Optimal online algorithm derivation for PWM-SHE switching

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Optimal online algorithm derivation for PWM-SHE switching

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© IEE
Published

A novel technique is presented for developing a near-optimal online real time pulse width modulated specific harmonic elimination (PWM-SHE) switching pattern in which the piecewise linearisation of a fully optimal PWM-SHE switching strategy is applied.

Inspec keywords: switching; PWM invertors; piecewise-linear techniques; motor drives; harmonic distortion; conjugate gradient methods; electric machine analysis computing

Other keywords: specific harmonic elimination; switching angles; PWM inverter drives; inverter switching pulses; piecewise linearisation; straight line segments; PWM-SHE switching; switching strategy; nonlinear transcendential equation; optimal online algorithm derivation; conjugate gradient descent method

Subjects: Linear algebra (numerical analysis); Drives; Interpolation and function approximation (numerical analysis); Interpolation and function approximation (numerical analysis); Power convertors and power supplies to apparatus; Linear algebra (numerical analysis); Electric actuators and final control equipment; Numerical analysis; Power engineering computing

References

    1. 1)
      • S.R. Bowes , A. Midoun . Suboptimal switching strategies for microprocessor controlled PWM inverterdrives. IEE Proc. B , 3 , 133 - 148
    2. 2)
      • Jiang, Q., Holmes, G.: `A method of linearizing optimal PWM switching strategies to enable theiron-linereal-time computation', Proc. IEEE IAS 1991 annual meeting, p. 819–825.
    3. 3)
      • Sun, J., Grotstollen, H.: `Pulsewidth modulation based on real-time solution of algebraic harmoniceliminationequations', Proc. IEEE IAS 1994 annual meeting, p. 79–84.
http://iet.metastore.ingenta.com/content/journals/10.1049/el_19980315
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