Induction heater with safety features - abstract
Download as PPTX, PDF1 like334 views
This document proposes designing an induction heater with safety features and SD card data logging. It operates based on Faraday's and Lentz's laws of electromagnetic induction. Key features proposed include using an SD card for logging current, temperature, and status data, and shutting down the system safely if current or intelligent power module (IPM) temperature limits are exceeded. A microcontroller would control an IPM and capacitor bank to generate an induction magnetic field for heating applications. The system would be constructed as a small prototype to demonstrate basic induction heating functionality.
Induction heater with safety features - abstract
- 1. INDUCTION HEATER WITH SAFETY FEATURES AND SD CARD DATA LOGGING By, Devangsingh Sankhala Vivek Patel Krunal Patel
- 2. Introduction Laws governing EM induction depend mainly on Faraday’s law and Lentz’s law. Lentz law explains the fact that inductive current flows inverse to the direction of changes in induction magnetic movement.
- 3. Introduction Considering Lentz law, the eddy current concept comes into picture, which implies this current opposes induction. This causes losses in devices like transformers.
- 4. Introduction The same disadvantage is converted to our advantage in the induction heating process. The current induced ultimately generates heat necessary for performing a metal operation.
- 5. Introduction Also, at higher frequency, skin effect prevails in conductors, so only a part of the conductor allows current flow, and thus heat.
- 6. Introduction
- 7. Uses at home This technology has also been used at homes for: Smaller water heaters, coupled directly to water pipe Induction rice cookers Induction stoves
- 8. Need in Industry The induction heating process is a non- contact metal heating process used in industry for the following processes: Forging Surface hardening Casting
- 9. Why Induction Heating? Non contact heating process Non polluting process Highly efficient
- 10. Why Induction Heating? Precise power, temperature and surface heat control No electric hazard compared to resistive heating coils High energy density for a shorter response time
- 11. Block diagram
- 12. Proposed Features SD card will be used for data logging Current and IPM temperature measurement for safety shutdown An arrangement shall be provided for easier change of power output to the coil
- 13. Proposed Features LCD and dedicated buttons for viewing all control status and logs A small model shall be constructed for the project to depict the basic functionality of induction based heating
- 14. Proposed Features There will be no precise temperature regulation in this system, because work on metals is performed using the color temperature in industries
- 15. Major Components Used Microcontroller with necessary peripherals Intelligent Power Module(IPM) Work coil Capacitor bank
- 16. Microcontroller There is still decision to be taken after a complete study of the microcontrollers and digital signal controllers available in the market, features and software support available. Some are short-listed as given below
- 17. General Purpose Microcontrollers Model Number Manufacturer Package Max Frequency Code space Atmega 328 8-bit Atmel SPDIL28 33 MHz 32kB MSP430G2553 16-bit mixed signal ultra-low power TI SPDIL20 16MHz 16kB PIC18F4550 8-bit Microchip DIL40 48MHz 32kB
- 18. Digital Signal Microcontroller Model Number Manufact urer Package Max Freq Code space Comments STM32F417xx STMicroel ectronics LQFP176 168 MHz 1MB ARM Cortex-M4 32b MCU+FPU, 210DMIPS, up to 1MB Flash/192+4KB RAM, USB OTG HS/FS, Ethernet, 17 timers, 24ch ADCs, 15 comm. interfaces , camera, JTAG, hardware calendar
- 19. Digital Signal Microcontroller Model Number Manufact urer Package Max Freq Code space Comments TMS320F281 2 TI LQFP176 150M Hz 128kB 32b, Harvard architecture, compatible with MATLAB cross-compiler , 45 PIE interrupts, 2 event managers, JTAG, 16-ch ADC
- 20. Digital Signal Microcontroller Model Number Manufact urer Package Max Freq Code space Comments dsPIC33EP64 MC206 Microchip LQFP100 112M Hz 128kB 16b, modified Harvard architecture, specialized PWM and interrupts for power applications, JTAG, 16-ch ADC, on- chip temperature control
- 21. Intelligent Power Module(IPM) Model number Manufacturer Rating Package Features FSAM15SH60A Fairchild 600V 15A SPM32-AA Smart power module with current and temperature detection and high-side driver FSBB20CH60F Fairchild 600V 20A SPM27-CA Power module with only high- side driver
- 22. Intelligent Power Module(IPM) Model number Manufacturer Rating Package Features BSM15GP60 Siemens 600V 20A 24 Pin EconoPI M2 Power module with only high- side driver STGIPL14K60 STMicroelectro nics 600V 14A SDIP38 Power module with high-side driver, smart shutdown, over- temperature and over-current protection ; shunt current sensor
- 23. Induction stove for homes
- 24. Industry-Grade Induction heater Reshaping Tempering
- 25. Amateur Induction heater model
- 26. References http://en.wikipedia.org/wiki/Induction_heatin g http://www.richieburnett.co.uk/indheat.html Fairchild Application Note AN9012