Xây dựng bài giảng bằng tiếng anh cho môn học trang bị điện trong máy công nghiệp

CHAPTER 2 ELECTRONIC INSTRUMENTS Request : - Understand the structure, operation principles, symbols of electric instruments - Presented the functions and applications of electric instru

KHOA CƠ KHÍ CHẾ TẠO MÁY

ĐỒ ÁN TỐT NGHIỆP NGÀNH CÔNG NGHỆ CHẾ TẠO MÁY

XÂY DỰNG BÀI GIẢNG BẰNG TIẾNG ANH CHO MÔN HỌC

TRANG BỊ ĐIỆN TRONG MÁY CÔNG NGHIỆP

GVHD: ThS.TRẦN THANH LAM SVTH: LÊ QUÝ THÀNH

MSSV: 11143140 SVTH: TRẦN VĂN HIẾN MSSV: 11143053

S K L 0 0 3 9 4 9

BỘ GIÁO DỤC & ĐÀO TẠO

TRƯỜNG ĐẠI HỌC SPKT TPHCM

KHOA CƠ KHÍCHẾ TẠO MÁY

CỘNG HÒA XÃ HỘI CHỦ NGHĨA VIỆTNAM Độc Lập – Tự Do – Hạnh Phúc

NHIỆM VỤ LUẬN VĂN TỐT NGHIỆP

 Sinh viên: LÊ QUÝ THÀNH - 11143140

1 Đầu đề luận văn

2 Số liệu ,tài liệu ban đầu

- Sách tham khảo về khí cụ điện,biến tần,biến tần DELTA VFDM,PLC Step7-200

3 Nhiệm vụ:

- Tìm hiểu các loại khí cụ điện,PLC,inverter (cấu tạo,nguyên lý hoạt động,chức năng,…)

- Tìm các tài liệu tiếng anh liên quan đến đề tài

- Biên soạn bài giảng powerpoint bằng tiếng anh

- Tiến hành làm thí nghiệm trên PLC step7-200,inverter,khí cụ điện

4 Ngày giao nhiệm vụ luận văn:23-3-2015

5 Ngày hoàn thành nhiệm vụ:27-7-2015

6 Họ và tên người hướng dẫn:TRẦN THANH LAM

Nội dung và yêu cầu LVTN đã được thông qua Bộ môn

XÂY DỰNG BÀI GIẢNG BẰNG TIẾNG ANH CHO MÔN HỌC TRANG BỊ ĐIỆN TRONG

MÁY CÔNG NGHIỆP

LỜI CAM KẾT

Tên Đề Tài: “Xây Dựng Bài Giảng Môn Trang Bị Điện Trong Máy Công Nghiệp

Bằng Tiếng Anh”

chính tôi nghiên cứu và thực hiện Tôi không sao chép từ bất kỳ một bài viết nào

đã được công bố mà không trích dẫn nguồn gốc Nếu có bất kỳ một sự vi phạm nào, tôi xin chịu hoàn toàn trách nhiệm”

Tp Hồ Chí Minh, ngày 22 tháng 7 Năm 2015

Ngày nộp khoá luận tốt nghiệp (ĐATN): 21/7/2015

Lời cam kết: “Tôi xin cam đoan khoá luận tốt nghiệp (ĐATN) này là công trình do

LỜI CẢM ƠN

Trong thời gian làm đồ án tốt nghiệp, em đã nhận được nhiều sự giúp đỡ, đóng góp ý kiến và chỉ bảo nhiệt tình của thầy cô, gia đình và bạn bè

Em xin gửi lời cảm ơn chân thành đến ThS.TRẦN THANH LAM, giảng viên khoa“

Cơ Khí Chế Tạo Máy – Trường ĐH Sư Phạm Kỹ Thuật TPHCM” người đã tận tình hướng dẫn, chỉ bảo em trong suốt quá trình làm khoá luận

