Electromagnetic actuators

1
Electromagnetic actuators

• JASS 2006
• Konev Victor
• Course 5
• St-Petersburg
• 11.04.06

2
Content

• Fundamental definitions
• DC engines
• AC engines
• Asynchronous engines
• Synchronous engines
• Step-by-step engines
• AC converter-fed engines
• Concluion

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What the electromagnetic drive is ?

• Electromechanical device intended for
  electrification and automation of working
  processes and consisting of converters,
  electromagnetic engines, transfer and operating
  devices is called an electromagnetic drive.

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Electromagnetic drives

• Types of electromagnetic drives
• Group
• Single
• Multiimpellent

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Group drives
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Drives characteristics

• Group
• low EFFICIENCY
• irrational use of premises
• high traumatism.

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Single drives
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Drives characteristics

• Single
• too high capacity of the engine thats it has low
  EFFICIENCY
• complex kinematics of the machine tool
• installation of connecting couplings is required.

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Multiimpellent drives
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Drives characteristics

• Multiipellent
• has elementary kinematic circuits
• the engine is built in directly into the working
  body
• the maximal EFFICIENCY
• has conditions for independent optimum control of
  the working body.

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Function chart of a electromagnetic drive
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Mechanical and electromechanical characteristics
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Mechanical characteristic and slop
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Types of electromagnetic engines

• DC vs AC

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Direct current engines
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Alternative current engines

• Asynchronous
• electric
• motors

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Asynchronous electric motors
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Operation principle of the asynchronous engine
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Sliding
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The equation of the asynchronous engine
mechanical characteristic
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The equation of the asynchronous engine
mechanical characteristic
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The equation of the asynchronous engine
mechanical characteristic
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The equation of the asynchronous engine
mechanical characteristic
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The mechanical characteristic of the asynchronous
engine
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Voltage fluctuation influence
U
U8.0
0.9U
0.7U
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Alternative current engines

• Synchronous
• electric
• motors

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Synchronous electric motors
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Mechanical characteristic of synchronous engine
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Synchronous engines of special execution.Synchron
ous engines with constant magnets.
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Synchronous engines of special execution.Synchron
ous jet engines.
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How rise up efficiency?
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Synchronous engines of special execution.Slow-mov
ing (geared) synchronous jet engine.
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Synchronous engines of special execution.Slow-mov
ing (geared) synchronous jet engine.
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Synchronous engines of special execution.Synchron
ous hysteresis engine.
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Step-by-step engines.
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Step-by-step engines.
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AC converter-fed engines.
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Conclusion

• Also necessary to know
• Engines modes
• Influence of an engine parameters on its
  characteristics
• Special schemes of the engine inclusion
• Etc.

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Electromagnetic drives

• Thank you for your attention!

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Electromagnetic drives

• Thank you for your attention!
• Storm of applause!)

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Electromagnetic drives

• Thank you for your attention!
• Storm of applause!)
• Oh yeah, have you any question?