Universal Power Supply for AC to DC Conversion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing power supplies for electrical motors face inefficiencies when dealing with varying AC power sources, including different phases and voltage levels, as they struggle to effectively regulate and convert AC power to DC, manage noise attenuation, and control power factor across diverse input conditions.
Innovation Solution
A power supply system that includes a rectifier with diodes, a capacitor, and a power factor control and boost circuit with inductors and a controller, capable of receiving single phase or three phase AC power over a wide range of voltages, selectively connecting inductors to ground and the capacitor to charge and provide power factor corrected DC power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate regulation circuits are used for single phase and three phase power sources, then voltage and current regulation can be optimized for each specific input type, but the device complexity and number of components increases significantly
Solution Approach 1:
The patent implements a universal power supply circuit that can accept both single phase and three phase AC inputs using the same rectifier, capacitor, and regulation components. The circuit automatically adapts to different input configurations without requiring separate dedicated circuits for each power source type, thereby reducing overall device complexity while maintaining reliable voltage and current regulation for both input types.
Solution Approach 2:
The patent combines the regulation functionality for single phase and three phase power sources into a single integrated circuit architecture. By merging the rectification, filtering, and regulation stages into one unified system that handles both input types, the design eliminates the need for duplicate components and reduces the total number of regulation circuits required.
2Use of energy by moving object
If dedicated AC/DC conversion circuits are designed for each voltage level and phase configuration, then conversion efficiency can be maximized for specific applications, but the adaptability to different power sources decreases
Solution Approach 1:
The power supply circuit is designed with universal input capabilities that accept both single phase and three phase AC voltages across different levels (120V, 277V, 208V, 480V, 575V). The same AC/DC conversion circuitry handles all these configurations, maintaining efficient conversion across the full range of supported inputs without requiring separate dedicated circuits for each voltage and phase combination.
Solution Approach 2:
The circuit incorporates dynamic adaptation mechanisms that automatically adjust to different input configurations. The regulation circuit detects the input phase and voltage level, then dynamically adjusts its operation to optimize conversion efficiency for the specific input type while maintaining compatibility across all supported power sources.
3Reliability
If power factor control circuits are customized for each input configuration, then power factor correction can be precisely controlled, but the device complexity and manufacturing cost increases
Solution Approach 1:
The patent implements a single power factor control circuit that effectively corrects power factor for both single phase and three phase inputs. This universal approach eliminates the need to manufacture separate power factor correction circuits for different input configurations, thereby reducing manufacturing complexity and cost while maintaining reliable power factor control across all operating conditions.
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 system efficiently converts AC power to DC, maintains power factor correction for single phase power, and boosts DC levels for three phase power, ensuring reliable operation of electrical motors by regulating voltage and current levels, and controlling noise and power factor effectively.
Implementation Method 1
a rectifier electrically connected to the at least three input connections, the rectifier having a plurality of diodes that are configured to rectify AC power having one or more phases
Implementation Method 2
a capacitor electrically connected to the rectifier
Implementation Method 3
The power factor control and boost circuit having at least one inductor, at least one diode that is different than the plurality of diodes of the rectifier
Data Source
AI summary
A power supply generates power factor corrected power from AC power having one or more phases and different levels of output voltages. The power supply includes a power factor correction circuit that charges a capacitor through at least one inductor. Each inductor of the at least one inductor is independently connected to the capacitor to charge the capacitor with rectified power.