Triple Input Smart Power Supply for Desktop PC
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Solution Overview
Problem
Conventional power supply systems for desktop PCs and other devices face issues of low efficiency, high power wastage, unreliable backup, and line pollution due to frequent blackouts and brownouts, especially in developing countries, with existing UPS systems offering limited backup time and high maintenance needs.
Innovation Solution
The Triple Input Smart Power Supply (TRISP) system, which operates on DC input, seamlessly switches between solar power, utility power, and battery power, using a DC-DC ATX power supply, a high-efficiency AC/DC power supply, and a SMF battery, to provide a reliable and efficient power backup solution with reduced harmonic injection and improved power factor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional online UPS systems are used to protect against blackouts and brownouts, then power backup reliability is improved, but power consumption increases and efficiency decreases
Solution Approach 1:
The power supply system is segmented into three independent input channels (solar DC, utility AC, battery DC) with separate processing paths. Each input is handled by dedicated circuitry that converts to the required DC output voltages, allowing the system to operate efficiently in any mode without the energy losses inherent in conventional UPS architectures that require AC-DC-AC conversion sequences.
Solution Approach 2:
The power supply unit is designed to universally accept multiple input types (DC from solar panels or batteries, AC from utility) and provide consistent DC output for PC components. This multi-functionality eliminates the need for separate UPS and power supply devices, reducing overall system energy consumption while maintaining backup capability.
2Reliability
If conventional SMPS with online UPS systems are used, then power backup is provided, but overall efficiency is low (35%)
Solution Approach 1:
The invention merges the functions of the UPS system and the PC power supply into a single integrated unit. The triple-input design combines backup power functionality with primary power conversion in one device, eliminating the energy losses from sequential AC-DC and DC-AC conversions that occur when separate UPS and SMPS systems are used together.
Solution Approach 2:
The system maintains continuous efficient power conversion by directly converting all input types (solar DC, utility AC, battery DC) to the required DC output voltages in a single conversion stage. This eliminates the interruption and energy loss associated with switching between separate UPS and power supply systems, maintaining continuous useful action with high efficiency.
3Adaptability or versatility
If conventional AC/DC and DC/AC conversion systems are used in UPS, then power conversion is achieved, but system complexity and breakdown chances increase
Solution Approach 1:
Instead of converting AC to DC and then back to AC as in conventional UPS systems, this design inverts the approach by accepting DC inputs (from solar panels or batteries) and directly converting to the required DC output voltages. This eliminates the unnecessary AC conversion stage, reducing system complexity and potential failure points while maintaining power conversion capability.
4Reliability
If online UPS systems are deployed to handle unreliable utility power, then power protection is improved, but harmonic induction and power line pollution increase
Solution Approach 1:
The system replaces the mechanical/electrical AC-DC-AC conversion process with a direct DC-to-DC conversion approach for solar and battery inputs. This substitution eliminates the high-frequency switching and voltage inversion processes that generate harmonics and electromagnetic interference, providing power protection without polluting the power line.
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
TRISP achieves a power saving of 58-65% and extends backup time by 4-5 times, reducing harmonic injection and maintenance needs, while enabling efficient use of solar power, with an efficiency of 90% compared to 35% for conventional SMPS with online UPS systems.
Implementation Method 1
solar power, utility power or rechargeable battery to power a desktop PC
Implementation Method 2
rechargeable battery to power a desktop PC or any other system using DC as its final input power source, reliably standing black outs and brown outs
Data Source
AI summary
The present invention discloses a triple input smart power supply module capable to work with solar power, utility power or battery to empower the desktop PC and any other gadgets where final power source is DC, to stand brown outs and black outs reliably and saving 58 to 65% of power and much more when connected with solar panel. For PC application it comprises of 10-16V DC-DC ATX PC power supplies, 15V DC power supply from 230V AC using PFC techniques, switching rectifier circuits, a solar panel within the range 50-80 Wp, 12V SMF battery, a current limited charger circuit and a monitor working on 12V DC. The invention will be a revolutionary and path breaking venture in the production and use of “Green PCs”. Scope of TRISP is not limited to PCs and it can be extended to any gadget requiring steady and clean input power with a backup facility, where final input power source is DC.