Boost Converter Control Unit for Renewable Energy Power Management
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Solution Overview
Problem
Conventional renewable energy power control devices waste power by only using the input source to drive the output stage, preventing its utilization in other modules and failing to supply optimal power to charging or additional modules connected to the input source.
Innovation Solution
A renewable energy power control device that performs PWM control on a boost converter based on the power graph of the output stage, multiplexes output and input signals, and selectively outputs a PWM muxing signal to ensure the output stage remains above a reference voltage while providing optimal power to connected modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the boost converter is controlled to maintain the output stage above the reference voltage, then the output stage voltage stability is improved, but the input source cannot be supplied to other modules and power is wasted
Solution Approach 1:
The control method segments the power management into two independent control loops: one loop maintains the output stage voltage above the reference voltage, while the other loop supplies optimal power to charging or additional modules. This segmentation allows both functions to operate simultaneously without conflict, resolving the contradiction between output stability and power utilization.
Solution Approach 2:
The input source is designed to serve multiple functions simultaneously: it powers the output stage while also supplying charging modules or additional modules. The control unit manages multiple power distribution paths, enabling the input source to be universally utilized across different modules, thereby eliminating power waste while maintaining output stability.
2Reliability
If the input source is used only to drive the output stage, then the output stage voltage is maintained, but the input source cannot be utilized by other modules
Solution Approach 1:
The control unit segments the power distribution function, creating separate control pathways: one for maintaining output stage voltage and another for supplying charging or additional modules. This segmentation enables the input source to be adaptively distributed to multiple destinations simultaneously.
Solution Approach 2:
The input source is designed with multi-functionality to serve both the output stage and external modules (charging modules or additional modules). The control unit manages this universal utilization by dynamically allocating power based on system needs, thereby enhancing adaptability while maintaining output voltage stability.
3Productivity
If PWM control is performed on the boost converter based on output stage power graph, then optimal power is supplied to connected modules, but the device complexity increases
Solution Approach 1:
The control unit autonomously performs PWM control based on the output stage power graph without requiring external intervention. It automatically adjusts the boost converter duty cycle to maintain output voltage while optimizing power distribution to connected modules, enabling self-service operation that improves productivity without proportionally increasing operational complexity.
Solution Approach 2:
The system implements feedback control by continuously monitoring the output stage voltage and adjusting the boost converter accordingly. The control unit uses the power graph information to dynamically adjust PWM duty cycle, creating a closed-loop feedback system that optimizes power distribution while managing control complexity through systematic feedback mechanisms.
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
Enables the use of input power by the charging or load module without falling below the reference voltage, allowing other modules to utilize the input source and optimizing power distribution using a low-specification hardware configuration.
Implementation Method 1
a boost converter which inputs and boosts up an input source and supplies the boosted input source to an output stage
Implementation Method 2
The control unit may perform a PWM control on a boost converter based on a power graph of the output stage
Data Source
AI summary
A renewable energy power control device may include a boost converter that receives and boosts up an input source and supplies the boosted input source to an output stage, and a control unit that controls, by using a sampling voltage of the output stage, such that the output stage does not fall below a reference voltage, and, by using a sampling voltage of the input source, such that optimal power is supplied to a charging module or additional module connected to the input source. Therefore, the charging module or additional module can use the power supply of the input source, the output stage is driven without falling below the reference voltage, the charging module or additional module is also driven, and renewable energy can be used by controlling a boost converter such that an output stage is within a reference voltage range and other modules can use the input source.