Em cũng xin chân thành cảm ơn các thầy cô giáo trong “Trường ĐH Sư Phạm Kỹ Thuật TPHCM” nói chung, các thầy cô trong khoa cơ khí chế tạo máy nói riêng đã dạy dỗ cho em kiến thức về các môn đại cương cũng như các môn chuyên ngành, giúp em có được cơ sở lý thuyết vững vàng và tạo điều kiện giúp đỡ em trong suốt quá trình học tập

Cuối cùng, em xin chân thành cảm ơn gia đình và bạn bè, đã luôn tạo điều kiện, quan tâm, giúp đỡ, động viên em trong suốt quá trình học tập và hoàn thành khoá luận tốt nghiệp

TPHCM, ngày 14 tháng 7 năm 2015

Sinh Viên Thực Hiện

TRẦN VĂN HIẾN

LÊ QUÝ THÀNH

TÓM TẮT ĐỒ ÁN

Đề tài:

“Xây Dựng Bài Giảng Môn Trang Bị Điện Trong Máy Công Nghiệp Bằng Tiếng Anh”

Đề tài tập trung xây dựng tài liệu môn trang bị điện bằng tiếng anh một cách đầy đủ nhất với mục tiêu cung cấp những kiến thức cơ bản và gần gủi nhất cho sinh viên về các thiết bị điện

Đồ án đươc chia thành 4 chương :

Chương 1 : Tổng Quan

- giới thiệu về đề tài , nội dung nghiên cứu , đối tượng ngyên cứu…

Chương 2 : Khí Kụ Điện

- trình bày về các loại khí cụ điện hiên nay , mục tiêu sau khi đọc người đọc có thể hiểu ,

sử dụng được các loại khí cụ này

Chương 3 : Biến Tần

- trình bày lí thuyết về biến tần ,ứng dụng thực tế cách vận hành , mục tiêu sau khi đọc song có thể vận hành được một biến tần vào công việc đơn giản

Chương 4 : PLC

- giới thiệu về PLC , cách lập trình , bài tâp ứng dụng của nó

Sau khi ngiên cứu đề tài tôi thấy đây là một đề tài rất hay nó cung cấp một cách nhìn tổng quát nhất về môn trang bị điện , và chúng tôi cũng thấy được sư hạn chế hiểu biết về nghành điện của những kỹ sư cơ khí tuy nhiên với sự giúp đở của các thầy thì chúng em cũng có thể hoàn thành giáo trình sơ khai về môn “Trang Thiết Bị Điện Trong Công Nghiệp Bằng Tiếng Anh” với hiểu biết còn hạn chế tài liệu có rất nhiều sai sót rất mong các thầy chỉ dạy thêm cho chúng em để khi ra trường chúng em không phải vác lên vai dòng chử “ KHÔNG BIẾT

GÌ ” để đi xin việc em cảm ơn rất nhiều !

