Industrial Electronics Laboratory
The Industrial Electronics Laboratory is one of the highly specialized laboratories in the field of Electrical Engineering, where experiments related to the performance of transistors, thyristors, inverters, choppers, and similar devices are conducted.
This laboratory consists of both theoretical and practical components; however, it primarily focuses on developing students’ understanding of practical electronic circuits. By conducting a series of individual and group experiments, students attempt to gain a complete comprehension of industrial electronic components. The goal is not merely to familiarize them with these components but also to help them deeply understand their operation and behavior.
The Industrial Electronics Laboratory serves as an effective medium for developing students’ insight into industrial electronics. The laboratory setup includes five experiment stands, each designed for specific experiments. The following sections provide a brief overview and description of the function and specifications of each stand.
1. Industrial Electronics Trainer, Basic Model
According to the newly approved curricula of the Ministry of Science, the device has been designed and provided with an operation manual. This apparatus is intended for use in the Industrial Electronics Laboratory as well as for training personnel in the industrial and technical training sectors. The capabilities of this system include the following:
- Familiarization with semiconductor switches such as transistors, thyristors, triacs, and diacs
- Practical study of single-phase and three-phase rectifier circuits
- Experimental study of transistorized converters: single-phase, three-phase, and six-pulse circuits
- Control of AC and DC motors (single-phase and three-phase)
- Dimmer circuit for lamp brightness control
- Easy replacement of semiconductor switches
- Flexible circuit design with user-friendly operation
- Familiarization with drive operation and thyristor gate circuit isolation methods (optical and magnetic)
- Examination of three-phase inverter operation using the V/F control method
- Control of three‑phase induction motor speed
- Control of universal motor speed
- LC, RC, and RL passive filters for generating sinusoidal waveforms
Device Specifications:
- AC power supply with 12 V and 24 V outputs, equipped with glass fuses and LED indicators
- Synchronized trigger circuit for single‑phase and three‑phase thyristor converters
- Twelve pulse transformers for gate drive and opto‑isolation of semiconductor switches
- Power circuit section with diode bridge configuration
- Dimmer circuit including nine 12 V lamps
- RLC load with selectable values: resistors 400 Ω, 200 Ω, 600 Ω; inductors 10 mH, 100 mH, 1 H; and capacitors 1 µF, 10 µF, 100 µF
- Experimental circuit for transistor bridge configurations
- Experimental circuit for thyristor bridge configurations
- Experimental circuit for diode bridge configurations
- Single‑phase and three‑phase electric motors rated at 100 W, 48 V
- Speed and direction control for three‑phase induction motor
- One tachogenerator module (DC motor feedback type) for speed measurement
- Experimental circuit for transistor bridge configurations (repetition for detail consistency)
- DC regulated power supply, 30 V / 2 A, two output units
The capabilities of this device include the following:
- Familiarization with semiconductor switches such as transistors, thyristors, triacs, diacs, and MOSFETs
- Practical study of single‑phase and three‑phase diode rectifier circuits
- Experimental study of single‑phase, three‑phase, and six‑pulse thyristor rectifier circuits
- Study of single‑phase and three‑phase AC converters
- Dimmer circuits and lamp brightness control
- Easy replacement of semiconductor switches
- Flexible circuit design with user‑friendly operation
- Examination of single‑phase inverter operation and SPWM generation method
- Familiarization with drive operation and opto‑/magnetic‑isolation techniques for semiconductor gate triggering
- Study of the three‑phase inverter using the V/F control method
- Speed control of a three‑phase induction motor
- Speed control of a universal motor
- Use of passive LC filters for generating sinusoidal waveforms
- Capability of implementing non‑isolated switched‑mode power supplies such as buck, boost, buck‑boost, Cuk, SEPIC, and Zeta converters
- Study of diode bridge circuits with smoothing capacitors
Device Specifications:
- AC power supply with output voltages of 12 V and 24 V, equipped with protective fuses and LED indicators
- Synchronized triggering circuit for single‑phase and three‑phase thyristor converters
- 12‑channel pulse transformer unit for drive and isolation of semiconductor switches
- Power circuit for diode bridge configurations
- Dimmer circuit equipped with nine 12 V lamps
- RLC load set with selectable values: 200 Ω, 400 Ω, 600 kΩ (resistive); 10 mH, 100 mH, 1 H (inductive); and capacitors of 1 µF and 10, and 100 µF
- Three‑phase thyristor bridge power circuit
- Electrical machines: single‑phase and three‑phase motors, rated 100 W, voltage 48 V
