What type of electric motor is beter?

In summary, the conversation discusses the most compact and powerful type of electric motor in the 70 kW range, and the possibility of creating an even more powerful and compact low-voltage DC motor. The application for this type of motor is unclear, but it is noted that electric vehicles typically use synchronous AC motors with a voltage over 500 V and high-voltage hybrids require a special license and bulky equipment. The conversation also mentions the potential benefits of using smaller, lower voltage motors for electric cars, such as increased safety and ease of handling.
  • #1
Stanley514
411
2
What type of electric motor is most compact and powerfull for its size (in 70 kW range)?
Is there some hope that very powerful, compact, cheap, low voltage DC motor will be ever created?
 
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  • #2
I'm not sure what you're asking. Electric motors really aren't that expensive and are very efficient. Typically, physical size is not a very important consideration. What is the application?
 
  • #3
Low voltage @70kW? What about the current?
 
  • #4
What is the application?
`
Electric vehicles suppose to have very compact and powerful motors for their size and be cheap because there is expansive battery and inventer yet.To work on high-voltage hybrid you need to have special license and bulky equipment.Currently Toyota Prius uses regulary
synchronous AC motor.Voltage is over 500 V.Is there some motors in development which could be even smaller then present AC motors and which could use lower voltage at higher current?It will make electric car safer and easier to handle.Maybe stepper motor or something similar?
 

1. What is the difference between AC and DC motors?

AC (alternating current) motors use alternating current to power the motor, while DC (direct current) motors use direct current. AC motors are typically used in household appliances, while DC motors are used in electronics and small machines.

2. Which type of motor is more efficient?

It depends on the application. AC motors are generally more efficient at high speeds, while DC motors are more efficient at low speeds.

3. Can I use an AC motor with a DC power source?

No, AC motors require an AC power source to function properly. Attempting to use an AC motor with a DC power source can damage the motor.

4. Are there any environmental considerations when choosing between AC and DC motors?

Yes, AC motors are typically more environmentally friendly as they do not require the use of rare earth metals, which are often used in DC motors.

5. Which type of motor is better for variable speed control?

DC motors are typically better for variable speed control as they can easily be controlled by adjusting the voltage.

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