Advanced low cost and high performance brushless dc motor drives for mass production /
Variable-speed drives, employing an ac motor and a pulsewidth modulation (PWM) voltage-fed inverter, are being used for various purposes in consumer products and industrial applications. Although their technical advantages are generally acknowledged, researchers are becoming aware of their cost and...
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| Format: | Thesis Book |
| Language: | English |
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[Place of publication not identified] :
[publisher not identified] ;
2001.
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| Online Access: | http://proxy.library.tamu.edu/login?url=http://proquest.umi.com/pqdweb?did=726104511&sid=1&Fmt=2&clientId=2945&RQT=309&VName=PQD |
| Summary: | Variable-speed drives, employing an ac motor and a pulsewidth modulation (PWM) voltage-fed inverter, are being used for various purposes in consumer products and industrial applications. Although their technical advantages are generally acknowledged, researchers are becoming aware of their cost and are exploring the possibility of cost reduction. The cost reduction of variable-speed drives is accomplished by two approaches. One is the topological approach and the other is the control approach. In topology, a minimum number of switches is used to compose the power conversion circuit. On the other hand, in the control approach, control algorithms are designed and implemented in conjunction with the reduced parts converter to produce the desired dynamic and static speed and torque characteristics. Until now, the reduced parts converters have mainly been applied to the ac induction motor drives. However, these days, the brushless dc (BLDC) motor is attracting much interest, due to its high efficiency, high power factor, high torque, simple control, and lower maintenance. This dissertation develops a new low cost four-switch BLDC motor drive for practical industrial applications. To drive this system effectively, a novel direct current controlled pwm scheme is designed and implemented. Also, the feasibility of the four-switch converter is extended to the two-phase BLDC motor drives, which can be expected to be a strong candidate for low cost and high performance BLDC motor applications in future motor drive markets, such as home appliances, electric prolusion systems in electric vehicles (EV) and hybrid electric vehicles (HEV). In this work, the operational principle of the four-switch BLDC motor drive and the developed control scheme are theoretically analyzed and the performance is demonstrated by the simulation and experimental results, along with TI DSP TMS 320F243. |
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| Item Description: | Vita. "Major Subject: Electrical Engineering". |
| Physical Description: | xiii, 132 leaves : illustrations ; 28 cm. Issued also on microfiche from University Microfilm Inc. |
| Bibliography: | Includes bibliographical references (leaves 96-99). |