OPTIMIZED COOLING SYSTEM FOR A BRUSHED ELECTRICAL MACHINE, AND A CORRESPONDING METHOD

摘要

A cooling system for a brushed electrical machine (1) comprises a cooler configured to cool down a rotor (6) and a commutator (8) of the machine (1). There is a controller (22) configured to adjust the cooling effect of the cooler in response to monitored rotor and commutator temperatures. The cooler may comprise a fan and an auxiliary motor (3) configured to rotate the fan (2).