Energy Capture Circuit Phased Subcircuit Efficiency
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Solution Overview
Problem
Existing pulse energy capture circuits for devices like gravity bomb fuzes are limited by a 50% theoretical efficiency barrier, capturing only about 39% of available energy due to inefficiencies, which is insufficient for Electronic Safe-and-Arm Devices requiring more energy.
Innovation Solution
A high efficiency energy capture circuit design utilizing two subcircuits with inductive, rectifying, and capacitive components, along with a clock and inverter, to produce phased ½ sine current waveforms, achieving up to 95% theoretical efficiency by optimizing current delivery and storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If capacitor-only pulse energy capture circuits are used, then the circuit structure is simple, but the energy capture efficiency is limited to maximum 50% (actually about 39%)
Solution Approach 1:
The circuit is divided into multiple subcircuits (at least two) that operate in phases, with each subcircuit containing its own inductive means, rectifying means, and capacitive means. This segmentation allows different parts of the circuit to perform specialized functions at different times, achieving higher overall efficiency while managing complexity through modular design
Solution Approach 2:
The circuit employs periodic switching controlled by a clock means, where subcircuits are activated in alternating phases. The clock means generates periodic signals that cause inductors to store and release energy in a cyclic manner, enabling continuous energy capture from the pulse source with higher efficiency than static capacitor-only designs
2Reliability
If Electronic Safe-and-Arm Devices are used, then the reliability is improved, but the energy requirement is at least twice that of conventional fuzes
Solution Approach 1:
The circuit changes the energy capture parameter from the traditional 50% theoretical maximum to approximately 95% theoretical efficiency by using inductive means to store energy during pulse peaks and transfer it to capacitive means during discharge phases. This parameter change in energy capture efficiency provides sufficient energy for ESAD operations without compromising reliability
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
The circuit effectively captures 78% of total input energy, significantly surpassing the efficiency of capacitor-only systems, while maintaining efficiency even with additional circuit inefficiencies, meeting the energy demands of advanced bomb fuzes.
Implementation Method 1
Each subcircuit comprises a first inductive means, the first inductive means comprising a first and a second terminal, the first terminal in operative communication with the input source
Implementation Method 2
Each subcircuit further comprises a rectifying means for producing a positive current, the rectifying means comprising a first terminal and a second terminal, the first terminal in operative communication with the second terminal of the first inductive means
Implementation Method 3
Each subcircuit comprises a capacitive means comprising a first terminal and a second terminal, the first terminal of the capacitive means in operative communication with the second terminal of the rectifying means
Data Source
AI summary
An energy capture circuit for capturing energy in response to an input pulse. The circuit is constructed and arranged to transfer input energy in time divided portions among subcircuits. This includes a storage means, a clock means, at least two subcircuits, and at least one transfer circuit. Each subcircuit includes a first inductive means in operative communication with the input source, a rectifying means for producing a positive current in operative communication with the first inductive means, a capacitive means in operative communication with the rectifying means, and a switch means in operative communication with the capacitive means. At least one transfer circuit is in operative communication with each of the switch means of the at least two subcircuits. The output of the clock means is in operative communication with both a first switch means and an inverter means, the inverter means having an output in operative communication with a second switch means.