A 6-phase ∆-connected 1600 V (line-to-line), 150 kW, 50 Hz, six-pole induction drive is used in an electric car. The drive has the following parameter values in Ω/phase referred to the stator: R1 =0.334 Ω R2 =0.168 Ω Rm1 = 125 Ω X1 = 0.273 Ω X2 = 0.287 Ω Xm1 = 16.78 Ω The total friction, windage, and core losses may be assumed to be constant at Prot = 773 W, independent of load. For a slip value of s=0.015: a) Draw the equivalent circuit b) Compute the speed, output torque, power and stator current c)Determine the power factor and whether leading or lagging
A 6-phase ∆-connected 1600 V (line-to-line), 150 kW, 50 Hz, six-pole induction drive is used in an electric car. The drive has the following parameter values in Ω/phase referred to the stator: R1 =0.334 Ω R2 =0.168 Ω Rm1 = 125 Ω X1 = 0.273 Ω X2 = 0.287 Ω Xm1 = 16.78 Ω The total friction, windage, and core losses may be assumed to be constant at Prot = 773 W, independent of load. For a slip value of s=0.015: a) Draw the equivalent circuit b) Compute the speed, output torque, power and stator current c)Determine the power factor and whether leading or lagging
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Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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A 6-phase ∆-connected 1600 V (line-to-line), 150 kW, 50 Hz, six-pole induction drive
is used in an electric car. The drive has the following parameter values in Ω/phase
referred to the stator:
R1 =0.334 Ω R2 =0.168 Ω Rm1 = 125 Ω
X1 = 0.273 Ω X2 = 0.287 Ω Xm1 = 16.78 Ω
The total friction, windage, and core losses may be assumed to be constant at Prot =
773 W, independent of load. For a slip value of s=0.015:
a) Draw the equivalent circuit
b) Compute the speed, output torque, power and stator current
c)Determine the power factor and whether leading or lagging
d)Calculate the efficiency when the motor is operated at rated voltage and
frequency.
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