No, they were not. A close fit wheel can't be hub centric. The hub is for nothing more than centering assistance while the wheel is installed.
Put a roller pin through a roll of tape and run it across a surface. The roller pin running inside the tape is what would happen if the car was being...
My take would be that someone is likely confused on what happened 75 years ago.
It's likely that the 60Hz synchronous motors were just decoupled from the 25Hz generators and then used as the synchronous condensers while the 25Hz generators were scrapped or elsewise disposed of. They probably...
I believe the comment refers to the fact that the hub can't support the wheel during vehicle operation unless it is an interference fit. Otherwise, the hub would wear out the center of the wheel as it moved around inside the wheel opening.
Best case, the hub is used to center the wheel while...
Allowable voltage drop depends on the motor making enough torque to start the load and the controls staying energized. Sometimes, you can tolerate a fairly large voltage drop if you maintain the control voltage.
Pretty sure the question is about a MCP.
MCP - instantaneous trip only.
MCCB - thermal-magnetic or overload and instantaneous trip.
A MCP is the wrong protection device for a heater circuit. A MCP should only be used for protecting a motor circuit with an overload.
A diode rectifier front end feeding a DC bus capacitor doesn't care at all about about current harmonics from other drives, it doesn't care much about voltage harmonics - 5% certainly won't affect it, and it at most passes a little residual noise from the input side to the load side.
It will probably run at rated speed, or near rated speed.
Using rotor resistance, the speed of the motor depends on the rotor resistance and the load. Both are an inverse relationship. Resistance goes down then speed goes up. Load goes down then speed goes up.
With no load, the whole...
Everyone here has formed their own opinion, and none of them are favorable. My opinion is that the mechanism is a novelty joke that will never be used in a production engine, ever. It's a waste of time even pretending it's a useful engine configuration. Your patent was a waste of time and money...
You should probably ask the mfg for the reason. Only they would know. Maybe it was simply rated to match a certain application or specification.
I don't agree with harmonics or really with losses either. This will be VFD driven, so it always seems the same PWM voltage waveform.
Well, to be blunt, the idea is ridiculous. I can think of 3 big reasons, but I'm sure there are more.
#1. Two sliders and 3 connecting rods will never be more economical to build, economical to operate or have a better lifespan compared to a speed doubling gear box.
#2. Trying to start this...
You don't seem to get how power works with a motor and VFD, or through a gear reducer for that matter.
With gear reducers the power out = power in - losses.
This means your 30kW can't do 55kW unless you run it at approximately 2750rpm.
So, sure lets overspeed it to 2750rpm. This is a 1.84:1...
I wouldn't expect a 1500rpm motor to operate at 4000rpm.
Find a 3000rpm motor that is rated for a lower voltage than your VFD/source and then you can run it above 3000rpm while maintaining full torque. For example, 230V run with a 400V VFD. The VFD will have to be rated for the motor current...
