Designing of High Voltage Class D Amplifier with Power Feedback for Piezoelectric Loads

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Tghavi Reza; Mohammadian Dehziri Abdolkhalegh; Khalilabadi Mohammadreza; MARDANI REZA

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Paper Information

Journal: HYDROPHYSICS Year:2019 | Volume:4 | Issue:2 Page(s): 75-84

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Information Journal Paper

Title

Designing of High Voltage Class D Amplifier with Power Feedback for Piezoelectric Loads

Author(s)

Tghavi Reza | Mohammadian Dehziri Abdolkhalegh | Khalilabadi Mohammadreza | MARDANI REZA | Issue Writer Certificate

Keywords

total harmonic distortionQ1

piezo electricQ1

power amplifierQ1

full bridge converterQ1

class_DQ1

pulse width modulationQ1

Abstract

In this paper a Class-D amplifier is proposed to drive piezoelectric loads considering efficiency, linearity and electromagnetic interference issues. The proposed class-D amplifier is based on pulse-width-modulation (PWM) battery-fed. The amplifier not only supplies high voltage power but also utilizes dc-to-dc chopper to make electric isolation and reduce the output distortion. Using isolation dc chopper, causes amplifier isolation from the battery and in turn leads the circuits to be secured from the output distortions. The proposed class-D amplifier consists of a close-loop H-bridge ac-to-dc converter to improve the gain and reduce the output distortion. The amplifier is linear and the achieved output voltage THD is less than 0. 9% by a band-pass filter. The proposed amplifier is analyzed in different modes precisely and its operation is simulated. Main features are electric isolation from the source, linearity, fast response and sufficient band-pass.

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APA: Copy

Tghavi, Reza, Mohammadian Dehziri, Abdolkhalegh, Khalilabadi, Mohammadreza, & MARDANI, REZA. (2019). Designing of High Voltage Class D Amplifier with Power Feedback for Piezoelectric Loads. HYDROPHYSICS, 4(2 ), 75-84. SID. https://sid.ir/paper/264869/en

Vancouver: Copy

Tghavi Reza, Mohammadian Dehziri Abdolkhalegh, Khalilabadi Mohammadreza, MARDANI REZA. Designing of High Voltage Class D Amplifier with Power Feedback for Piezoelectric Loads. HYDROPHYSICS[Internet]. 2019;4(2 ):75-84. Available from: https://sid.ir/paper/264869/en

IEEE: Copy

Reza Tghavi, Abdolkhalegh Mohammadian Dehziri, Mohammadreza Khalilabadi, and REZA MARDANI, “Designing of High Voltage Class D Amplifier with Power Feedback for Piezoelectric Loads,” HYDROPHYSICS, vol. 4, no. 2 , pp. 75–84, 2019, [Online]. Available: https://sid.ir/paper/264869/en

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