ΜΕΛΕΤΗ ΣΧΗΜΑΤΩΝ ΔΙΑΜΟΡΦΩΣΗΣ ΘΕΣΗΣ ΠΑΛΜΩΝ (ΡΡΜ) ΓΙΑ ΤΟΝ ΕΛΕΓΧΟ ΑΣΥΓΧΡΟΝΩΝ ΤΡΙΦΑΣΙΚΩΝ ΚΙΝΗΤΗΡΩΝ

IN THIS WORK A FAMILY OF NOVEL PPM SCHEMES IS PRESENTED AND ANALYSED WITH APPLICATIONS TO VARIABLE FREQUENCY INVERTER DRIVES. THE MOST INTERESTING AMONG THEM ARE THE DF-PPM, THE CS-E-PPM AND THE TC-PPM SIGNALS. IT HAS BEEN DEMONSTRATED THAT THE SPECTRA OF THESE SIGNALS POSSES A NUMBER OF SIGNIFICANT FEATURES SUCH AS: A) THE FUNDAMENTAL COMPONENT IS SIGNIFICANTLY STRONG AND IS LINEARLY CONTROLLED BY THE MODULATION INDEX AND PULSE WIDTH, B) THE HIGHER HARMONIC SPECTRUM ISMAINLY DEFINED BY THE MODULATION INDEX AND IS SUPPRESSED COMPARED WITH THE FUNDAMENTAL HARMONIC, C) MINIMUM TIME INTERVAL BETWEEN SUCCESSIVE CHOPPINGS IS KEPT HIGHER THAN A MINIMUM BOUND, THUS AVOIDING LOCK-OUT EFFECTS, D) POSSIBILITY OF CHOOSING PARTICULAR PAIR OF PARAMETERS WHICH CORRESPOND TO WAVE FORMS WITH SUFFICIENTLY LOW UPPER SPECTRUM. THE HARMONIC POWER LOSSES AS WELL AS HARMONIC TORQUES IN INDUCTION MOTOR ARE PROVED TO BE LOW ENOUGH, DEPENDING ON THE PARTICULAR CHOISE OF PARAMETERS.

Grantor dc:publisher

Aristotle University Of Thessaloniki (AUTH)

Year dc:date

1985

Authors dc:creator

• Theocharis, John
• Θεοχάρης, Ιωάννης

• ΑΝΑΛΥΣΗ ΦΑΣΜΑΤΩΝ ΡΡΜ
• ΕΛΕΓΧΟΣ ΗΛΕΚΤΡΙΚΩΝ ΚΙΝΗΤΗΡΩΝ
• ΣΥΜΠΕΡΙΦΟΡΑ ΚΙΝΗΤΗΡΩΝ ΜΕ ΔΙΕΓΕΡΣΗ ΡΡΜ
• ΣΧΗΜΑΤΑ ΔΙΑΜΟΡΦΩΣΗΣ ΘΕΣΗΣ ΠΑΛΜΩΝ
• ΦΑΣΜΑΤΑ ΑΝΩΤΕΡΩΝ ΑΡΜΟΝΙΚΩΝ
• ΨΗΦΙΑΚΕΣ ΓΕΝΝΗΤΡΙΕΣ ΚΥΜΑΤΟΜΟΡΦΩΝ ΡΡΜ-PWM
• CONTROL OF ELECTRICAL INDUCTION MOTORS
• DIGITAL GENERATORS OF PPM-PWM SIGNALS
• HIGHER HARMONICS SPECTRA
• POWER LOSSES IN MOTORS DUE TO PPM SPECTRA
• PPM SPECTRUM ANALYSIS
• PULSE POSITION MODULATED WAVEFORMS
• Επιστήμες Μηχανικού και Τεχνολογία
• Επιστήμη Ηλεκτρολόγου Μηχανικού, Ηλεκτρονικού Μηχανικού, Μηχανικού Η/Υ
• Engineering and Technology
• Electrical Engineering, Electronic Engineering, Information Engineering

Language dc:language

gre

Identifier

10.12681/eadd/0543

OAI identifier oai:identifier

oai:10442/0543