Sinh viên thực hiện

NHIỆM VỤ ĐỒ ÁN i

LỜI CAM KẾT……….ii

LỜI CÁM ƠN iii

TÓM TẮT ĐỒ ÁN iv

MỤC LỤC v

DANH MỤC BẢNG BIỂU viii

DANH MỤC SƠ ĐỒ, HÌNH VẼ ix

DANH MỤC TỪ VIẾT TẮT x

CHAPTER 1 INTRODUCE viii

1.1The Urgency Of The Subject 1

1.2Practical Significance 1

1.3 Research Purposes 1

1.4Object And Scope Of Research 1

1.4.1Research Subjects 1

1.4.2Research Scope 1

1.5Research Methods 1

1.6Structural Blueprints 1

CHAPTER 2 ELECTRONIC INSTRUMENTS 2

2.1Electronic Instruments Manual Control 2

2.1.1Breaker 2

2.1.2Swivel Switch 3

2.1.3Cruise Switch 4

2.1.4Button 4

2.2Remote Electronic Instruments 5 2.2.1Relay 5

2.2.3 Relay Time 7

2.2.4Thermal Relay 8

2.2.5Contactor 9

2.3Protection Tools 9

2.3.1 Fuse 10

2.3.2 Pressure-Bowl-Cool 10

2.4Application Software 11

2.4.1Software FESTO 11

2.4.2CADe- SIMU 13

CHAPTER 3INVERTER 20

3.1 What Is Inverter ? 20

3.2 The principle of operation of the inverter 21

3.3 Parts of inverters 22

3.3.1 Rectifier (Diode) 22

3.3.2 Inverter (IGBT) 23

3.3.3 Control Part 23

3.4.1 Inverters indirectly 24

3.4.2Inverter Direct (cycloconvertor): 24

3.4.3Advantages And Disadvantages Of The Inverter And Indirect Curling 24

3.5 Application: 24

3.5Inverter Manufacturers Have In Viet Nam 26

3.6Inverter DELTA VFD007M43B 29

3.6.1 External Parts and Label 32

3.6.2Basic Wiring Diagram 33

3.6.3External Wiring 34

3.6.4Main Circuit Connection 35

3.6.5 Control Terminal Wiring (Factory Settings) 36

3.6.5Keypad 39 3.6.6Trial Run 40

3.6.7Summary Of Parameter Settings 41

3.6.8The parameter can be set during operation 41

3.6.9Capacity Formulas 59

3.6.10Application Exercises 62

CHAPTER 4 PLC 70

4 What Is PLC ? 70

4.1Composition Of PLC 71

4.2Advantages And Disadvantages Of PLC 72

4.3 Applications 72

4.4 PLC S7-200 73

4.4.1 Introduction 73

4.4.2 PLC S7-200 74

4.4.3 Hardware Structure 75

4.4.4 Connect PLC To Computer 76

4.4.5 Programming Languages S7-200 77

4.5 Step 7 –MiCROWIN 4.0 77

4.5.1 How To Open Step 7 – Micro/WIN 78

4.5.2 How to write a simple program 78

4.5.3 Downloading The Simple To PLC 79

4.5.4Running The PLC 80

4.5.5 Use Programming Simulation SIMULATOR 80

4.5.6 How To Connect The Computer To CPU : 82

4.6Finding Out Basic Commands In Step 7-micro/win4.0( LAD ) 83

4.7Some Exercises About PLC Step 7- 200 89

4.6.1Write program control motor with requirement are : 89

4.6.2The Traffic Light 91

4.6.3Program for a gameshow 93

4.6.4Write Program Control 2 Motors 94

KẾTLUẬN -ĐỀ NGHỊ 96

TÀILIỆU THAM KHẢO 96

DANH MỤC BẢNG BIỂU Table 3.1 : Explanation Of Symbols 37

Table 3.2 : Parameter Settings 41

Table 3.3 : Tool – Equipment – Supplies 62

Table 3.4 : Tool – Equipment – Supplies 64

Table 3.5 : Tool – Equipment – Supplies 66

Table 4.1 : Timer Numbersand Resolutions 87

Table 4.2 : Operation Of The Timer Instruction 87

DANH MỤC SƠ ĐỒ, HÌNH VẼ

Figure 2.1 : Breaker and Symbols 2

Figure 2.2 : Breaker and Symbols 3

Figure 2.3 : Switch Parts Of The Journey 4

Figure 2.4 : Relay 5

Figure 2.5 : Electromagnetic Relay 6

Figure 2.6 : Current Relay Error! Bookmark not defined. Figure 2.7 : Relay Time 7

