Switch Boost Circuit Control for Real-Time Efficiency Switching
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Solution Overview
Problem
Existing power semiconductor devices in switching boost circuits suffer from inefficiencies due to conduction and switching losses, which affect the overall electrical energy conversion efficiency.
Innovation Solution
A circuit control method that collects real-time input and output signals of the switching boost circuit, determines the control scheme with the highest electrical energy conversion efficiency, and adjusts the control scheme of the power semiconductor device accordingly to minimize losses and maximize efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a fixed control mode is used for the power semiconductor device, then the control scheme is simple, but the electrical energy conversion efficiency cannot be optimized under varying load conditions
Solution Approach 1:
The patent implements dynamic control mode switching between discontinuous conduction mode (DCM) and continuous conduction mode (CCM) based on real-time detection of inductor current and load conditions. The controller dynamically selects the optimal control mode to minimize conduction losses and switching losses, thereby optimizing electrical energy conversion efficiency across varying load conditions rather than using a fixed control scheme.
Solution Approach 2:
The patent changes control parameters including switching frequency, duty cycle, and control mode based on detected load conditions and inductor current characteristics. By adjusting these parameters dynamically, the system optimizes the balance between conduction losses and switching losses to achieve highest efficiency at different operating points.
2Loss of energy
If real-time control adjustment is implemented to optimize efficiency, then electrical energy conversion efficiency improves, but the control system complexity increases
Solution Approach 1:
The patent employs feedback mechanisms where the controller continuously detects inductor current, output voltage, and load conditions, then uses this feedback information to determine the optimal control mode and adjust control parameters in real-time. This closed-loop feedback system enables dynamic optimization of conduction and switching losses without requiring overly complex external control hardware.
Solution Approach 2:
The control system performs self-adjustment by automatically selecting between DCM and CCM based on detected operating conditions without requiring manual intervention or complex external control. The system serves itself by using its own operational parameters to determine the optimal control strategy, reducing the need for additional complex control infrastructure.
3Loss of energy
If multiple control schemes are evaluated to find the optimal efficiency point, then energy conversion efficiency maximizes, but the calculation and decision-making time increases
Solution Approach 1:
The patent pre-establishes the criteria and thresholds for switching between DCM and CCM based on inductor current characteristics and load conditions. By having these decision criteria predetermined, the controller can quickly determine the optimal control mode without performing complex real-time calculations, thus minimizing decision-making time while still achieving efficiency optimization.
Solution Approach 2:
The patent segments the operating range into distinct regions (DCM region and CCM region) based on inductor current characteristics. By dividing the continuous operating space into discrete controllable segments with clear switching thresholds, the system can rapidly determine which segment the current operation falls into and select the appropriate control mode without exhaustive evaluation of all possible control schemes.
Data Source
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AI summary
The present application provides a circuit control method and unit, and an apparatus. The method is applied to a power supply apparatus; the power supply apparatus comprises a switch boost circuit; and the switch boost circuit comprises at least one power semiconductor device. The circuit control method comprises: collecting an input signal and an output signal of the switch boost circuit; according to the input signal, the output signal, and circuit information of the switch boost circuit, determining, as a target control solution, a control solution having the highest electric energy conversion efficiency from a plurality of control solutions to be selected, wherein the control solutions to be selected comprise control solutions corresponding to each of a plurality of working modes of the switch boost circuit for the at least one power semiconductor device; and controlling on and off of the at least one power semiconductor device according to the target control solution. According to the present application, the control solution of a power semiconductor device can be adjusted in time, thereby improving the overall electric energy conversion efficiency of the circuit.