COMPUTERIZED SURVEY OF CURRENT INTENSITY IN SERIES RLC CIRCUIT VARYING POWER FREQUENCY " Integration...
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Transcript of COMPUTERIZED SURVEY OF CURRENT INTENSITY IN SERIES RLC CIRCUIT VARYING POWER FREQUENCY " Integration...
“COMPUTERIZED SURVEY OF CURRENT INTENSITY IN SERIES RLC CIRCUIT VARYING POWER FREQUENCY "
Integration of InnoVativE MeThodologies for ELectrical Measurements VET-ELM
Leonardo da VinciPARTNERSHIPS
DG Education and Culture
ISTITUTO TECNICO INDUSTRIALE STATALE“ALESSANDRO VOLTA”
NAPOLI
WORKING GROUPWORKING GROUP
Prof. Salvatore Avianidirigente scolastico
Prof. Biagio De Rosa vicepreside
Prof. Mariarosaria Damatoinglese
Prof. Vincenzo D’Antonioelettrotecnica/sistemi
Prof. Lomonte PaoloTDP/Impianti elettrici
Prof. Roberto Scognamiglio elettronica
Prof. Vincenzo Venerusoelettrotecnica/sistemi
Leonardo da VinciPARTNERSHIPS
DG Education and Culture
ISTITUTO TECNICO INDUSTRIALE STATALE“ALESSANDRO VOLTA”
NAPOLI
INDEX
INTRODUCTION
EDUCATIONAL OBJECTIVES OF THE MEASURE
PREREQUISITES
DESCRIPTION OF THE EXERCISE COMPONENTS AND INSTRUMENTS
Leonardo da VinciPARTNERSHIPS
DG Education and Culture
ISTITUTO TECNICO INDUSTRIALE STATALE“ALESSANDRO VOLTA”
NAPOLI
INDEX TEST RUN
THEORETICAL FORMULAS
COMPUTERIZED DEVELOPMENT OF THE MEASUREMENT RESULTS
SIMULATION WITH SOFTWARE NATIONAL INSTRUMENT “MULTISIM”
EVALUATION GRID
Leonardo da VinciPARTNERSHIPS
DG Education and Culture
ISTITUTO TECNICO INDUSTRIALE STATALE“ALESSANDRO VOLTA”
NAPOLI
INTRODUCTION
Leonardo da VinciPARTNERSHIPS
DG Education and Culture
ISTITUTO TECNICO INDUSTRIALE STATALE“ALESSANDRO VOLTA”
NAPOLI
INTRODUCTION
IN ITALY THE TEACHING OF "ELECTRICAL MEASUREMENT" AS
PART OF THE CURRICULUM OF STUDIES
" INDUSTRIAL EXPERT - ELECTRICAL AND AUTOMATION SPECIALIZAZTION"
IS NO LONGER AN AUTONOMUS SUBJECT.
THE SUBJECT’ S CONTENT IS PART OF “ELECTRICAL
ENGINEERING” INCLUDING LABORATORY HOURS DURING
WHICH STUDENTS ARE TESTED THROUGH EXERCISES.
I.T.I.S.A. Volta-Napoli
INTRODUCTION
IN PARTICULAR THE SUBJECT "AUTOMATIC ELECTRIC SYSTEMS",
HAS BEEN INTRODUCED, WHICH MOREOVER, HAS THE TASK OF
CREATING A SYNTHESIS BETWEEN THE ACQUIRED KNOWLEDGE
DURING THE ENTIRE COURSE OF STUDY, INCLUDING A
CONTINUOUS LINK WITH OTHER DISCIPLINES, FIRST OF ALL
ELECTRICAL AND ELECTRONICS ENGINEERING COMPUTING.
I.T.I.S.A. Volta-Napoli
INTRODUCTION
ON THE STRENGTH OF THESE INNOVATIONS, EVEN "ELECTRICAL
MEASUREMENT“ TEACHING HAS EXPERIENCED AN UPGRADE,
INTRODUCING ELEMENTS OF ELECTRONICS AND COMPUTERS.
