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Optimizing Single-Phase 0.55 kW Motor Speed Control for 0.5m Diameter Machine Tool Wheel

Robot17 12339 10
Best answers LABEL_AI_GENERATED

Why does my 0.55 kW motor slow down, buzz, and then suddenly overspeed when I try to regulate it with this controller, and how should I control its speed properly?

This controller is a phase power regulator, so it is not a proper speed controller; with changing load the motor will slow down, buzz, and then suddenly run too fast [#16542279][#16537512] For precise speed control, the thread recommends switching to a DC motor with PWM or to a 3-phase motor with inverter control [#16537512][#16542279][#16542915] If you want to keep the existing motor, a feedback system is needed rather than open-loop power control [#16538090] One reply points to AVT kit 422 as a possible feedback-based solution [#16538090][#16542915] The discussion also notes that speed control depends on the motor type, and brushed motors are controlled differently from brushless ones [#16537617][#16537723]
AI summary based on the discussion. May contain errors.
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  • #1 16537502
    Robot17
    Level 12  
    Posts: 1325
    Rate: 180
    Hello short and about 0.55 kw engine I used this system for speed control but it works imprecisely engine under light load, has a belt attached and turns a large wheel at the machine tool with a diameter of 0.5 meter when trying to change the speed to a smaller engine slowly stops and buzzs when I turn up the volume it starts to hum louder Optimizing Single-Phase 0.55 kW Motor Speed Control for 0.5m Diameter Machine Tool Wheel and turns into a spin but too fast what's going on ..
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  • #2 16537512
    Zbigniew 400
    Level 38  
    Posts: 4356
    Help: 283
    Rate: 794
    This system is not suitable for speed control.
    Change the motor to dc / simple or complicated controller / or 3 phase / inverter control /.
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  • #3 16537604
    Robot17
    Level 12  
    Posts: 1325
    Rate: 180
    Zbigniew, now I also know that the description of this system is not suitable, it is convincing that I can add to the regulation of single-phase motors that without load it fulfills this role.
  • #4 16537617
    niewolno2
    Level 40  
    Posts: 4694
    Help: 628
    Rate: 1258
    But you forgot that among single-phase motors there are commutator and brushless motors, and each of them should have a different speed control, so in a nutshell.
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  • #5 16537723
    Robot17
    Level 12  
    Posts: 1325
    Rate: 180
    This is a brush motor.
    Will such regulator system pass the exam as above?
  • #6 16538090
    Zbigniew 400
    Level 38  
    Posts: 4356
    Help: 283
    Rate: 794
    A feedback system should be introduced.

    Added after 7 [minutes]:

    Read the kit 422 avt
  • #7 16542279
    Szyszkownik Kilkujadek
    Level 37  
    Posts: 5017
    Help: 211
    Rate: 1014
    If you need to control the rotation very precisely, in my opinion it is better to switch to a DC motor and PWM control.

    The system that can be seen in # 1 is a phase power regulator, not a rotation regulator. More suitable for a drill. It is true that speed control by regulating the engine power is, but at varying load works throughout the world.
    With a current engine, no-pressure control makes no sense.
  • #8 16542865
    Robot17
    Level 12  
    Posts: 1325
    Rate: 180
    Zbigniew and is it possible to make feedback in this system ...
  • #9 16542915
    Zbigniew 400
    Level 38  
    Posts: 4356
    Help: 283
    Rate: 794
    Read kit 422 avt

    Added after 18 [minutes]:

    If it is a motor without a commutator, it will be hard.
    As I wrote earlier, a 3 phase or dc motor.
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  • #10 16543032
    kortyleski
    Level 43  
    Posts: 12265
    Help: 957
    Rate: 3860
    Robot17 wrote:
    there is a motor with brushes

    Zbigniew 400 wrote:

    If it is a motor without a commutator, it will be hard.

    Maybe it would be good to start reading instead of writing just for writing?
  • #11 16543147
    Robot17
    Level 12  
    Posts: 1325
    Rate: 180
    Zbigniew thanks .................
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Topic summary

LABEL_AI_GENERATED
The discussion revolves around optimizing speed control for a single-phase 0.55 kW motor used in a machine tool with a 0.5-meter diameter wheel. The user reports imprecise speed control, particularly under light load, where the motor buzzes and struggles to maintain speed. Responses suggest that the current system is inadequate for precise speed control, recommending alternatives such as DC motors with PWM control or three-phase motors with inverter control. The importance of feedback systems is emphasized, particularly for brush motors, as they require different speed control methods compared to other types. The conversation highlights the limitations of phase power regulators in varying load conditions.
AI summary based on the discussion. May contain errors.
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