Power semiconductors in the electronics roadmap

A modeling of a turbo air compressor system (TACS), with a multi-level inverter for driving variable speed, combining an electrical model of an electric motor drive system (EMDS) and a mechanical model of a turbo air compressor, is essential to accurately analyze dynamics characteristics. Compared to the mechanical model, the electrical model has a short sampling time due to the high frequency switching operation of the numerous power semiconductors inside the multi-level inverter. This causes the problem of increased computational time for dynamic characteristics analysis of TACS. To solve this problem, the conventional model of the multi-level inverter has been proposed to simplify the switching operation of the power semiconductors, however it has low accuracy because it does not consider pulse width modulation (PWM) operation. Therefore, this paper proposes an improved modeling of the multi-level inverter for TACS to reduce computational time and improve the accuracy of electrical and mechanical responses. In order to verify the reduced computational time of the proposed model, the conventional model using the simplified model is compared and analyzed using an electronic circuit simulation software PSIM. Then, the improved accuracy of the proposed model is verified by comparison with the experimental results.

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Application of Steinberg Model for Vibration Lifetime Evaluation of Sn-Ag-Cu-Based Solder Joints in Power Semiconductors

IEEE Transactions on Components Packaging and Manufacturing Technology ◽

10.1109/tcpmt.2021.3051318 ◽

2021 ◽

Vol 11 (3) ◽

pp. 444-450

Author(s):

M. Kavitha ◽

Zaid Hamid Mahmoud ◽

Kakarla Hari Kishore ◽

A. M. Petrov ◽

Aleksandr Lekomtsev ◽

...

Keyword(s):

Solder Joints ◽

Power Semiconductors

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Emulation of grid-forming inverters using real-time PC and 4-quadrant voltage amplifier

Forschung im Ingenieurwesen ◽

10.1007/s10010-021-00484-9 ◽

2021 ◽

Author(s):

Wolf Schulze ◽

Maurizio Zajadatz ◽

Michael Suriyah ◽

Thomas Leibfried

Keyword(s):

Real Time ◽

Control Method ◽

Current Control ◽

Control Methods ◽

Test Bed ◽

Test Scenario ◽

Power Semiconductors ◽

Voltage Amplifier ◽

Grid Side ◽

Virtual Synchronous Machine

AbstractA test bed for the evaluation of novel control methods of inverters for renewable power generation is presented. The behavior of grid-following and grid-forming control in a test scenario is studied and compared.Using a real-time capable control platform with a cycle time of 50 µs, control methods developed with Matlab/Simulink can be implemented. For simplicity, a three-phase 4‑quadrant voltage amplifier is used instead of an inverter. Thus, the use of modulation and switched power semiconductors can be avoided. In order to show a realistic behavior of a grid-side filter, passive components can be automatically connected as L‑, LC- or LCL-filter. The test bed has a nominal active power of 43.6 kW and a nominal voltage of 400 V.As state-of-the-art grid-following control method, a current control in the d/q-system is implemented in the test bed. A virtual synchronous machine, the Synchronverter, is used as grid-forming control method. In combination with a frequency-variable grid emulation, the behavior of both control methods is studied in the event of a load connection in an island grid environment.

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