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Hi
I'm currently doing a project on the efficiency of a regenerative braking test rig. I have two oscilloscope traces - the input and output current and voltages.
Channel A is Input motor current
Channel B is Output voltage - harvested during regenerative braking/overrun and stored in the capacitors
Channel C is Input motor voltage
Channel D is the Output current to the capacitors
The total capacitance is 5000uF
I have calculated the output energy recovered/stored in the capacitors as 1.756J but I am struggling to find a solution to calculating the energy in, in order to calculate the overall efficiency - can anybody help?
I have tried E=IVt but depending on where I take my time measurements, this gives me anything up to 57% efficiency - which is far higher than I was expecting.
Thanks in advance,
CT
I'm currently doing a project on the efficiency of a regenerative braking test rig. I have two oscilloscope traces - the input and output current and voltages.
Channel A is Input motor current
Channel B is Output voltage - harvested during regenerative braking/overrun and stored in the capacitors
Channel C is Input motor voltage
Channel D is the Output current to the capacitors
The total capacitance is 5000uF
I have calculated the output energy recovered/stored in the capacitors as 1.756J but I am struggling to find a solution to calculating the energy in, in order to calculate the overall efficiency - can anybody help?
I have tried E=IVt but depending on where I take my time measurements, this gives me anything up to 57% efficiency - which is far higher than I was expecting.
Thanks in advance,
CT
