TY  - JOUR
AU  - Járdán, Rafael Kálmán
AU  - Stumpf, Péter Pál
AU  - Bartal, Péter
AU  - Varga, Zoltán
AU  - Nagy, István
TI  - A novel approach in studying the effects of subharmonics on ultrahigh-speed AC motor drives
JF  - IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
J2  - IEEE T IND ELECTRON
VL  - 58
PY  - 2011
IS  - 4
SP  - 1274
EP  - 1281
PG  - 8
SN  - 0278-0046
DO  - 10.1109/TIE.2010.2098353
UR  - https://m2.mtmt.hu/api/publication/2660503
ID  - 2660503
LA  - English
DB  - MTMT
ER  - 

TY  - CHAP
AU  - Halász, Sándor
AU  - Varjasi, István
AU  - Zakharov, A
TI  - Novel voltage spectra investigation of space vector modulation technique
T2  - IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society
PB  - IEEE Industrial Electronics Society
CY  - Piscataway (NJ)
SN  - 0780379063
PY  - 2003
SP  - 2660
EP  - 2665
PG  - 6
DO  - 10.1109/iecon.2003.1280668
UR  - https://m2.mtmt.hu/api/publication/2661916
ID  - 2661916
N1  - WoS:hiba:000189465300458 2022-07-19 14:15 befoglaló egyiknél nincsenek szerzők, befoglaló cím nem egyezik
AB  - In the inverter-fed ac drives the space vector modulation technique is the most popular and wide spread one since it produces a high quality inverter-fed ac drive especially for low and middle amplitudes of motor voltages. For realization of the space vector PWM usually two different PWM methods can be applied. This paper deals with the analysis and comparison of voltage spectra of these methods and the derivation of the analytical equations of motor voltage harmonics for these PWM methods. It is shown that for the infinite value of the sampling frequency all realization methods produce the same voltage spectrum which is characterized by the relatively simple equation. This expression also ensures an accurate computation of voltage, current and torque harmonics for the relatively low value of the sampling frequency.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Halász, Sándor
AU  - Huu, BT
AU  - Zakharov, A
TI  - Two-phase modulation technique for three-level inverter-fed AC drives
JF  - IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
J2  - IEEE T IND ELECTRON
VL  - 47
PY  - 2000
IS  - 6
SP  - 1200
EP  - 1211
PG  - 12
SN  - 0278-0046
DO  - 10.1109/41.887947
UR  - https://m2.mtmt.hu/api/publication/2661922
ID  - 2661922
AB  - Two-phase dipolar and unipolar modulation techniques for three-level three-phase inverters are suggested and compared with conventional three-phase pulsewidth modulation (PWM) techniques. Two-phase PWMs with 60 degrees (0 degrees and +/-30 degrees shift) and 120 degrees cycles are investigated from the point of view of harmonic losses, motor voltage spectra, and torque pulsations. It is shown that two-phase dipolar PWMs have no advantages in comparison with three-phase PWMs, while two-phase unipolar PWMs-in contrast with three-phase PWMs-considerably decrease the motor harmonic losses and torque pulsations in the whole motor voltage region. At the same time, the inverter neutral point control requires reversing to three-phase PWM technique for the duration of the control.
LA  - English
DB  - MTMT
ER  -