Power Conversion Board Fan Control for Adaptive Cooling
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Solution Overview
Problem
Inverters with increasing power input and complex functions face high energy consumption and noise due to cooling fans operating at fixed maximum rotational speeds across varying operation modes, failing to adapt to diverse heat-dissipation requirements.
Innovation Solution
A control method that adjusts fan rotational speed based on core temperature, heat radiation temperature, and charging/discharging power of the power conversion circuit board, ensuring optimal heat dissipation while minimizing energy consumption and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the cooling fan operates at fixed maximum rotational speed to ensure heat dissipation, then the heat-dissipation effect is maintained, but energy consumption increases and noise becomes large
Solution Approach 1:
The patent applies dynamics by transitioning the fan from fixed maximum speed to variable speed operation. The control method dynamically adjusts fan rotational speed based on real-time temperature monitoring and operation mode detection, allowing the fan to operate at optimal speeds matching actual heat dissipation needs rather than continuously at maximum capacity
Solution Approach 2:
The patent changes the operational parameter of fan rotational speed from a fixed maximum value to a variable parameter that adapts to different conditions. By monitoring temperature and operation mode, the system adjusts the fan speed parameter to match actual cooling requirements, reducing energy consumption when maximum speed is not necessary
2Temperature
If the cooling fan operates at fixed maximum rotational speed to ensure heat dissipation, then the heat-dissipation effect is maintained, but noise generated by the fan increases
Solution Approach 1:
The system dynamically adjusts fan speed based on actual thermal conditions and operation mode, reducing fan speed when maximum cooling capacity is not required. This dynamic adjustment directly reduces noise generation while maintaining adequate heat dissipation performance through intelligent control
3Use of energy by moving object
If the cooling fan operates at variable speed based on temperature and operation mode, then energy consumption is reduced, but the control system complexity increases
Solution Approach 1:
The patent implements feedback control by continuously monitoring temperature and operation mode, then using this information to adjust fan speed. The control method incorporates temperature feedback and operation mode feedback to automatically regulate fan performance, reducing the need for complex manual control systems
Solution Approach 2:
The system performs self-adjustment by automatically detecting operation mode and temperature conditions, then autonomously setting appropriate fan speeds without external intervention. This self-service capability simplifies overall system complexity by eliminating the need for complex external control 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
The method effectively reduces energy consumption and noise by dynamically adjusting fan speed according to heat-dissipation needs, ensuring efficient cooling without unnecessary operation.
Implementation Method 1
determining a core cooling rotational speed based on a core temperature of the power conversion circuit board; determining a plurality of power cooling rotational speeds based on a heat radiation temperature of the power conversion circuit board
Data Source
AI summary
A control method, a control apparatus, a control system, and a readable storage medium are provided. The control method for controlling a fan for a power conversion circuit board includes: determining a core cooling rotational speed based on a core temperature of the power conversion circuit board; determining a plurality of power cooling rotational speeds based on a heat radiation temperature of the power conversion circuit board and charging and discharging power of an energy storage system to which the power conversion circuit board is applied; and controlling the fan to rotate at a maximum rotational speed among the core cooling rotational speed and the plurality of power cooling rotational speeds.