Induction heating which is an efficient process of heating metals to improve their mechanical properties like ductility,tensile strength etc.,is now improved by means of connecting a frequency supply using resonant inverters. This process makes use of impedance matching inductor,dc blocking capacitor,bi-directional switches(MOSFET's) and a resonating tank circuit. THe working proncple involved here is same as that of transformer i.e., "MUTUAL INDUCTANCE".
three level diode clamp inverter. that converts any type of DC ( rectified, PV cell, battery etc.) to AC supply. we made by mosfet and ardiuno . in this ppt we present the Simulink model of a three-level inverter and the hardware presentation of the inverter.
This project is designed to control the speed of a single-phase induction motor by using operating knob, which is commonly used in home automation applications. The main advantage of these motors is their ability to operate from a single-phase power supply
this is useful for peoples interested in power quality problems and their mitigation. it provides causes, effects of voltage sag and their mitigation techniques.
three level diode clamp inverter. that converts any type of DC ( rectified, PV cell, battery etc.) to AC supply. we made by mosfet and ardiuno . in this ppt we present the Simulink model of a three-level inverter and the hardware presentation of the inverter.
This project is designed to control the speed of a single-phase induction motor by using operating knob, which is commonly used in home automation applications. The main advantage of these motors is their ability to operate from a single-phase power supply
this is useful for peoples interested in power quality problems and their mitigation. it provides causes, effects of voltage sag and their mitigation techniques.
Unit I: Introduction to Protection System:
Introduction to protection system and its elements, functions of protective relaying, protective zones, primary and backup protection, desirable qualities of protective relaying, basic terminology.
Relays:
Electromagnetic, attracted and induction type relays, thermal relay, gas actuated relay, design considerations of electromagnetic relay.
Unit-II: Relay Application and Characteristics:
Amplitude and phase comparators, over current relays, directional relays, distance relays, differential relay.
Static Relays: Comparison with electromagnetic relay, classification and their description, over current relays, directional relay, distance relays, differential relay.
Unit-III Protection of Transmission Line:
Over current protection, distance protection, pilot wire protection, carrier current protection, protection of bus, auto re-closing,
Unit-IV: Circuit Breaking:
Properties of arc, arc extinction theories, re-striking voltage transient, current chopping, resistance switching, capacitive current interruption, short line interruption, circuit breaker ratings.
Testing Of Circuit Breaker: Classification, testing station and equipments, testing procedure, direct and indirect testing.
Unit-V Apparatus Protection:
Protection of Transformer, generator and motor.
Circuit Breaker: Operating modes, selection of circuit breakers, constructional features and operation of Bulk Oil, Minimum Oil, Air Blast, SF6, Vacuum and d. c. circuit breakers.
The project is based on electric heating and its method. This project is a college project done by students. So the project might have some mistakes. Use this project as any source is restricted. The project is uploaded only because of the benefits of the students who want to get the basic idea of the powerpoint presentation of a project.
WHAT IS TRANSFORMER, DEFINE TRANSFORMER, TYPES OF TRANSFORMER, RATINGS OF TRANSFORMERS, MANUFACTURING PROCESS OF TRANSFORMER, PARTS OF TRANSFORMER, TESTS OF TRANSFORMER, COSTING OF COPPER.
MOSFET Based High Frequency Inverter for Induction Heating Equipment Using M...ijiert bestjournal
High frequency resonant converters are used widely for induction heati ng. This paper presents a resonant inverter to achieve the desired high frequency with reduced swit ching losses and simulating the power electronic converter circuit using MATLAB/SIMULINK for inducti on heating equipment. The circuit designed has the load as induction coil and high frequency electrici ty is required to heat the work piece placed within the induction coil. The output power of the load coil is v aried by changing the frequency of the inverter. The circuit uses the Power MOSFET instead of t he IGBT.The series-resonant inverter is implemented to provide Zero Current Switching (ZCS) for all the s witches at turn off conditions and Zero Voltage Switching (ZVS) at diode turn on. The main features of the proposed inverter are simple PWM control strategy and high efficiency. The operation mode of t he inverter will be evaluated corresponding to the duty cycle of the switch.
Unit I: Introduction to Protection System:
Introduction to protection system and its elements, functions of protective relaying, protective zones, primary and backup protection, desirable qualities of protective relaying, basic terminology.
Relays:
Electromagnetic, attracted and induction type relays, thermal relay, gas actuated relay, design considerations of electromagnetic relay.
Unit-II: Relay Application and Characteristics:
Amplitude and phase comparators, over current relays, directional relays, distance relays, differential relay.
Static Relays: Comparison with electromagnetic relay, classification and their description, over current relays, directional relay, distance relays, differential relay.
Unit-III Protection of Transmission Line:
Over current protection, distance protection, pilot wire protection, carrier current protection, protection of bus, auto re-closing,
Unit-IV: Circuit Breaking:
Properties of arc, arc extinction theories, re-striking voltage transient, current chopping, resistance switching, capacitive current interruption, short line interruption, circuit breaker ratings.
