AL-E767A SINGLE AND THREE PHASE INVERTER/ CHOPPER 1.5KW

Description

AL-E767A SINGLE AND THREE PHASE INVERTER/  CHOPPER 1.5KW

DETAILED TECHNICAL SPECIFICATION

AL-E767A SINGLE & THREE PHASE INVERTER AND CHOPPER TRAINER (1.5 kW)

Product Code: AL-E767A
Product Name: Single & Three Phase Inverter and Chopper Trainer (1.5 kW)
Category: Power Electronics Laboratory Trainer / Electrical Engineering Trainer

Prepared from the uploaded technical document.

1. Product Overview

The AL-E767A Single & Three Phase Inverter and Chopper Trainer is an advanced power electronics laboratory trainer designed to study the operation, characteristics, and control of PWM Inverters and DC Choppers. The trainer provides a comprehensive platform for practical experiments on single-phase and three-phase inverter circuits along with 1-, 2-, and 4-quadrant DC chopper configurations.

The system incorporates a high-power MOSFET-based inverter module, PWM generation using the triangular comparator method, built-in HMI, lamp load assembly, PMDC motor load, protection circuits, and modular interconnections, making it ideal for engineering colleges, polytechnic institutes, vocational training centres, and industrial training laboratories.

2. Educational Objectives

The trainer enables students to:

• Study PWM inverter operation.
• Understand single-phase inverter circuits.
• Study three-phase inverter circuits.
• Analyze DC chopper operation.
• Perform experiments on 1-, 2-, and 4-quadrant choppers.
• Understand PWM generation techniques.
• Study MOSFET-based power converters.
• Analyze switching waveforms.
• Perform practical measurements and troubleshooting.

3. Scope of Learning

The trainer supports practical experiments on:

• Single Phase PWM Inverter
• Three Phase PWM Inverter
• Single Phase Chopper
• One Quadrant Chopper
• Two Quadrant Chopper
• Four Quadrant Chopper

4. Technical Specifications

Power Section

MOSFET Power Module

• MOSFET Rating: 1200 V / 25 A
• High-Speed Switching
• Modular Construction
• Easily Replaceable Module

PWM Generator

• PWM Technique: Triangular Comparator Method
• Frequency Range: Approximately 270 Hz to 5 kHz
• Duty Cycle Adjustment:
• 0–90%
• 0–50%

Interconnection

• 2 mm Safety Sockets
• 4 mm Safety Sockets
• Colour-Coded Patch Cord Connections

5. Power Supply

The trainer incorporates:

• Built-in Single Phase AC Power Supply
• Centre-Tapped Transformer
• Power Distribution Circuit
• Protected MCB Input
• Internal Power Modules

6. Firing Circuits

The trainer provides dedicated firing circuits for:

• Single Phase Inverter
• Three Phase Inverter
• DC Chopper

7. Human Machine Interface (HMI)

• Built-in 3.5-inch HMI
• User-Friendly Operation
• System Monitoring
• Control Interface

8. Load Assembly

The trainer includes:

• Three 200 W Lamp Loads
• PMDC Motor Load (½ HP, 230 V)
• Power Output Terminals
• Load Connection Interface

9. Control Panel Features

The front panel incorporates:

• Main Power Switch
• Power ON Indicator
• Emergency Stop Push Button
• PWM Control Circuit
• Test Points
• Power Module Interface
• Lamp Load Connections
• Patch Cord Connections
• HMI Display
• Safety Terminals

10. Test Facilities

The trainer provides:

• Test Points for PWM Circuit
• Firing Pulse Monitoring
• Waveform Observation
• Modular Testing
• Practical Measurement Facilities

11. Protection Features

The trainer incorporates:

• Single Phase 10 A MCB Protection
• Three MCBs for Input AC Supply
• Short Circuit Protection
• Internal RC Snubber Circuit
• Emergency Stop Switch
• Protected MOSFET Power Module
• Fuse Protection

12. Construction

• Heavy-Duty Metal Cabinet
• Printed Bakelite/Aluminium Front Panel
• Industrial Screen-Printed Circuit Symbols
• Laboratory-Grade Construction
• Modular Replaceable Boards
• Rugged Industrial Design

13. Practical Experiments

Students can perform experiments on:

• Single Phase PWM Inverter
• Three Phase PWM Inverter
• PWM Generation
• MOSFET Switching Characteristics
• Chopper Circuit Operation
• One Quadrant Chopper
• Two Quadrant Chopper
• Four Quadrant Chopper
• Lamp Load Analysis
• PMDC Motor Speed Control
• Switching Waveform Analysis
• Frequency Variation
• Duty Cycle Variation
• Practical Troubleshooting

14. Safety Features

• Emergency Stop Facility
• MCB Protection
• Short Circuit Protection
• RC Snubber Protection
• Colour-Coded Safety Sockets
• Fully Insulated Front Panel
• Low-Risk Laboratory Connections

15. Mechanical Specifications

16. Standard Accessories

The trainer is supplied with:

• Single & Three Phase Inverter and Chopper Trainer
• Power Pack
• 2 mm Patch Cords
• 4 mm Patch Cords
• Instruction Manual
• Software/Instruction CD
• ½ HP, 230 V PMDC Motor
• Three 200 W Lamps

17. Applications

The trainer is suitable for:

• Power Electronics Laboratory
• Electrical Engineering Laboratory
• Electronics Engineering Laboratory
• Industrial Automation Laboratory
• Polytechnic Colleges
• Engineering Colleges
• Vocational Training Institutes
• Skill Development Centres
• Industrial Training Centres

18. Learning Outcomes

After completing the practical exercises, students will be able to:

• Understand PWM inverter principles.
• Analyze single-phase and three-phase inverter circuits.
• Design and test chopper circuits.
• Generate PWM firing pulses.
• Interface power electronic devices safely.
• Measure switching characteristics.
• Analyze inverter output waveforms.
• Perform fault diagnosis and troubleshooting.
• Apply power electronics concepts in industrial applications.

19. Salient Features

• 1.5 kW inverter and chopper trainer
• Single-phase and three-phase PWM inverter experiments
• 1-, 2-, and 4-quadrant chopper operation
• 1200 V / 25 A MOSFET power module
• PWM generation using triangular comparator method
• Adjustable PWM frequency (270 Hz to 5 kHz)
• Built-in 3.5-inch HMI
• Integrated single-phase power supply
• Centre-tapped transformer (0–230 V ±10%)
• Three 200 W lamp loads and ½ HP PMDC motor
• Emergency stop, MCB protection, RC snubber, and short-circuit protection
• Modular, laboratory-grade metal cabinet with safety sockets and printed front panel
• Ideal for power electronics, electrical engineering, and industrial automation laboratories.

Technical Details