e-Learning in electrical engineering

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Electromagnetic conversion Rotating field machines Synchronous machine Asynchronous machine MCQs
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Asynchronous machine

Electromagnetic conversion
Magnetic and electromagnetic circuits
The modeling of a speaker
Variable reluctance machine
 

Rotating field machines
Principles
Rotating field
Realization of a sinusoidal winding
 

Synchronous machine
Parameters measuring
Autonomous operation
Grid connection
Voltage adjustment
 

Asynchronous machine
Realization and operation principles
Realization
Operation
Setting in equation
General equations, equivalent diagrams
Measurement of the equivalent diagram parameters
Dynamic regime - Park transformation
Operation characteristics
Eficiency and power factor
Mechanical characteristics
Determining the mechanical characteristics
Starting, speed adjustment and braking
Starting
Speed adjustment
Braking
Applications of the command methods
U/f command
Principle
Speed adjustment
Vectorial command
Principle
Influence of the inverter type
The influence of parameters' changes
Direct Torque Control
Principle
Speed adjustment
 

Tests
General theory
Rotating field
Synchronous machine
DC machine

Lectures

Virtual laboratory

 

In this section, the first lesson will present the operation characteristics (efficiency, power factor). Then, the mechanical characteristics of the asynchronous machine will be presented

In this lesson, the mechanical characteristics will be defined and the analytical expressions will be obtained. The influence of the different parameters will be highlighted.

A virtual laboratory is then proposed:

Determining of the mechanical characteristics

In this virtual laboratory, the mechanical characteristics of the asynchronous machine will be obtained.

 

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Last update: 2005, September, 30 | Translation: Sergiu Ivanov | Realization: Florin Ravigan, Cristian Vladu