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Electric How to test an electric golf cart motor?

Discussion in 'Other Resources' started by OUTL4W, Dec 21, 2016.

  1. image_1829.jpg

    Series Wound Motor:
    (Series motor have series winding and thus a high armature current is same as field current.Due to which resistance of field winding is low.Core flux is linear.)

    There are 4 connections on the motor, we'll use the following as an example. A1, A2, F1 and F2. The letters could differ. Put a jumper wire from A1 to F1 so they are connected. Now jump the A2 and F2 connections with a 12 volt battery or battery charger. It does not matter which polarity. If the motor is good it will turn over.

    Shunt Wound Motor: (Shunt field are parallel and hence have low current. Therefore it have more number of turns and core gets saturated due to which flux will be constant.)

    Again there are 4 connections on the motor, we'll use the following as an example. A1, A2, F1 and F2. The letters could differ. Put a jumper wire from A1 to F1 so they are connected, and another separate jumper wire from A2 to F2. Now run a current from a 12 volt battery from the A1/F1 connection to the A2/F2 connection. It does not matter which polarity. If the motor is good it will turn over.
     
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    • Like Like x 1
  3. How do I tell if my motor is series or shunt wound? I have a 1995 ds 36v with a controller.
     
  4. There’s nothing visually different between the two that I know of but a shunt motor has the field windings connected in parallel with the armature .. and a series motor has the field windings connected in series with the armature.

    But perhaps crash test dummycrash test dummy has a better idea?
     
  5. #5 crash test dummy, Dec 18, 2018
    Last edited: Dec 18, 2018
    How to tell the difference between a Series and a Regen cart. CLUB CAR
    (4 easy ways to tell the difference - Use at least 2 of 5 to confirm.)

    1. Does the Golf Cart have a Tow/Run switch or Run/Maintenance switch? This would be under the seat. If the cart DOES have this switch, it is a Regen (Regenerative Braking) cart.
    If there is NOT a switch, then its a Series cart.
    See examples below

    Club Car
    Tow/Run Switch
    [​IMG]

    2. Series Vehicle Features
    Club Car Series Cart Features
    [​IMG][​IMG] -[​IMG]OR [​IMG]

    3. Does the motor have a speed sensor wire protruding from the end head? If the answer is YES, then it is a Regen motor.
    If there is NO speed sensor lead on the motor, then it is a Series motor.

    Club Car Regen Motor
    [​IMG]
    4. Are there 2 smaller diameter (1/4-20 UNC) terminals and 2 larger diameter (5/16-18 UNC) terminals on the motor?
    Or are all 4 terminal studs on the motor the same size (5/16-18 UNC)?
    If there are 2 smaller and 2 larger terminals bolts, its a Regen motor.
    If all 4 bolts are the same size, then its a Series motor.

    [​IMG]

    5. What do the motor Field Coil Windings Look Like?
    a. Regen motors have "shunt" or "round wire" coils, usually with smaller gauge wire (12AWG - 24AWG range). Usuaully, with a large amount of turns (60 to 200+ turns) per field coil.
    b. Series motors have "flat wire" coils with larger wire sizes. Usually, the wire is rectanular in shape (cross-section). These coils have a much lower number of turns (usually 5 to 15 turns) per field coil.
    [​IMG]
    [​IMG]
    Note: A Regen cart will normally automatically slow down when you hit approximately 15 MPH going down a hill. This is for safety reasons (as not to over-spin the armature).


    EZGO CARTS
    [​IMG]
     
  6. Wow!! Lots of info , thank you !! Mine doesn’t have a tow/ run switch so I can use the series wound schematic to test it. Bought this thing as a basket case somebody gave up on. Figured it’d be a good way to learn. Thanks again, Mark
     
    • Like Like x 1
  7. Thanks, the diagram will be extremely helpful. Hopefully I can get out to the garage this weekend and get this thing moving
     
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