What are the most common electrical problems in an electrical motor?
Winding Failures Motor windings are among the most common source of problems. Winding failures are some of the most common electric motor repair causes. Stressful mechanical, environmental, and electrical operating conditions can all cause electric motor failure.
What are the problems in motor?
Other problems that may occur with motors are water ingress and dust ingress into the stator coils or the terminal housing leading to short-circuits, soft foot motor feet are bolted down out of level), wrong motor mounting or housing type and electrical or mechanical unbalance.
How do electric motors fail?
A winding failure—which is often caused by a breakdown of the winding’s insulation—will cause a short in the motor. Common causes of winding failure include high temperature, too many starts, contamination, too much current, excessive voltage and physical damage.
What are the most common electric motor problems?
Although very reliable, some specific problems can exist. The most common problem is direct contact between the rotor shaft and sleeve bearing, causing abnormal vibration, oil discoloration and melted Babbit metal particles in lubricating oil.
Are there any problems with my electric car?
Although reliable, issues such as mounting problems, lubrication failures, overloading and other issues can shorten service lifetime.
What causes a motor to have a fluting problem?
This pitting releases small fragments of material into the oil showing up as high particle counts, high ferrous density and wear debris. This promotes accelerated wear on bearings and other moving parts. Fluting is a typical problem for large size motors (>200KW), VFD motors and vertical motors.
What causes pitting in the elements of an electric motor?
Fluting is caused by one of the following: Electromagnetic discharge (caused by the motor) Electrostatic discharge (belts, cylinders, etc.) External voltages (VFD, welding, etc.) Electric discharge can cause pitting in rolling elements as charges arc through the lubricant film from the rotating shaft to ground.
What can Mechanical Engineers do besides make cars?
There is lots for mechanical engineers to do besides cars. I did interview at NUMMI before the plant closed and Tesla took over the building. (The podcast linked is an excellent one.) Not all mechanical engineers who work on cars design the engine. In fact, most don’t.
What are the signs of car engine trouble?
With every sound, smell, and insistent light on the dashboard, we see days without a car to get to work and money flying out of our wallets like winged monkeys in little red vests and hats. Here are a few of the scariest signs of engine trouble, the likely causes.
Can a panic attack be caused by engine trouble?
Because otherwise, these things can give you a panic attack. With every sound, smell, and insistent light on the dashboard, we see days without a car to get to work and money flying out of our wallets like winged monkeys in little red vests and hats. Here are a few of the scariest signs of engine trouble, the likely causes.
What to do if you have engine trouble?
And of course, if you hear something strange, turn up the radio and drown it out. Because otherwise, these things can give you a panic attack. With every sound, smell, and insistent light on the dashboard, we see days without a car to get to work and money flying out of our wallets like winged monkeys in little red vests and hats.