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Electrical Engineering Division

Manufacturer of a wide range of products which include electrical machine laboratory, solar - photovoltaic, electrical machine lab, power electronics lab, power systems lab instruments & training systems and control systems laboratory.

Electrical Machine Laboratory

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Primary Voltage	24 - 42 - 48 V
Power Supply	220 V 50/60 Hz
Rated Power	50 VA
Secondary Voltage	2 x 12 V

Each Laboratory Is Composed Of:

Basic autonomous benches with power supplies capable of providing all voltages, in AC or DC, fixed and variable and stabilized in order to develop a course on electrical measurements and electrical machines;
Universal bases to assemble the machines and to couple them to the other machines of the laboratory;
Motors, generators, transformers, brakes, RLC loads, instrumentation and accessories to perform any test on electrical machines.

Each electric machine is equipped with a comprehensive training manual showing all tests that can be performed at no-load and load conditions.

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Solar - Photovoltaic

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Plant Capacity	5 KW
Type of Plant	Grid Tie
Other Components	Solar Tracker
Operating Voltage	24 V

Solar panels use light energy from the sun to generate electricity through the photovoltaic effect. A typical photovoltaic installation includes an array of panels, an inverter, batteries and wiring.

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Electrical Machine Lab

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Powers	3.5 kW
Type	Electric
Uses	LAB

Electricity is a general term that encompasses a variety of phenomena resulting from the presence and flow of electric charge. These include many easily recognizable phenomena, such as lightning and static electricity, but in addition, less familiar concepts, such as the electromagnetic field and electromagnetic induction. Our proposal starts with the electric machines (4 different powers: 0.2 kW, 0.3 kW, 1.1 kW and 3.5 kW) and the related electromechanical construction technology and then proceeds with civil and industrial electrical installations, to reach the electrical power engineering subject, dealing with the generation, the distribution, the protection and the utilization of the electrical power. A special laboratory (EIB - European Installation Bus) is dedicated to the study of domotics, a new technology that uses a single bus for the distribution of both power and signals. We have complete solution of Electrical Engineering Department.

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Power Electronics Lab

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Type	Power Electronics
Power	245 V
Application	LAB

The branch of electronics, which deals with the control of power at supply frequency (50 Hz or 60 Hz), is known as power electronics and it is one of the contemporary subjects of electrical engineering that has seen many advancements in recent times and has affected human life in almost all spheres. It is a hybrid of power engineering, analogue electronics, semiconductor devices and control systems. One major field of semiconductor devices has been to control large blocks of power flow in a system that has led to the development of power electronics. Such devices act as controlled switches and can perform the duties of controlled rectification, inversion and regulation of power in a load and the most important switching devices are thyristors or SCR (Silicon Controlled Rectifier), Triac (Triode for alternating current), Diac (Diode for alternating current), IGBT (Insulated Gate Bipolar Transistor), MOSFET (Metal Oxide Semiconductor Field Effect Transistor) and BJT (Bipolar Junction Transistor). Lastly, the electric energy in itself is not usable until it is converted into a tangible form of energy such as motion, sound, heat, light, etc. Technosys has designed a complete laboratory, with industrial components mounted on didactic panels, that covers the main configurations of power electronic circuits such as AC to DC conversion (Rectifiers), AC to AC conversion (fixed AC to variable AC at same input frequency or to AC with variable frequency), DC to DC conversion (Choppers), DC to AC conversion (Inverters) and applications as DC and AC motor driving.

AC-DC conversion - Diodes and SCR

AC-AC conversion - TRIAC and phase control

DC-DC conversion - Chopper and switching supplies

DC-AC conversion - Inverter and frequency converters

DC and AC motor driving

Software

To make some topics, covered in the various laboratories of power electronics, easier and more attractive, De Lorenzo has developed a software that allows studying in automatic mode the subjects concerning diodes and uncontrolled rectifiers, SCR and controlled rectifiers, thyristors and controlled AC/DC converters and induction motor drives. The software is divided in two parts one for power semiconductor devices (diode, SCR and thyristor) and one for variable frequency converter by means of the method of U/F characteristic curve. It is a Windows application that allows user to communicate with Power Electronics configuration through three main devices such as Isolation amplifier unit, PC interface unit and PWM control unit. It allows to work comfortably through a friendly interface, which makes possible to analyze the current configuration, and includes different graphs to monitor performance. It shows up with a very accurate graphic presentation and it is developed in LabVIEW environment.

