All Questions
19
questions
0
votes
1
answer
34
views
Variable BLDC load
I need to test several BLDC motors and their ESCs, primarily to determine the motor's capability and power consumption, as well as the ESC's ability to drive the motor at higher current. Aside from ...
- 240
0
votes
2
answers
444
views
What happens when the motor torque is constant and the load torque suddenly decreases?
It is a situation where the load torque (Ta) suddenly decreases while rotating the shaft with a motor(PMSM) at a constant motor torque (Tm).
In my opinion, the rotational speed of the shaft (I-moment ...
- 13
0
votes
1
answer
72
views
How much load DC motor can move? [closed]
with 1000 rpm how much load it can move on 12v?
I want to no load of DC gear motor on 12v and 5v
0
votes
1
answer
62
views
Motor "load" for 8051 does not change based on 8051 GPIO pin
I implemented a circuit very similar to the following (original source: 8051 - Can an NPN transistor be driven?
) to control power to a vibration motor from my micro.
I made the following ...
-1
votes
1
answer
170
views
stall dc motor 12 volt for long time
hi every one i make water cooling system for dc motor 12 volt
how can i make the dc motor hot to test the system ?
whan i stall the dc motor the wires get very hot before that effect the motor
and i ...
0
votes
0
answers
33
views
Problem with AC powered system
I have a system (car simulator) which is powered by a 220Vac 60Hz. Within the system there are 6 switched sources, 4 of 24 Vdc, 1 of 12Vdc and 1 of 5Vcd. Loads 1,2 and 3 are dc motors 24vcd. Loads 4,5 ...
- 583
0
votes
3
answers
7k
views
Calculating load % of AC motors when operated at a frequency less than rated value
I have a three phase induction motor with name plate details:
frequency = 50 Hz
PF = 0.86
RPM = 1475
efficiency = 94.2
voltage = 415 V
ampere = 77 Amps
HP = 60
Now this motor is operated at 40 Hz ...
- 3
1
vote
2
answers
2k
views
How to correctly calculate load on a DC motor
What bothers me is the meaning of no load current (free current) which is the source of my problem.
I want my circuit's MCU to warn me if a motor exceeds 30% load. But how to calculate load?
There is ...
- 13
0
votes
1
answer
882
views
What is the best and cheapest load to test a variable frequency drive at full load?
what is the best and cheapest load to test a variable frequency drive (1 HP VFD) at full load?
Maybe a centrifugal pump ?
Thanks in advance
- 1
-2
votes
1
answer
67
views
How are the motor ratings required for a load calculated? [closed]
I want to calculate how much weight can be carried by dc shunt motor. Until now I did have not tried to do so, but I have lab experience in applying a braking load. I would like to know how a moving ...
1
vote
2
answers
1k
views
Simulating a DC motor with a constant friction torque
I'm trying to simulate a DC motor with simulink. The problem is that I don't know how to take a load torque into account. If the DC motor drives a wheel with constant velocity, there will be a ...
- 11
0
votes
1
answer
785
views
If a load is placed onto a DC motor, will the current increase? [duplicate]
When a load, such as a weight on string, is placed into a motors axle, will this cause the current to increase?
- 25
0
votes
2
answers
903
views
Using a Servo motor as load on a system
Can a Servo motor (or any electric motor) be used as a load on a system ? meaning can it reprisent for example a certain dead weight ?
In the picture below you can see a motor driving 3 gears, to ...
- 103
1
vote
2
answers
88
views
What sized motor could spin ~2lbs?
I am working on a prop for a film -- I have to make a sign spin in a circle (simple attachment to a motor) and have variable speed.
I know enough to wire the thing, but am having a hard time getting ...
2
votes
0
answers
525
views
Draw relation of rotation speed and output power of PMAC generator with brake resistor
I would like to draw a graph showing the relationship between rotation speed and power of an ideal Sinus PMAC generator
with a brake resistor R(load) to be defined
controlled via a 4Q Controller ...
- 21