Inverter components—Power devices + Capacitors + Inductors (Source: Douyin): The Golden Rule—Six major units (Source: Douyin); Core—IGBT/SiC modules (Source: Denro); Note—DC-Link capacitors (Source: CDE).
I.
Power Devices
IGBT: Main switch for the IGBT inverter bridge (Source: VBsemi); SiC: New standard for SiC MOSFETs (Source: Denro); MOSFET: DC-DC conversion (Source: Littelfuse); FRD: Fast Recovery Diode for rectification (Source: Littelfuse); Module: Power module 650V 20A (Source: VBsemi)—Power devices: IGBT + SiC + FRD (three types).
II.
Capacitors
DC-Link: DC bus capacitor for energy storage and filtering (Source: Elkatek); Electrolytic: Aluminum electrolytic capacitor (Source: Alibaba); Film: DC-Link film capacitor (Source: Denro); MLCC: X8R high-voltage MLCC (Source: Barron); Snubber: IGBT snubber capacitor 2000V (Source: CABO)—Capacitors: Bus + Electrolytic + Film (three types).
III. Inductors
Differential Mode: Differential mode inductor 200µH/80A (Source: CSDN); Common Mode: Common mode inductor 330µH (Source: Alibaba); Filtering: Sine wave filter inductor (Source: Alibaba); PFC: PFC inductor coil (Source: Alibaba); Choke: Choke coil (Source: Huiqin)—Inductors: Differential mode + Common mode + Filtering (three-coil setup).
IV.
Filters
EMC: DC EMC filter (Source: Huiqin); LCL: LC/LCL filter (Source: Douyin); X/Y: X/Y safety capacitors (Source: CSDN); PEC: Single-phase AC PEC capacitor (Source: Huiqin); Output: AC EMC filter (Source: Huiqin)—Filtering: EMC + LCL + X/Y (three-stage setup).
V.
Protection Components
Fusing: DC fuse (Source: Douyin); Circuit Breaking: DC circuit breaker (Source: Douyin); MOV: MOV varistor (Source: CSDN); TVS: TVS transient suppressor (Source: CSDN); SPD: Surge protective device (Source: Douyin)—Protection: Fusing + Circuit breaking + SPD (three lines of defense).
VI.
Control & Thermal Management
DSP: DSP/FPGA controller (Source: Douyin); Drive: Isolated gate driver (Source: onsemi); Sensing: Temperature sensor/MPPT sensing (Source: Douyin); Thermal: Heatsink/Fan (Source: Douyin); Terminals: DC terminal blocks (Source: Douyin)—Control: DSP + Drive + Sensing (three-system setup).
7. Procurement Recommendations
First, select power components (SiC/IGBT); second, choose capacitors (DC-Link); third, source inductors (differential mode/common mode); fourth, install filtering (EMC);
and fifth, add protection (fuses/SPD)—Inverters: Power + Capacitors + Thermal Management (the three core elements).