HERE BELOW YOU CAN SEE AN EXAMPLE OF A "MEASURES
EXERCISE "
I.T.I.S.A. Volta-Napoli
EDUCATIONAL OBJECTIVES OF THE MEASURE
Leonardo da VinciPARTNERSHIPS
DG Education and Culture
ISTITUTO TECNICO INDUSTRIALE STATALE“ALESSANDRO VOLTA”
NAPOLI
EDUCATIONAL OBJECTIVES OF THE MEASURE
AT THE END OF THE EXERCISE STUDENTS WILL:
1. GAIN AWARENESS OF THE CONDUCT OF SIMPLE AC CIRCUITS AND OF THE PHENOMENON OF RESONANCE
2. ACQUIRE THE ABILITY TO INTEGRATE KNOWLEDGE OF THE FOLLOWING DISCIPLINES:
ELECTRIC MEASURES ELECTRONICS AUTOMATIC SYSTEMS
I.T.I.S.A. Volta-Napoli
PREREQUISITES
Leonardo da VinciPARTNERSHIPS
DG Education and Culture
ISTITUTO TECNICO INDUSTRIALE STATALE“ALESSANDRO VOLTA”
NAPOLI
PREREQUISITES
PUPILS SHOULD KNOW:
BASIC PRINCIPLES OF ALTERNATING CURRENT;
BASIC PRINCIPLES OF ELECTRICAL MEASUREMENT (MEASURES);
SOFTWARE USUALLY USED IN A PC;
SOFTWARE MICROSOFT EXCEL.
I.T.I.S.A. Volta-Napoli
DESCRIPTION OF THE EXERCISE
Leonardo da VinciPARTNERSHIPS
DG Education and Culture
ISTITUTO TECNICO INDUSTRIALE STATALE“ALESSANDRO VOLTA”
NAPOLI
DESCRIPTION OF THE EXERCISE
THE EXERCISE PLANS TO MAKE A SERIES OF CURRENT
MEASUREMENT IN ORDER TO DESCRIBE THE CONDUCT OF A
A.C. CIRCUIT WHEN POWER FREQUENCY CHANGES.
THE RESULTS ARE INPUTTED ON A PERSONAL COMPUTER, AND
TRASFERRED THROUGH FILE TO THE SOFTWARE EXCEL
FOR GRAPHIC AND ANALYTICAL PROCESSING OF DATA.
I.T.I.S.A. Volta-Napoli
DESCRIPTION OF THE EXERCISE
STEP OF WORK:
1 - DIRECT MEASUREMENT OF CURRENT IN A SERIES RLC CIRCUIT POWERED WITH VARIABLE FREQUENCY
2 - TRANSFER OF DIGITAL DATA MEASURED BY A DIGITAL MULTIMETRO ON A PERSONAL COMPUTER
3 - ANALYSIS OF THE BEHAVIOUR OF COMPONENTS AND CIRCUIT THROUGH AN EXCEL SPREADSHEET.
I.T.I.S.A. Volta-Napoli
DESCRIPTION OF THE EXERCISE
THE FOLLOWING FIGURE SHOWS THE SETUP CIRCUIT.
I.T.I.S.A. Volta-Napoli
Figure 1
C
E
R
L
COMPONENTS AND INSTRUMENTS
Leonardo da VinciPARTNERSHIPS
DG Education and Culture
ISTITUTO TECNICO INDUSTRIALE STATALE“ALESSANDRO VOLTA”
NAPOLI
COMPONENTS AND INSTRUMENTS
A FUNCTION GENERATOR WITH VARIABLE FREQUENCY FROM 10 A 20.000 Hz
A RESISTOR: 1 kOhm
AN INDUCTANCE: 100 mH
A CAPACITOR: 330 nF
DIGITAL MULTIMETER DM3051 RIGOLI COMPLETE WITH USB CONNECTION AND SOFTWARE INTERFACE
PERSONAL COMPUTER
SOFTWARE MICROSOFT EXCEL
I.T.I.S.A. Volta-Napoli
COMPONENTS AND INSTRUMENTS
DIGITAL MULTIMETER
FEATURES:
HIGH PRECISION
MULTIFUNCTIONAL
SUITABLE FOR AUTOMATIC DATA ACQUISITION
ACCESSORY WITH N. 2 SOFTWARE INTERFACE WITH PC (ULTRASENSOR AND ULTRALOGGER)
I.T.I.S.A. Volta-Napoli
COMPONENTS AND INSTRUMENTS
DIGITAL MULTIMETER
PICTURES
I.T.I.S.A. Volta-Napoli
COMPONENTS AND INSTRUMENTS
DIGITAL MULTIMETER:DATASHEET MULTIMETER
I.T.I.S.A. Volta-Napoli
COMPONENTS AND INSTRUMENTS
DIMENSIONING OF CIRCUIT COMPONENTS :
COMPONENTS HAVE BEEN CHOSEN IN ORDER TO OBTAIN A
RESONANCE FREQUENCY OF APPROXIMATELY 870 Hz AND
TO LIMIT THE CIRCUIT CURRENT TO A VALUE NOT
EXCEEDING 5 mA
I.T.I.S.A. Volta-Napoli
TEST RUN
Leonardo da VinciPARTNERSHIPS
DG Education and Culture
ISTITUTO TECNICO INDUSTRIALE STATALE“ALESSANDRO VOLTA”
NAPOLI
TEST RUN
THE CIRCUIT WILL POWERED BY A SINUSOIDAL SIGNAL VARIABLE
FREQUENCY FROM 10 TO 15000 Hz N. 25 MEASURES WILL BE MADE
FOR VALUES OF GROWING FREQUENCY.
