Variable Output Circuit for Converter Controller
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Solution Overview
Problem
Commercial integrated elements used in converter circuits for environmental-friendly vehicles lack the ability to variably control output based on changing voltage commands due to a fixed input terminal in operation amplifiers, making it difficult to efficiently manage battery charging and discharging, and enhance fuel efficiency.
Innovation Solution
A circuit with a variable output is introduced, featuring an intermediate inversion amplification circuit connected to the fixed input inversion amplification circuit, allowing one input terminal of the second operation amplifier to receive the same fixed input value and another input terminal to receive a variable input corresponding to the output of the first operation amplifier, along with a control value generation circuit to provide an error value for adjusting the output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a commercial integrated element with a fixed input terminal is used in the converter circuit, then the circuit structure is simple and easy to manufacture, but the output cannot be variably controlled based on changing voltage commands
Solution Approach 1:
The patent segments the control circuit into two distinct parts: a fixed input inversion amplification circuit (using operation amplifier 10) and an intermediate inversion amplification circuit (using operation amplifier 20). This segmentation allows the fixed input terminal to maintain its simplicity while the intermediate circuit provides the necessary variable control capability through its second input terminal that receives the output of the first operation amplifier.
Solution Approach 2:
The intermediate inversion amplification circuit acts as an intermediary between the fixed input terminal and the output terminal. It takes the fixed input value from the first operation amplifier and combines it with a variable input signal, producing an output that can be variably controlled while maintaining compatibility with the existing fixed input terminal structure.
2Adaptability or versatility
If the first input terminal of the operation amplifier is applied with a fixed voltage value, then the integrated element is easy to manufacture, but it is difficult to efficiently manage battery charging and discharging control
Solution Approach 1:
The control circuit is divided into segmentation where the first operation amplifier maintains the fixed input terminal for manufacturing simplicity, while the second operation amplifier provides variable control inputs for flexible battery management. This allows different charging and discharging control strategies to be implemented without redesigning the entire integrated element.
Solution Approach 2:
The patent introduces dynamic control capability through the intermediate inversion amplification circuit, which can vary its input signals based on battery state requirements. This allows the system to adapt to different charging and discharging conditions while the fixed input terminal remains manufactured with standard processes.
3Adaptability or versatility
If a fixed input inversion amplification circuit is used, then the circuit is simple to implement, but the converter output cannot follow variable voltage commands
Solution Approach 1:
The intermediate inversion amplification circuit serves as a mediator that translates variable voltage commands into appropriate control signals. It receives the output from the fixed input inversion amplification circuit and combines it with variable input signals, enabling the overall system to follow variable voltage commands while maintaining the simplicity of the original fixed input structure.
Solution Approach 2:
The patent adds another dimension of control by introducing a second input terminal to the intermediate inversion amplification circuit. This additional dimension allows the circuit to process both the fixed input value and variable control signals simultaneously, enabling variable output control without modifying the original fixed input terminal structure.
Data Source
AI summary
A circuit has a variable output that changes an output of a fixed input inversion amplification circuit, which includes a first operation amplifier with one input terminal that is applied with a fixed input value. The circuit includes an intermediate inversion amplification circuit having a second operation amplifier with an output terminal that is connected to another input terminal of the operation amplifier included in the fixed input inversion amplification circuit. One input terminal of the second operation amplifier is applied with the same input value as the fixed input value applied to the one input terminal of the first operation amplifier. Another input terminal of the second operation amplifier is applied with a variable input corresponding to an output of the first operation amplifier.