Testing Of Circuit Breaker: Classification, testing station and equipments, testing procedure, direct and indirect testing.
Unit-V Apparatus Protection:
Protection of Transformer, generator and motor.
Circuit Breaker: Operating modes, selection of circuit breakers, constructional features and operation of Bulk Oil, Minimum Oil, Air Blast, SF6, Vacuum and d. c. circuit breakers.
The project is based on electric heating and its method. This project is a college project done by students. So the project might have some mistakes. Use this project as any source is restricted. The project is uploaded only because of the benefits of the students who want to get the basic idea of the powerpoint presentation of a project.
WHAT IS TRANSFORMER, DEFINE TRANSFORMER, TYPES OF TRANSFORMER, RATINGS OF TRANSFORMERS, MANUFACTURING PROCESS OF TRANSFORMER, PARTS OF TRANSFORMER, TESTS OF TRANSFORMER, COSTING OF COPPER.
MOSFET Based High Frequency Inverter for Induction Heating Equipment Using M...ijiert bestjournal
High frequency resonant converters are used widely for induction heati ng. This paper presents a resonant inverter to achieve the desired high frequency with reduced swit ching losses and simulating the power electronic converter circuit using MATLAB/SIMULINK for inducti on heating equipment. The circuit designed has the load as induction coil and high frequency electrici ty is required to heat the work piece placed within the induction coil. The output power of the load coil is v aried by changing the frequency of the inverter. The circuit uses the Power MOSFET instead of t he IGBT.The series-resonant inverter is implemented to provide Zero Current Switching (ZCS) for all the s witches at turn off conditions and Zero Voltage Switching (ZVS) at diode turn on. The main features of the proposed inverter are simple PWM control strategy and high efficiency. The operation mode of t he inverter will be evaluated corresponding to the duty cycle of the switch.
Introduction to high frequency induction heating by stead fast engineers pvt ltdsteadfast123
Introduction to High Frequency Induction Heating by Stead Fast Engineers Pvt Ltd.find here Induction Furnace manufacturers,
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Electric heating is a process in which electrical energy is converted to heat. Common applications include water heating and industrial processes. An electric heater is an electrical device that converts electric current to energy.
: If You are looking to buy Bearing Induction Heater then you can find wide range of induction heater, Inventum is the leading Induction Heater manufacturers in Mumbai, suppliers and exporters in Mumbai India, we are suppliers, manufacturers, wholesalers.
Induction Heater, manufacturers, suppliers, exporters, traders, dealers, Heating Devices India
Learn about how induction heating works in industrial manufacturing processes. Induction can be used for brazing, soldering, heat treating, melting, forging and much more.
Induction heating topology with assymetrical switching schemeeSAT Journals
Abstract Domestic induction appliances require power converters that feature high efficiency and accurate power control in a wide range of operating conditions. To achieve this, modulation techniques play a key role to optimize the power converter operation. A soft-switching high-frequency resonant inverter for induction heating applications is used here. Three switches are used in this topology, one switch in the high voltage side and two switches in the low voltage side. The working of the circuit is illustrated by adopting the operating principle of the high frequency resonant inverter in periodic switching equivalent circuit mode. The topology is advantageous compared to full bridge topology since the number of switches is reduced in this topology. The switching stresses are also reduced due to the soft switching operation of the circuit. Keywords—induction heating, high frequency resonant inverter, soft switching
Demystifying Induction Furnaces | DelmerDelmer Group
Melting is the process to heat a metal at high boiling points so that it melts into a liquid form. Delmer Group melting furnaces are used to melt metal material for industrial metal forming applications or lab testing. Here we offer the best melting and casting machines in Italy at the most competitive prices. You can
This work deals with the Power Factor Corrected Single-Ended Primary Inductor Converter (PFC-SEPIC) based voltage fed closed loop full bridge series resonant induction heating system for household induction heating applications. The output voltage of the front end PFC-SEPIC converter fed series resonant inverter governs the controllers, which may be PI controller or Fuzzy Logic Controller (FLC). The analysis and comparison of time responses are presented in this paper. The PFC-SEPIC converter is used to improve the output power and the THD of source side current are compared for PI and FLC controllers. PFC-SEPIC converter maintains improved current and voltage at unity power factor through the input mains. The SEPIC converter based Voltage Fed Full Bridge Series Resonant Inverter (VFFBSRI) converts the voltage at a frequency of 10 kHz to a level suitable for household induction heating. A 1 kW SEPIC converter based VFFBSRI with RLC load is designed and simulated using MATLAB/ Simulink and hardware is fabricated.
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3. INTRODUCTION
IT IS AN ELECTRICAL
PROCESS USED FOR HEATING
METALS
NON-CONTACT HEATING
PROCESS
IT USES HIGH FREQUENCY
SUPPLY
4.
