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ASHOK KUMAR C U, S THAMARAICHSELVAN Mr. SATISH KUMAR T , Mr. MUSTHAFA P
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Name: ASHOK KUMAR C.U. Register No: 11809105005Name: THAMARAICHSELVAN.S Register No: 11809105100
Internal Guide: Mr. MUSTHAFA. PQualification: M.EDesignation: Assistant Professor
External Guide: Mr. SATHISH KUMAR.TQualification: M.E.Designation: Project Team Leader in HAS
Abstract• Designing a Cyclo-converter using Diode rectifier and H-
bridge series resonant inverter.
• Inverter- light weight and reduced the switch count.
• Power electronics switches- MOSFET with a pair of diode in antiparallel.
• Load- RLC for obtaining a resonant frequency
• Control circuit – PIC16F877 microcontroller
• To verify these design- power circuit-MATLAB and control circuit- Keil μversion4 software.
2April 11, 2023 BE - Electrical and Electronics Engineering
Objective of the project “Design a Cyclo-Converter with RLC load” in order to get
multiple output from the single input with reduced switching loss
RLC load- for obtaining a resonant frequency of 30KHz
Voltage and current – Maintaining constant at load
Power factor – unity power factor
April 11, 2023 3BE - Electrical and Electronics Engineering
April 11, 2023 4BE - Electrical and Electronics Engineering
Existing Cyclo-Converter Circuit Diagram:
A Single input single output(SISO) system is used
April 11, 2023 BE - Electrical and Electronics Engineering 5
Proposed Cyclo-Converter Circuit Diagram
Single input multi output (SIMO) is used with wide range of frequency without switching losses
Comparison Between Proposed And Existing System
S.NO PROPOSED SYSTEM EXISTING SYSTEM
1 Single input multi output (SIMO) is used with wide range of frequency without switching losses
Single input single output(SISO) system is used
2 Obtain a variable frequency and it can be regulate and maintain
Obtain a variable frequency but cannot be regulate and maintain
3 Less physical damage More physical damage
4 RLC load is used Inductive load is used
5 Less harmonic distortion Harmonic distortion is high when compare with proposed system
6 Cost is less Cost is more
7 MOSFET with pair of diode is used to reduced the switching loss
IGBT is used which results is appreciable switching loss
8 Operate at Unity power factor Power Factor may be vary (0.85 to 0.95)
April 11, 2023 BE - Electrical and Electronics Engineering 6
Innovation / Modification
April 11, 2023 7BE - Electrical and Electronics Engineering
MOSFET with pair of diode is used- high switching speed- to regulate the voltage at load.
High Frequency series resonant bridge inverter is used to convert low frequency to high frequency
PIC16F877 microcontroller – control signal
Modules Involved• Software Required:
- MATLAB7.10a R2010
-Keil μVersion4
• Hardware Required:
- LC filter circuit
- Diode Rectifier
- MOSFET switches
- H-Bridge Series Resonant Inverter
- RLC load
- PIC16F877 microcontroller ( for control Switches)
April 11, 2023 BE - Electrical and Electronics Engineering 8
Modules Explanation
S.NO.
Component Explanations
1 MATLAB/ SIMULINK To design the Cyclo-Converter circuit and to obtain output waveform by simulation
2 Keil Software Simulate the control signal using Microcontroller PIC16F877 by developing C program
3 LC Filter Circuit Generating signals at a particular frequency, or picking out a signal at a particular frequency from a more complex signal
4 Diode Rectifier Act as RC snubber circuit, which is connected between L and C filter circuit
5 MOSFET High commutation speed and good efficiency at low voltages. It shares with the IGBT an isolated gate that makes it easy to drive.
6 H- Bridge series Resonant inverter
The H bridge with a DC supply will generate a square wave voltage waveform across the load
April 11, 2023 BE - Electrical and Electronics Engineering 9
S.No. Component Explanation
7 RLC loadConnected to load for operating under resonant condition. This load is used to find out the resonant frequency of the cycloconverter circuit
8 PIC16F877 microcontroller
Control signal- By developing a C program and simulate using Keil
April 11, 2023 BE - Electrical and Electronics Engineering 10
Contd…
Design Specification Values
April 11, 2023 BE - Electrical and Electronics Engineering 11
Ideal sinusoidal AC Voltage source.
