Smooth Pole Rotor, 0.3

VE2.2.5.2
Smooth Pole Rotor, 0.3
Smooth Pole Rotor, 0.3

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Description

The tests are carried out with industrially manufactured machines. All test machines have a special base for connection to the Machine Test System 0.3. With the Machine Test CASSY all measured values of the AC machines are recorded. The measured values can be shown directly on the built-in display as a single value, table of a measurement series or diagram. The measurements can be made without additional software, and the measured data can be stored locally on the unit. The Machine Test CASSY is used to record the characteristic curves of the test machines. The power supply for the test machines is partly taken directly from the public supply network. The generator operation of the synchronous machine takes place in the stand-alone grid or on the interconnected grid, depending on the experiment.

Objectives

  • Protective measures and electrical safety
  • Construction and commissioning of electrical machines
  • Use of starting circuits
  • Efficiency of the machine
  • Assessment of characteristic curves of electrical machines
  • Characteristics in generator operation

The main field of application of the synchronous machine is power generation. It is also used as commutated synchronous machines in drive control. In recent years, the commutated synchronous machine has been used in e-mobility. Smooth Pole Rotor generators are used in gas and steam power plants that require a low number of pole pairs at high speed. This Smooth Pole Rotor can better withstand the centrifugal forces that arise. The application area of the full-pole rotor generator is the choice for large thermodynamic power plants.

Highlights:

  • To protect against overheating, the stator windings of the test machines are equipped with temperature sensors.
  • In case of overheating, the machine testing system switches off the load of the test machine, thus maintaining the air cooling. This prevents damage to the testing machines.
  • The test machines have a didactic terminal board with the winding diagram printed on it.
  • All winding ends are led out on safety sockets (4 mm) on the terminal board.
  • Computer-aided measured value acquisition provides meaningful measurement results.
  • The arrangement of the 4 mm safety sockets corresponds to the standards for industrial machines.

All functions of the Machine Test CASSY 0.3 can be operated quickly and directly via the display, the rotary wheel and the buttons on the unit. All settings and measurement results can be saved on the unit and quickly called up again later or simply downloaded.

In addition, the Machine Test CASSY 0.3 is fully controllable in real time via RJ45 Ethernet, W-LAN and USB-C interfaces.

These interfaces can be used by the following software:

  • CASSY Lab 2 for drives and energy systems,
  • MATLAB® and LabVIEW ™
  • Lab Docs Editor Advanced .

Several integrated servers are available in Machine Test CASSY 0.3 for the local media connection of at least four terminals simultaneously.

For more details, see product data 7731900 or 7731901 Machine Test CASSY 0.3.

The equipment is equally suitable for student experiments in the laboratory with low voltage (230/400 V 3-phase supply) and - with a mobile trainer - for teacher demonstrations in the classroom or lecture hall. The experiments are carried out according to the manual.

The target group is made up of commercial apprentices and students of electrical machine construction. The course offers experiments at an intermediate level and also allows for the necessary insight into machine behaviour for scientific interpretation at undergraduate level. The media connection makes the experiments suitable for demonstration in the classroom or a lecture hall.

In the following configurations there are still extended tests with synchronous machine:

  • E2.2.5.1 Salient Pole Rotor
  • E2.2.5.3 Multi-function machine
  • E2.6.2.4 AC servo with industrial separately excited synchronous machine

Synchronous motor topics 

  • Torque and loading
  • Starting and synchronisation
  • Starting methods for synchronous motors
  • Control of reactive power
  • Efficiency in motor operation
  • V-curve in motor operation

Synchronous generator topics

  • Operation with no-load and with a permanent three-pole short-circuit
  • Voltage generation
  • Excitation of synchronous machines
  • Operating response
  • Armature current and torque
  • Synchronisation and use of multiple machines in parallel
  • Efficiency in generator operation
  • V-curve in generator operation

Main components:

Components of equipment sets

1 773237  8  Synchronous Machine SR 0.3 LD
1 73213  8  Motor protection switch, 0.6-1 A LD
Setup for the machine test
1 745561  8  Power circuit breaker module LD
Machine test system 300 W
1 7731900 Machine Test CASSY 0.3 LD
1 524222 CASSY Lab 2 for Drives and Power Systems LD
1 7731991 Electrical Dynamometer 0,3 LD
1 773108  8  Coupling / shaft end guard 0.3 transparent LD
1 31539  4  Weight, 1 kg LD
1 773110 Machine Base Unit 90 cm LD

Alternative machine base unit:

A longer machine base unit is required if drives with commutation are used.

1 773115 Machine Base  Bench 120 cm LD
1 73106  4  Coupling 0.3 LD
Extension for additional generator experiment
1 74505  4  Manual synchronisation unit LD
1 773360 Controllable resistive load 0.3 LD
1 773362 Controllable capacitive load 0.3 LD
1 73242  4  Inductive load LD
Manuals:
1 775205DE  4  LIT: Synchronous Machines 0.3 (German) LD
0 775205EN  4  * LIT: E2.2.5 Synchronous Machine 0.3 LD
Power supply:
1 72675  8  Three-phase supply unit with RCD LD
1 745021  4  Excitation voltage controller 200 V/2.5 A LD
1 72609  4  Panel frame T130, two-level LD
2 50059  8  Safety bridging plugs, black, set of 10 LD
1 500591  4  Safety bridging plugs, yellow/green, set of 10 LD
1 500855  4  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 7/8/10

As an option for existing motors:

The following base  are options to use existing motors on site.
It's possible to use machines  with  B3 design and a 71 mm shaft  level.

1 773181  4  Assembly set el. machine base 0.3 short LD
1 773182  4  Assembly set el. machine base 0.3 long LD

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

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