Hi Everyone!
I've been dong a heck of alot of research and wanted to confirm on a couple of things as I step through building a Golf Cart Controller. First of I understand I will not get it right the first time and will more then likely burn through a couple if not several hundreds of dollars before I start to geting the hang of things.
So heres my goal, After reading alot of PWM Mosfet examples I find myself to have a couple of questions and thoughts in mind. It appears a large amount of examples show that they only support the motor going in one direction and to have the mortor have a back and forth I need to build an "H" bridge type circut. Now if that's the case then the "H" Bridge examples I see normally have One MOSFET on each side. I myself need to have the ability to support a Burst of 300AMP's and a CONST value of ~50AMPs for the motor to run. Does that seem around right for a 2 HP motor? I know its hard to guess but I just wanted to confirm that I am somewhat warm.
2nd, I plan on making this controller compatible with motors with up to 700AMP's burst, and a build that can support 700 AMPS should be able to support 300 AMP's just find, The only difference would be cost, Correct?
How during the Time I am creating an "H" Bridge controller it appars the idea is that you have an uC that connects to a Driver that drives a MOSFET Drive to enable fast HIGH / LOW switching and after that the MOSFET then after that a fast switching diode to stop the motors Magnetic fields from classping and shooting a voltage back into the mosfet correct? I know this is very highlevel and it can get as granular as the traces on the PCB being able to handle the current traveling through it but I just wanted to make sure I have the general Idea.
Thanks everyone!
POSTSCRIPT: I will post some parts here shortly and see if I am getting the right idea.
I've been dong a heck of alot of research and wanted to confirm on a couple of things as I step through building a Golf Cart Controller. First of I understand I will not get it right the first time and will more then likely burn through a couple if not several hundreds of dollars before I start to geting the hang of things.
So heres my goal, After reading alot of PWM Mosfet examples I find myself to have a couple of questions and thoughts in mind. It appears a large amount of examples show that they only support the motor going in one direction and to have the mortor have a back and forth I need to build an "H" bridge type circut. Now if that's the case then the "H" Bridge examples I see normally have One MOSFET on each side. I myself need to have the ability to support a Burst of 300AMP's and a CONST value of ~50AMPs for the motor to run. Does that seem around right for a 2 HP motor? I know its hard to guess but I just wanted to confirm that I am somewhat warm.
2nd, I plan on making this controller compatible with motors with up to 700AMP's burst, and a build that can support 700 AMPS should be able to support 300 AMP's just find, The only difference would be cost, Correct?
How during the Time I am creating an "H" Bridge controller it appars the idea is that you have an uC that connects to a Driver that drives a MOSFET Drive to enable fast HIGH / LOW switching and after that the MOSFET then after that a fast switching diode to stop the motors Magnetic fields from classping and shooting a voltage back into the mosfet correct? I know this is very highlevel and it can get as granular as the traces on the PCB being able to handle the current traveling through it but I just wanted to make sure I have the general Idea.
Thanks everyone!
POSTSCRIPT: I will post some parts here shortly and see if I am getting the right idea.