enercon exp 5

8/12/2019 Enercon Exp 5

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TECHNOLOGICAL INSTITUTE OF THE PHILIPPINES938 Aurora Boulevard, Cubao, Quezon City

COLLEGE OF ENGINEERING AND ARCHITECTUREElectrical Engineering Department

Experiment No!CHARACTERISTICS OF DC MOTOR WITH SERIES-FIELD EXCITATION

"ating#

ECE$EC%&'B&(ubmitted By#

NA)E# *ime o+ Arrival (ignature# -arcia, )onica Eunice D &.#3. am

(ubmitted *o#

ENGR. DATU AMIL HUSSIEN O. ASAKIL/n0tructor

Date 1er+ormed#Aug 28, 2.&3

Date (ubmitted#(ept &&, 2.&3


2/17


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DATA AND RESULTS:

(Fig. 1.1- Tabl !" C#a$a%&$i'&i%' !" DC M!&!$ Wi S$i' Fil E)%i&a&i!* T$ial 1 a* + ,'i*gSCADA S!"&a$


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(Fig. 1.+ / E)0$i*&al S&-,0

GRAPHICAL SKETCHES:


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INTERPRETATION OF DATA:

CHARACTERISTICGRAPH

INTERPRETATION

(peed v0 Current *e 0peed remain0 con0tant a0 current increa0e0

*or6ue v0 (peed *e 0peed remain0 con0tant a0 tor6ue increa0e0

*or6ue v0 Current /t i0 te 0ame 4it te 1ocurrent curve At +ir0t, te current increa0e0ten decrea0e0 a0 te tor6ue increa0e0

E++iciency v0 1o4er7utput

*e e++iciency increa0e0 a0 te current increa0e0

O2SER3ATION:

During te experiment, / ave ob0erved te +ollo4ing#

/n Electrical macine a00embling and di0a00embling tere i0 a proper 0e6uence to per+orm and

proper andling and care to avoid damage$brea5age to e6uipment


8/17

TECHNOLOGICAL INSTITUTE OF THE PHILIPPINES938 Aurora Boulevard, Cubao, Quezon City

COLLEGE OF ENGINEERING AND ARCHITECTUREElectrical Engineering Department

Experiment No=CHARACTERISTICS OF DC COMPUND MOTOR

>?/*@ C7)B/NED'/E;D EC/*A*/7N

"ating#

ECE$EC%&'B&(ubmitted By#

NA)E# *ime o+ Arrival (ignature# -arcia, )onica Eunice D &.#3. am

(ubmitted *o#

ENGR. DATU AMIL HUSSIEN O. ASAKIL/n0tructor

Date 1er+ormed#(ept %, 2.&3

Date (ubmitted#(ept &&, 2.&3

DISCUSSION:


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Compound4ound are u0ed 4enever it i0 nece00ary to obtain te 0peed regulation and tor6uecaracteri0tic0 tat are not obtainable 4it eiter 0unt or 0erie0 motor Becau0e many drive0 need a +airlyig 0tarting tor6ue and a con0tant 0peed under load, te compound 4ound motor i0 0uitable +or te0e

application0 (ome o+ te indu0trial application0 include drive0 +or pa00enger and +reigt elevator0,0tamping pre00e0, rolling mill0, and metal 0ear0 *e compound DC motor a0 a normal 0unt 4indingand a 0erie0 4inding on eac +ield pole 4ic a0 0o4n in 'igure =& line in DC -enerator

/n cumulative compounding, it i0 important to determine te continuity o+ te 0unt +ield circuit *eproper magnetic polarity o+ te 0unt and 0erie0 +ield mu0t be determined, 'or example, 4en acompounding motor i0 ready to be placed in operation and it mu0t be veri+ied tat te 0erie0 +ield aiding te

0unt +ield +lux /n di++erential compounding, almo0t zeropercent 0peed regulation can be obtained 4itdi++erential compound motor ?en a motor i0 connected a0 a di++erential compound macine, te 0erie0+ield oppo0e0 te 0unt +ield 0o tat te +ield +lux i0 decrea0ed a0 a load applied A0 a re0ult, te 0peedremain0 0ub0tantially con0tant 4it an increa0e load "ever0ing te "otation o+ Armature# ?en te motor4ill be u0ed +or in0tallation0 4ere te rotation mu0t be +re6uently rever0ed, 0uc a0 in elevator0, oi0t0and rail4ay0, te rotation o+ a compound4ound motor can be rever0ed by canging te direction o+ tecurrent in te +ield or te armature circuit a0 in 'igure =3 >a and 'igure =3 >b


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Rb$: *e DC compound motor i0 u0ed 4ere a compromi0e i0 needed bet4een te 0erie0and 0unt motor *e compound motor a0 better 0peed caracteri0tic0 tan te 0erie0 motor and bettertor6ue caracteri0tic0 tan te 0unt motor *e motor can be connected 0o tat te 0unt +ield and te0erie0 +ield0 are in te 0ame direction oter4i0e a0 cumulative connection *e cumulative connectionreact0 di++erently tat di++erential connection /n mo0t ca0e0, DC motor0 are driven by po4er electronicdriver0 to control te 0peed and direction


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(Fig 1.+- G$a0# !" S0 6'. C,$$*&

(Fig. 1.7 / G$a0# !" T!$8, 6'. C,$$*&

(Fig. 1.9 / G$a0# !" T!$8, 6'. S0


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TRIAL +

(Fig. +.4 /Tabl !" C#a$a%&$i'&i%' !" C!0!,* DC M!&!$ O0$a&i*g U*$ Di""$*&ial-FilE)%i&a&i!* M!

(Fig. +.1 / G$a0# !" T!$8, 6' C,$$*&


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INTERPRETATION OF DATA:

CHARACTERISTIC

GRAPH

INTERPRETATION

(peed v0 Current *e grap o+ 0peed v0 current o+ *rial & and *rial 2 are almo0t te0ame A0 te 0peed increa0e0 te current al0o increa0e0 and vice

ver0a

*or6ue v0 (peed /n *rial 2 te tor6ue remain0 con0tant a0 te 0peed increa0e0 /n *rial& tere i0 a certain variation0 in te grap but a0 te tor6ue remain0

con0tant te 0peed increa0e0 al0o

*or6ue v0 Current /t i0 te 0ame 4it te (peedCurrent curve a0 te tor6ue increa0e0te current al0o increa0e0 and vice ver0a

E++iciency v0 1o4er7utput

*e e++iciencyoutput po4er curve in *rial & a0 te e++iciency remain0con0tant te output po4er remain0 con0tant ?ile in *rial 2 te

e++iciency varie0 a0 te output po4er increa0e0

O2SER3ATION:

During te experiment, / ave ob0erved te +ollo4ing#

/n Electrical macine a00embling and di0a00embling tere i0 a proper 0e6uence to per+orm and

proper andling and care to avoid damage$brea5age to e6uipment


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UESTIONS AND ANSWERS:

& ?at 4ill appen to te output voltage i+ te +ield excitation varie0

2 /+ te zeroload voltage o+ a 0eparately excited dc generator i0 &&. volt0 at &,3!.rev$min, 4at4ill be te voltage i+ te 0peed increa0e0 to &=.. rev$min /+ te 0peed decea0e0 to&&.rev$min

3 ?at are te commercial and indu0trial application0 o+ compound0 DC motor

enercon exp 5

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