Vector and scalar control of a four switch three phase inverter
- Univ. Federal da Paraiba, Campina Grande, Paraiba (Brazil). Dept. de Engenharia Eletrica
This paper investigates the PWM operation of a four switch three phase inverter (FSTPI), in the case of digital implementation. Different switching sequence strategies for vector control are described and a digital scalar method is also presented. The influence of different switching patterns on the output voltage symmetry, current waveform and switching frequency are examined. The results obtained by employing the vector and scalar strategies are compared and a relationship between them is established. This comparison is based on analytical study and is corroborated either by the computer simulations and by the experimental results. The vector approach makes ease the understanding and analysis of the FSTPI, as well the choice of a PWM pattern. However, similar results may be obtained through the scalar approach, which has a simpler implementation. The experimental results of the use of the FSTPI and digital PWM to control an induction motor are presented.
- OSTI ID:
- 427940
- Report Number(s):
- CONF-9510203-; TRN: IM9708%%267
- Resource Relation:
- Conference: IEEE/Industrial Application Society conference, Orlando, FL (United States), 8-12 Oct 1995; Other Information: PBD: 1995; Related Information: Is Part Of Conference record of the 1995 IEEE Industry Applications Society 30. IAS annual meeting. Volume 3; PB: 961 p.
- Country of Publication:
- United States
- Language:
- English
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