Figure 2.8 : Relay Time 7

Figure 2.9 : Thermal Relay 8

Figure 2.10 : Contactor Symbol 9

Figure 2.12 : Fuse 10

Figure 2.11 : the characteristics of melting wires 10

Figure 2.14 : Interface Of Festo FluidSIM-P 11

Figure 2.15 : Extract Components And Wiring 12

Figure 2.17 : Circuit Diagrams 14

Figure 2.18 : Some basic buttons 15

Figure 2.19 : Finding out Cade-Simu software 16

Figure 2.20 : Circuit Start Direct Engine 17

Figure 2.21 : Swing Motor Circuit Sudden Form 18

Figure 2.22 : Sudden Reversal Circuit 18

Figure 2.23 : Swing Motor Circuit Using Automatic Relay Time 19

Figure 2.24 : Motor Circuit Automatic Swing By Order Of Time 19

Figure 3.1 : Diagram Inside The Inverter 20

Figure 3.2 : Detailed diagram of the inverter circuit 21

Figure 3.3 :waveform voltage and output current of the inverterError! Bookmark not defined. Figure 3.4 : Parts of inverters 22

Figure 3.5 : Diode 22

Figure 3.6 : Inverter (IGBT) 23

Figure 3.7 : Water Pump 25

Figure 3.9 : Lifting Equipment 25

Figure 3.11: Siemens Inverters 26

Figure 3.13: Lenze Inverters 27

Figure 3.14: Mitsubishi Inverter 27

Figure 3.15:Fanuc Inverter 28

Figure 3.16:Delta Inverter 28

Figure 3.17:Schneider Inverter 28

Figure 3.18 :Hitachi Inverter 29

Figure 3.19 :INVT Inverter 29

Figure 3.20 :External Parts and Labels 32

Figure 3.22 :External Wiring 34

Figure 2.23 :Main Circuit Connection 35

Figure 3.24 :Control Terminal Wiring 36

Figure 3.24 :Control Terminal Wiring 36

Figure 3.25 :Description of the Digital Keypad 39

Figure 3.26 :Circuit diagrams 63

Figure 3.27 : Motivational Circuit 64

Figure 3.29 :Circuit Diagrams 66

Figure 3.30 : Motivational circuit 66

Figure 3.32 :Circuit Diagrams 67

Figure 3.33 : Motivational circuit 69

Figure 3.35 :Startup circuit from 69

Figure 4.1 : PLC 70

Figure 4.2: Some devices are controlled by PLC 70

Figure 4.3 : Block Diagram Of PLC 71

Figure 4.4 : PLC step7-200 71

Figure 4.6 : Applications Of PLC 73

Figure 4.7 : The Type Of PLC 74

Figure 4.8 : CPU-221 and CPU-226 74

Figure 4.9 : Structure Of PLC 75

Figure 4.10 : Power Cources 76

Figure 4.11 : Connect PLC To Computer 77

Figure 4.12 :Step 7 Micro/WIN Start Window 78

Figure 4 13 : Steps Of Running Your Code On PLC 78

Figure 4.13 :How To Write A Simple Program 79

Figure 4.14 :Downloading The Simple To PLC 79

Figure 4.15 :Running The PLC 80

Figure 4.16 :Use Programming Simulation SIMULATOR 80

Figure 4.17 :Open Simulator 81

Figure 4.18 :RUN 81

Figure 4.19 :How To Connect The Computer To CPU 82

Figure 4.19 :Step 1 82

Figure 4.20 :Step 2 83

Figure 4.21 :Timing Diagram 86

Figure 4.22 :Operations Of The Counter Instructions 88

Figure 4.23 :Wiring Diagram 89

Figure 4.24 :Motivational Circuit 91

Figure 4.25 :The Traffic Light 91

CHAPTER 1 INTRODUCE

1.1 The Urgency Of The Subject

Our country is in the process of modernization of production technology Should the modern production systems and equipment - electronics for industrial plants play an important role in the control and operation of automated systems together with the strong development of electronic engineering and information technology, the equipment - electronic development has many special equipment helped power electronic systems for production activities more accurate, energy efficient and safer

1.4 Object And Scope Of Research

CHAPTER 2 ELECTRONIC INSTRUMENTS

Request :