5. IT WORKS ON THE PRINCIPLE OF
MUTUAL INDUCTANCE
NEED OF HIGH FREQUENCY
INVERTER
HYSTERSIS LOSSES
HYSTERSIS LOSSES IS DIRECTLY
PROPORTIONAL TO FREQUENCY
SHOULD BE ELECTRICALLY CONDUCTIVE
MATERIAL
6. SKIN EFFECT
EDDY CURRENT LOSSES IS
DIRECTLY PROPORTIONAL TO
SQUARE OF FREQUENCY
EDDY CURRENT LOSSES
HENCE DUE TO ALL ABOVE FACTORS LARGE AMOUNT OF
HEAT IS PRODUCED
7. A SOURCE OF HIGH FREQUENCY
ELECTRICAL CIRCUIT
A WORK COIL TO GENERATE THE
ALTERNATING MAGNETIC FIELD
AN ELECTRICAL CONDUCTIVE
MATERIAL WHICH IS TO BE HEATED
8. The alternating magnetic field induces a current
flow in the conductive work piece.
The arrangement of the work coil and the work piece
can be thought of as an electrical transformer.
The work coil is like the primary where electrical
energy is fed in, and the work piece is like a single turn
secondary that is short-circuited.
This causes tremendous currents to flow through
the work piece. These are known as eddy currents.
9.
10. In addition to this, the high frequency used in
induction heating applications gives rise to a
phenomenon called skin effect.
This skin effect forces the alternating current to
flow in a thin layer towards the surface of the
workpiece.
The skin effect increases the effective resistance of
the metal to the passage of the large current.
Therefore it greatly increases the heating effect
caused by the current induced in the workpiece.
11.
12.
13. BY VARYING DC LINK VOLTAGE
BY VARYING DUTY RATIO OF DEVICES
IN THE INVERTER
BY VARYING THE OPERATING
FREQUENCY OF INVERTER
BY USING IMPEDANCE MATCHING
TRANSFORMER
14. The power processed by the inverter can be
decreased by reducing the supply voltage to
the inverter.
This can be done by running the inverter from
a variable voltage DC supply such as a
controlled rectifier using thyristors to vary the
DC supply voltage derived from the mains
supply.
Varying the DC link voltage allows full control
of the power from 0% to 100%.
15. The power processed by the inverter can be decreased
by reducing the on-time of the switches in the inverter.
Power is only sourced to the work coil in the time that
the devices are switched on.
The load current is then left to freewheel through the
devices body diodes during the deadtime when both
devices are turned off.
Varying the duty ratio of the switches also allows full
control of the power from 0% to 100%.
However, a significant drawback of this method is the
commutation of heavy currents between active devices
and their free-wheel diodes.
For this reason duty ratio control is not usually used in
high power induction heating inverters.
16. The power supplied by the inverter to the work
coil can be reduced by detuning the inverter from
the natural resonant frequency of the tank circuit
incorporating the work coil.
As the operating frequency of the inverter is
moved away from the resonant frquency of the
tank circuit, there is less resonant rise in the tank
circuit, and the current in the work coil diminishes.
Therefore less circulating current is induced into
the workpiece and the heating effect is reduced.
17.
18.
19.
20. ADVANTAGES :-
IT DOES NOT CONTAMINATE THE
MATERIAL BEING HEATED
IT IS AN EFFECTIVE METHOD OF HEATING
HEAT CONTROL IS EASY
WE CAN CONTROL HEAT FROM 0% TO 100%
21. DISADVANTAGES:
NON –CONDUCTIVE MATERIALS CANNOT BE
HEATED
COMPLEX CIRCUITARY
INITIAL COST IS MORE
ADAPTABILITY TO POOR
DIFFICULT TO GUARANTEE THE QUALITY OF SOME
OF THE COMPLEX SHAPES OF WORK PIECE
INTERCHANGEABILITY OF INDUCTION COIL IS POOR
22. But obviously , the advantages outweighed
the disadvantages.
Therefore, the induction heating is a better
choice of metalworking for replacing coal
heating, oil heating, gas heating, electric
cooker, electric oven heating and other heating
methods.
25. In induction cooking an induction coil in the
cook-top heats the iron base of cookware.
Copper-bottomed pans, aluminium pans and
other non-ferrous pans are generally unsuitable.
The heat induced in the base is transferred to
the food via (metal surface) conduction
Benefits of induction cookers include
efficiency, safety (the induction cook-top is not
heated itself) and speed.
Both permanently installed and portable
induction cookers are available.
26.
27. INDUCTION SEALING:
Induction heating is used in cap sealing of containers in the food
and pharmaceutical industries.
A layer of aluminum foil is placed over the bottle or jar
opening and heating by induction to fuse it to the container.
This provides a tamper-resistant seal, since altering the
contents requires breaking the foil
29. PLASTIC PROCESSING:
Induction heating is used in plastic injection molding
machines. Induction heating improves energy efficiency for
injection and extrusion processes.
Heat is directly generated in the barrel of the
machine, reducing warm-up time and energy
consumption.
The induction coil can be placed outside thermal
insulation, so it operates at low temperature and has a long
life.
The frequency used ranges from 30 kHz down to 5
kHz, decreasing for thicker barrels.
The reduction in cost of inverter equipment has made
induction heating increasingly popular.
Induction heating can also be applied to molds, offering
more even mold temperature and improved product
quality.