Electrical engineering

CI-08 Frequency-controlled asynchronous electric drive based on the Altivar 71 frequency converter

 

Duration 4 days 32 hours

16 - theoretical information

16 h - practical lessons

Course Content

Principles of operation of a modern asynchronous electric drive and its components:

- Elements, functions, characteristics of the electric drive, the role of the frequency converter

- Analysis of operating modes with the help of mechanical characteristics

- Physical fundamentals of the characteristics of an asynchronous electric drive

- Features of artificial characteristics

- Specificity and methods of frequency regulation, hardware means for its implementation

- Application of an active voltage rectifier (AFE) The family of ATV71 frequency converters

- Family specification, wiring diagrams

- Additional equipment ATV71

- Overview of the electrical and communication characteristics of the ATV71

- Overview of ATV71 application functions, criteria for using these functions

- ATV71 interface and communication capabilities of the converter. Programming features ATV71 Programming hardware Setting of ATV71 application functions Special functions ATV61 for use in pumping and fan installations. Using the SoMove program to configure and monitor the drive. Obtain experimental results and analyze them.

 

 

 Installation and design. Special starts of squirrel cage induction motors in industry

 

Duration 5 days 40 hours

3 h - theoretical information

37 h - practical lessons

Course Content

Introduction to the installation and design laboratory:

- Technique of performing practical work;

- The technological program of the module;

The basic principles of the schematization of industrial electrical circuits: - Features of industrial circuit diagrams;

- Standardization (IEC), schematization and numbering

- Structure of industrial components of ready systems;

- Conductor cross-sections and marking;

- Technical documentation;

- Features of the choice of the type of connection of the windings of an induction motor with a squirrel cage rotor and the parameters of the factory nameplates.

- Start and stop technology with contactors. Design and installation of special starts of squirrel cage induction motors in industry:

- Automatic canopy system with single-phase asynchronous electric motor with squirrel-cage rotor;

- Tunnel fan system with switching from star to delta;

- Pump start-up system with integrated starter Tesys U;

- Start-up system for the escalator with soft starters;

- Inverter connection and quick start.- Additional equipment ATV71

- Overview of the electrical and communication characteristics of the ATV71

- Overview of ATV71 application functions, criteria for using these functions

- ATV71 interface and communication capabilities of the converter. Programming features ATV71 Programming hardware Setting of ATV71 application functions Special functions ATV61 for use in pumping and fan installations. Using the SoMove program to configure and monitor the drive. Obtain experimental results and analyze them.

 

 

Installation and design. Direct start-up of squirrel cage induction motors in industry

 

Duration 5 days 40 hours

3 h - theoretical information

37 h - practical lessons

Course Content

Introduction to the installation and design laboratory:

- Technique of performing practical work;

- The technological program of the module;

The basic principles of the schematization of industrial electrical circuits:

- Features of industrial circuit diagrams;

- Standardization (IEC), schematization and numbering;

- Structure of industrial components of ready systems;

- Conductor cross-sections and marking;

- Technical documentation; - Features of the choice of the type of connection of the windings of an induction motor with a squirrel cage rotor and the parameters of the factory nameplates.

- Start and stop technology with contactors. Design and installation of special starts of squirrel cage induction motors in industry:

- Lighting system in two zones;

- Direct starting system of an induction motor with a squirrel-cage rotor in the example of a rotary machine;

- Heating mixer system;

- Control system of the scraper mechanism on the relay-contactor basis;

- Automatic sliding fence.- Features of the choice of the type of connection of the windings of an induction motor with a squirrel cage rotor and the parameters of the factory nameplates.

- Start and stop technology with contactors. Design and installation of special starts of squirrel cage induction motors in industry:

- Automatic canopy system with single-phase asynchronous electric motor with squirrel-cage rotor;

- Tunnel fan system with switching from star to delta;

- Pump start-up system with integrated starter Tesys U;

- Start-up system for the escalator with soft starters;

- Inverter connection and quick start.- Additional equipment ATV71

- Overview of the electrical and communication characteristics of the ATV71

- Overview of ATV71 application functions, criteria for using these functions

- ATV71 interface and communication capabilities of the converter. Programming features ATV71 Programming hardware Setting of ATV71 application functions Special functions ATV61 for use in pumping and fan installations. Using the SoMove program to configure and monitor the drive. Obtain experimental results and analyze them.

 

Introduction to programming in the Matlab environment

 

Duration 3 days 24 hours

24 h - practical lessons

Course Content

Mastering and first programming:

- Learning the command line (Command Window) and the Workspace (Workspace);

- Mathematical operations with vectors and matrix calculi in the command line;

- Output of graphical editors (plot) on the command line and development of special algorithms;

- Fundamentals of numerical calculation (polynomials, numerical integration). Modeling of dynamic systems:

- The solution of differential equations of the first order;

- Modeling using the Simulink library;

- Simulation of a DC machine.

- The technological program of the module.

- Modeling of DC motor speed control loops (open and closed).

 

Modeling physical systems in Matlab using the Simscap library

 

Duration 4 days 32 h

32 h - practical lessons

Course Content

Introduction to Simscape on simple examples:

- Basic functionality of the Simscape library;

- Simscape and Simulink;

- Simulation of single-phase rectifier using elements of Simscape;

- Simulation of a DC motor using Simscape elements; Modeling of thermophysical systems:

- Study of the components of the thermo-physical system Simscape;

- Modeling of thermal processes (conduction and convection) in the building;

- Modeling of heating and cost of consumption;

Modeling of electromagnetic systems:

- Modeling of an electromagnetic linear-acting device;

- Creating specific blocks Familiarizing yourself with the SimPowerSystems library;

- Mastering: an example of a series linear RLC chain with step-by-step voltage supply;

- Simulation of the system for changing the frequency of the DC motor using a PWM modulator;

- Instruments for the analysis of electrical circuits: the functions of a multimeter, a signal quality analyzer using the Fourier transform;

- Modeling of type Phasors (vectors)

 

 

Basics of programming in LabVIEW

 

Duration 2 days 16 hours

16 h - practical lessons

Course Content

Mastering and First Programming:

- Introduction to LabVIEW

- Work with front panel and block diagram

- Types of variables

- Use of structures

- Arrays and Clusters

- Sweeps and waveform graphs

- Study of strings and I / O devices Design of virtual measuring instruments (VMD):

- Output of data and writing to a file

- Designing a VMD voltmeter and ammeter

- Frequency measurement

- Frequency analysis

- VMD digital recording

- VMD for reading discrete signals

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