Direct AC-AC converter and its applications to induction motor drives

Thesis/Dissertation · Sun Jan 01 04:00:00 EST 1989

OSTI ID:6106148

Khoei, A

Several modulation schemes are used to reduce the harmonic content in a direct ac-ac converter. A new modulation scheme using a clipped sine reference is proposed and the harmonic content with this scheme is found to be lower. The performance of a three-phase induction motor fed by a direct ac-ac converter is analyzed using the equivalent-circuit model as well as the dynamic equations referred to a frame fixed to the stator. Operation of a bipolar direct ac-ac converter with high input utilization is studied. The performance of a single-phase induction motor fed by such a converter is analyzed using an equivalent-circuit model. The direct ac-ac converter makes us of several bilateral switches which enable both motoring and regeneration. A practical realization using power MOSFETs is given.

• Research Organization: North Dakota State Univ., Fargo, ND (USA)
• OSTI ID: 6106148
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426000* -- Engineering-- Components
Electron Devices & Circuits-- (1990-)
ELECTRIC MOTORS
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
EQUIPMENT
EQUIVALENT CIRCUITS
FIELD EFFECT TRANSISTORS
HARMONICS
MODULATION
MOS TRANSISTORS
MOSFET
MOTORS
OSCILLATIONS
PULSE CONVERTERS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR SWITCHES
SWITCHES
TRANSISTORS