How many poles per phase does the stator have?
How many poles per phase does the stator have?
So each phase uses 54 / 3 =18 slots, though wave-winding obscures this. Each pole uses 3 slots, so there are 18 / 3 = 6 poles.
How many Poles does a stator have?
8.1 Principle of operation Typical switched-reluctance motor. Each of the 12 stator poles carries a concentrated winding, while the eight-pole rotor has no windings or magnets.
How do you find the poles on a stator?
The polarity of the poles of an electro-magnet is determined by the direction of the current flow through the coil. Therefore, if two opposite stator electro-magnets are wound in the same direction, the polarity of the facing poles must be opposite.
When the number of slots per pole per phase equals to 3 such winding is called *?
Fractional Slot Winding: This is another type of winding which depends on the value of m. Key Point: The winding in which slots per pole per phase (m) is a fractional number is called fractional slot winding. In such a winding, the number of slots (S) must be divisible by 3.
How do you know how many Poles a 3-phase motor has?
When selecting a three phase motor, the number of poles is chosen to achieve the speed of rotation that you require. Here are two tables, one for a 50 Hz power supply and one for a 60 Hz power supply: The formula is n = 60 x f /p where n = synchronous speed; f = supply frequency & p = pairs of poles per phase.
What is pole number?
The number of pole pairs (p) or number of poles for an asynchronous motor determines the motor’s synchronous speed: Two-pole and four-pole asynchronous motors are typically used for centrifugal pumps. The rotational speed of these motors can be varied using frequency inverters.
What is slot per pole per phase?
The number of slots per pole per phase determines how the winding layout is arranged. It is also disclosing information about the winding factor and its harmonics. If the number of slots/pole/phase is an integer, the winding is called integer-slot winding.
How are slots per pole calculated?
phi = 0.15 #flux per pole in weber n = Slots/Pole #slots per pole m = n/3 #slots per pole per phase beeta = 180/n #slot angle # Calculations K_d = math.