Server Power Supply Harmonic Filtering and Stabilization
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Solution Overview
Problem
Direct mains electricity input to servers without processing leads to increased harmonic currents, distorting voltage and current waveforms, resulting in unstable power factor and potential overloading of power distribution systems, which compromises the reliability and stability of server power supply.
Innovation Solution
A server power supply device and method utilizing a filter capacitor with greater than standard capacitance, a voltage collecting unit, and a processing unit that adjusts current waveforms to synchronize with voltage waveforms, along with an uninterrupted power supply to convert stored DC power to AC, ensuring stable power delivery and harmonic suppression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If direct mains electricity input is used without processing, then cost is reduced and deployment efficiency is improved, but power factor becomes unstable and harmonic currents increase
Solution Approach 1:
The patent introduces a filter capacitor as an intermediary component between the mains electricity input and the server. This capacitor filters out harmonic currents and stabilizes the power factor without requiring complex processing equipment, thus maintaining cost-effectiveness while improving power supply reliability
Solution Approach 2:
The patent changes the electrical parameters of the power supply system by adding a filter capacitor with specific capacitance value. This modification alters the power factor and reduces harmonic distortion, transforming the unstable direct input into a stabilized power supply while keeping the system simple
2Device complexity
If direct mains electricity input is used without processing, then device complexity is reduced, but instantaneous large currents occur causing overloading
Solution Approach 1:
The filter capacitor acts as a cushioning element that absorbs and smooths out instantaneous current surges before they reach the server. This preemptive filtering prevents overloading of power distribution cabinets and transmission cables while maintaining a simple system structure
3Device complexity
If harmonic currents are not filtered, then power supply structure remains simple, but voltage and current waveforms become distorted
Solution Approach 1:
The filter capacitor serves as an intermediary that selectively blocks harmonic frequency components while allowing fundamental frequency power to pass through. This simple component effectively filters distorted waveforms without adding complex processing equipment
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 effectively reduces harmonic currents, improves power factor, enhances power utilization efficiency, and ensures continuous server operation by stabilizing the power supply and reducing the occurrence of instantaneous large currents, thereby improving the reliability and cost-effectiveness of server power management.
Implementation Method 1
One terminal of the filter capacitor is connected to a mains electricity input terminal, and the other terminal of the filter capacitor is grounded. A capacitance of the filter capacitor is greater than a preset standard capacitance.
Implementation Method 2
The voltage collecting unit is connected to the mains electricity input terminal and a control unit. The voltage collecting unit is configured to collect a first voltage inputted from the mains electricity input terminal.
Implementation Method 3
The phase adjusting sub-unit is configured to adjust a waveform of the current inputted from the mains electricity input terminal based on a waveform of the first voltage to generate the first current. A difference between a phase of the waveform of the first current and a phase of the waveform of the first voltage waveform is less than a preset standard angle.
Implementation Method 4
The uninterrupted power supply is configured to convert a stored direct current power into an alternating current power through an inverter circuit and supply power to the server with the generated alternating current power
Data Source
AI summary
A server power supply device and method are provided. The server power supply device includes: a filter capacitor, a voltage collecting unit and a processing unit. One terminal of the filter capacitor is connected to a mains electricity input terminal, the other terminal of the filter capacitor is grounded, and a capacitance of the filter capacitor is greater than a preset standard capacitance. The voltage collecting unit is connected to the mains electricity input terminal and the processing unit, and the voltage collecting unit is configured to collect a first voltage inputted from the mains electricity input terminal. The processing unit is configured to process a current inputted from the mains electricity input terminal based on the first voltage collected by the voltage collecting unit, to generate a first current and supply power to a server with the first current.