Power Supply Circuit With OR Gate For Dual Voltage Sources
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Solution Overview
Problem
Existing power supply circuits fail to provide optimal power to both power system and control system electrical circuits due to differing requirements, leading to potential inefficiencies and risks during abnormal conditions.
Innovation Solution
A power supply circuit with a power conversion circuit and OR circuit that utilizes multiple switching elements and inductors to independently supply power from different voltage sources to the power and control systems, ensuring optimal voltage application and redundancy for stable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a power supply circuit applies terminal voltage directly to both power system and control system electric circuits, then the circuit structure is simple, but the power supply is not appropriate for both electric circuits with different requirements
Solution Approach 1:
The power supply circuit is segmented into two independent power supply paths: one for the power system electric circuit and another for the control system electric circuit. Each path has its own voltage source and switching elements, allowing independent optimization for different requirements while maintaining overall system functionality.
Solution Approach 2:
The circuit employs dynamic switching elements that can change the power supply configuration based on operational requirements. The switching elements enable the circuit to adapt between different power supply modes (normal operation, abnormal operation, voltage source switching) to match the specific needs of each electric circuit.
2Device complexity
If the power supply circuit uses a single voltage source for both systems, then the device complexity is reduced, but the reliability during abnormal conditions deteriorates
Solution Approach 1:
Different voltage sources are assigned to different system portions based on their specific requirements. The power system receives voltage from one source while the control system receives voltage from another source, allowing each to operate optimally under both normal and abnormal conditions.
Solution Approach 2:
The circuit is designed with redundant voltage sources and multiple power supply paths that are prepared in advance for abnormal conditions. When a voltage source becomes abnormal, the circuit can seamlessly switch to alternative sources without interrupting operation, providing beforehand cushioning against failures.
3Ease of operation
If the power supply circuit directly connects voltage sources to both systems, then the ease of operation is improved, but the ability to provide optimal voltage for different circuits deteriorates
Solution Approach 1:
Switching elements are introduced as intermediary components between the voltage sources and the electric circuits. These intermediaries enable precise control over voltage delivery, allowing the circuit to provide optimal voltage levels to each system while maintaining ease of operation through automated switching logic.
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
Ensures stable and optimal power supply to both systems by providing redundant power paths and voltage regulation, reducing the risk of system resets and improving efficiency and reliability during abnormal conditions.
Implementation Method 1
a power conversion circuit configured to receive electric power from a first direct-current voltage source and a second direct-current voltage source, and includes a first inductor, a second inductor, and a plurality of switching elements
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
A power supply circuit 70 includes a power conversion circuit (70). A terminal voltage of a first direct-current voltage source (60) and a terminal voltage of a second direct-current voltage source (82) are applied to the power conversion circuit, and the power conversion circuit includes a first inductor (72a), a second inductor (72b), and switching elements (SW1 to SW4). The power supply circuit includes an OR circuit (80). The OR circuit is a circuit that outputs at least one of electric power of the first direct-current voltage source and electric power of the second direct-current voltage source to a control system electrical load.