Hi Electronics Professionals
I have a problem with my home made Golf Cart
Data:
System voltage=48 volts DC
Driven motor 48 v 2600 watts Brushed Motor
System Load on start spikes to almost 120 A
System load after start on slow =60A
System Load on fast and load = 70 to 80 A
History.
A speed controller based on IGBT burns out in 20 hours of running
there is no sign of over heating on the body of the IGBT
Controller config
Pwm driver driving the IGBT
IGBT
Free Wheel Diode
Capacitor for reducing ripple effects
So it did not work
Now I am working on plan B
using 8 mosfets to fire in a sequence with the common buss for the gate and drain to load
using octocoupler to drive the mosfets at 15 v
using ardunio to drive the otocouplers in a sequence without pwn as on off system
the controlled delay will be used to control the output of the mosfet
delay change to 10 milliseconds for low speed and increase in delay for more on time till as long as the mosfets remain cold
the IRF 4110 data sheet is attached
On the gate and source end there will be an additional free wheel diode
Please Advise
Regards
Please advise
I have a problem with my home made Golf Cart
Data:
System voltage=48 volts DC
Driven motor 48 v 2600 watts Brushed Motor
System Load on start spikes to almost 120 A
System load after start on slow =60A
System Load on fast and load = 70 to 80 A
History.
A speed controller based on IGBT burns out in 20 hours of running
there is no sign of over heating on the body of the IGBT
Controller config
Pwm driver driving the IGBT
IGBT
Free Wheel Diode
Capacitor for reducing ripple effects
So it did not work
Now I am working on plan B
using 8 mosfets to fire in a sequence with the common buss for the gate and drain to load
using octocoupler to drive the mosfets at 15 v
using ardunio to drive the otocouplers in a sequence without pwn as on off system
the controlled delay will be used to control the output of the mosfet
delay change to 10 milliseconds for low speed and increase in delay for more on time till as long as the mosfets remain cold
the IRF 4110 data sheet is attached
On the gate and source end there will be an additional free wheel diode
Please Advise
Regards
Please advise
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