I don't see why not?, I would expect any micro-controller to be capable of the task.

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Hi Nigel Goodwin,

Since any micro-controller has the ability to do the task, how do i learn so that i can program the micro-controller? As I considered as a novice to micro-controller programming. Any guideline for me, so that i can learn step by step, finally can program the micro-controller so that it can operate as firing circuit to trigger the thyristor. Thank you in advance.

 

You need to learn to program the specific micro-controller you have, you need to start simple and work up, flashing an LED is the usual first step!.

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Thank you. I will start from simple project and learn through it.

One more question, is any micro-controller includes the M68HC11 able to perform the following task: Input 3 phase power supply to the micro-controller and the micro-controller generate 6 gate pulse which use to trigger thyristors so that soft starter is achieved? Is this just the matter of programming?

 

As you're looking at very slow frequencies (50Hz or 60Hz), it should easily be possible to do it in software - but obviously choosing a device with helpful hardware could make it a simpler task.

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PIC programmer software, and PIC Tutorials at:
http://www.winpicprog.co.uk

 

International Rectifier’s IR213X series six-channel gate drivers
Application Note AN-985
Six-Output 600V MGDs
Simplify 3-Phase Motor Drives
2 of the 3 even inhibit software induced shorts.

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Since my school has the tools for programming the M68HC11, so I think i will try to use M68HC11 for this project. Why is low frequency could be easily done in software?

Thank you for the information. Is this also a micro-controller which design for motor drive? As my school provide the programming tools for M68HC11, I will be using M68HC11. Hope I can learn and complete the task within 1 week.

 

Because of the time you've got, a PIC running at 20MHz can execute 5,000,000 instructions per second - so you've got plenty of instruction cycles to play with between mains cycles.

__________________
PIC programmer software, and PIC Tutorials at:
http://www.winpicprog.co.uk

 

Thank you.

Since I decided to use M68HC11 to generate the gate pulse which use to trigger the thyristor and I going to learn the basic micro-controller programming. What resource or material is useful to me so that I can program the M68HC11 so that it can function as what I want in this project?

 

A MUST HAVE:
http://www.freescale.com/files/micro.../M68HC11RM.pdf

Haven't tried this:
http://www.feaser.com/store/syn_hc12.php

Very good:
http://www.mgtek.com/miniide/

Good:
http://www.seanet.com/%7Ekarllunt/sbasic.htm

These guys have a full line of Freescale products. Very good stuff:
http://technologicalarts.com/

After that Google is your friend.

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Futz's Microcontrollers & Robotics
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If you don't know what resources you need for the 68HC11 why would you switch from the ancient 16F84 to the hopelessly outdated 68HC11?
Why only a week to finish your project?

__________________
Bill
Smart Kits build Smart People
http://www.blueroomelectronics.com

 

Have to agree. Didn't you say you'd never programmed before? It's not gonna happen in a week unless you're some kind of genius. There's a lot of stuff to learn to get up to speed, regardless of which MCU you choose.

Maybe if you already have all the hardware you need to learn and practice, and if you go at it hard for like 18+ hours a day without a break...

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Futz's Microcontrollers & Robotics
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Thank you for all the information. Actually I have google many times for my project, but maybe i am not familiar with the project by using micro-controller, so not able to find any useful information.

I use 16F84 just because online has tutorial teach the basic of micro-controller programming, and the tutorial is using 16F84.

I would like to use the 68HC11 for this project because my school has the programmer tools for the 68HC11, and don't provide any tools for Microchip micro-controller.

For a beginner in micro-controller programming, is there able to complete this project within 1 week? Because this is the period given by my supervisor.

 

To start this project, is there I need to first choose the micro-controller I want to use and use it to learn the micro-controller programming?

Can recommend any micro-controller which common and popular today? I afraid the 68HC11 and 16F84 is too old to be found. And any hardware or software are required in aid to program the micro-controller.

 

The IR213X series six-channel gate drivers just drive the MOSFETs including bootstrap for PWM to the high side. I use a PIC 16F628A to send it the 6 inputs in the bit patterns below. TableHigh is for the PWM.

TableHigh ADDWF PCL, f ;data TableHigh for bit pattern
; moved left one. RB0 is step input
retlw b'00001100'
retlw b'00100100'
retlw b'00110000'
retlw b'00010010'
retlw b'01000010'
retlw b'01001000'


TableLow ADDWF PCL, f ;data TableLow for bit pattern
retlw b'00001000'
retlw b'00100000'
retlw b'00100000'
retlw b'00000010'
retlw b'00000010'
retlw b'00001000'

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