Bidirectional Inverting Buck-Boost Converter for Current Recycling
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Solution Overview
Problem
Existing electrical systems experience significant thermal stress due to the dissipation of discharge current through conventional dissipation circuits, which can lead to excessive heat generation and reduced switching efficiency between inductive loads.
Innovation Solution
A bidirectional inverting buck-boost converter is used to recycle discharge current instead of dissipating it, employing a capacitor and a PWM signal generator to maintain a constant voltage reference, thereby reducing thermal stress and improving switching efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional dissipation circuits are used to handle discharge current, then the circuit structure is simple, but thermal stress increases significantly due to heat generation
Solution Approach 1:
The patent converts the harmful dissipation current that generates thermal stress into a beneficial recycling current that charges the capacitor. The bidirectional inverting buck-boost converter transforms the energy that would otherwise be wasted as heat into stored electrical energy, eliminating thermal stress while maintaining circuit functionality.
Solution Approach 2:
Instead of discarding the discharge current through dissipation, the patent recovers this energy by routing it through the bidirectional inverting buck-boost converter to charge the capacitor. This recovery process eliminates the need for conventional dissipation circuits and their associated thermal problems.
2Ease of manufacture
If conventional dissipation circuits are used, then the implementation is straightforward, but switching efficiency between inductive loads decreases
Solution Approach 1:
The patent improves switching efficiency by converting the harmful dissipation current into useful charging current for the capacitor. This energy recovery mechanism reduces thermal stress and enables faster, more efficient switching between inductive loads compared to conventional dissipation methods.
Solution Approach 2:
The patent changes the operational parameters of the system by introducing a bidirectional inverting buck-boost converter that actively manages current flow. This allows the system to operate in a regenerative mode rather than a dissipative mode, improving switching efficiency and reducing thermal effects.
3Object-affected harmful factors
If discharge current is recycled instead of dissipated, then thermal stress is reduced, but device complexity increases
Solution Approach 1:
The bidirectional inverting buck-boost converter serves multiple functions: it recycles discharge current, charges the capacitor, and enables efficient switching between inductive loads. This multi-functionality justifies the increased device complexity by eliminating the need for separate dissipation circuits and improving overall system performance.
Solution Approach 2:
The patent accepts the increased device complexity as a necessary trade-off to convert harmful dissipation current into beneficial charging current, thereby eliminating thermal stress and improving switching efficiency in the process.
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 recycling of discharge current significantly reduces thermal stress on the electrical system, allowing for efficient switching between loads with minimal heat generation, thus enhancing the overall performance and reliability of the system.
Implementation Method 1
a bidirectional inverting buck-boost converter coupled to the capacitor and configured to couple to multiple loads and to a voltage source
Data Source
AI summary
A system having a load that generates an EMF energy, comprising: a controller; a switch having a control terminal coupled to the controller and a second terminal coupled to the load; a recycling circuit coupled to the load and the second terminal of the switch, the recycling circuit including a capacitor and a converter coupled to the capacitor, a voltage source and the load; and wherein the capacitor is operable to store the EMF energy.