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Power Systems Lab Instruments & Training Systems

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Usage	LAB
Network	DC Network Analyser
Type	Electro Mechanical

The following portable type laboratory module designed to study the working principal of power system lab equipments. (Both static and Electro mechanical)

Microcontroller based IDMT/DMT type over current relay study trainer.
Electro mechanical over current relay study trainer (IDMT/)
Microcontroller based over/under voltage realy study trainer (IDMT/DMT).
Electro mechanical type over voltage relay study trainer (DMT/IDMT).
Electro mechanical type under voltage relay study trainer (/IDMT).
Microcontroller based over/under frequency relay study trainer.
Microcontroller based earth fault relay study trainer.
High voltage at transmission line analysis.
FACTS Study trainer.
Bucholtz relay study trainer.
AC transmission line analyser.
DC Network analyser.
Electro mechanical type

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Control Systems Laboratory

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Position Control System	DC Motor
Control System	Digital
Usage	Laboratory

Control and instrumentation systems are at the very heart of the technology-based world in which we live. The functions that they perform are crucial to the operation of products found in all aspects of everyday life. The automobiles we drive, the domestic appliances in our homes and the automated machines in the workplace – all involve the use of control and instrumentation systems.Technosys range of control and instrumentation training systems effectively address the need to teach students the complexities of control and instrumentation technology.

Computer Based Analog & Digital Motor Control Teaching Systems
DC Servo motor control system & PID Controller
DC Motor Position Control System.
DSP Based DC Servo motor position control system.
MATLAB Based Control Systems Trainer
Controller for Linear Induction Motor & Inverted Pendulum.
Digital Control System.
Digital Simulation of Linear Systems.
Temperture Control Systems.
Relay Control Systems.

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Open Electrical Machine Lab

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Type	Open Electrical
Brush Holder	3+3 Brushes
Usage	Laboratory

Open Electrical machine Lab The system is a component kit that should allow to assemble the rotating electrical machines, both for AC/DC, leaving the student the possibility of a personal critical realization with the purpose of a real knowledge of the various constructive techniques.

Whole unit should to assembled & disassembled very easily:

Baseplate
Four removable bearing housing
Coupling
Elastic buffer
Optical speed transducer
Clamping screws
keys
DC stator with salient poles
AC stator with three-phase winding
Commutator rotor
Brush holder with two brushes
Squirrel cage rotor
Slip-ring rotor

It must be possible the realization of the following experiments :

Main poles
Interpoles
Main magnetic field
Intensity of the magnetic field
Induced voltage
Interpole effect
No-load magnetic neutral axis
Rotating magnetic field
Three-phase rotating field
Single-phase rotating field

It is also possible to perform tests and measurements on the electric machines of the OPENLAB system through a data acquisition and processing system composed of a dedicated software in LabView environment, an interface to PC and a set of suitable motor driven modules for the control of the parameter and interfaceable modules for the acquisition of data. The following table shows the changes in modules that is necessary to make to the system in order to obtain a fully automatic data acquisition and processing system with the OPENLAB components. All the substituting modules come from the Microlab electric

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Instrumentation and Transducer Lab / Training Systems

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Power	150-220 V
Type	Instrumentation
Application	Transducer Lab

The control training systems effectively addresses the need to teach students the complexities of production control technology, by providing complete training solutions covering the following areas: Motor control systems Transducer and Instrumentation Programmabl
D1750 is a rugged self-contained panel trainer with a steel case and integral power supplies. It provides a range of transducer input and output devices together with associated instrumentation circuitry, The transducer and signal conditioning elements of this trainer are typical of those used throughout industry, These elements include.
OUTPUT DEVICES :For the generation of heat, light, rotary and linear actions, audible and ultrasonic sound and visual indication of voltage, time and number of event
INSTRUMENTATION CIRCUITRY :For the investigation of Wheatstone Bridges and current. measurement techniques, Linear and non-linear signal amplification, closed and open loop control, one, two and three term (PID) control, DC restoration of AC signals, signal transmission techniques and alarm generation. The comprehensive competency-based curriculum manual provided with the D1750 covers the following topic areas :

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Virtual Instrumentation Lab Board

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Oscilloscope	40 MSa
Pattern Generator	32-Channel
Voltmeter	4-Channel