BY INCREASING THE FREQUENCY THE CURRENTE VALUE WILL
INCREASE ACHIEVING ITS MAXIMUM VALUE AT THE RESONANCE
RATE. AFTER REACHING ITS RESONANCE RATE ITS VALUE WILL
DECREASE.
I.T.I.S.A. Volta-Napoli
TEST RUN I.T.I.S.
A. Volta-Napoli
THEORETICAL FORMULA
Leonardo da VinciPARTNERSHIPS
DG Education and Culture
ISTITUTO TECNICO INDUSTRIALE STATALE“ALESSANDRO VOLTA”
NAPOLI
THEORETICAL FORMULA
V = Z I
Z = R + j (XL – XC)
XL = 2*π*f*L
XC = 1/(2*π*C )
fr = 1/(2π*L*C )1/2
I = V / Z
I.T.I.S.A. Volta-Napoli
COMPUTERIZED DEVELOPMENT OF
THE MEASUREMENTS RESULTS
Leonardo da VinciPARTNERSHIPS
DG Education and Culture
ISTITUTO TECNICO INDUSTRIALE STATALE“ALESSANDRO VOLTA”
NAPOLI
COMPUTERIZED DEVELOPMENT OF THE MEASUREMENTS RESULTS
THE RESULTS OF THE MEASUREMENTS ARE TRANSFERRED TO THE
SOFTWARE TOOL KIT.
ONCE ACQUIRED THE RESULTS ON AN INTERCHANGE FILE,
DATA ARE INSERTED INTO AN EXCEL FILE AND PROPERLY
PROCESSED
I.T.I.S.A. Volta-Napoli
COMPUTERIZED DEVELOPMENT OF
THE MEASUREMENTS RESULTS
I.T.I.S.A. Volta-Napoli
COMPUTERIZED DEVELOPMENT OF THE MEASUREMENTS RESULTS
I.T.I.S.A. Volta-Napoli
SIMULATION WITH SOFTWARE NATIONAL
INSTRUMENT “MULTISIM”
Leonardo da VinciPARTNERSHIPS
DG Education and Culture
ISTITUTO TECNICO INDUSTRIALE STATALE“ALESSANDRO VOLTA”
NAPOLI
SIMULATION WITH SOFTWARE NATIONAL INSTRUMENT MULTISIM
FOR EDUCATIONAL USE, A “MULTISIM” SOFTWARE SIMULATION WAS
MADE, BEFORE THE LAB TESTS.
I.T.I.S.A. Volta-Napoli
SIMULATION SOFTWARE WITH NATIONAL INSTRUMENT MULTISIM
ON THE FOLLOWING PAGES WILL BE SHOWN :
1 – THE CIRCUIT DIAGRAM
2 – PERFORMANCE CHART WITH THE FUCTION OF CURRENT
INTENSITY - FREQUENCY
3 - SURVEY ON THE CHART OF THE FREQUENCY OF RESONANCE
I.T.I.S.A. Volta-Napoli
SIMULATION SOFTWARE WITH NATIONAL INSTRUMENT MULTISIM
THE CIRCUIT
DIAGRAM
I.T.I.S.A. Volta-Napoli
SIMULATION SOFTWARE WITH NATIONAL INSTRUMENT MULTISIM
PERFORMANCE
CHART WITH
THE FUNCTION
OF CURRENT
INTENSITY/
FREQUENCY
(BODE)
I.T.I.S.A. Volta-Napoli
SIMULATION SOFTWARE WITH NATIONAL INSTRUMENT MULTISIM
I.T.I.S.A. Volta-Napoli
SURVEY ON THE CHART OF THE FREQUENCY OF RESONANCE
EVALUATION GRID
Leonardo da VinciPARTNERSHIPS
DG Education and Culture
ISTITUTO TECNICO INDUSTRIALE STATALE“ALESSANDRO VOLTA”
NAPOLI
EVALUATION GRID
I.T.I.S.A. Volta-Napoli
EVALUATION GRID
I.T.I.S.A. Volta-Napoli
EVALUATION GRID
I.T.I.S.A. Volta-Napoli