Efficiency Improvement Strategies and Control of Permanent Magnet Motor Drives

Permanent magnet brushless dc (PMBDC) and synchronous machines (PMSM) drives are favored in variable speed applications for their high efficiency operation. Energy efficiency improvement in such motor drives is of interest in recent times because of rising cost of energy. Accordingly, two current control options for improving efficiency of these drives are taken for study and they are; (i) injecting sinusoidal and non-sinusoidal currents in PMBDC machines and (ii) lowering switching frequency of inverter driving the PMSM but without having significant low ordered sidebands of currents. Both these methods are applicable to existing types of permanent magnet motors and hence do not upset their existing optimized designs.

Name thesis:degree_name

Ph. D.

Level thesis:degree_level

doctoral

Discipline thesis:degree_discipline

Electrical Engineering

Department dc:contributor.department

Electrical and ComputerEngineering

Grantor dc:publisher

Virginia Tech

Year dc:date.issued

2015

Author dc:creator

• Kshirsagar, Parag Mahendra

Chairs dc:contributor.committeechair

• Ramu, Krishnan
• Stilwell, Daniel J.

Committee members dc:contributor.committeemember

• Lindner, Douglas K.
• Singh, Mahendra P.
• De La Ree, Jaime

• Permanent magnet motors
• non-sinusoidal currents
• reduced switching frequency
• efficiency improvements
• programmed PWM

Statement dc:rights

• In Copyright

Licence dc:rights.uri

• http://rightsstatements.org/vocab/InC/1.0/

Dc Identifier Other

vt_gsexam:6450

OAI identifier oai:identifier

oai:vtechworks.lib.vt.edu:10919/77685