- Understand the structure, operation principles, symbols of electric instruments

- Presented the functions and applications of electric instruments

2.1Electronic Instruments Manual Control

Electronic instruments manual controls as instruments work through the action of mechanical or manual for switching the DC circuit or AC voltage to 500V, use of simple diagrams, not required automatic and high switching frequency

2.1.1 Breaker

Breaker is the circuit breaker type of instruments - electric hand-in low voltage grid breakers are used mainly in industrial electrical and small power ranges Matt with small switching frequency

Figure 2.1 : Breaker and Symbols

2.1.2 Swivel Switch

Swivel switch is used as a kind of instrument instrument in the circuit commutation automatic small capacity, including startup circuit, reverse or change the connection from star - triangle of the electric motor (Figure 2.2)

Figure 2.2 : Breaker and Symbols

Rotating structure includes multiple coronary switch (1) linked together static contacts (2) made of brass leaf, moving contacts (3), 4-axis, 5 button, moving the fixed structure 6

Machines used in rotation with the current switches 6, 10, 15, 25, 40, and 60 A for 220V and 380V voltage, for 1, 2 and 3 pole

Switch parts of the journey : Insulation base frame

lever (3) , axis (4) , normally closed contacts

Figure 2.3 : Switch Parts Of The J

2.1.4 Button

Button as means of switching circuits with relatively small electric current, often working buttons with low voltage up to the point of it is made of silver

single-phase electric motors and three

Parts of button : button ( 1) ,

Switch Parts Of The Journey

as means of switching circuits with relatively small electric current, often working buttons with low voltage up to the point of it is made of silver-plated copper, used to control

phase electric motors and three-phase

( 1) , moving contacts (2) , Static Contactors (3)

Normally Closed Interlock

ruise switch is used to switch switch in the signal control circuit according to cruise control

Characteristics of cruise switch contacts can be open or closed when the mobile parts of the

(8) , spleen frame (5) springs (6)

as means of switching circuits with relatively small electric current, often working

plated copper, used to control

(3)

Interlock

2.2 Remote Electronic Instruments

Remote electronic instruments and instrument control processes automatically switching the engine, braking, changing speed, changing direction of rotation with special structure without participation of people

2.2.1 Relay

Relay is automatic tool used to launch a certain device or control a certain process when it impacts on a relatively small capacity the impact on a small quantity, the signal to change jumper and maintained at a certain value

- Actuators : to signal the control circuit

Relays are divided into two groups :

- Power relay : include electromagnetic relay , polarized electromagnetic relay , relay time , motor relay , induction relay

- Other relay : thermal relay , speed relay

Figure 2.4 : Relay

2.2.2 Electronic Relay

Electronic relay are working under the principle relay electromagnetic, signal receiving section is made smoking electromagnet armature close contacts on the output signal Parts of electronic relay :

Figure 2.5 : Electromagnetic Relay

a ) Current Relay

Constitute : windings (1) , springs (4) , steel lid (3) , Contactors ( 5 ) , 2 Contactors ( 6 ) ,hand (7) , graduate ( 8 ) Using the maximum current relay protection equipment against overload and switches , power line 0,2 ÷ 200 A ,

Figure 2.6 : Current Relay

Springs Windings

Armature

Insulating

Contactor

2.2.3 Relay Time

During the work of the actuator or control system, protection need a certain amount of time between the original serial, between your journey, the time for the impact signal device in this case we use time relays

Figure 2.7 : Relay Time

Classify :

- Electromagnetic relay time

- Relay time pendulum

- Relay time air

- Motor relay time

- Electronic time relay

Relay time from use of direct current electricity is used commonly in the DC circuit

Constructed electromagnetic relay time :

Figure 2.8 : Relay Time

Closed Late Open Late Closed Open Late

From cylindrical cores (3 ) , flat rectangular core (1) , private loop circuit (2) , coil ( 4) ,

lid from moving (5 ), Contactors (8) , springs (6) , springs (7)

