BRAKING ENERGY RECOVERY SYSTEM AND METHOD FOR ELECTRIC MOTOR

摘要

FIELD: electrical engineering.;SUBSTANCE: invention relates to electrical engineering and can be used in devices powered by batteries. System (50) for braking energy recuperation for electric motor (62) comprises first controller (52), energy storage device (54), second controller (56), sensor (60) and controller (58). First controller (52) generates DC link voltage to energy storage device (54). Second controller (56) is connected to the energy storage device and outputs the drive signal to motor (62). Sensor (60) detects operating characteristic of electric motor. Controller (58) supplies to first controller signal (74) of energy control, which contains variable in time signal in function of (i) engine speed and/or (ii) reverse EMF determined by detected characteristic, wherein first controller (52) is dynamically regulates DC link voltage, in order to maintain substantially constant energy balance, which contains sum (a) rotary and/or linear kinetic energy of electric motor and (b) energy stored in energy storage device.;EFFECT: technical result is higher efficiency and reliability of system operation.;15 cl, 7 dwg