Static Converter Drives & Induction Machines

VE2.5.3.1
Static Converter Drives & Induction Machines Current Converter Drives with Induction Machines (E2.5.3.1)
Static Converter Drives & Induction Machines Current Converter Drives with Induction Machines (E2.5.3.1)
Static Converter Drives & Induction Machines

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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 a static converter, which obtains its power from the (three-phase) mains network.

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

This equipment set allows experiments on how the speed of asynchronous (induction) machines can be modified using line-commutated static converters. The speed of the machine depends on the stator voltage and rotor impedance and can be adjusted in the experiment by changing these two variables. As well as putting the machine into operation and setting its parameters, the main thing considered is the change in the response of the machine. This involves recording load characteristics and determining key parameters. Addition of a PID controller allows the experiment set-ups to be enhanced into variable-speed drives with closed-loop speed control.

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

  • Drives using motors with slip-ring rotors and three-phase power controllers
  • Drives using motors with slip-ring rotors and pulse-controlled rotor impedance
  • Drives using motors with slip-ring rotors and static converter cascades

Similar to illustration

Components of equipment sets

1 73402  4  Reference variable generator LD
1 73419  4  Gain and offset adjust LD
3 73507  4  Thyristor branch pair, 1000 V/12 A LD
1 73509  8  Load power electronics LD
1 73517  4  Run-up control unit LD
2 73518  4  Fuse threefold super-fast LD
1 73520  4  Trigger point limiter LD
1 734064N  8  PID digital controller Net LD
1 725007  4  Software: L.control Lite LD
1 735065  4  Rectifier B6, 3 x 400 V/10 A LD
1 735135 Control unit six pulse, digital LD
1 735190  4  Phase control noise filter 3 x 4.5 A LD
1 735341 Control unit PWM/PFM LD
1 735346  4  IGBT 1000 V/10 A LD
1 73229  8  Rotor starter 0.3 LD
1 7731989  8  Machine test system 0.3 LD
1 773115 Machine Base  Bench 120 cm LD
1 773228 Multi-Function Machine 0.3 LD
1 773109 Tacho generator 0,3 LD
2 773108  8  Coupling and schaft end guard 0.3 transparent LD
2 73106  4  Coupling 0.3 LD
1 728421  4  CBM10 MOMO/FCCP LD
Manuals:
1 565372 LIT: Power Electronics and Drive Technology, T 12.4.1 (in English) LD
1 727100 Power Analyser CASSY LD
1 524220  4  CASSY Lab 2 LD
2 531282  4  Multimeter Metrahit Pro LD

Alternativ option to  measuring instruments above:

Measuring instruments, with digital measurement CASSY and oscilloscope operation:

1 727110 Power Analyser CASSY Plus LD
1 524220  4  CASSY Lab 2 LD
1 575302  4  Oscilloscope 30 MHz, digital, PT1265 LD
2 50102  4  BNC cable, 1 m LD
2 575231  4  Probe 100 MHz, 1:1 / 10:1 LD
1 500990  4  Adapter sockets, set of 2 LD
1 531282  4  Multimeter Metrahit Pro LD
Power supply:
1 72686  4  DC-Power Supply ± 15 V/3 A LD
1 72675  4  Three-phase supply unit with RCD LD
1 72680  8  Transformer, 45/90, 3 N LD
1 72609  8  Panel frame T130, two-level LD
2 50059  4  Safety bridging plugs, black, set of 10 LD
1 500851  4  Safety connecting leads, 32 A, set of 32 LD
1 500852  4  Safety connecting leads, 32 A, yellow/green, set of 10 LD
additionally required: PC with Windows 7 or higher with WIFI or USB connection
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