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Posted about 5 years ago

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I have a simple DC motor with a gearbox that I need to extract the maximum power from to partially charge a super capacitor. The torque available to turn the gear is fixed and I cannot add more gears to it. This project is to maximize the power efficiency between a geared motor and a supercap and calulate the values of all components in this circuit. I already have both a single schottky diode and a schottky diode rectifier, but it seems there is an impedance mismatch, the capacitor does not get charged quickly enough, and not all the mechanical power is used. I would like a tested circuit design, and possibly a formula proving this is the optimal circuit. Approximate specs, I will give the exact specs in PM: A very small DC gearbox motor produces about 3v, 170ma on a completely shortened circuit, going directly into amp meter. The torque force is about 2kg pull, about 2cm from the center. Fixed. I would like to use the same force to charge the supercap. However, once a single diode or a rectifier is connected, the gearbox is no longer stalled, and gives way, even on a completely discharged super capacitor with very low ESR. I understand that the suepercap's resistance will raise and the amount of torque needed will be less. I am planning to use larger capacity supercap and not charge it fully. Again, the task is to show me how I can use *all* of my 2kg torque without an additional gearing. I need some details from you about the proper technique to accomplish this so I can award you this project.
Project ID: 18684866

About the project

10 proposals
Remote project
Active 5 yrs ago

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10 freelancers are bidding on average $196 USD for this job
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Hello, Greetings of the day, I have gone through the description & found interesting. I have done many project related to mechanical engineering, 3D modelling, product designing, any kind of simulation, MATLAB, design analysis. I am a standard member here and a full time freelancer, so you can contact me anytime. to brief about me: I am mechanical design engineer by profession and graduate in mechanical engineering with PG in CAD/CAM, ANSYS & Solidworks. I can perform almost all kind of simulation like CFD, FEA, structural analysis etc. I have expertise in many design tools like solidworks, CATIA, ANSYS, 3DMax, Creo MATLAB etc. As i have engineering background with Nine years of industrial experience and very confident about any project related to mechanical engineering field. I have preferred freelancer badge, you can see next to my profile name. You can check my profile and portfolio:- https://www.freelancer.com/u/ashrafshekh.html My bid is negotiable and it depends on the required deliverable. Looking forward to hear from you & feel free to contact me Thanks & regards Ashraf Shaikh
$250 USD in 3 days
4.9 (82 reviews)
7.2
7.2
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Pls attach full details Professional engineer with 40 years of experience is interested.....................................
$150 USD in 5 days
4.4 (144 reviews)
6.5
6.5
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Hello, Greetings for the day, I will maximise the power efficiency of the gearbox, please come in chat and discuss about it in more details, I will be waiting for your message. I have 7 years of experience in CAD/CAM/CAE. Please visit my profile to see my past work and reviews. I have expertise in Solidworks, Catia, ANSYS, Creo, Abaqus and MATLAB. Looking forward to hear from you soon. Feel free to contact me. Thanks & Regards, Irfan Shekh
$250 USD in 3 days
4.6 (40 reviews)
5.9
5.9
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i am engineer working in the area of design of gear box and motors I can work on the project of motor Please share details of work
$155 USD in 7 days
4.4 (35 reviews)
6.0
6.0
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Hi there, Have read and understood your requirements. Have wide scope and understanding in power electronics and electrical machines. I will help you design and develop all remaining system components . I will also deliver all source files including circuits schematics. Thank you
$222 USD in 7 days
4.7 (9 reviews)
4.5
4.5
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I am an electrical engineer, MSC in applied mathematics, MSC in power systems, PHD. Control and automation. I can make your problem at any level, in my proposal, I can offer you additional extras. with 23 years of experience. I can improve your proposal, with a mutual agreement. I have worked as heads of automation engineers, processes in several machine design management companies and industrial production plants. We can discuss the details of your needs in the chat. I'm interested in your project Atte. ING. Luis Moreno
$250 USD in 10 days
3.9 (3 reviews)
2.5
2.5
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hey hopefully you will be fine i can do your project i have read all the information you provided and i will provide you a quality of my work i have completed my masters in electrical engineering now working in very well known university as a lab engineer and i can resolve your problem do contact me my work will admire you. I am the most feasible person for your project because have very good command on matlab .
$200 USD in 3 days
5.0 (1 review)
1.7
1.7
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Hello! I'm an Electrical Engineer. I believe that I am the freelancer that you are looking for. Please send me a private message, I have huge experience in electric circuits.
$130 USD in 10 days
5.0 (1 review)
1.1
1.1

About the client

Flag of UNITED STATES
Brooklyn, United States
5.0
9
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Member since Dec 1, 2007

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