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Effective algorithm for multilevel converters with very low computational cost

Effective algorithm for multilevel converters with very low computational cost

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Published

An effective and fast modulation algorithm for high power voltage source multilevel converters is presented. This approach drastically reduces the computational load maintained, permitting the on-line computation of the switching sequence and the on-state durations of the respective switching state vectors. It has been satisfactorily implemented in very low-cost microcontrollers.

Inspec keywords: DC-AC power convertors; voltage control; invertors; microcontrollers; modulation; switching circuits

Other keywords: computational load reduction; VSI; on-state durations computation; effective modulation algorithm; low-cost microcontrollers; multilevel voltage-source power converters; online switching sequence computation; switching state vectors

Subjects: Microprocessor chips; Voltage control; Power convertors and power supplies to apparatus; Microprocessors and microcomputers; Control of electric power systems

References

    1. 1)
      • A. Nabae , I. Takahashi , H. Akagy . A neutral-point clamped PWM inverter. IEEE Trans. Ind. Appl. , 5 , 518 - 523
    2. 2)
      • Veenstra, M., Rufer, A.: `PWM-control of multi-level voltage-source inverters', Power Electronics Specialists Conf., PESC'2000, 2000, Galway, Ireland, 3, p. 1387–1393.
    3. 3)
      • J.-O. Krah , J. Holtz . High-performance current regulation and efficient PWM implementation for low-inductance servo motors. IEEE Trans. Ind. Appl. , 5
    4. 4)
      • N. Celanovic , D. Boroyevich . A fast space-vector modulation algorithm for multilevel three-phase converters. IEEE Trans. Ind. Appl. , 2 , 637 - 641
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