DC Motor question

Hi All,

I have recently finished making a small ride-in landrover for my
grandsons and have a question regarding the electric motor that drives
it. The initial 'road-test' proved excellent but was a little
dissapointing when attempting gentle uphill gradients which caused to
motor to stall so I just wanted to sound out some expert advise before
I decide on how to solve the problem.

I am using a 24volt dc Parvalux motor rated at 200w. I am currently
running the motor from a 12volt battery and the drive is geared down
to run the landrover at a comfortable walking pace.
My questions are as follows:

1. By applying half the rated voltage (12v instead of 24v) am I
reducing the power output to 100watts, or just reducing the motor
speed by half, or both?

2. Depending on the answer to Q1, if I increase the supply voltage to
24v will I need to adjust the gearing to maintain the current walking
pace speed (if the motor will be running twice as fast) and will I
have more power available to take reasonable uphill gradients?

I hope my questions make sense and that someone can help!

Regards, Martin.

.

Relevant Pages

  • Re: Variable reluctance motor drive?
    ... reluctance motor salvaged from an old PC tape drive. ... Sounds like it could be a Brushless DC Motor (BLDC) and the common is the ... BLDC are quite common in disk and tape drives, ... Each lobe's winding axis is radially oriented ...
    (comp.arch.embedded)
  • Re: Do you think NI can fix my PLL? -- Details
    ... Your brushed DC motor system has magnets attached to the case, a thingy wound with coils attached to the shaft, an amplifier that delivers current to a switch, and a switch that directs that current to the appropriate coils depending on the angle of the shaft with relation to the case. ... I didn't think seriously of attempting a linear drive for this thing simply because PWM drives are the norm, and I didn't want to mess with figuring out commutation logic when I could possibly avoid another case of reinventing the wheel. ... But seriously, isn't using minor loop synthesis and using the drive in it's intended application as a speed servo a suitable way as well? ... One also usually expects that the VCO response, ie., the frequency response of the phase, is not burdened by zeros/poles close to the desired PLL BW, so one can treat it simply as Kvco/s. ...
    (sci.electronics.design)
  • Re: Do you think NI can fix my PLL? -- Details
    ... Your brushed DC motor system has magnets attached to the case, a thingy wound with coils attached to the shaft, an amplifier that delivers current to a switch, and a switch that directs that current to the appropriate coils depending on the angle of the shaft with relation to the case. ... I didn't think seriously of attempting a linear drive for this thing simply because PWM drives are the norm, and I didn't want to mess with figuring out commutation logic when I could possibly avoid another case of reinventing the wheel. ... But seriously, isn't using minor loop synthesis and using the drive in it's intended application as a speed servo a suitable way as well? ... One also usually expects that the VCO response, ie., the frequency response of the phase, is not burdened by zeros/poles close to the desired PLL BW, so one can treat it simply as Kvco/s. ...
    (sci.electronics.design)
  • Re: Boeings Electric Taxi Motor
    ... >>>the gear leg itself and then tee it to both wheels really drives up the ... >> What makes you think the motor will be installed within the fuselage? ... However, this usually requires a larger, more expensive inverter, ...
    (rec.aviation.piloting)
  • Re: Old scanners for CNC parts?
    ... motor that drives a 10 mil endmill that cuts PCB material. ... The motor isn't all that large - it isn't a handful when extracted. ... NRA Second Amendment Task Force Charter Founder ... of the cutter and motor. ...
    (rec.crafts.metalworking)