•Peak amplitude (V) : 110V•Frequency : 50Hz•Phase angle (α) : 0•Sample time : 0
Filter Inductance (Ls ) : 1mH
Diode rectifier specification(RC snubber Circuit)
•No. of bridge arm : 2•Snubber resistance : 10kΩ•Snubber capacitance : 1mF
Filter Capacitance - 2μF
H-Bridge Series Resonant Inverter Circuit parameter:(MOSFET )
• FET resistance : 0.1Ω• Internal diode inductance : 0 H• Internal diode resistance : 0.01 Ω• Internal forward voltage : 0 V• Snubber resistance : 10KΩ
RLC circuit Branch• Resistance - 9.5Ω• Indutance - 60µH• Capacitance - 0.45 μF
April 11, 2023 BE - Electrical and Electronics Engineering 12
Design Formulae Used For Cyclo-Converter
April 11, 2023 BE - Electrical and Electronics Engineering 13
;1
)(Im_.6
)(_.5
cos_.4
tan.3
π2
α)Sin(2
π
α1VV
_.2
;
100)(.1
SO
CLjRZpedenceOutput
Z
VoIocurrentOutput
factorpower
R
X
voltageOutput
ToffTonTT
ToncycleDuty
April 11, 2023 BE - Electrical and Electronics Engineering 14
%501002
1
211)()(
;100)(
1)(
1)(
2,1
DutyCycle
msoffTonTTT
onTDutyCycle
msoffT
msonT
QQFor
H-bridge Series Resonant Inverter Design
Branch 1: For Gate signal using MOSFET
;
DESIGN CALCULATION
Q2 Must be Complement of Q1Q2 Must be Complement of Q1
• Branch 2:
April 11, 2023 BE - Electrical and Electronics Engineering 15
%401002
8.0
22.18.0)()(
;100)(
2.1)(
8.0)(
4,3
DutyCycle
msoffTonTTT
onTDutyCycle
msoffT
msonT
QQFor
Q3 Must be Complement of Q4Q3 Must be Complement of Q4
• Branch 3
April 11, 2023 BE - Electrical and Electronics Engineering 16
%201002
4.0
26.14.0)()(
;100)(
6.1)(
4.0)(
4,3
DutyCycle
msoffTonTTT
onTDutyCycle
msoffT
msonT
QQFor
Q5 Must be Complement of Q6Q5 Must be Complement of Q6
April 11, 2023 BE - Electrical and Electronics Engineering 17
S .No BRANCH NUMBER
BLOCK NAME
DUTY CYCLE(IN %)
DESIGN LOGIC CIRCUIT
1 BRANCH 1 Q1, Q2 50
2 BRANCH 2 Q3, Q4
40
3 BRANCH 3 Q5,Q6
20
LOGIC DESIGN OF H-BRIDGE SERIES RESONANT INVERTER
• RLC circuit Branch
April 11, 2023 BE - Electrical and Electronics Engineering 18
sec/3^10192
6^1045.06^1060
1
;1
;1
tanRe_tan_
_
rad
LC
CL
ceaccapacitivecereacinductive
resonanceAt
• To find Frequency and Time
April 11, 2023 BE - Electrical and Electronics Engineering 19
sec30000
11
302
3^10192
2
foT
Time
KHzfo
frequency
To determine Output Voltage and Current at load
April 11, 2023 BE - Electrical and Electronics Engineering 20
;2)^1
(2^
);1
(
;
:_
1102
)02sin(01110
π2
α)Sin(2
π
α1VV
_
SO
CLRZ
CLjRZ
Z
VoIo
MeasuredCurrent
VVo
voltageOutput
April 11, 2023 BE - Electrical and Electronics Engineering 21
AIoCurrent
Z
Z
C
C
L
L
FCHLR
125.9
110)(
5.9)(
;2)^57.1152.11(2^5.9
;57.111
;6^1045.0502
11
;52.11
;6^1060502
45.0;60;5.9
Design parameters
Inductive Reactance
Capacitive reactance
Impedence
Contd..
