Widely used in all kinds of power electronic equipment DC-link part for DC support, energy storage filtering. In the inverter circuit, it is mainly used for smoothing and filtering the output voltage of the rectifier, absorbing the high amplitude pulsating current from the inverter to the DC-Link, and preventing it from generating high amplitude pulsating voltage in the DC support capacitor on the impedance of the DC-Link, so as to keep the voltage fluctuation on the DC bus in the permissible range.
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Model |
GB/T 17702-2013 | IEC61071-2017 |
| 400~1100V.DC | -40~105℃ | |
| 10~200uF | ||
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Features |
Low ESL,low ESR.
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High frequency large current capacibility. |
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Applications |
Widely used in power electronics circuits for coupling，high frequency filtering and decoupling . |
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Stability and reliability: DC-Link capacitors stabilize voltage and reduce ripple, which improves circuit reliability. Energy storage: The ability to store and release large amounts of energy in a short period of time helps smooth current fluctuations. Long life: Film capacitors, in particular, have longer life and higher stability than electrolytic capacitors.
Low ESR and ESL help reduce power loss and improve efficiency, which is particularly important in high-frequency and high-power applications. Transient suppression: It can effectively suppress voltage transients and spikes, protecting sensitive electronic components from damage.
Certain types of DC-Link capacitors, such as film capacitors, perform well in high-frequency applications, with low equivalent series resistance (ESR) and low equivalent series inductance (ESL).
Inverters: In solar and wind energy systems, DC-Link capacitors are used to smooth DC voltage and improve system efficiency. In electric vehicle drive systems, they are used to smooth battery output voltage. Converters: In AC-DC and DC-DC converters, they are used to smooth the converted DC voltage and reduce ripple. Applied to power modules to ensure stable output voltage.
Used in the drive circuits of industrial motors and household appliances to provide smooth DC power and reduce motor torque fluctuations. In variable frequency drives (VFDs), DC-Link capacitors can balance voltage and improve motor performance. Electric Vehicles (EVs): In the power electronics system of electric vehicles, DC-Link capacitors are used to smooth voltage and provide stable power to motors and other key systems. Suitable for chargers and on-board power converters to ensure efficient operation of battery and motor systems.
Industrial Automation: In industrial automation equipment, DC-Link capacitors are used to stabilize power supply and reduce equipment failure and downtime. Suitable for robots and other high-precision equipment to ensure power supply stability and reliability. Consumer Electronics: In high-performance audio systems and video equipment, DC-Link capacitors are used to reduce power supply noise and improve audio and video quality. Suitable for power management of computers and other electronic devices to provide stable voltage output.
 Life time Expectancy of charge temperature |
 Life time Expectancy of charge voltage |
 Capacitance vs. Temperature |
 Operation current vs.Temperature |
 Operation voltage vs. Temperature |
 (CR Value) IR vs.Temperature |
 Capacitance vs. Frequency |
 Dissipation Factor vs. Frequency |
