High current switching circuit using MOSFET/IGBT
$10-30 USD
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I'm working on a prototype of an Electric Bike. I am trying to use regenerative energy from the electric motor during freewheeling, to charge back the battery. I want this to be semi-automated and hence I'm looking for a MOSFET/IGBT based switching circuit to achieve the same. Below is the scenario and problem statement. Check the diagrams for reference
What I have:
1. 1000W E-bike controller with throttle
2. 48V Lead Acid battery
3. Buck/Boost regulator (currently set to 54V)
How things work:
When battery is connected to controller and throttle is engaged, the controller draws power from the battery and powers the motor
When I don't engage the throttle and the vehicle is still moving, there's "regenerative" voltage at the same terminals of the controller that are connected to the battery. This regenerative voltages varies with speed.
What I wish to achieve:
1. When I engage the throttle, power should be drawn from the battery and supplied to the controller i.e. Discharge mode ([login to view URL])
2. When I don't engage the throttle and the vehicle is still moving, the output of the controller should get connected to the input of the buck/boost regulator. Output of the booster connects to the battery so that battery can be charged i.e. Charge mode ([login to view URL])
The switch S1 will enable me to switch between charge and discharge (ofcourse that can also be automated, but that's the easy part for me). The diode on the charging leg side is added to ensure current flows only in one direction to the battery.
What I expect is:
1. Circuit diagram along with components list
2. Circuit tested using simulators and results shared. This to ensure that the designed circuit indeed works as expected
This is more like a hobby project as of now and also the design will be simplistic, hence the budget is very low.
项目ID: #17761253
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