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Piezoelectric transformer with pulse dropping technique for high voltage generation

机译：具有脉冲滴技术的压电变压器，高压发电技术

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This paper describes implementation design and analysis of piezoelectric transformer with pulse dropping technique to produce high voltage. The main contribution is the implementation of pulse dropping mode in inverter switching mechanism to decrease heat of piezoelectric transformer during the high voltage generation. Piezoelectric transformer fed by inverter in this work is dedicated to generate high voltage in high frequency. How ever, load current drawn from the transformer causes temperature rise and deterioration of internal elements of piezoelectric. As operating temperature reach the maximum limit, the output voltage of piezoelectric becomes non sinusoidal and decreases in magnitude. In pulse dropping technique, there are two modes in period of inverter switching. The first mode is called as power injection and the second is called as relaxation period. The experiments was carried out by a high frequency inverter, power MOSFET as power electronic switch, KW06-559 infra red thermometer to detect temperature of piezoelectric transformer, and resistive-capacitive component as a load. Without the use of pulse dropping technique during experiment, the temperature of piezoelectric reached the maximum limit at 70°C, voltage output was unstable and the piezoelectric was easy to crack. It was found that first mode maintained high voltage output at 2.45 kV peak to peak and the second mode successfully maintained the average temperature of piezoelectric in the range of 35-40°C.
机译：本文介绍了具有脉冲滴技术的压电变压器的实现设计和分析，从而产生高电压。主要贡献是在逆变器切换机构中实现脉冲滴加模式，以减小压电变压器在高压发电期间的热量。通过逆变器供给的压电变压器专用于高频产生高电压。从变压器中汲取的负载电流是多么，引起压电内部元件的温升和劣化。随着工作温度达到最大限制，压电的输出电压变为非正弦的并且幅度下降。在脉冲滴电技术中，逆变器切换时段存在两种模式。第一模式称为功率注入，第二个模式称为松弛周期。实验由高频逆变器，功率MOSFET作为电力电子开关，KW06-559红外温度计进行，以检测压电变压器的温度和电阻电容分量作为负载。在不使用实验期间使用脉冲滴剂技术，压电温度达到70℃的最大限制，电压输出不稳定，压电易于破裂。发现，第一模式在2.45 kV峰值下保持高电压输出到峰值，第二模式成功地保持了压电的平均温度在35-40°C的范围内。

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