a) A 60 kW, 240 Vv, 1800 rpm separately excited de motor is controlled by a converter, as shown in Figure 2. The field current is maintained constant at I-1.5 A and the machine back emf constant is K, = 0.81 V/A rad/s. The amature resistance is R = 0.2 2 and the viscous friction constant is B = 0.3 Nm rad's. The amplification of the speed sensor is K; = 93 mV/rad's and the gain of the power controller is K; = 110. i. Determine the rated torque of the motor, Tz(s). 11. Determine the reference voltage, V-(s) to drive the motor at the rated speed.
a) A 60 kW, 240 Vv, 1800 rpm separately excited de motor is controlled by a converter, as shown in Figure 2. The field current is maintained constant at I-1.5 A and the machine back emf constant is K, = 0.81 V/A rad/s. The amature resistance is R = 0.2 2 and the viscous friction constant is B = 0.3 Nm rad's. The amplification of the speed sensor is K; = 93 mV/rad's and the gain of the power controller is K; = 110. i. Determine the rated torque of the motor, Tz(s). 11. Determine the reference voltage, V-(s) to drive the motor at the rated speed.
Introductory Circuit Analysis (13th Edition)
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Chapter1: Introduction
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power electronics and drives
![a) A 60 kW, 240 V, 1800 rpm separately excited dc motor is controlled by a converter, as shown
in Figure 2. The field current is maintained constant at I=1.5 A and the machine back emf
constant is Ky = 0.81 V/A rad/s. The armature resistance is Rm = 0.2 Q and the viscous friction
constant is B = 0.3 Nm.rad/s. The amplification of the speed sensor is K; = 93 mV/rad/s and
the gain of the power controller is K2 = 110.
i. Determine the rated torque of the motor, Tz(s).
11.
Determine the reference voltage, V-(s) to drive the motor at the rated speed.
(97,1
B(st + 1)
V,(S)
1
-(s)
Rm(5 T + 1)
E6)
K,
Figure 2](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fac26f72b-1c46-46b1-99a1-55e179d5abb2%2F9c554264-5e35-4163-9774-5e1fd7a008e3%2F2gpjj_processed.jpeg&w=3840&q=75)
Transcribed Image Text:a) A 60 kW, 240 V, 1800 rpm separately excited dc motor is controlled by a converter, as shown
in Figure 2. The field current is maintained constant at I=1.5 A and the machine back emf
constant is Ky = 0.81 V/A rad/s. The armature resistance is Rm = 0.2 Q and the viscous friction
constant is B = 0.3 Nm.rad/s. The amplification of the speed sensor is K; = 93 mV/rad/s and
the gain of the power controller is K2 = 110.
i. Determine the rated torque of the motor, Tz(s).
11.
Determine the reference voltage, V-(s) to drive the motor at the rated speed.
(97,1
B(st + 1)
V,(S)
1
-(s)
Rm(5 T + 1)
E6)
K,
Figure 2
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