Hi everyone,
i want to charge a lithium ion 18650 battery pack with a water turbine in my yard.
The turbine has a bldc motor with 3 phases, my plan is to use a 3 phase rectifier and feed the output of that into a dc-dc boost converter which then goes to the BMS of the battery. I already have all of these (adequately sized) components lying around and I wanna make use of them, however three things concern me:
-) Voltage Ripple from the 3 phase rectifier, not knowing what is acceptable for the dc-dc boost converter and the following components
-) Do i need a seperate charge controller? The BMS should switch off if the battery is charged enough, the dc-dc boost converter would be set to the correct charging voltage for the pack of course.
-) The motor speed will vary, i plan on using the under voltage protection feature of the dc-dc boost converter to determine when the motor is at a useful speed for charging the batterys - good approach?
First time in an electronics forum, so if this topic is placed wrongly please move if for me.
Any help greatly appreciated.
i want to charge a lithium ion 18650 battery pack with a water turbine in my yard.
The turbine has a bldc motor with 3 phases, my plan is to use a 3 phase rectifier and feed the output of that into a dc-dc boost converter which then goes to the BMS of the battery. I already have all of these (adequately sized) components lying around and I wanna make use of them, however three things concern me:
-) Voltage Ripple from the 3 phase rectifier, not knowing what is acceptable for the dc-dc boost converter and the following components
-) Do i need a seperate charge controller? The BMS should switch off if the battery is charged enough, the dc-dc boost converter would be set to the correct charging voltage for the pack of course.
-) The motor speed will vary, i plan on using the under voltage protection feature of the dc-dc boost converter to determine when the motor is at a useful speed for charging the batterys - good approach?
First time in an electronics forum, so if this topic is placed wrongly please move if for me.
Any help greatly appreciated.