In this chapter will be studied the asynchronous (induction) machine. There will be resented:

• Realization and operation principles
• General operation equations and equivalent diagrams
• Operation and mechanical characteristics
• Clasical command of the drive (starting, speed adjustment and braking)
• Vector control
• Direct Torque Control - DTC.

Virtual laboratories are proposed for:

• Measurement of the equivalent diagram parameters
• Determining the mechanical characteristics
• Applications of the command methods
• The influence of the inverter type in vector control
• The influence of the variation of the parameters in vector control
• Speed regulation with Direct Torque Control