New energy DC Link capacitors The core function of new energy DC Link capacitors (DC bus capacitors) is to provide stable DC voltage support between rectifiers and inverters, absorb high-frequency ripple currents, suppress bus voltage transients, and protect power devices such as IGBT/SiC. Application Scenario - New Energy Vehicles: Electric drive inverter: This is the most essential application. Capacitors are responsible for stabilizing bus voltage, absorbing ripple current, and protecting IGBT or SiC power modules. On board charger (OBC) and DC-DC: used for voltage conversion and filtering to ensure charging and power supply quality. 800V high voltage platform: requires higher high-frequency characteristics, withstand voltage and temperature resistance of capacitors, and thin film capacitors have become the mainstream choice. Application Scenarios - Photovoltaic and Wind Power: Photovoltaic inverter: to cope with power fluctuations caused by fluctuating sunlight, smooth voltage, improve system reliability and power generation efficiency. Wind power converter: stabilizes the DC bus and handles high power and high ripple current conditions. Application Scenarios - Industrial and Energy Storage: Energy Storage Converter (PCS): Absorbs high pulse current, prevents overvoltage impact, supports peak shaving and valley filling, and supports grid voltage support. Industrial frequency converter: used for motor drive and servo control to ensure stable operation of equipment.
