Abstract
In Chap. 12, the circuit loops of the double-cage rotor were considered at the weak skin effect. In this area of the skin effect, the field penetrates relatively deeply into the body of the rotor. To describe the processes taking place in the rotor teeth regions (slot wedge, starting and working windings, and rotor slit regions), the average values of the electromagnetic parameters ρ and μ can be used in this case. Then, the model of the rotor tooth region can be represented as a four-layer system. In this chapter, the circuit loops of the double-cage rotor are considered at the strong skin effect. At the strong skin effect, the rotor tooth region is mainly characterized by the presence of the tangential leakage field in the rotor slots caused by the currents flowing in the starting and working winding bars. Therefore, in order to establish the circuit loops of the double-cage rotor and determine their impedance values, in this chapter we consider only the tangential slot leakage field.
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