Power Converter with Parallel connected IGBTs for Ultra-High-Speed Elevators

Development of inverter structure for reducing switching loss imbalance among parallel connection and among three phases

“…In addition, effects of DC‐side stray inductance are also reported; particularly, reducing variation of DC‐side stray inductance proves effective to suppress switching loss imbalance 9,10 . DC‐side stray inductance is caused by circuit structure, and bus bar designs were proposed to reduce inductance variation 11–14 . For example, a bus bar design with three parallel SiC power modules is described in literature; 12 specifically, slots are provided to reduce variation of stray inductance.…”

“…For example, a bus bar design with three parallel SiC power modules is described in literature; 12 specifically, slots are provided to reduce variation of stray inductance. Literature 13 compares one‐phase bus bar designs in a three‐phase inverter with four parallel IGBT power modules. Thus, bus bar designs were proposed to reduce variation of stray inductance in parallel connection, but the issue of reducing stray inductance variation between the three phases has not been sufficiently explored.…”

Development of Inverter Structure for Reducing Switching Loss Imbalance among Parallel Connection and among Three Phases

“…9,10 DC-side stray inductance is caused by circuit structure, and bus bar designs were proposed to reduce inductance variation. [11][12][13][14] For example, a bus bar design with three parallel SiC power modules is described in literature; 12 specifically, slots are provided to reduce variation of stray inductance. Literature 13 compares one-phase bus bar designs in a three-phase inverter with four parallel IGBT power modules.…”