Power Supply Adjusting Unit for High Bandwidth Signal Tracking
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Solution Overview
Problem
Existing power supply adjusting apparatuses face challenges in achieving fast dynamic voltage adjustment for high bandwidth signals due to magnetic saturation of isolation transformers and bandwidth limitations caused by isolation feedback control, making it difficult to track high bandwidth signals effectively.
Innovation Solution
A power supply adjusting apparatus that eliminates isolation feedback control by using a primary isolation converting unit and a secondary non-isolation adjusting and converting unit, allowing for real-time dynamic voltage adjustment without the need for isolation transformers or optical couplers, enabling high bandwidth signal tracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If isolation feedback control is used in PWM based power supply adjusting apparatus, then voltage stability is improved, but dynamic voltage adjustment speed deteriorates due to bandwidth limitation of isolation optical coupler and transformer magnetic core work space
Solution Approach 1:
The power supply adjusting apparatus is divided into two independent parts: a primary side power supply adjusting unit that performs fast dynamic voltage adjustment, and a secondary side voltage feedback unit that ensures voltage stability. This segmentation allows each part to specialize in one function, resolving the contradiction between speed and stability.
Solution Approach 2:
An intermediary control signal transmission path is introduced where the primary side adjusts voltage based on control signals, and the secondary side provides feedback. The system uses an intermediate approach where full isolation feedback is replaced by a hybrid control mechanism that achieves both fast response and stability without requiring the intermediary optical coupler and transformer to operate at high speeds.
2Adaptability or versatility
If wide-range and fast real-time voltage adjustment is implemented, then adaptability is improved, but isolation transformer magnetic saturation risk increases leading to audio noise and design difficulty
Solution Approach 1:
The harmful function of the isolation transformer is extracted and removed from the dynamic voltage adjustment path. The primary side power supply adjusting unit performs wide-range fast voltage adjustment without relying on the isolation transformer, eliminating magnetic saturation risk and audio noise while maintaining voltage adaptability.
Solution Approach 2:
The traditional approach of using isolation transformer for voltage adjustment is inverted. Instead of using the isolation transformer to perform dynamic voltage adjustment (which causes magnetic saturation), the patent uses the isolation transformer only for electrical isolation and voltage feedback, while the primary side directly performs the dynamic adjustment without magnetic core limitations.
3Reliability
If isolation optical coupler and isolation transformer are used for feedback control, then electrical isolation is improved, but device complexity increases due to additional components and control signal transmission requirements
Solution Approach 1:
The isolation optical coupler and isolation transformer are made multi-functional: they provide both electrical isolation and voltage feedback functions. This universal application reduces the need for separate components for each function, thereby reducing overall device complexity while maintaining reliability.
4Ease of manufacture
If traditional voltage adjusted power supply structure is used, then ease of manufacture is improved, but productivity deteriorates due to inability to track high bandwidth signals quickly
Solution Approach 1:
The power supply adjusting apparatus transitions from a static traditional structure to a dynamic segmented structure. The primary side power supply adjusting unit dynamically adjusts voltage at high speed to track bandwidth signals, while the secondary side provides stable feedback. This dynamic configuration improves signal tracking productivity while maintaining ease of manufacture through modular design.
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 solution enables efficient real-time voltage adjustment and high bandwidth signal tracking, overcoming the limitations of traditional power supply structures by removing the need for isolation units, thus improving the dynamic voltage adjustment capabilities and reducing complexity.
Implementation Method 1
a primary isolation converting unit, connected to an input of a power supply and adapted to: convert voltage or current of an input power supply signal
Implementation Method 2
the magnetic induction intensity of the isolation transformer is relatively great and likely to exceed the saturated magnetic induction intensity of the isolation transformer
Data Source
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AI summary
A power supply adjusting apparatus includes: a primary isolation converting unit, adapted to convert voltage or current of an input power supply signal and output a power supply signal that meets an expected voltage or current requirement; a voltage adjustment controlling unit, adapted to output an adjustment control signal with respect to the output voltage according to an expected output voltage and a tracked signal provided by a powered apparatus; and a secondary non-isolation adjusting and converting unit, adapted to convert the power supply signal outputted by the primary isolation converting unit to an expected voltage according to the adjustment control signal outputted by the voltage adjustment controlling unit and output the adjusted power supply signal.