Electric vehicle electric drive system

• Main Authors: Kozarekar, Shailesh Shrikant, Syed, Fazal Urrahman
• Format: Patent
• Language: English
• Published: 13.11.2018
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROL OR REGULATION THEREOF; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; TRANSPORTING; VEHICLES IN GENERAL

A vehicle may include an inverter, a motor coupled to the inverter, and a traction battery coupled to the inverter and having a terminal voltage equal to a rail voltage between rails of the inverter such that the rail voltage is unregulated. The vehicle may also include a voltage converter configured to reduce the terminal voltage below an intermediate bus voltage threshold on an intermediate bus, and an auxiliary converter configured to draw power from the intermediate bus to supply auxiliary loads.