, wherein said mounting guide is configured to align said mounting adapter with one or more of said stator assembly, said motor control assembly, and said motor chassis, said mounting guide comprises a straight chord segment that intersects said ring segment at two points.