Two-pole parallel DC electric machine 220 V 10KW 1000 rpm has cross- section diagram as shown in Figure 21, magnetic equ

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Two Pole Parallel Dc Electric Machine 220 V 10kw 1000 Rpm Has Cross Section Diagram As Shown In Figure 21 Magnetic Equ 1 (60.23 KiB) Viewed 11 times

Two-pole parallel DC electric machine 220 V 10KW 1000 rpm has cross- section diagram as shown in Figure 21, magnetic equivalent circuit of field circuit and parameters. As shown in Figure 2-2, the field winding has resistance. Inside the windings, including 2 poles 100 2 This electrical machine has a constant k = 1000, the internal resistance of R Major and the carbon brushes has a total value of 0.2 2. 2.1 Find the voltage at armature (E) in the table below and draw a magnetization curve at the velocity. around 1000 rpm 0 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 L(A) E.(V) 2.2 Find the residual flux and the armature voltage generated by the residual flux 2.3 Determine the critical field circuit resistance 2.4 Field circuit resistance that causes an armature voltage of 220 V at no- load with the circuit drawn. mechanical connection 2.5 From item 2.4, find the voltage at the terminals. while the armature supply current at rated without considering the Armager action effect 2.6 From item 2.4, find the voltage at the terminal block. while the armature supply current at rated by Armature Reaction Me The approximate value is the field current as shown in the equation LAR) = 0.00221 2.7 Find the short-circuit current and explain why the short-circuit current is not high