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High-Capacity DC Support Capacitor - Reliable China Suppliers and Factory for Energy Storage Solutions
DC support capacitor benefits
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High-voltage withstand ability: DC support capacitor is capable of supporting higher voltage more than normal capacitors. So it is suitable for dc power filter and high voltage dc transmission.
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Low loss: Its low loss feature make it is resultful to work as store and release electrical energy, as well as increase efficient and performance of the system.
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Long-lifespan: By applying for high-quality insulation material and stable dielectric, we make it’s reliable capacitance value and low ESR.
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Good frequency response: Even in high frequency ranged dc support capacitor performed good, keep its capacitance value stable and low ESR, such as power electronics, communication devices etc.
DC support capacitor Features
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Dielectric: Self-healing metalized film
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Expoxy perfusion
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Hermetically sealed for prevent capacitor from moisture
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Custom-design available
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High voltage range of 1KV-100KV with standard and custom design options
DC voltage filtering capacitor application
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DC link filtering/support
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Resonant filtering
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Active correction (Power factor correction)
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HVDC
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High Power DC Supply
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Speed converter (drives and traction)
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Windmills
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Substation
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Solar power
Reference delivered capacitors
| No | Project | Capacitors specification | Capacitor type |
|---|---|---|---|
| 1 | Offshore wind power transmission | 9000uf 2800VDC | Dry type metalized film capacitor |
| 2 | Power Distribution network | 8000uf 2800VDC | |
| 3 | Low frequency transmission | 7000uf 2800VDC | |
| 4 | Power distribution network | 10000uf 2200VDC | |
| 5 | SVG | 4000uf 2800VDC | |
| 6 | SVG | 12000uf 2300VDC | |
| 7 | SVG | 10000uf 2300VDC | |
| 8 | Frequency conversion | 2000uf 6000VDC | |
| 9 | SVG | 20000uf 2100uf | |
| 10 | N | 4000uf 4000VDC | |
| 11 | N | 100uf 7500VDC | |
| 12 | N | 2200uf 12000VDC | |
| 13 | N | 11000uf 2200VDC | |
| 14 | N | 7500uf 2800VDC | |
| 15 | N | 6000uf 2800VDC |
Flair workshop show
Winding & Metal Processing
Winding
Thermo-compression
Metal spraying
Assembly & Laboratory
Capacitor core energization
Welding
Laboratory
Laboratory Testing
Finished product testing
Frequently Asked Questions (FAQ)
Q: What is the primary function of a DC support capacitor?
A: A DC support capacitor (also known as a DC link capacitor) is designed to support and stabilize the DC voltage in power electronics systems by filtering out high-frequency ripple currents and storing energy.
Q: Why are metalized film capacitors preferred for DC support applications?
A: Metalized film capacitors offer self-healing properties, exceptionally low ESR (Equivalent Series Resistance), low loss factor, high voltage withstand capabilities, and a significantly longer operational lifespan compared to traditional electrolytic capacitors.
Q: Can these DC capacitors be customized for specific industrial projects?
A: Yes, custom designs are fully available. Standard and custom options cover a wide high-voltage range from 1KV up to 100KV to match specific capacity and configuration requirements.
Q: What environmental protection features do these capacitors have?
A: They feature epoxy perfusion and are hermetically sealed to prevent moisture penetration, ensuring stable dielectric performance and reliable capacitance values even in harsh environments.
Q: In which fields are DC filtering capacitors most commonly applied?
A: They are widely applied in modern power systems including wind power converters, solar power inverters, HVDC (High Voltage Direct Current) transmissions, substations, SVG (Static Var Generators), and high-power DC power supplies.