 Advantages of this relay is simple, high reliability, long life, works in large frequency mode

 It drawback is the only work with direct current small adjustment period

2.2.4 Thermal Relay

Thermal relay electric instruments work on the basis of current thermal effects

 Parts made from cold : gas , fluid , thermistor , plate dual

 Thermo relay motor protection primarily, due to engine fire protection for overload Constitute : the heat ( 1) , plate dual (2) , necessary ( 3 ) , Jib (4) , Contactors (5 ) , lever (6)

Figure 2.9 : Thermal Relay

2.2.5 Contactor

Contactor electric instrument remote control for opening and closing the circuit often electrodynamics

Figure 2.10 : Contactor Symbol

The main part of a contactor is electromagnet coil K and system contacts

Classification

- Transmission principle: contactor shutdowns, by electromagnetic, hydraulic, pneumatic

and type contactless contactor

- Switching current form: contactor type one

2.3 Protection Tools

Protection tools to protect the motor and the control circuit of the machine from the effects

of short circuit or overload

ontactor electric instrument remote control for opening and closing the circuit often

ymbol

The main part of a contactor is electromagnet coil K and system contacts

Transmission principle: contactor shutdowns, by electromagnetic, hydraulic, pneumatic and type contactless contactor

orm: contactor type one-dimensional and revolve contactor

Protection tools to protect the motor and the control circuit of the machine from the effects

ontactor electric instrument remote control for opening and closing the circuit often

Transmission principle: contactor shutdowns, by electromagnetic, hydraulic, pneumatic

dimensional and revolve contactor

Protection tools to protect the motor and the control circuit of the machine from the effects

2.3.1 Fuse

Fuse capacitance instrument to protect electrical equipment and electrical network in case

of incidents or circuit breaker overload occurs Constitute : bark , lid and wire flow Wire flows have an important role

2.3.2 Pressure-Bowl-Cool

Also called automatic breaker or CB as electronic instruments used for automatic switching

of DC circuit and AC occur overload, short circuit, voltage drop

Figure 2.13 : principle diagram

Constitute : springs (1 ) , lever (2) , lever (3) , lid (4) , magnet ( 5 ) , springs (6 )

Figure 2.11 : the characteristics of

melting wires

Figure 2.12 : Fuse

source

windings motor

2.4 Application Software

2.4.1 Software FESTO

Festo Fluidsim been developed since 1996, to now has multiple versions

(latest version 4.2) copy righted firm Art Systems Software GmbH

a Startup Software

Figure 2.14 : Interface Of Festo FluidSIM-P

b Extract Components And Wiring

Click on the library components should take, hold the left mouse region drawing

Figure 2.15 : Extract Components And Wiring

c Run Simulation

Figure 2.15 : Run Simulation

Application Exercises

Exercise 1 : Direct Launch Engine

Request :

 24V-DC controller, signal lamp H1

 Press S2 engine operation

 Press S1 to stop the engine

Figure 2.16 : Circuit Diagrams

Operating Principle :

When the power supply to the circuit, press S2 K1 coil power and self-sustaining, while closed circuit contacts K1 side dynamics, engine operation, bright lights H1 When pressed, the K1 S1 power failure, the motor stops, H1 lights off

Exercise 2 : Motor Reversing Circuit Not Form Suddenly

Request :

 24V-DC controller, lamp H1 (clockwise), H2 (rotary reverse)

 Press S2 motor forward

 Press S3 motor reverse

 Press S1 to stop motor operation

Figure 2.17 : Circuit Diagrams

Principle of operation :

When you supply power to the controller, then press S2 K1 coil power and self-sustaining The contacts of K1 changes state from closed to open and vice versa, the contacts of K1 closed makes the engine run

