Efficient Power Conversion Apparatuses Using Paired EAP Transducers
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Solution Overview
Problem
Existing energy conversion technologies, such as those using ElectroActive Polymer (EAP) transducers, face inefficiencies in converting electrical energy to mechanical energy and vice versa, particularly in high-voltage applications, and often require multiple inductive elements and complex control systems, which can increase size, weight, and cost.
Innovation Solution
The development of efficient power conversion apparatuses and systems that utilize paired EAP transducers mechanically coupled to each other, allowing for bidirectional energy transfer with a single inductor and advanced switch timing control, enabling high-efficiency energy conversion in both actuation and generation modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple inductive elements are used in energy conversion systems, then energy transfer capability is improved, but device complexity and size increase
Solution Approach 1:
The patent combines multiple inductive functions into a single shared inductor that services multiple transducers. The inductor is integrated into a circuit topology that allows it to transfer energy to multiple transducers sequentially through switching control, eliminating the need for separate inductors for each transducer while maintaining energy transfer capability.
Solution Approach 2:
The single inductor is designed to perform multiple functions by serving different transducers in different operational modes. Through the switching network, the same inductor can charge different transducers, support energy recovery from different transducers, and maintain voltage regulation across multiple output channels, making it a universal energy transfer component.
2Loss of energy
If multiple inductive elements are used for servicing multiple transducers, then energy conversion efficiency is improved, but weight and cost increase
Solution Approach 1:
Multiple inductive components are merged into a single shared inductor that services all transducers through a common circuit topology. This consolidation dramatically reduces the total weight of inductive materials, copper windings, and magnetic cores while maintaining energy conversion efficiency through intelligent switching control that optimizes current paths.
Solution Approach 2:
The system enables transducers to serve each other through the shared inductor. When one transducer is being charged, others can simultaneously discharge through the same inductor, allowing the system to self-regulate energy flow and reduce the need for additional active control components that would add weight.
3Measurement precision
If complex control systems are used for managing multiple transducers, then energy transfer precision is improved, but device complexity increases
Solution Approach 1:
The control system uses periodic switching sequences to manage energy transfer to and from multiple transducers. By implementing regular, repeating charge and discharge cycles with predetermined timing, the system achieves precise energy transfer control through simple clock-driven switching logic rather than complex real-time control algorithms.
Solution Approach 2:
The patent uses identical, standardized switching circuit modules for each transducer channel. Each channel has a copy of the same basic switching topology controlled by synchronized timing signals, allowing precise control to be achieved through replicated simple circuits rather than complex unique control logic for each transducer.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables efficient energy conversion between electrical and mechanical forms in both directions with reduced complexity and size, enhancing the performance of applications like toy robots and energy harvesting from fluid motion, while maintaining high efficiency and minimizing the need for multiple inductive components.
Implementation Method 1
They convert between electrical and mechanical forms of energy by taking advantage of electrostatic forces.
Implementation Method 2
The transducers may store electrical energy, such as in a capacitance that varies with elastic deformation, and store mechanical energy, such as in elastic deformations that alter electrical capacitance.
Data Source
AI summary
The EFFICIENT POWER CONVERSION APPARATUSES, METHODS AND SYSTEMS include circuits for efficiently converting electrical energy to mechanical energy and vice-versa, such as within a multitude of ElectroActive Polymer (EAP) transducers. Embodiment may support a multitude of EAP transducers while also being capable of directing the movement of energy between electrical and mechanical forms in either direction. In another aspect, an efficient mode of transferring mechanical energy is discussed, via one or more strained and paired elastic transducers coupled to a potential energy reservoir.