treadmill motor as generator.
skippy2
Registered Users, Users Awaiting Email Confirmation Posts: 5 ✭
Hello all. have not been on in a while, so my original login does not work ?
Question for ya. i have a treadmill motor, that is rated at 0 - 100 watts.
Would i be able to connect it to a Morningstar 60 amp charge controller without anything special ?
Looking into alternative power sources, and would like to use the motor as a generator.
Comments
-
Skippy, your old login should still work... If you have access to your da*@yahoo.com email account, you should be able to request a new password.
Or I can reset your password and email it to you (@yahoo or @gmail email address).
We had one member here that used a "standard" (as I recall) MPPT controller with a water turbine powered DC generator... Can your source (wind turbine, water turbine, etc.) spin fast enough to generate the minimum voltage needed to charge your battery bank/power your loads?
-BillNear San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset -
Your treadmill motor idea can maybe work if you rig it correctly. You are probably referring to the 90vdc permanent magnet motor used in home duty exercise equipment. It might even say its 'supposed' horsepower on the data label. The lighter duty ones can put out ~12 amps at 90vdc at its intended upper RPM range. The problem is what are you going to do with the DC output? You could use the output to charge a battery bank via a DC controller but don't think you are going to run that DC directly into an inverter. And you don't what to overspeed the DC motor. How do you plan to spin the treadmill motor?
The controller should be of the type used for a DC wind turbine. You will note that DC controllers may specifically state that they are not to be used with wind turbines. This could be an expensive experiment in the end.Off Grid. Two systems: 1) 2925w panels, OB VFXR3648, FM80, FNDC, Victron BMV-712, Mate3s, 240 xformer, four SimpliPHI 3.8; 2) 780w, Morningstar 30a, Grundfos switch, controller and AC/DC pump, 8 T105. Honda EU7000is w/AGS. Champion 3100. HF 4550, Miller Bobcat. -
BB. said:Or I can reset your password and email it to you (@yahoo or @gmail email address).
We had one member here that used a "standard" (as I recall) MPPT controller with a water turbine powered DC generator... Can your source (wind turbine, water turbine, etc.) spin fast enough to generate the minimum voltage needed to charge your battery bank/power your loads?
-BillThanks.If you can reset the password and send it to the gmail account, that would be great.Then i can change the old email account to the new one.
-
JRHill said:Your treadmill motor idea can maybe work if you rig it correctly. You are probably referring to the 90vdc permanent magnet motor used in home duty exercise equipment. It might even say its 'supposed' horsepower on the data label. The lighter duty ones can put out ~12 amps at 90vdc at its intended upper RPM range. The problem is what are you going to do with the DC output? You could use the output to charge a battery bank via a DC controller but don't think you are going to run that DC directly into an inverter. And you don't what to overspeed the DC motor. How do you plan to spin the treadmill motor?
The controller should be of the type used for a DC wind turbine. You will note that DC controllers may specifically state that they are not to be used with wind turbines. This could be an expensive experiment in the end........?Agreed. originally, was looking at a small wimd turbine for a generator, including the - dump load capable - controller - but remembered i have this little tread motor here to play with.I have a complete off grid 2 kw system, so generating 100 watts an hour is no biggie.Just worried about letting out the magical blue smoke 😁 -
Skippy2, your old Skippy account email and password have been updated... Check your Gmail account.
Take care,
-BillNear San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset -
skippy2 said:JRHill said:I have a complete off grid 2 kw system, so generating 100 watts an hour is no biggie.Just worried about letting out the magical blue smoke 😁
Why?!? This is not the kind of experiment for fear of blue smoke or worse and not as easy as you are thinking it to be.
