High Voltage Power Supply for Ozone Generation Based on Piezoelectric Transformer

Alonso, J.M.; Ordiz, C.; Costa, Marco A. Dalla; Ribas, J.; Cardesin, J.

doi:10.1109/07ias.2007.290

Cited by 15 publications

(22 citation statements)

References 24 publications

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“…The proposed PT LED drive utilizes an inductorless halfbridge topology [3], [14]- [16], [22], [26], which eliminates the bulky series inductor and only converts energy through the electromechanical PT resonance tank. Fig.…”

Section: Inductorless Half-bridge Topologymentioning

confidence: 99%

Forward Conduction Mode Controlled Piezoelectric Transformer-Based PFC LED Drive

Roedgaard

Weirich²,

Andersen

2013

IEEE Trans. Power Electron.

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Abstract-Light-emitting diode (LED) illumination is getting more and more common; as LED's performance is rising, the price is falling and is getting competitive. Some of the challenges of ac mains supplied illumination are the requirement of power factor correction (PFC) and the competitiveness of a low priced market. In this paper, a new forward conduction mode (FCM) control method for piezoelectric transformer (PT)-based power converters is proposed. A PT-based LED drive facilitating passive PFC is developed, utilizing and validating the FCM control method. The drive utilizes an inductorless half-bridge topology and for circuit minimization and simplicity it has no load regulation and has a 100-Hz output modulation. The proposed FCM control method ensures that the PT is operated at its optimal operation frequency, which ensures soft-switching operation and a constant gain. As a result a 6.5-W PT-based PFC LED drive has been developed, supplied from 230-V 50-Hz ac mains, achieving a power factor of 0.96. Index Terms-Forward conduction mode (FCD) control, lightemitting diode (LED), power factor correction (PFC), piezoelectric transformer (PT).

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Section: Inductorless Half-bridge Topologymentioning

confidence: 99%

Forward Conduction Mode Controlled Piezoelectric Transformer-Based PFC LED Drive

Roedgaard

Weirich²,

Andersen

2013

IEEE Trans. Power Electron.

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“…Presently, closed loop controls are being performed by measuring phase difference between resonant current and switching signal for the purpose of adjusting the switching frequency to the optimum value to ensure ZVS and achieve maximum possible efficiency of PTs [4,27]. Closed loop control strategies allowing ZVS operation of converter have been suggested in [27,28,29].…”

Section: Control Methodsmentioning

confidence: 99%

“…Transmitted energy ratio in PTs cannot exceed 95% due to piezoelectric material losses [1]. PTs are frequency-, load-and temperature-dependent [2,3,4,5]. This fact influences their voltage gain and efficiency.…”

Section: A Pts In Smpsmentioning

confidence: 99%

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State-of-the-art piezoelectric transformer-based switch mode power supplies

Ekhtiari

Zhang

Andersen

2014

IECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society

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Abstract-Inductorless switch mode power supplies based on piezoelectric transformers are used to replace conventional transformers in high power density switch mode power supplies. Even though piezoelectric-based converters exhibit a high degree of nonlinearity, it is desirable to use piezoelectric transformers due to their smaller size, lighter weight, lower electromagnetic interference, higher power density, higher efficiency, and lower cost. Moreover, PTs allow converters to operate in high switching frequencies and by obtaining soft switching condition, switching losses will decrease. This paper discusses power supplies with the trend evaluation of piezoelectric transformer-based converter topologies and control methods. The challenges of piezoelectric transformers regarding soft switching capability and nonlinearity are addressed. This paper can be used as a guideline for choosing a proper topology of piezoelectric-based switch mode power supply and a control method for the required application.

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“…The specific EAP actuator application is described in more detail in [1] and is similar to the one in [3]. Figure 1 illustrates a schematical diagram of the converter, which utilises an inductor-less half-bridge topology [2] [13]. An inductor in series with the PT is usually necessary, in order to achieve soft switching and efficient operation.…”

Section: Introductionmentioning

confidence: 99%

Design of interleaved multilayer Rosen type piezoelectric transformer for high voltage DC/DC applications

Rødgaard¹,

Andersen²,

Meyer³

et al. 2012

6th IET International Conference on Power Electronics, Machines and Drives (PEMD 2012)

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Research and development within piezoelectric transformer (PT) based converters are rapidly increasing as the technology is maturing and starts to prove its capabilities. Especially for high voltage and high step-up applications, PT based converters have demonstrated good performance and DC/AC converters are widely used commercially. The availability of PT based converters for DC/DC applications are very limited and are not that developed yet. I this paper an interleaved multi layer Rosen-type PT for high step-up and high output voltage is developed, for driving a 2.5kV dielectric electro active polymer actuator [17]. The targeted application utilises an inductor-less half-bridge driving topology, where the reward of eliminating the series inductor is a reduction in component count, size and price. The absence of a series inductance calls for other means to avoid large hard switching losses and obtain soft switching capabilities. This can be achieved by utilising an advantageous PT structure, which is the main advantage of the interleaved Rosen-type PT. Furthermore the design should be further optimised, in order to achieve soft switching capability. The goal of this paper is to develop a soft switching optimised PT, capable of generating output voltages higher than 2kV from a 24V supply voltage. Furthermore finite element method (FEM) has been the main tool through the PT development.

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High Voltage Power Supply for Ozone Generation Based on Piezoelectric Transformer

Cited by 15 publications

References 24 publications

Forward Conduction Mode Controlled Piezoelectric Transformer-Based PFC LED Drive

Forward Conduction Mode Controlled Piezoelectric Transformer-Based PFC LED Drive

State-of-the-art piezoelectric transformer-based switch mode power supplies

Design of interleaved multilayer Rosen type piezoelectric transformer for high voltage DC/DC applications

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