To Compute Power Factor
April 11, 2023 BE - Electrical and Electronics Engineering 22
)(1_
1)3015.0cos(cos_
;3015.05.9
05.0tan
5.9
05.057.1152.11
tan
unityfactorpower
factorpower
R
X
R
X
April 11, 2023 BE - Electrical and Electronics Engineering 23
Simulink Design of Proposed Cyclo-Converter Circuit diagram
Simulink Design Model Of Gate Pulse
April 11, 2023 BE - Electrical and Electronics Engineering 24
Simulation Result Of Input Source
April 11, 2023 BE - Electrical and Electronics Engineering 25
Simulation Result of DC voltage link
April 11, 2023 BE - Electrical and Electronics Engineering 26
Output Voltage at 50% duty cycle At RLC load
April 11, 2023 BE - Electrical and Electronics Engineering 27
April 11, 2023 BE - Electrical and Electronics Engineering 28
SIMULATION RESULT OF GATE PULSE
Output voltage at 40% duty Cycle
April 11, 2023 BE - Electrical and Electronics Engineering 29
Simulation Result of Current Measured at Duty Cycle 40%
April 11, 2023 BE - Electrical and Electronics Engineering 30
Overall Simulation Result
April 11, 2023 BE - Electrical and Electronics Engineering 31
Photographs of Hardware module
April 11, 2023 32BE - Electrical and Electronics Engineering
RESULTS:
• OUTPUT VOLTAGE = 110V• RESONANT FREQUENCY = 30kHz• TIME DELAY = 0.03ms• OUTPUT CURRENT = 12 A• POWER FACTOR = 1• Total Harmonic Distortion = 0.24% (by MATLAB)
April 11, 2023 BE - Electrical and Electronics Engineering 33
Applications
• High power low speed AC motor drive
• Metal heat treatment • Thermal treatment process such as forging and
casting• Electromagnetic induction based plasma generation
process• High-speed dissolution process for the new materials
and melting process of semiconductor manufacturing
April 11, 2023 BE - Electrical and Electronics Engineering 34
Future Enhancements
• By using Cycloconverter, we can develop using inverter named as Cyclo-inverter for industrial purpose
• By specifying a multi-output series-resonant high frequency inverter, an inverter is obtained fulfilling the requirements
April 11, 2023 35BE - Electrical and Electronics Engineering
Conclusion
• In this project ,we describes how to design and implement an 3 phase cycloconverter .
• The main objective- To low Frequency AC input into High Frequency AC output
• The main feature of the inverter - reduced switch count and lightweight.
• To overcome -voltage spike and high losses, we are using MOSFET as switching devices.
April 11, 2023 36BE - Electrical and Electronics Engineering
Base Paper Details
• Cyclo-Converter Type High Frequency Link Inverter For High Frequency Application By Zainal Salam, Nge Chee Lim,
April 11, 2023 BE - Electrical and Electronics Engineering 37
Publication Details
• Paper Published – ICCIAMR 2013 International Conference Vels University , Pallavaram, Chennai
April 11, 2023 BE - Electrical and Electronics Engineering 38
Literature survey• V.K Mehta and R. Mehta, Principles of Electronics(Multicolor Illustrative
Edition),Copy right-2004,2003,2002, S. Chand and Company Ltd, New Delhi. • M. H. Rashid, Power Electronics Circuits, Devices and Application 6th edition,
Copy right 2009, Prentice Hall, Inc Upper Saddle River, NJ. • A. K. Chattopadhyay, ‘‘Cycloconverters and cycloconverter-fed drives—A
Review.’’ J. Indian Inst. Sci.• T. J. Rao, ‘‘Simplified control electronics for a practical cycloconverter.’’ Int. J.
Electronics• B. R. Pelly, Thyristor Phase-Controlled Converters and Cycloconverters, John
Wiley, New York, 1971• J. Davies and P. Simpson, Induction Heating Handbook. New York McCraw
Hill (U.K.) Limited.• Vineeta Agarwal and Sachin Nema, “Resonant AC to AC”, ISIE, 20-23 June,
2005, Vol.2, Dubrovnik, Croatia,
April 11, 2023 39BE - Electrical and Electronics Engineering
Thank you
April 11, 2023 40BE - Electrical and Electronics Engineering
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