I owned a business specializing in service of exercise and PT equipment. I know DC motors and circuits well and I have pondered this subject at length. In my case I have neither the wind or water to power this experiment and even if I did, It wouldn't be worth it over a cheap generator and a few jugs of fuel. But it is fun to ponder.Off Grid. Two systems: 1) 2925w panels, OB VFXR3648, FM80, FNDC, Victron BMV-712, Mate3s, 240 xformer, four SimpliPHI 3.8; 2) 780w, Morningstar 30a, Grundfos switch, controller and AC/DC pump, 8 T105. Honda EU7000is w/AGS. Champion 3100. HF 4550, Miller Bobcat. -
JRHill said:Yup.That is what i am doing.Straight dc motor out of a treadmill, i hooked a 12 volt halogen spotlight too it, and at just under a slow walk, it burned out the buld - and yes, it says on the side of the motor 0 - 100 watts dc.Kinda figured if my 60 amp morningstar could handle 2kw of solar, run my washing machine - while keeping my batteries up at 59 amps - it should be able too handle a small dc motor...Just wanted to run it by someone - that i could wire it directly to the terminals - and not fry something.
-
BB. said:Skippy2, your old Skippy account email and password have been updated... Check your Gmail account.
Take care,
-Bill
-
It worked. thank you
2 - 255W + 4 - 285W PV - Tristar 60 amp MPPT CC / 3 - 110W PV -wired for 36V- 24V Sunsaver MPPT CC / midnite bat. monitor.
1 KW PSW inverter 24V / 2.5 KW MSW inverter-24V ~ 105 AHR battery.
3 ton GSHP.- 100 gallon warm water storage / house heat - radiant floor / rad
9 -220W PV - net meter - Enphase inverters and internet reporting system.
420 Gallon rain water system for laundry.*** 6" Rocket Mass Heater with 10' bed for workshop heat.Current project is drawing up plans for a below grade Hobbit / underground home.Google "undergroundandlovinit" no spaces. -
You are very welcome Skippy.
Remember the math:
Watts = Volts * Current = Volts^2 / Resistance = Current^2 * Resistance
For example, 100 Watts charging a 12 or 24 volt battery bank:
Current = Watts / Volts = 100 Watts / 15 volts = 6.67 Amps
Current = 100 Watts / 30 volts = 3.33 Amps
However, if MPPT controller, an example of "high voltage" DC output:
100 Watts / 90 Volts output (into MPPT controller) = 1.11 Amps out of motor.
-Bill
Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset -
Agreed.I owe JRHill an apology.As soon as i posted that in full, it did not look right.0 - 100 VDC looks right.Sorry, my bad.In my experiments, i am aiming for 100 watts continuous. something to aim for. Had them confused. 😁2 - 255W + 4 - 285W PV - Tristar 60 amp MPPT CC / 3 - 110W PV -wired for 36V- 24V Sunsaver MPPT CC / midnite bat. monitor.
1 KW PSW inverter 24V / 2.5 KW MSW inverter-24V ~ 105 AHR battery.
3 ton GSHP.- 100 gallon warm water storage / house heat - radiant floor / rad
9 -220W PV - net meter - Enphase inverters and internet reporting system.
420 Gallon rain water system for laundry.*** 6" Rocket Mass Heater with 10' bed for workshop heat.Current project is drawing up plans for a below grade Hobbit / underground home.Google "undergroundandlovinit" no spaces.
Categories
- All Categories
- 219 Forum & Website
- 127 Solar Forum News and Announcements
- 1.3K Solar News, Reviews, & Product Announcements
- 189 Solar Information links & sources, event announcements
- 885 Solar Product Reviews & Opinions
- 254 Solar Skeptics, Hype, & Scams Corner
- 22.3K Solar Electric Power, Wind Power & Balance of System
- 3.5K General Solar Power Topics
- 6.7K Solar Beginners Corner
- 1K PV Installers Forum - NEC, Wiring, Installation
- 2K Advanced Solar Electric Technical Forum
- 5.5K Off Grid Solar & Battery Systems
- 424 Caravan, Recreational Vehicle, and Marine Power Systems
- 1.1K Grid Tie and Grid Interactive Systems
- 649 Solar Water Pumping
- 815 Wind Power Generation
- 621 Energy Use & Conservation
- 606 Discussion Forums/Café
- 300 In the Weeds--Member's Choice
- 74 Construction
- 124 New Battery Technologies
- 108 Old Battery Tech Discussions
- 3.8K Solar News - Automatic Feed
- 3.8K Solar Energy News RSS Feed