- Frequency and amplitude control in single‑phase SPWM modulation
- Speed control of a three‑phase induction motor
- Six digital displays with built‑in amplifiers for current measurement
- PWM pulse‑width modulation control circuit
- Power circuit for diode bridge circuits
- DC chopper power circuit
- Power circuit for IGBT bridge modules
- Multi‑way fuse box with protective elements
- DC power supply, adjustable: 0–30 V, 0–2 A, quantity = 2 units
The capabilities of this device include the following:
- Easy replacement of semiconductor switches
- Flexible and user‑friendly power circuit design
- Familiarization with drive operation and isolation of semiconductor switches
- Study of a three‑phase inverter using the V/F control method
- Speed control of a three‑phase induction motor
- Use of passive LC filters for producing sinusoidal waveforms
- Closed‑loop speed control of an electric motor using a PID module
- Measurement of motor parameters such as voltage, current, and speed through an inverter interface
- DSP board for implementing advanced modulation and control techniques
Device Specifications:
- AC power supply with 12 V and 24 V outputs, equipped with glass fuses and LED indicators
- Power circuit for diode bridge configurations
- RLC load set with selectable values: resistors 200 Ω, 400 Ω, 600 kΩ; inductors 10 mH, 100 mH, 1 H; capacitors 1, 10, and 100 µF
- DC power supply, adjustable 0–30 V, 0–2 A, quantity = 2 units
- Power circuit for three‑phase diode bridge with capacitor filter
- Three‑phase motor, 100 W, 48 V
- Inverters for measuring three‑phase parameters of voltage, current, and power
- Speed and direction control for a three‑phase induction motor
- Six digital displays with built‑in amplifiers for current measurement
- PID control module with proportional gain 0.1–20, integral gain 0.1–20, and derivative gain 0.05–10
- Inductive sensor for motor speed measurement
- Magnetic brake (dynamometer) with analog output
The capabilities of this device include:
- Monitoring voltage and current waveforms of industrial electronic circuits without requiring an oscilloscope through a modular system for measurement and control of power converters
- Studying various types of industrial power converters, including: single‑phase diode rectifier, single‑phase and three‑phase thyristor rectifiers, AC converters of half‑wave and full‑wave types, single‑phase and three‑phase inverters, and non‑synchronous DC power supply sources, as well as chopper, buck, boost, and buck‑boost converters
- Software setting and simplified implementation of pulse generation techniques
- Visual study of rectifier and smooth‑filtering operation using capacitor banks
- Various resistive, inductive, and capacitive electrical loads of laboratory and household types
- Generation of triggering angles in thyristor circuits with synchronization capability
- Display of average and effective values of voltage and current as well as medium power levels
- Measurement of isolated voltage, current, and motor speed
- Familiarization with semiconductor switches such as diode, thyristor, triac, and MOSFET
- Easy replacement of semiconductor switches
- Flexible power circuit with convenient operation
- Speed control of a three‑phase induction motor by the V/f method and control of a universal motor
Device Specifications:
- Monitoring and control module with software‑driven commands using optically isolated pulse signals amplified by driver transistors
- AC power supply of 12 V and 24 V with glass fuses and LED indicators
- Power circuit for diode bridge configurations
- Single‑phase and three‑phase electrical circuits with 100 W, 48 V power rating
- RLC load set with selectable values: resistors 200 Ω, 400 Ω, 600 kΩ; inductors 10 mH, 100 mH, 1 H; AC capacitors 1, 10, and 100 µF
- Power circuit for DC rectifier bridges
- Diode bridge circuits with capacitor filters for smoothing
- Thyristor bridge circuits for DC power control
- Adjustable DC power supply, 0–30 V, 0–2 A (2 units)
The capabilities of this device include:
- Familiarization with semiconductor switches such as diode and thyristor
- Easy replacement of semiconductor switches
- Flexible power circuit with easy operation
- Familiarization with the method of drive and magnetic isolation of semiconductor switches
- Control of lamp light intensity and frequency
- Speed control of a universal motor
- Investigation of single‑phase cycloconverter operation
Device Specifications:
- AC power supply with voltages of 12 V and 24 V together with glass fuses and LED indicators
- 12 pulse transformers for drive and isolation of semiconductor switches
- RLC load with values of 200 Ω, 400 Ω, 600 kΩ (resistive), 10 mH, 100 mH, 1 H (inductive)
- AC capacitors with values of 1, 10, and 100 µF
- Dimmer circuit with 9 lamps of 12 V each
- Universal motor with power 100 W and voltage 48 V
- Synchronized control circuit for 8 semiconductor switches in single‑phase cycloconverter
- Frequency conversion ratio in cycloconverter from 0.1 to 1
- Power circuit for thyristor bridge
- Adjustable DC power supply 0–30 V, 0–2 A (2 units)
