Self-paced Intermediate

Are Electrical Vehicles really silent ?

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1 enrolled

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FREE

91 min

Anytime

English

MILIND AMBARDEKARConsultant

Automotive

Electrical Engineering

Lifetime access
Certificate of completion
Interactive Video Lessons
Completion Certificate

Volume pricing for groups of 5+

Why enroll

Electrification is a buzz word in Automotive Industries across the world since they drastically reduce the green-house emissions. Overall their motor is much quieter than that of a typical gasoline or diesel engine with absence of intake and exhaust tail pipe noises.

But still are they comfortable from point of total quietness; are they totally vibration free ?

Under heavy torque, electromagnetic forces between stator and rotors create a tonal sound from the motor-train; unless they are controlled, the EV passengers will have a harsh In-cab sound feel inside the cabin at low & mid speeds.

Added to them, tyre/ road noise and wind noise at high speeds will deprive the overall quietness of the EVs if the design rules are not followed. Driveline jerks in regenerative braking are irritating as well.

Large Electric Buses have their own challenges due to larger acoustic cavity resonance and driveline torsional vibrations.

And now EV- racing cars are coming up and vehicle designers are struggling to get their Sportive Sound at par with those of traditional powerful multi-cylinder ICE vehicles

This session should be thus perfect for Managers, Engineers and students eager to understand EV dynamics and make them comfortable against every sound & vibration sources while cruising on road with right countermeasures

Your instructor

MILIND AMBARDEKAR

Self employed

Consultant

34+ yrs experience·India

Is this course for you?

You should take this if

You work in Automotive
You're a Electrical Engineering / Mechanical Engineering professional
You have some foundational knowledge in the subject
You prefer self-paced learning you can revisit

You should skip if

You're looking for an introductory overview course
You need a different specialisation outside Electrical Engineering
You need live interaction with an instructor

Course details

Learn why Electric Vehicles (EVs) aren't as silent as they seem!

This session dives into the unique NVH (noise, vibrations, harshness) challenges posed by electric motors, inverters, transmission, driveline and other auxiliary systems.

Though they are much quieter as compared with their counterparts of ICE [internal combustion engine] vehicles, over a wide frequency range, there is special Tonality induced discomfort to the EV passengers if no proper action is taken during design and development.

Course suitable for

Key topics covered

1. Sound Balance difference between ICE vehicles and EVs at different speeds

2. Electromagnetic whine of motors

3. Transmission forces

4. Driveline dynamics

5. Cooling Fan noise, Battery charging , HVAC

6. Brake Vacuum pump on/off

7. Tyre/ road and wind noise

8. Electric Buses - special challenges for NVH

9. EV -racing cars and their sportive sound

Course content

The course is readily available, allowing learners to start and complete it at their own pace.

2 lectures1 hr 31 min

Opportunities that await you!

Career opportunities

✎ Where this fits — what comes before, what comes next

Are Electrical Vehicles really silent ?