The electrically variable transmission family of the present invention
provides low-content, low-cost electrically variable transmission
mechanisms including first and second differential gear sets, a battery,
three electric machines serving interchangeably as motors or generators
and up to three brakes. The three motor/generators are operable in a
coordinated fashion to yield an EVT with a continuously variable range of
speeds (including reverse). One of the brakes enables series hybrid
operation.