Squirrel cage rotor A squirrel-cage rotor is the rotating part of the common squirrel-cage. Winmdi 2 9 free download software for laptop. It consists of a cylinder of steel laminations, with aluminum or copper conductors embedded in its surface. In operation, the non-rotating stator winding is connected to an power source; the alternating current in the stator produces a. The rotor winding has current induced in it by the stator field, and produces its own magnetic field. The interaction of the two magnetic fields from these two sources produces torque on the rotor. By adjusting the shape of the bars in the rotor, the speed-torque characteristics of the motor can be changed, to minimize starting current or to maximize low-speed torque, for example. Squirrel-cage induction motors are very prevalent in industry, in sizes from below one kilowatt (fractional horsepower; less than 1 hp) up to tens of megawatts (10,000s of horsepower).

Synchronous motor; Induction motor: Stator winding is similar to that of a synchronous motor. It is wound for a specific number of poles. A squirrel cage rotor or a wound rotor can be used. In squirrel cage rotor, the rotor bars are permanently short-circuited with end rings. Know about the different winding slots, lamination of the stator and its construction. Also appreciate the rugged construction of squirrel cage rotor and know the spectacular reasons for. And in the previous article on Types of Electrical Motors, we have classified Induction Motors. Slip-Ring or Wound-rotor Induction Motors.

They are simple, rugged, and self-starting, and maintain a reasonably constant speed from light load to full load, set by the frequency of the power supply and the number of poles of the stator winding. Commonly used motors in industry are usually IEC or standard frame sizes, which are interchangeable between manufacturers. This simplifies application and replacement of these motors.

Contents • • • • • • • • History [ ] described an induction machine with a two-phase stator winding and a solid copper cylindrical armature in 1885. In 1888, received a patent on a two-phase induction motor with a short-circuited copper rotor winding and a two-phase stator winding. Developments of this design became commercially important. In 1889, developed a wound-rotor induction motor, and shortly afterward the cage-type rotor winding. By the end of the 19th century induction motors were widely applied on the growing alternating-current electrical distributions systems.

Structure [ ]. Diagram of the squirrel-cage (showing only three laminations) The motor rotor shape is a cylinder mounted on a shaft. Internally it contains longitudinal conductive bars (usually made of aluminium or copper) set into grooves and connected at both ends by shorting rings forming a cage-like shape.

The name is derived from the similarity between this rings-and-bars winding and a. The solid core of the rotor is built with stacks of electrical steel laminations. Figure 3 shows one of many laminations used.

The rotor has a larger number of slots than the and must be a non-integer multiple of stator slots so as to prevent magnetic interlocking of rotor and stator teeth at the starting instant. The rotor bars may be made of either copper or aluminium. A very common structure uses aluminium poured into the rotor after the laminations are stacked. Simulink coder free download full.