PEOPLE'S COMMITTEE OF DONG THAP PROVINCE
DONG THAP VOCATIONAL COLLEGE
COURSE BOOK
MODULE: POWER ELECTRONICS
INDUSTRY, OCCUPATION: REFRIGERATION & AIR CONDITIONING ENGINEERING
LEVEL: COLLEGE
(Issued with Decision No. 257/QD-TCĐNĐT dated July 13, 2017 of the Principal of Dong Thap Vocational College)
Dong Thap, 2017
COPYRIGHT STATEMENT
This document is a textbook and may be used in its entirety or excerpted for training and reference purposes.
Any other purpose that is deviant or used for unfair business purposes is strictly prohibited.
INDEX
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COPYRIGHT STATEMENT: ...................................................................................................
INTRODUCTION......................................................................................................
TABLE OF CONTENTS 1
LESSON 1: POWER SEMICONDUCTORS (DIODES, POWER TRANSISTORS), 7
1. Structure and working principle: 7
1.1. Structure, working principle, Volt-Ampere characteristics of Power Diode 9
1.2. Main parameters of power diode 10
1.3. Structure, common emitter connection diagram, connection diagram like the contactless switching element of a 10-watt bipolar transistor
1.4. Main parameters of power bipolar transistor 13
1.5. Symbols, parameters, output characteristics of power MOSFET 13
2. Check components 14
2.1. Check power diode 14
2.2. Measure, check, determine polarity, look up parameters of 15-watt power bipolar transistor
2.3. Measure, check, determine polarity, look up parameters of MOSFET Transistor. 17
2.4. Assemble the application diagram of Diodes, Power Transistors 19
LESSON 2: POWER SEMICONDUCTORS (THYRISTO, THYRISTO GTO, TRIAC), 30
1. Structure, working principle 30
1.1. Structure, working principle, Volt-Ampere characteristics of 32 power Thyristor
1.2. Main parameters of 33 power Thyristor
1.3. Structure, connection diagram, characteristics of GTO 33 control pole locked Thyristor
1.4. Structure, connection diagram, characteristics of Triac 35
2. Check components 36
2.1. Check and determine the polarity of the 36-watt Thyristor
2.2. Measuring and testing Triac 38
2.3. Assemble the application connection diagram of Thiristor, GTO, Triac. 39
3. Test 45
LESSON 3: SINGLE-PHASE UNCONTROLLED POWER RECTIFIER, 46
1. Single-phase half-cycle rectifier circuit 46
1.1. Draw a schematic diagram of a single-phase, half-cycle rectifier circuit 46
1.2. Working principle, drawing the voltage-current curve for load R, R – L 46
1.3. Select components according to load requirements 47
1.4. Drawing printed circuit boards and component layout diagrams 47
2. Single-phase two-half-cycle rectifier circuit 48
2.1. Draw the schematic diagram of a single-phase, two-half-cycle rectifier circuit 48
2.2. Working principle, drawing the voltage-current curve for load R, R – L. 499
2.3. Select components according to load requirements 50
2.4. Drawing printed circuit boards and component layout diagrams 51
2.5. Component mounting and welding 51
2.6. Measure and draw the voltage waveform on the load using measuring instrument 51
3. Test 512
LESSON 4: THREE-PHASE UNCONTROLLED POWER RECTIFIER, 53
1. Three-phase rectifier circuit diagram 53
1.1. Draw the schematic diagram of the three-phase rectifier circuit in the form of a 53-ray
1.2. Working principle, drawing the voltage-current curve for load R 53
2. Three-phase rectifier circuit diagram 55
2.1. Draw the schematic diagram of the three-phase rectifier circuit, spherical diagram 55
2.2. Analyze the working principle, draw the voltage-current curve for load R 55
2.3. Select components according to load requirements 56
2.4. Drawing printed circuit boards and component layout diagrams 57
2.5. Component mounting and welding 58
2.6. Measure and draw the voltage waveform on the load using measuring instrument 58
3. Test 58
LESSON 5: SMALL CAPACITY DC POWER SUPPLY 60
1. Draw a schematic diagram of a single-phase voltage regulator rectifier circuit: 60
2. Analyze the working principle, draw the voltage-current curve for load R: 60
2.1. Select components according to load requirements 61
2.2. Drawing printed circuit boards and component layout diagrams 62
