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Analysis of extended constant power ...

Pinto, Joao Onofre Pereira.

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Analysis of extended constant power speed range of the permanent magnet synchronous machine driven by dual mode inverter control.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Analysis of extended constant power speed range of the permanent magnet synchronous machine driven by dual mode inverter control./
Author:	Pinto, Joao Onofre Pereira.
Description:	144 p.
Notes:	Major Professor: Jack S. Lawler.
Contained By:	Dissertation Abstracts International62-08B.
Subject:	Engineering, Electronics and Electrical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3022755
ISBN:	0493339582

Analysis of extended constant power speed range of the permanent magnet synchronous machine driven by dual mode inverter control.
Pinto, Joao Onofre Pereira.

Analysis of extended constant power speed range of the permanent magnet synchronous machine driven by dual mode inverter control. - 144 p.

Major Professor: Jack S. Lawler.

Thesis (Ph.D.)--The University of Tennessee, 2001.

The scope of this work is the Permanent Magnet Synchronous Machine (PMSM) operating at Constant Power Speed Range (CPSR). The proposed technique to drive the PMSM at CPSR is the Dual Mode Inverter Control (DMIC). The main idea behind DMIC is to change the three-phase operation of the PMSM below base speed to hybrid, single-phase and three-phase, operation above the base speed. This technique allows driving the PMSM in a wide CPSR. The DMIC uses three facts to achieve wide CPSR. First, it introduces the idea of the advance angle, which allows driving current into the machine while the back-emf is smaller than the DC link voltage. Second, the blanking angle is used to maximize the electrical to mechanical power conversion by increasing the on time of the transistors of the Voltage-Fed Inverter (VFI) and therefore slowing down the decreasing voltage in the outgoing phase. Finally, this technique avoids regeneration through the bypass diodes by introducing an ac-voltage controller interfacing the VFI and the PMSM.

ISBN: 0493339582Subjects--Topical Terms:

626636
Engineering, Electronics and Electrical.

Analysis of extended constant power speed range of the permanent magnet synchronous machine driven by dual mode inverter control.
LDR:03092nam 2200277 a 45 001 932400
005 20110505
008 110505s2001 eng d
020 $a 0493339582
035 $a (UnM)AAI3022755
035 $a AAI3022755
040 $a UnM $c UnM
100 1 $a Pinto, Joao Onofre Pereira. $3 1256144
245 1 0 $a Analysis of extended constant power speed range of the permanent magnet synchronous machine driven by dual mode inverter control.
300 $a 144 p.
500 $a Major Professor: Jack S. Lawler.
500 $a Source: Dissertation Abstracts International, Volume: 62-08, Section: B, page: 3741.
502 $a Thesis (Ph.D.)--The University of Tennessee, 2001.
520 $a The scope of this work is the Permanent Magnet Synchronous Machine (PMSM) operating at Constant Power Speed Range (CPSR). The proposed technique to drive the PMSM at CPSR is the Dual Mode Inverter Control (DMIC). The main idea behind DMIC is to change the three-phase operation of the PMSM below base speed to hybrid, single-phase and three-phase, operation above the base speed. This technique allows driving the PMSM in a wide CPSR. The DMIC uses three facts to achieve wide CPSR. First, it introduces the idea of the advance angle, which allows driving current into the machine while the back-emf is smaller than the DC link voltage. Second, the blanking angle is used to maximize the electrical to mechanical power conversion by increasing the on time of the transistors of the Voltage-Fed Inverter (VFI) and therefore slowing down the decreasing voltage in the outgoing phase. Finally, this technique avoids regeneration through the bypass diodes by introducing an ac-voltage controller interfacing the VFI and the PMSM.
520 $a The analysis of DMIC/PMSM system shows that it uses the same principle of Vector Control with Field Weakening (VCFW), the armature current is controlled to have a field component that weakens the air gap field, and therefore opposes the back-emf. However, the armature current vector must satisfy the voltage and current constraints, which are the maximum current and armature voltage. In VCFW, the voltage limit circle shrinks fast as speed increases because the maximum armature voltage is the maximum output voltage of the VFI, which is limited by the DC link voltage. In DMIC, the voltage limit circle shrinks slower, since after the commutation period the machine is operating in single-phase mode. The total armature voltage is the contribution of the DC link voltage, the back-emf, and the induced voltage provided by the derivative of the on-phase currents. In fact, this operation eliminates the voltage constraint, and the machine can operate at any speed, and then the only constraint is the current limit. Therefore, it is shown in this work that theoretically there is no speed limit for DMIC driving PMSM over CPOR.
590 $a School code: 0226.
650 4 $a Engineering, Electronics and Electrical. $3 626636
690 $a 0544
710 2 0 $a The University of Tennessee. $3 1022026
773 0 $t Dissertation Abstracts International $g 62-08B.
790 $a 0226
790 1 0 $a Lawler, Jack S., $e advisor
791 $a Ph.D.
792 $a 2001
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3022755