When I press the coils S2 K2 electrical contacts change state K2 makes K1 outage The contacts of K1 back the original position, the engine stopped and the reverse by the contacts of K2 closes and the contacts of K1 opens K1 and K2 coils blocked by two auxiliary contacts and the motor should run in one mode only Press S1 circuit outage, the motor stops working

2.4.2 CADe- SIMU

- This software is an effective tool to make your work easier, faster and accurate, saving time for the job

- It is a circuit drawing software and industrial circuit simulation

- This is a very lightweight software and run directly without installation The software

is fully supported by the symbols used in industrial equipment such as: Power, isolation switch, 3-phase mowers, all kinds of roles, motor, the connectors of the role,

a Some Basic Buttons

Figure 2.18 : Some basic buttons

Figure 2.18 : symbols of components

Figure 2.18 : symbols of components bApplication Exercises

Finding Out Cade-Simu Software

Figure 2.19 : Finding out Cade-Simu software

Circuit Start Direct Engine

Figure 2.20 : Circuit Start Direct Engine

 the working principle :

When the power supply to the circuit, press S2 K1 coil power and self-sustaining, while closed circuit contacts K1 side dynamics, engine operation, bright lights H1 When pressed, the K1 S1 power failure, the motor stops, H1 lights off When there are problems, we act to cut electricity completely ES

Swing Motor Circuit Sudden Form

Figure 2.21 : Swing Motor Circuit Sudden Form

 The working principle

When powered 24V-DC controller, press S3, the coil K1 power and self-sustaining The contacts of K1 changes state from closed to open and vice versa, the contacts of K1 closed makes motor forward run

When we press the S4, the electric coil K2, K2 contacts make status changes K1 outage The contacts of K1 back the original position, the engine stopped and the reverse by the contacts of K2 closes and the contacts of K1 opens K1 and K2 coils blocked by two auxiliary contacts each of the buttons so the engine runs only in one mode Press S1 circuit outage, the motor stops working ES circuit protection

Sudden Reversal Circuit

Figure 2.22 : Sudden Reversal Circuit

 the working principle

When you supply power to the controller, then press S2 K1 coil power and sustaining The contacts of K1 changes state from closed to open and vice versa, the contacts of K1 closed makes the engine run

self-When I press the coils S2 K2 electrical contacts change state K2 makes K1 outage The contacts of K1 back the original position, the engine stopped and the reverse by the contacts of K2 closes and the contacts of K1 opens K1 and K2 coils blocked by two auxiliary contacts and the motor should run in one mode only Press S1 circuit outage, the motor stops working

Swing Motor Circuit Using Automatic Relay Time

Figure 2.23 : Swing Motor Circuit Using Automatic Relay Time

Motor Circuit Automatic Swing By Order Of Time

Figure 2.24 : Motor Circuit Automatic Swing By Order Of Time

 The working principle:

When the power supply control circuit, press S2 K1 coil power and self-sustaining, and the contacts of the circuit K1 closes as motivation motor forward After t (s) to the contacts of the relay time KT1 K1 status changes do take power, K2 electric rotary motor nghich.Sau t (s) next to the contacts of KT2 status changes as K2 power blackouts and K1 have made motor forward The process continues like that, when you press S1, the engine stops

CHAPTER 3INVERTER

3.1 What Is Inverter ?

The inverter is a device used to convert voltage or AC input at this frequency from a voltage or current of a different frequency at the output

Inverters are often used to control AC motor speed according to the frequency control method

in which the frequency of the power grid will change the frequency variation.Formula calculation engine speed :

Rotation Speed N = ( 1- s )

 We have 3 methods of changing speed :

- change the motor pole P

- change slip s

- change the frequency of the input voltage

Figure 3.1 : Diagram Inside The Inverter

Filter Rectifier DC

Filters

Inverters (IGPT)

