COREVIA Application Guide
Aluminum Electrolytic Capacitors for Inverters
Application-focused guidance for selecting aluminum electrolytic capacitors in inverter DC-link, energy-storage and auxiliary power stages.
Inverter Design Inputs
Select the capacitor around electrical, thermal and mechanical stress
Inverter DC-link stages require coordinated review of operating voltage, transient margin, capacitance, ripple-current spectrum, ESR, switching conditions, cooling and enclosure temperature. The required case size and mounting method must also fit the mechanical design.
Electrical profile
Define DC bus voltage, transient conditions, required capacitance, ripple current and relevant frequency range.
Thermal conditions
Review ambient and hotspot temperature, airflow, heat paths and neighboring components.
Mechanical and service
Confirm case dimensions, mounting, vibration, duty cycle and expected endurance.