DC Motor System for Car Battery: Can I Achieve Inexpensively?

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SUMMARY

The discussion centers on the feasibility of running a DC motor powered by a 12-volt car battery to achieve similar performance to a single-phase AC motor system operating at 2980 RPM, 5.6 amps, and 50 Hz. It is established that a 1 horsepower motor requires approximately 746 watts, which translates to a current draw exceeding 60 amps at 12 volts. This significant draw would deplete the car battery rapidly, potentially causing damage. The suggestion of using an inverter for the original AC system was also raised but not elaborated upon.

PREREQUISITES
  • Understanding of AC and DC motor specifications
  • Knowledge of electrical current and voltage relationships
  • Familiarity with battery capacity and discharge rates
  • Basic principles of using inverters in electrical systems
NEXT STEPS
  • Research the specifications and limitations of 12-volt car batteries
  • Explore alternatives for running a 1 horsepower motor efficiently
  • Learn about inverter types and their applications for motor systems
  • Investigate battery management systems to prevent damage during high current draws
USEFUL FOR

Electrical engineers, automotive enthusiasts, and hobbyists interested in motor systems and battery applications will benefit from this discussion.

seamuscostello
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Hi, I have a single phase ac motor system currently working at 2980rpm, 5.6 amp, 50 hz, 240v, efficiency 87% giving approx 1 horse power.

Can I have a similar powered dc motor run off a 12 volt car battery. Can this be achieved inexpensively?

Could I use an inverter for original system? Any info/suggestions appreciated.
 
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Hi seamuscostello! http://img96.imageshack.us/img96/5725/red5e5etimes5e5e45e5e25.gif

One horsepower is 746 watts. At 12v that equates to drawing well over 60 amps from your battery. Your battery will be flat within a minute or two, and probably damaged. Sorry, it was a good plan though.

How long would you be needing to run a 1 hp motor before recharging the batteries?
 
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