Medium Automotive Engineering Electric Vehicles
Compare Permanent Magnet Synchronous Motors (PMSM) and Induction Motors for EVs.
Answer
PMSM offers higher efficiency (especially at partial load), higher power density, and lower heat generation, making it preferred for most EVs (Tata, Mahindra, Hyundai EVs). However, it requires expensive rare-earth magnets and has efficiency drop at high speeds. Induction motors are more robust, lower cost, and better at high-speed operation (Tesla Model S rear motor), but less efficient at typical driving conditions. Many modern EVs use PMSM for primary drive and induction for secondary.
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