All Questions
Tagged with current-limiting motor
19
questions
0
votes
1
answer
60
views
Par control in DC servomotor
How can I control the torque of a DC servo? Servo model: DS51150-180
https://i.ebayimg.com/images/g/pEkAAOSwmFNl4NkA/s-l1600.jpg
The current in a DC motor, as well as in a servo, determines the ...
1
vote
2
answers
113
views
Relay contact protection against 24V 2-pole brushed DC motor inrush current
I'm driving a 24V DC motor applied to a small gearbox. Motor control is via (2) 8A rated PCB mount relays that provide motor power as well as direction control. Motor inrush is rated at 8A for 10-20ms ...
- 11
0
votes
0
answers
85
views
PWM MOSFET choice to power large DC motor and control inrush current
I have a 4 hp, 90 VDC, 12A @ 5200 RPM treadmill motor and a 80 V, 6 Ah lithium battery.
The project is to use this motor to convert a lawn riding mower to electric using a tractor transmission and ...
- 1
0
votes
1
answer
821
views
How to limit current to a DC motor. (using Arduino and BTS7960) [closed]
I am trying to build a force feedback racing wheel. I have a 250W 24v e-bike motor which I am trying to use for this project. The problem is that the motor draws too much current at the start and also ...
- 11
-1
votes
1
answer
157
views
How to determine maximum continuous current on a DC motor?
Is there a good way to determine the maximum continous current a small DC motor can handle without breakdown?
I am working with a high school robotics team. They are using a door lock actuator to ...
1
vote
0
answers
142
views
DC motor with torque control
In general
I would like to make a circuit, where I have: a power supply (batteries), a dc motor, a button (when holding - close circuit, otherwise open) and maybe a power switch, just in case.
I would ...
- 111
1
vote
3
answers
181
views
Limit start current of high power motor
I'm working on a project that is clearly showing me that power electronics is a completely different beast.
We have a 5HP motor running on a 120Vdc battery. The motor is installed about 100ft (30m), ...
- 181
1
vote
1
answer
852
views
Current limiting a starter motor
I'm planning to try to build an electric go-kart. My idea was to use a 12V starter motor from a car to power it, since used ones are fairly cheap and easy to get. (I already have 2 of them to ...
- 11
0
votes
0
answers
125
views
IT characteristic implementation of motor protection circuit
I am trying to implement The IT - characteristic feature for motor protection device.There are 2C,5C,10C curve feature . can someone suggest me how it can be implemented in C code.
Is there any ...
- 23
0
votes
3
answers
396
views
Surge or other suppressor I can use, to prevent tool blowing fuse if blade sticks [closed]
I want to say up front, that this question involves minor modification (transient surge/current suppression) to the power supply side of a power tool. Usually I'd be the last to do anything like this (...
- 171
1
vote
1
answer
6k
views
What's the meaning of current rating of BLDC motor and it's relation to a phase peak and RMS current? [closed]
Considering battery powered BLDC motor having rated voltage and current specs, what is exact meaning of the rated "current"?
Since BLDC motor is NOT powered by a DC current (enjoy the twisted logic of ...
- 364
1
vote
1
answer
407
views
Selecting correct current limiting device [closed]
Requirement: During an external test 20W of power will be drawn from my supply circuitry for 1 minute. My mission is to implement a solution that limits the power draw to a level below 20W in under ...
1
vote
1
answer
841
views
Limiting current for high amp motors
What will happen if motor requirement due to more load is high(lets say 5A) and we limit current with current limiting circuit to lets say 2A. what will happen.. will it work without anything getting ...
- 11
0
votes
3
answers
6k
views
Proper setting of a magnetic trip breaker
I have separate interrupting devices in an MCC bucket. One is a magnetic trip-overload 250A breaker, where the lowest trip setting is 1100A. The other is an electronic device that has 3 CT's and ...
- 295
0
votes
2
answers
4k
views
Acceptable imbalance at starting of a 3-phase motor (480V)
I've read several places that the maximum acceptable imbalance of a 3 phase motor is 10%, but that's of a currently running motor. However, I have a 90kW motor that is tripping and to determine if it ...
- 295