Investigation on the efficiency potentials of anti-resonat driven high power ultrasonic systems compared to resonant operation

与谐振操作相比，反谐振驱动高功率超声波系统的效率潜力研究

• 批准号: 382779182
• 负责人: Professor Dr.-Ing. Axel Mertens
• 金额: --
• 依托单位: Institut für Antriebssysteme und Leistungselektronik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/382779182?language=en
• 关键词: Investigation; efficiency; potentials; anti; resonat

High power ultrasonic systems are well established in many industrial applications. Those, i.e. the ultrasonic welding, have the need for faster and more energy efficient systems. The main focus of this proposal is increasing the knowledge on ultrasonic systems including its power electronics with a special focus on transient and efficiency aspects. In the state of art is no objective comparative study on the different operation strategies available. Especially the operation of power ultrasonic systems at anti-resonance is not sufficiently investigated.The project proposal aims to close this gap. This will be carried out by the investigation of an ultrasonic system consisting of an ultrasonic transducer and a power electronics in resonant and anti-resonant operation.It will be studied if the utilization of novel semiconductors (here: GaN) can reduce the internal and system losses as well as the switching losses at high switching frequencies (about 1 MHz). One essential question is the potential of reducing the size of filter components though the high switching frequencies. This includes a detailed research on the additional losses within the filter components. To enable the developed power electronics for resonant and anti-resonant operation of the ultrasonic transducer, different voltage levels have to be provided. This will be realized by developing two suited HF-transformers. Those will be detailed investigated and designed with respect to their properties including leakage inductance, internal and coupling capacitance.Suited model based control algorithms will be investigated with respect to settling time, stability and efficiency. Here the operation mode in combination with different load levels will be detailed studied. Hence a load emulation system will be extended and utilized for the comparative study. This allow high load dynamics and very good reproducibility.One important question, is which is the optimal operation mode, resonant or anti-resonant operation. The literature is providing limited studies on piezoelectric elements only, they provide the hypothesis that anti-resonance has major advantages. Typical pre-stressed bolted transducer for high power ultrasonic applications have not been covered yet. Moreover, the separation and identification of losses as mechanical, coupling and dielectric losses is an important task in the project. This will be used for increasing the fundamental understanding and model validation.

高功率超声系统在许多工业应用中已建立。这些，即超声波焊接，需要更快，更节能的系统。该提案的主要重点是增加对超声系统的知识，包括其功率电子设备，特别关注瞬态和效率方面。在艺术状态下，没有关于可用的不同操作策略的客观比较研究。尤其是对抗呼声的功率超声系统在反呼声下的运行。项目提案旨在缩小这一差距。这将通过研究由超声传感器和谐振和抗谐振操作中的电力电子组成的超声系统进行的研究。一个必不可少的问题是通过高开关频率减少过滤器组件的大小的潜力。这包括有关滤波器组件中其他损失的详细研究。为了使开发的电力电子能够用于超声传感器的谐振和抗谐振操作，必须提供不同的电压水平。这将通过开发两个合适的HF转换器来实现。这些将在其性质方面进行详细研究和设计，包括泄漏电感，内部和耦合电容。基于模型的控制算法，将针对结算时间，稳定性和效率进行研究。这里将详细研究操作模式与不同的负载水平结合使用。因此，将扩展和用于比较研究的负载仿真系统。这允许高负载动态和非常好的可重复性。一个重要的问题是，哪个是最佳操作模式，谐振或抗谐振操作。文献仅提供对压电元素的有限研究，它们提供了这样一种假设，即反呼声具有主要优势。尚未涵盖用于高功率超声应用的典型预压力螺栓传感器。此外，将损失作为机械，耦合和介电损失的分离和识别是项目的重要任务。这将用于增加基本的理解和模型验证。