Abstract
High-performance power-converters in the form of single-tone class-D amplifiers are required to drive power-ultrasonic transducers in industrial applications. These must produce low-distortion, variable-frequency, and variable-amplitude sinusoidal currents to efficiently drive the piezoelectric cell and horn of transducers, and thereby vibrate materialprocessing stages. A resonant-tracking control strategy is generally used to efficiently couple and regulate output power delivery at a high-Q probe-system resonant mode. This paper reviews a number of power-converter control options suitable for such probe drivers, including quasi-squarewave (QS), naturally sampling pulse width modulation (PWM) and programmed PWM (PPWM). Typical output-waveform quality and the PSPICE models of the power-converter and piezoelectric transducer developed to assess and compare methods are presented.
Original language | English |
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Title of host publication | 46th International Universities' Power Engineering Conference (UPEC) |
Place of Publication | Germany |
Pages | 1 - 6 |
Number of pages | 6 |
Publication status | Published - Sept 2011 |
Event | 46th International Universities' Power Engineering Conference (UPEC 2011) - Soest, Germany Duration: 5 Sept 2011 → 8 Sept 2011 |
Conference
Conference | 46th International Universities' Power Engineering Conference (UPEC 2011) |
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Country/Territory | Germany |
City | Soest |
Period | 5/09/11 → 8/09/11 |