Tsinghua University

Liqiang Yuan

Zhengming Zhao

Boyang Li

Kainan Chen

Tian Tan

Chen Wang

Ye Jiang

Bochen Shi

Jianning Sun

Yatao Ling

Qing Gu

An electrical energy router includes cascaded submodules. Each submodule of the cascaded submodules includes a rectifying stage and an isolating stage. The rectifying stage includes a structure of a neutral point clamped full bridge. The isolating stage includes a DC-DC converter, which includes a primary side, a secondary side and a transformer. The primary side includes a structure of a neutral point clamped half bridge. A DC side of the neutral point clamped half bridge is connected to a DC bus line of the rectifying stage.

Electrical energy router and electrical energy router submodule

An IGBT modeling method includes creating piece-wise line functions describing a collector-emitter voltage v, a collector current iand a gate-emitter voltage vof the IGBT during a switching-on transient based on an internal structure of the IGBT and transient processes of the IGBT. The IGBT modeling method further includes creating piece-wise line functions describing the collector-emitter voltage v, the collector current iand the gate-emitter voltage vof the IGBT during a switching-off transient based on the internal structure of the IGBT and the transient processes.

IGBT modeling method and circuit simulation method

A backward discrete state event driven power electronics simulation method includes simulation initialization and a k-th simulation step, k&#x2265;0. The k-th simulation step includes obtaining a system state equation at the k-th step. The k-th simulation step further includes determining alternative quantized values for each of state variables at a k+1-th step. The k-th simulation step further includes setting up a finite state machine to determine quantized values for the state variables at the k+1-th step one by one. The k-th simulation step further includes calculating a vector of derivatives based on the quantized values at the k+1-th step and the system state equation. The k-th simulation further includes determining the time of the k+1-th simulation step based on occurrence times of events.

Backward discrete state event driven power electronics simulation method, power electronics simulation computation apparatus and computer-readable storage medium

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Beijing, China

Liqiang Yuan