TY - CHAP
T1 - Control scheme evaluation for class-D amplifiers in a power-ultrasonic system
AU - Wang, Y.
AU - Draper, M.J.
AU - Denley, S.M.
AU - Robinson, F.V.P.
AU - Shepherd, P.R.
PY - 2012
Y1 - 2012
N2 - 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.
AB - 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.
UR - http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6242087
U2 - 10.1049/cp.2012.0237
DO - 10.1049/cp.2012.0237
M3 - Other chapter contribution
T3 - IET Conference Publications
SP - 1
EP - 6
BT - 6th IET International Conference on Power Electronics, Machines and Drives (PEMD 2012)
PB - IET
T2 - 6th IET International Conference on Power Electronics, Machines and Drives (PEMD 2012)
Y2 - 26 March 2012 through 28 March 2012
ER -