Is it Possible to get over 90% efficiency from a servo motor

  • Thread starter Fizzics
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  • #1
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Main Question or Discussion Point

....If so what would the highest figure be whilst running a 1kw (single or 3 phase) motor under normal conditions also would using a 10:1 Gearbox change that efficiency level?
 
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Answers and Replies

  • #2
Hesch
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Yes, it is possible: Use a 3 phase synchronous motor with sinusoidal commutation, and control cos φ carefully. Cos φ shall not be exactly 1.0, but close to. The value depends on the motor.

You must use a digital voltage controller, that reads the angular position of the rotor by means of an encoder.

Of course a gearbox will change the efficiency: No gearbox has an efficiency = 100%
 
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  • #3
Nidum
Science Advisor
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The efficiency of most types of servo motors actually used for servo positioning and similar applications is often quite low .
 

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