Bidirectional Voltage Conversion Circuit With Single-Circuit Switching
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Solution Overview
Problem
Existing bidirectional power conversion systems require two sets of circuits for DC-to-AC and AC-to-DC conversions, leading to increased power consumption and higher hardware costs.
Innovation Solution
A voltage conversion device that uses a single circuit structure to perform bidirectional voltage conversion by employing a filter circuit, inductors, conversion modules, and a control circuit to dynamically switch between different conversion states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two sets of circuits are used for DC-to-AC and AC-to-DC conversions, then bidirectional power conversion function is achieved, but hardware cost and power consumption increase
Solution Approach 1:
The patent implements a single power conversion circuit that can perform both DC-to-AC and AC-to-DC conversions by dynamically switching between different operational modes. The circuit uses the same hardware components (switches, inductors, capacitors) for both conversion directions, eliminating the need for separate circuit sets and thereby reducing power consumption while maintaining bidirectional functionality.
Solution Approach 2:
The patent merges the DC-to-AC conversion circuit and AC-to-DC conversion circuit into a single integrated power conversion circuit. By combining the functionality of two separate circuits into one, the patent reduces overall power consumption and hardware complexity while achieving bidirectional power conversion capability.
2Adaptability or versatility
If two sets of circuits are used for DC-to-AC and AC-to-DC conversions, then bidirectional power conversion function is achieved, but hardware cost increases
Solution Approach 1:
The patent implements a single power conversion circuit that can perform both DC-to-AC and AC-to-DC conversions by dynamically switching between different operational modes. The circuit uses the same hardware components (switches, inductors, capacitors) for both conversion directions, eliminating the need for separate circuit sets and thereby reducing hardware cost while maintaining bidirectional functionality.
Solution Approach 2:
The patent merges the DC-to-AC conversion circuit and AC-to-DC conversion circuit into a single integrated power conversion circuit. By combining the functionality of two separate circuits into one, the patent reduces hardware cost and complexity while achieving bidirectional power conversion capability.
3Use of energy by stationary object
If a single circuit structure is used for bidirectional conversion, then hardware cost and power consumption are reduced, but circuit switching control complexity increases
Solution Approach 1:
The patent employs dynamic switching control to enable a single circuit to perform both DC-to-AC and AC-to-DC conversions. The control circuit dynamically adjusts the switching states of power switches based on the desired conversion direction, allowing the same hardware to adapt to different operational modes without requiring separate dedicated circuits, thus reducing power consumption while managing control complexity through systematic switching strategies.
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 solution significantly reduces hardware costs and power consumption by eliminating the need for two separate circuit sets, while maintaining high conversion efficiency and compact size.
Implementation Method 1
The first inductor has a terminal electrically connected to the first AC terminal, and the second inductor has a terminal electrically connected to the second AC terminal
Implementation Method 2
The filter circuit is electrically connected to a first AC terminal and a second AC terminal
Data Source
AI summary
A voltage conversion device includes a filter circuit, a first inductor, a second inductor a first conversion module, a second conversion module, and a control circuit. The filter circuit is electrically connected to a first AC terminal and a second AC terminal. The first inductor is electrically connected to the first AC terminal and a first conversion terminal. The second inductor is electrically connected to the second AC terminal and a second conversion terminal. The first conversion module is electrically connected to a first DC voltage terminal, a second DC voltage terminal, and the first conversion terminal. The second conversion module is electrically connected to the first DC voltage terminal, the second DC voltage terminal, and the second conversion terminal. The control circuit transmits switch-control signals to the first conversion module and the second conversion module. A voltage conversion method is used with the voltage conversion device.