Drives with Industry Frequency Converter, 0.3 kW

VE2.5.3.4
Drives with Industry Frequency Converter, 0.3 kW Drives with Industry Frequency Converter 0.3 (E2.5.3.4)
Drives with Industry Frequency Converter, 0.3 kW Drives with Industry Frequency Converter 0.3 (E2.5.3.4)
Drives with Industry Frequency Converter, 0.3 kW

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Description

The power electronics part of this lab practical uses training panels. The electrical machine employed is an industrial machine on a base, whereby the characteristics of the machine can be determined using the Machine test system 0.3. Power is supplied to the machine under test via an industrial frequency converter, which obtains its power from the normal mains power supply (mains voltage, 230 V).

Objectives

  • Protective measures and electrical safety
  • Set-up of power generating systems according to circuit diagrams
  • Putting electrical drives into operation
  • Recording of load characteristics with various operating parameters
  • Achieving skills in measuring electrical machines
  • Automatic speed control for an asynchronous (induction) machine

Using switchable converter valves, it is possible to set-up three-phase networks with variable frequency and amplitude. The speed of asynchronous (induction) machines is then variable with practically no losses over a broad range. In this lab, machines in the power class 0.3 kW are used. The equipment set includes an industrial compact converter. The experiments focus on putting converters into operation, setting their parameters and investigating machine response.

Students work in the power engineering lab with mains voltage. Experiments procedures are contained in a printed manual.

The experiments are designed for intermediate and advanced levels.

Topics

  • Fundamentals of three-phase machines
  • Equivalent circuit for an asynchronous (induction) motor
  • Torque, efficiency and optimum magnetisation
  • Circuit wiring and connection of components
  • Setting up a drive and testing its operation
  • Parameter setting for a frequency converter
  • Learning the key menus
  • Measurement of converter output voltage
  • Effect of start voltage
  • Effect of start compensation (lxR compensation)
  • Response of the machine in the absence of starting voltage and compensation
  • Effect of slip compensation
  • Recording of V/f characteristic for a machine operating without a load, with and without compensation of the frequency converter

Similar to illustration

Components of equipment sets

1 7735313  8  Industrial Frequency Converter LD
1 7732000 Machine Test System 0.3 LD
1 7732104  4  Squirrel Cage Motor 230/400 0.3 LD
1 73106  4  Coupling 0.3 LD
1 524222 CASSY Lab 2 for Drives and Power Systems LD
Manuals:
1 775290DE  4  LIT: E2.5.3.4 Drives with Industry Frequency Converter 0.3 (German) LD
1 775290EN  4  LIT: E2.5.3.4 Drives with Industry Frequency Converter 0.3 LD
Additional recommended:
1 200310  4  * LeyLab LD
Alternative:
1 200313  4  LeyLab 365 LD
Additional recommended:
1 200320  4  * Lab Docs Editor LD
Alternative:
1 200323  4  Lab Docs Editor 365 LD
1 531282  8  Multimeter Metrahit Pro LD
1 72610  8  Panel frame T150, two-level LD
1 6893001 Set for Potential equalization LD
1 50059 Safety bridging plugs, black, set of 10 LD
1 500592  4  * Safety bridging plugs with tap, black, set of 10 LD
1 500591  8  Safety bridging plugs, yellow/green, set of 10 LD
1 500855  8  Safety connecting leads, 32 A, Set 34 LD
1 500856  4  Safety connecting leads, 32 A, yellow/green, set of 5 LD
additionally required: PC with Windows 7 or higher with WIFI or USB connection

Articles marked with * are not essential, we do however recommend them to carry out the experiment.

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