The Electronics Explorer board (EE board) includes all of the test and measurement equipment needed to design and test analog and digital circuits of all types. Built around a large solderless breadboard, the EE board includes oscilloscopes, waveform generators, power supplies, voltmeters, reference voltage generators, and thirty-two digital signals that can be configured as a logic analyzer, pattern generator, or any one of several static digital I/O devices. All of these instruments can be connected to circuits built on the solderless breadboards using simple jumper wires. Designed for daily use and intended for every student to own, the EE board combines everything needed to design and test circuits in a single "all in one" device. Even in introductory classes, students can complete, test, and analyze real circuit designs as a part of every homework assignment. No more once a week labs; now every student can complete designs in virtually any setting - any residence can be a complete, 24-hour design studio! The EE board is powered by the free, PC-based WaveForms™ software that makes it easy to acquire, store, analyze, produce and reuse analog and digital signals. WaveForms™ runs well on virtually any notebook PC, including low-cost Netbooks. A high-speed USB2 connection ensures all EE board instruments respond in near real-time. WaveForms™ data files are stored using standard formats, making it easy to share data between instruments, and to export data to word processors or graphics editors. This means well documented student lab/project reports can be completed using standard office tools, and submitted electronically.

Electronics Explorer Board:

All-in-one circuit design station powered by WaveForms™ soft
2 programmable reference voltages
2-channel Arbitrary Waveform Generator
Triple-Output Power Supply (two programmable)
32-Channel Logic Analyzer
Discrete digital I/O’s (buttons, switches, LEDs, etc)

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Motor Design Software

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The Opera Simulation Software Suite is a powerful interactive Finite Element Analysis (FEA) software package proven to provide accurate electromagnetic field modelling for all types of machines, including axial flux topologies and linear motion devices. Electromagnetic and other physics solvers, that provide different levels of analysis complexity, are available to offer users the best tools for their requirements. Comprehensive material modelling options (including magnetization, demagnetization in service and full vector hysteresis material model) as well as easy definition of external drive circuits are all geared towards facilitating machines design. The integrated Optimizer provides an efficient route from concept to competitive product. The Machines Environments (ME) is an easy to use, template-driven development tool specifically designed for electrical machines engineers.

Opera-2d offers functionality for designing most radial flux machines in two dimensions, by using the assumption that for the majority of the length of the machine a Cartesian (XY) cross-sectional analysis accurately defines the behaviour.

Opera-3d supplies three dimensional modelling, essential when:

the length of the machine is short compared to the radius
the rotor and stator lengths are substantially different and this cannot be adequately compensated for by changes in material properties
axial flux paths exist that significantly affect the performance
more accurate representations of the end windings/induced current return paths are needed

Depending on the geometrical complexity and symmetry, users have the option of using either Opera-2d or Opera-3d. Statics, Steady-state and Transient with motion Opera’s Static solver provides an accurate representation of the electromagnetic behaviour of the machine. This is useful for certain types of machines where the fields can be considered as ‘frozen’ in time (as in the case of DC machines) or travelling at the same speed as the rotor (Synchronous Machines), Users can deploy the Steady-state (timevarying AC) solvers for machine analyses that include time varying fields, for example the induction machine or torque vs. slip characterisation.

By using the Transient with motion solvers, users can analyse completely the real-world performance of any machine. This also includes analysis of the effects of mechanical coupling. Losses Opera’s range of solvers allow users to evaluate Iron losses (including eddy current, hysteresis and excess/rotational components) for any type of machine. This can be done using Fourier methods with losses described by Steinmetz based formulations or directly from manufacturers curves. Users can calculate copper losses simply from the current flowing in simulated windings. Opera’s hysteresis solver gives users the ability to obtain explicit hysteresis losses (including rotational component losses and eddy current losses) by explicitly defining the materials’ conductivities. Any loss quantity can be used as a heat source in 2D or 3D? thermal analyses.

Additional Information:

Minimum Order Quantity: 01 User

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Electrical Machine Trainer

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Our electrical machine trainer is a novel effort to make the long prevailing screwdriver technology of educating students, a thing of the past.

By way of this trainer that comes with 2 stators & 2 rotors students and teachers are capacitated to assemble and operate all types of A.C. & D.C. MOTORS effortlessly enabling them to unravel the various intricacies of electrical machine technology.

This trainer is indispensable in so far as it gives the forthcoming generation of engineering experts a chance to view their theoretical concepts perfectly synchronize with the practical know how of assembling & dismantling machines.

More so, the trainer brings to them 54 assembly experiments to familiarize them with the construction, operation and manipulation of all motors dominating every facet of our modern times.

It would not therefore be an exaggeration to state that the trainer is nothing but a manifestation of their very own technical ideas.

The novelty and authenticity of our research has received due certification from SHRI S.K.BHATTACHARYA, Head of Electrical Dept, TECHNICAL TEACHER'S TRAINING INSTITUTE, CHANDIGARH under ministry of HUMAN RESOURCE DEVELOPMENT.

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