circuit board for controllable load
Budget: ₹1,500 – ₹12,500 INR
Task: circuit design, simulation, MPPT software, PCB production, testing. 1 pcs prototype needed with complete documentaion.
I need a working load control ciruit board with charge and discharge control operating like this:
A BLDC generator produces the electric current, The power of the device driving the generator increases and decreases according to ocean waves.
Circuit should change the load,charge the capacitor bank, and feeding a 12v dc load.
Aim: Get the highest electric power from the wave energy device in different random wave conditions like irregular waves. https://www.researchgate.net/figure/Example-of-irregular-wave_fig1_363549116
The load must be adjusted to the steepness of the waves. Steeper ascent - higher load. The load must rise sinusoidally within the half period, the capacitor is charged downwards with the energy stored by the flywheel.
The load must be regulated. Excessive load restrains the movement of the buoy. Small load make low performance.
There are 2 states:
- the buoy goes up - energy supply: there is energy for charging the capacitor bank and for turning the flywheel.
- the buoy goes down - no power supply: flywheel works, 120mm diameter, 1.35kg provides all the energy. run-off curve similar to capacitor discharge.
If specification not clear, or missing data than please contact to me and I try to answer.
Details/tested-measured data:
Test conditions: at 60 cm high wave-2.3 period time, its slope is 0.27.
The power is 30W on average, varying between 8-60W. RPM 1200-3200 average 1800 rpm
voltage: varies between 1-5 V with an average of 2.8V, between 4-14A with an average of 8.7A. I will send a graph of the measurement. A sample graph could be: 60cm-2_2s-load300w- 190kg one gear
Note: The equipment is suppressed, the extra weight moved internally was 45 kg, which can be up to +150W without weight. - In the case of steeper waves - which can be as steep as 0.75 - the speed and power would increase further. Maximum power 300W.
Generator data: BLDC MY1020 motor 2000W 48V max 4500 rpm. converted to 12V 3X3phase. In the test I use only a 1X3 phase with a diode bridge. I can measure that, and the performance was enough.
I measured the speed with an arduino panel, 8 pcs/sec
Load: 3X100W light bulb
I can measure direct current and voltage. attached graph: I only used 1 circle out of 3. https://www.youtube.com/shorts/TZt05TX2xCo
You can see the graphs here: https://www.powerfromocean.com/about-the-concept/
Charge and discharge control is also required. Capacitor charging with constant voltage. The converter is needed for all 3*3 phases. Discharge with constant voltage. Load ohmic water heater 12V 600w. (The point is that the output voltage is stable.)
Note:This is a small system, but if this small circuit works well- next project will be a 20KW version which should be ongrid converter.
I need a working load control ciruit board with charge and discharge control operating like this:
A BLDC generator produces the electric current, The power of the device driving the generator increases and decreases according to ocean waves.
Circuit should change the load,charge the capacitor bank, and feeding a 12v dc load.
Aim: Get the highest electric power from the wave energy device in different random wave conditions like irregular waves. https://www.researchgate.net/figure/Example-of-irregular-wave_fig1_363549116
The load must be adjusted to the steepness of the waves. Steeper ascent - higher load. The load must rise sinusoidally within the half period, the capacitor is charged downwards with the energy stored by the flywheel.
The load must be regulated. Excessive load restrains the movement of the buoy. Small load make low performance.
There are 2 states:
- the buoy goes up - energy supply: there is energy for charging the capacitor bank and for turning the flywheel.
- the buoy goes down - no power supply: flywheel works, 120mm diameter, 1.35kg provides all the energy. run-off curve similar to capacitor discharge.
If specification not clear, or missing data than please contact to me and I try to answer.
Details/tested-measured data:
Test conditions: at 60 cm high wave-2.3 period time, its slope is 0.27.
The power is 30W on average, varying between 8-60W. RPM 1200-3200 average 1800 rpm
voltage: varies between 1-5 V with an average of 2.8V, between 4-14A with an average of 8.7A. I will send a graph of the measurement. A sample graph could be: 60cm-2_2s-load300w- 190kg one gear
Note: The equipment is suppressed, the extra weight moved internally was 45 kg, which can be up to +150W without weight. - In the case of steeper waves - which can be as steep as 0.75 - the speed and power would increase further. Maximum power 300W.
Generator data: BLDC MY1020 motor 2000W 48V max 4500 rpm. converted to 12V 3X3phase. In the test I use only a 1X3 phase with a diode bridge. I can measure that, and the performance was enough.
I measured the speed with an arduino panel, 8 pcs/sec
Load: 3X100W light bulb
I can measure direct current and voltage. attached graph: I only used 1 circle out of 3. https://www.youtube.com/shorts/TZt05TX2xCo
You can see the graphs here: https://www.powerfromocean.com/about-the-concept/
Charge and discharge control is also required. Capacitor charging with constant voltage. The converter is needed for all 3*3 phases. Discharge with constant voltage. Load ohmic water heater 12V 600w. (The point is that the output voltage is stable.)
Note:This is a small system, but if this small circuit works well- next project will be a 20KW version which should be ongrid converter.