Power Factor Corrector with Integrated Voltage Detection
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Solution Overview
Problem
Power supply devices with power factor correctors face increased power consumption and manufacturing costs due to the need for detection and protection circuits, which also complicate power level detection and management.
Innovation Solution
A power supply device with a power factor corrector, a standby power supply unit, and a sensor to detect induced power levels, using a power supply controller to activate or deactivate the corrector based on critical and permissible voltage ranges, reducing unnecessary power consumption and manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a power factor corrector is added to correct power factor of input AC power, then power efficiency is improved, but power consumption and manufacturing cost increase due to required detection and protection circuits
Solution Approach 1:
The patent combines the detection circuit and protection circuit functions into the existing power factor corrector circuit. The power factor corrector is designed to simultaneously perform power factor correction, voltage detection, and protection functions, eliminating the need for separate detection and protection circuits. This merging approach maintains power efficiency improvement while reducing additional power consumption and manufacturing costs.
Solution Approach 2:
The power factor corrector is designed as a multi-functional unit that not only corrects the power factor but also detects input voltage levels and provides protection against voltage errors. By making the power factor corrector universal in its functions, the patent avoids adding separate circuits that would increase power consumption and cost, while still achieving the necessary protection and detection capabilities.
2Reliability
If detection and protection circuits are added to the power supply device, then error detection capability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The detection and protection circuits are merged into the power factor corrector circuitry. The power factor corrector includes integrated components that can detect voltage errors and provide protection without requiring separate dedicated detection and protection circuit blocks. This integration reduces the overall device complexity while maintaining reliable error detection capability.
Solution Approach 2:
The power factor corrector is designed to perform multiple functions including power factor correction, voltage detection, and protection. By making the power factor corrector a universal component that handles multiple tasks, the patent reduces the number of separate circuits needed, thereby simplifying the overall device structure while maintaining comprehensive error detection and protection capabilities.
3Measurement precision
If separate detection circuits are added to detect power levels, then measurement capability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The power level detection function is merged into the power factor corrector circuit. The same circuit components used for power factor correction are utilized to detect power levels, eliminating the need for separate detection circuits. This approach maintains accurate power level measurement capability while reducing manufacturing cost by minimizing the number of components and circuits required.
Solution Approach 2:
The power factor corrector is designed as a universal component that simultaneously performs power factor correction and power level detection. By integrating multiple functions into a single component, the patent achieves accurate power level measurement without the increased manufacturing cost that would result from adding separate dedicated detection circuits.
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 solution enables efficient power management by minimizing power consumption and manufacturing costs while allowing for simple and effective detection of multiple power levels, ensuring proper operation of the system by activating the power factor corrector only when necessary.
Implementation Method 1
a transformer to convert input power from the power factor corrector into a predetermined level of standby power
Implementation Method 2
a sensor provided to a second coil of the transformer to detect a level of induced power corresponding to the input power
Data Source
AI summary
Provided are a power supply device and a method of controlling the same. The power supply device includes: a power factor corrector which corrects a power factor of an initial power; a standby power supply unit which is connected to the power factor corrector, the standby power supply unit including a transformer which converts an input power received from the power factor corrector; a sensor which detects a level of an induced power corresponding to the input power; and a power supply controller which determines whether the level of the induced power exceeds a critical value, activates the power factor corrector to correct the power factor of the initial power if the level of the induced power exceeds the critical value, and supplies a driving power to the system based on the level of the induced power.