What kind of motor is a spoke type IPM?
What kind of motor is a spoke type IPM?
The proposed spoke-type IPM motor features a conventional three-phase stator and an innovative mechanical rotor design which is illustrated in Fig. 1. Fig. 1. (a) External motor view; (b) motor cross section at half core length.
How does a spoke type permanent magnet motor work?
In these conditions, practically all permanent magnet flux flows through the air- gap into the stator and the machine operates as a normal spoke-type IPM motor. At higher speeds, the centrifugal force acting on mobile yokes increases and prevails over the retaining force exerted by the springs.
How are spokes measured on a hub motor?
Flange Diameter: This is the diameter of the circle of spoke holes on the motor flange. It is the distance measured from the center of one hole to the center of the hole farthest away on the same side of the motor. Flange Spacing: This is the distance between the left and right spoke flanges, as measured from center to center.
What are the Code Letters for electrical motors?
Locked rotor indicating code letters electrical motors Sponsored Links NEMA – The National Electrical Manufacturer’s Association- who sets the design standards for motors, has established a NEMA Code letter designation to classify motors by the ratio of locked rotor kVA per horsepower.
What is the outer rotor and spoke type PMSM for?
This paper proposes an outer rotor and spoke-type permanent magnet synchronous motor (outer rotor spoke-type PMSM) to increase the power density compared to the inner rotor spoke-type permanent magnet synchronous motor (inner rotor spoke-type PMSM) used in washing machines.
How much torque does a Moto spoke have?
When testing the call outs from OEMs, which is typically between 27 to 36in.lbs., spokes would loosen up quite a bit throughout a moto for an average rider. Through continued testing, 48in.lbs. proved to be an exceptional torque, as the nipples didn’t loosen up throughout a single moto, and wheel components are not abused.
What happens to spokes when a wheel turns?
When a wheel turns, based on their position, spokes are constantly loaded and unloaded. For each wheel revolution such spoke strain stress arise in a repetitive manner. Little calculation tells you this cycle of stretching and flexing happens over 450 times over one-kilometre-long track.
How is tension measured on a spoke string?
If no bends in between, tension should be constant along the body (string) that transmits it and equal on both ends. Tension is measured in Newtons as 1 Newton is 1 Joule per meter while you will also notice the kilogram-force (kgF) unit to be used inherently.
