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Control scheme evaluation for class-D amplifiers in a power-ultrasonic system


Reference:

Wang, Y., Draper, M.J., Denley, S.M., Robinson, F.V.P. and Shepherd, P.R., 2012. Control scheme evaluation for class-D amplifiers in a power-ultrasonic system. In: 6th IET International Conference on Power Electronics, Machines and Drives (PEMD 2012), 2012-03-26 - 2012-03-28, Bristol. IET, 1 - 6. (IET Conference Publications; 2012/CP592)

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    Abstract

    Power-converters or amplifiers are required to drive high power piezoelectric transducers and attached processing equipment, at the optimum resonance mode for best processing efficacy, while under varying loading conditions. The driving power converter must synthesize relatively low-distortion sinusoidal output current to prevent harmonic-current excitation of neighbouring, less-productive or desirable resonant modes. Continuously-variable output-voltage capability is required to maintain output power at a level which optimises processing. Three output synthesis methods have been reviewed in this paper for the Class-D amplifier constituting the transducer driver. Typical output-waveform quality is assessed, and PSPICE simulation and laboratory results are presented to illustrate performance.

    Details

    Item Type Conference or Workshop Items (UNSPECIFIED)
    CreatorsWang, Y., Draper, M.J., Denley, S.M., Robinson, F.V.P. and Shepherd, P.R.
    DOI10.1049/cp.2012.0237
    DepartmentsFaculty of Engineering & Design > Electronic & Electrical Engineering
    Publisher StatementCONTROL_SCHEME_EVALUATION_FOR_CLASS_D_AMPLIFIERS.pdf: This paper is a postprint of a paper submitted to and accepted for publication by IET and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library
    StatusPublished
    ID Code31396

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