Bas Basic ic El Elec. ec. En Engr gr. . Lab Lab EC ECS S - - PowerPoint PPT Presentation

• Dr. Prapun Suksompong

prapun@siit.tu.ac.th

1

Bas Basic ic El Elec.

• ec. En

Engr gr. . Lab Lab

EC ECS S 204 04/2 /210

Office Hours: BKD 3601-7 Tuesday 9:30-10:30 Friday 14:00-16:00

Lab 3

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 Superposition Theorem  Maximum Power Transfer

Part A

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R1 Vps1 R2 R3 I1 I3 I2 Vps2 + _ + _ + _ V1 V2 V3

R1 Vps1 R2 R3 I1 I3 I2 + _ + _ + _ V1 V2 V3 R1 R2 R3 I1 I3 I2 Vps2 + _ + _ + _ V1 V2 V3

(a) (b) (c)

A.b

4

R1 Vps1 R2 R3 I1 I3 I2 + _ + _ + _ V1 V2 V3

A

 

 

           

2 3 1 1 2 3 1 1 2 3 1 1 1 2 2 2 3 3 3

/ / / /

b A ps b ps A b A b A b b b

R R V V R R R V V V V V V V V I R V I R V I R         

A.c

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R1 R2 R3 I1 I3 I2 Vps2 + _ + _ + _ V1 V2 V3

A

 

  



   

 

       

1 3 2 2 1 3 1 2 2 3 1 1 1 2 2 2 3 3 3

/ / / /

c A ps c A c A ps c A c c b

R R V V R R R V V V V V V V V I R V I R V I R             

A.a

6                                    

1 1 1 2 2 2 1 1 1 2 2 2 3 3 3 3 3 3 a b c a b c a b c a b c a a b c b c

I I I I I I I I I V V V V V V V V V            

R1 Vps1 R2 R3 I1 I3 I2 + _ + _ + _ V1 V2 V3 R1 R2 R3 I1 I3 I2 Vps2 + _ + _ + _ V1 V2 V3

Remark: Some of these values will be negative!!

R1 Vps1 R2 R3 I1 I3 I2 Vps2 + _ + _ + _ V1 V2 V3

Part B

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2 L L L

V P R 

2 max

4

TH TH

V P R  + VL _