SPICE_CH2_PROBLEMS.pdf

7/30/2019 SPICE_CH2_PROBLEMS.pdf

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SPICE for Power Electronics and Electric Power

CHAPTER 2 - PROBLEMS

2.1 TheRLCcircuit of Figure P2.1 is to be simulated to calculate and plot the transient response

from 0 to 2 msec with an increment of 10 sec. The voltage across resistorR is the output. Theinput and output voltages are to be plotted on an output file. The results should also be available

for display and as hard copy using the .PROBE command.


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Answer

Time

0s 0.4ms 0.8ms 1.2ms 1.6ms 2.0ms

V(1) V(3)

-10V

-5V

0V

5V

10V

Vout

Vin


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2.3 Repeat Problem 2.1 for the circuit of Figure P2.3, where the output is the current is through

the circuit.

Answer

Time

0s 0.4ms 0.8ms 1.2ms 1.6ms 2.0ms

V(1) V(2)

-20V

-10V

0V

10V

Vout

Vin


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The circuit redrawn with nodal assignment is given by


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Time

0s 0.4ms 0.8ms 1.2ms 1.6ms 2.0ms

I(R1)

-8.0A

-7.0A

-6.0A

-5.0A

-4.0A


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Time

0s 0.4ms 0.8ms 1.2ms 1.6ms 2.0ms

V(1) V(3)

-0.4V

0V

0.4V

0.8V

1.2V

OUTPUT

INPUT


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Time

0s 0.4ms 0.8ms 1.2ms 1.6ms 2.0ms

V(1) V(2)

0V

0.4V

0.8V

1.2V

OUTPUT

INPUT


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ANSWER


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Time

0s 0.4ms 0.8ms 1.2ms 1.6ms 2.0ms

I(R1)

-2.0A

0A

2.0A

OUTPUT

I(IS)

-2.0A

0A

2.0A

INPUT

V(2)

-400V

0V

400V

SEL>>


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Time

0s 0.4ms 0.8ms 1.2ms 1.6ms 2.0ms

V(2)

-20V

0V

20V

OUTPUT

V(1)

-400V

0V

400V

SEL>>

INPUT


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SOLUTION


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Frequency

10Hz 100Hz 1.0KHz 10KHz 100KHz

VP(1,2)

-100d

0d

100d

SEL>>

PHASE ANGLE

VM(1,2)

0V

5V

10V

MAGNITUDE


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Frequency

10Hz 100Hz 1.0KHz 10KHz 100KHz

VP(2)

-1.0d

-0.5d

0d

SEL>>

PHASE ANGLE

VM(2)

1.998KV

2.000KV

2.002KV

MAGNITUDE


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Frequency

100Hz 300Hz 1.0KHz 3.0KHz 10KHz 30KHz 100KHz

VP(2)

-100d

0d

100d

SEL>>

PHASE ANGLE

VM(2)

0V

250V

500V

MAGNITUDE


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Frequency

100Hz 300Hz 1.0KHz 3.0KHz 10KHz 30KHz 100KHz

VP(2,3)

-100d

0d

100d

SEL>>

PHASE ANGLE

VM(2,3)

0V

0.5V

1.0V

MAGNITUDE

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SPICE_CH2_PROBLEMS.pdf