AC Drive Energy Recovery

When a motor is braking, AC drive energy recovery systems feed energy back into the grid rather than dissipating braking energy into heat. Power efficient green energy AC drives are enabled by a high efficiency DC/AC three-phase fast switching isolated power stage with accurate current/voltage sensing. Depending on the grid voltage the AC drive energy recovery system requires basic to reinforced isolation with high EMC immunity. The following TI solutions are available to help solve these system design challenges:

• Basic and reinforced capacitive isolation technology with industry leading CMTI, lowest propagation delay and high EMC immunity
• Isolated and non-isolated IGBT/SiC/GaN FET gate driver with high CMTI, lowest propagation delay and built-in protection
• Accurate current and voltage sensing with isolated precision and low-drift delta-sigma modulators and amplifiers for shunt, hall-effect or flux-gate sensors
• Efficient isolated and non-isolated power solutions supporting all typical power supply topologies