2.3. Component mounting and welding 62
2.4. Measure and draw the voltage waveform on the load using measuring instrument 62
3. Test 63
LESSON 6: SINGLE-PHASE CONTROLLED POWER RECTIFIER, 64
1. Draw a schematic diagram of a single-phase controlled bridge rectifier circuit 64
2. Working principle, draw the voltage-current curve for load R, R - L according to 65
2.1. Working principle: 65
2.2. Select components according to load requirements 66
2.3. Drawing printed circuit boards and component layout diagrams 68
2.4. Component mounting and welding 68
2.5. Measure and draw the voltage waveform on the load with changing opening angle using measuring instrument69 3. Check… 67
LESSON 7: THREE-PHASE CONTROLLED POWER RECTIFIER, 72
1. Draw the schematic diagram of the three-phase controlled rectifier circuit 72
2. Analyze the working principle, draw the pressure-current curve for load R, and the opening time of the valves 73
2.1. Select components according to load requirements 74
2.2. Drawing printed circuit board and component layout diagram 76
2.3. Component mounting and welding 76
2.4. Measure and draw the voltage waveform on the load with changing opening angle using measuring instrument77 3. Check 76
LESSON 8: SINGLE-PHASE AC VOLTAGE REGULATION, 818
1. Pure resistive load case. 818
2. Analyze the working principle, draw the voltage-current curve for load R, 79
2.1. Select components according to load requirements 83
2.2. Drawing printed circuit board and component layout diagram 912
2.3. Component mounting, welding 913
3. Check… 88
LESSON 9: THREE-PHASE ALTERNATIVE VOLTAGE REGULATION, 910
1. Draw a schematic diagram of the 930 circuit
2. Analyze the working principle, draw the voltage-current curve for load R 952
2.1. Select components according to load requirements 974
2.2. Drawing printed circuit board and component layout diagram 984
2.3. Component mounting and welding 985
2.4. Measure and draw the voltage waveform on the load using the 985 measuring instrument
3. Test 95
LESSON 10: INVERTER IN AIR CONDITIONING SYSTEM, 95
1. Concept of frequency adjustment for motor 97
2. Single phase inverter 98
2.1. Block diagram 98
2.2. Operating principle 98
2.3. Application 103
3. Three-phase voltage source inverter 107
3.1. Block diagram 104
3.2. Operating principle 104
3.2. Application 106
4. Cooling capacity control using inverter 107
5. Learn about frequency converters on air conditioning systems and cold storage. 109
6. Siemens Micromaster 440 3-phase inverter 111
6.1. Structural diagram 115
6.2. Setting parameters 118
REFERENCES 119
MODULE NAME: POWER ELECTRONICS
Module code: MD 23
Location, nature, meaning and role of the module:
+ The module is taken after students have completed basic electrical engineering, electronic engineering and basic engineering subjects and modules;
+ Is a specialized, mandatory technical module.
Module Objectives:
- Present the structure and working principles of components and circuits in power electronic circuits.
- Explain the working principle of electrical circuits
- Establish assembly process, measure and test power electronic circuits
- Proficient in using electronic circuit assembly and measurement tools
- Assemble electronic circuits according to schematic diagrams
- Ensure labor safety
- Careful, meticulous
- Neat and tidy practice area
- Know how to work in a team
Module contents:
TT number
Names of the lessons in the module | Time | ||||
Total number | Lee theory | Real onion | Check search * | ||
1 | Power semiconductor elements (Diodes, Power Transistors) | 6 | 1.25 | 4.75 | |
2 | Power semiconductor elements (Thiristor, Thyristor GTO, Triac) | 6 | 1 | 4 | 1 |
3 | Single phase uncontrolled power rectifier | 6 | 2.5 | 2.5 | 1 |
4 | Uncontrolled power rectifier 3 beam phase | 8 | 3.25 | 3.75 | 1 |
5 | Spherical 3-phase uncontrolled power rectifier | 6 | 1 | 4 | 1 |
6 | One-way controlled power rectifier phase | 6 | 1 | 5 | |
7 | 3-phase controlled power rectifier | 9 | 3 | 5 | 1 |
8 | Single phase AC voltage regulator | 6 | 1 | 5 | |
9 | Three-phase AC voltage regulator | 6 | 2 | 3 | 1 |
10 | Inverter in air conditioning system gas | 15 | 6 | 9 | |
11 | End of module test | 1 | 1 | ||
Add | 75 | 22 | 46 | 7 |