1 / 17

UC EV3 Update on MR2 Project

EV2. Original EV developed to test motor speed control ideas for AC induction motors. Car Overview. Energy stored in 20 lead acid batteries (36Ah)Nominal 240V DC bus. Electrical Drive. Individual Rear wheel drive - 2 motorsChain Reduction. New Inverter Construction. 6 switch - 2 switches for each phase IGBTs - 1200V, 300A (donated)Single inverter drives 2 motors (2.5kW case size).

ganya
Download Presentation

UC EV3 Update on MR2 Project

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

    1. UC EV3 – Update on MR2 Project Simon Round Dept. Electrical & Electronic Engineering University of Canterbury Feb 2004

    2. EV2 Original EV developed to test motor speed control ideas for AC induction motors

    3. Car Overview Energy stored in 20 lead acid batteries (36Ah) Nominal 240V DC bus

    4. Electrical Drive Individual Rear wheel drive - 2 motors Chain Reduction

    5. New Inverter Construction 6 switch - 2 switches for each phase IGBTs - 1200V, 300A (donated) Single inverter drives 2 motors (2.5kW case size)

    6. Progress WOF obtained on 11 February 1999 Since then travelled over 3400 km No major problems or faults encountered in the drive system More reliable than the previous drive systems Need a modern, higher performance car

    7. EV3 We have purchased a Toyota MR2 Mid engine, good battery placement

    8. EV3 Requirements Design requires good performance what is good performance? Top speed > 100km/h Acceleration 0 - 60 km/h in 7 seconds how much power is required? Over come drag & rolling resistance at 100km/h need approx 21 kW Acceleration requires 40-60 kW

    9. Batteries Lead Acid - can only afford these Higher the DC voltage the lower the current Increases battery number and weight Present car has 20 batteries Increase to 26 batteries Use small 26Ah, 10kg batteries Giving a 312V battery bus

    10. Battery Placement 8 under the bonnet, 12 in boot & 6 in motor bay

    11. Motors High performance & light weight Types of motors - AC induction, DC, Brushless DC, Switched reluctance Stay with AC induction technology Would like a high frequency motor (400 Hz) May have to design a motor in the future We purchased an induction motor

    12. 21kW cont 78kW peak 4k RPM 10k RPM max 61 kg 25cm dia 37cm long

    13. Motor torque characteristic

    14. Power Inverter Using a Semikron SKiiP IGBT block 400A, 600V 6 switches drive & protection circuitry PDL Elite Motor Controller Torque control

    15. Estimated performance

    16. Auxiliary Power Loads

    17. Auxiliary Power Network

    18. Next step Place motor/transmission in MR2 Fine tune control system Battery monitoring and equalisation system monitoring system + equalisation (2 wire CAN) Isolated charging system Get certification for the car!

More Related