3.2 The principle of operation of the inverter

First, AC power or 3 phase 1 phase is rectified and filtered into a one-dimensional flat source This step is performed by a diode bridge rectifier and capacitor Thus, the power factor of inverter system cosphi are valid regardless of the load and worth at least 0.96 This DC voltage

is converted (reverse flow) into 3-phase AC voltage symmetry This process is now done through IGBT (bipolar transistors with insulated gate) by means of pulse width modulation (PWM) Thanks to advances in microprocessor technology and semiconductor technology current capacity, switching frequency pulses can reach supersonic frequency range to reduce the noise to the engine and reduce losses in the iron core motors

Figure 3.2 : Detailed diagram of the inverter circuit

Figure 3.3 : waveform voltage and output current of the inverter

output voltage

motor currents

3.3 Parts of inverters

Composed inverter includes rectifier, inverter and controller

Figure 3.4 : Parts of inverters

3.3.1 Rectifier (Diode)

Diode bridge rectifiers are similar to the common rectifier in the power supply, including ac voltage is converted into one-dimensional After the rectifier voltage through truss voltage filter capacitor to have a flat, stable (DC bus) to supply power to the IGBT

Figure 3.5 : Diode

3.3.2 Inverter (IGBT)

Fast IGBT switching devices and high performance During the drive, click the Open IGBT is controlled in sequence to generate pulses with different widths from the DC bus voltage is stored in a capacitor

By using pulse width modulation PWM, IGBT can be turned open to the output sequence identical to the sinusoidal wave is applied on the carrier PWM can be used to generate output for the engine is identical to the sinusoidal wave This signal is used to control the speed and torque of the engine

Figure 3.6 : Inverter (IGBT)

3.3.3 Control Part

The control will be connected to the peripheral circuit receives an incoming signal to the main

IC inverter controller configuration and user settings

Part controls include:

- Main IC to process information and control the operation of the inverter

- Input analog voltage signal 4-20mA or 0-10V voltage

- Digital input: to enable the inverter runs

- Analog output: connect other peripherals to oversee the operation of the inverter

- Output number: signal production run, warning Classification Inverter

3.4.1 Inverters indirectly

In circuit containing a dimensional intermediaries Composed of indirect inverter includes rectifier with rectifier function AC voltage with fixed frequency inverter input and perform the voltage converter (or current) into a rectifier or AC voltage at the output By the structure as above, we can control the output frequency independently regardless of the frequency in

3.4.2 Inverter Direct (cycloconvertor):

In circuit no direct intermediaries Inverter Direct-Cycloconverter, creating an alternating voltage at the output with the effective value and frequency control AC voltage source with frequency and amplitude constant power supply for this inverter Inverter Direct drive used to control AC motors According to the switching process, the inverter directly be distinguished into two types: the inverter switching process dependent and inverters with forced switching process

3.4.3 Advantages And Disadvantages Of The Inverter And Indirect Curling

Inverter Direct can exchange energy with a continuous grid Especially for large capacity engines and massive

Besides power loss in inverter direct load is also less because only through a source connected to the switching element, not the element and pass through two intermediaries as in indirect inverter

Chart valve and control rules in the inverter directly to more complex indirect inverter

3.5 Application:

- Driven water pumping systems in wastewater treatment

- Application In crushing system: crushing in animal feed, cement

- Application Of changing conveyor speed

- Application Of agitation

- Compressed air system, fan

- In the mechanical system to move, lift, crane

- Replace the servo system structure

Figure 3.7 : Water PumpFigure 3.8 : Compressor

Figure 3.9 : Lifting EquipmentFigure 3.10 : Injection molding machine

3.5 Inverter Manufacturers Have In Viet Nam

Siemens, ABB, Schneider, Lens, Danfoss, Fanuc, Omron, Mitsubishi, Panasonic, Toshiba, Hitachi, LS, Parker,Osung, Delta, Shillin, Teco, Tecorp, CT, KTOP, INVT, Powtran, MKTEK,

Figure 3.13 : Lenze Inverters

 Mitsubishi Inverter

Figure 3.14 : Mitsubishi Inverter