Digital active gate control for a three-phase inverter circuit for a surge voltage suppression and switching loss reduction

In this paper, a new application of three-phase inverter using zero-vector control is proposed. In order to control the amplitude of output current, the d-q axis coordinate transformation, hysteresis controller and space vector strategy are adopted. Besides, the frequency of output current also can be adjusted by zero-vector control. Therefore, the proposed inverter has lower switching loss, higher system efficiency and better dynamic response. Use VisSim simulation software and TI TMS320F28335 chip to implement the proposed control strategy. The controller has several advantages such as easier to control, smaller circuit size and fully digital design etc. Finally, the experimental results are compared with the proposed theory for verifications.

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Parasitic extraction and power loss estimation of power devices

Journal of Mechanics ◽

10.1093/jom/ufaa022 ◽

2020 ◽

Vol 37 ◽

pp. 134-148

Author(s):

H-C Cheng ◽

Y-H Shen ◽

W-H Chen

Keyword(s):

Circuit Simulation ◽

Three Dimensional ◽

Loss Estimation ◽

Oxide Semiconductor ◽

Switching Loss ◽

Power Devices ◽

Power Mosfet ◽

Phase Inverter ◽

Three Phase ◽

Three Phase Inverter

Abstract This study aims to characterize the switching transients and power losses of silicon (Si) power metal–oxide–semiconductor field-effect transistor (MOSFET) in an SOT-227 package (hereinafter named “power MOSFET package”) and Si power MOSFET-based three-phase MOSFET inverter during load cycles through numerical modeling and experimental validation. The three-phase inverter comprises six power MOSFET packages as switches for brushless direct current motor drive. First of all, three-dimensional electromagnetic analyses are performed to extract the parasitic parameters of these two power devices. Subsequently, the device model and the previously derived package model of the power MOSFET are combined together in circuit simulation of a double pulse test (DPT). The calculated waveform profiles and switching times are compared with those obtained from the DPT experiment. Likewise, an effective compact circuit simulation model of the three-phase six-switch inverter, considering the parasitic effects, is developed for the switching loss estimation in the first switching interval of the six-step switching sequence. At last, parametric study is performed to explore, respectively, the influences of some crucial factors on the parasitic inductances and switching transients of the power MOSFET package and the switching losses of the three-phase inverter.

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Three-phase inverter circuit PWM controller which is based on CPLD

2011 Second International Conference on Mechanic Automation and Control Engineering ◽

10.1109/mace.2011.5988049 ◽

2011 ◽

Author(s):

Qiong Wu ◽

Liyu Tao ◽

Ming Zhang

Keyword(s):

Phase Inverter ◽

Three Phase ◽

Inverter Circuit ◽

Three Phase Inverter

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Multi-Mode Voltage Sag/Swell Generator Based on Three-Phase Inverter Circuit

Energies ◽

10.3390/en14206520 ◽

2021 ◽

Vol 14 (20) ◽

pp. 6520

Author(s):

Qiguo Han ◽

Xing Wang ◽

Pengfei Hu ◽

Maolin Wang ◽

Xu Luo ◽

...

Keyword(s):

Low Voltage ◽

Power Grid ◽

Thermal Power ◽

Voltage Sag ◽

Phase Inverter ◽

Grid Voltage ◽

Three Phase ◽

Inverter Circuit ◽

Three Phase Inverter ◽

Multi Mode

The voltage ride through capability of the major auxiliary variable-frequency drive (VFD) in large thermal power plants is the key technical issue of power grid and source coordination. In order to test the high voltage ride through (HVRT) and low voltage ride through (LVRT) capability of the auxiliary VFD, it is necessary to develop a power supply to simulate different grid voltage sag and swell accurately. In this paper, a generator (VSSG) based on the common three-phase inverter circuit that can simulate multi-mode voltage sag/swell is proposed. The designed main circuit consisting of transformer, rectifier, DC split capacitors, three-phase inverter, and LC-filter can generate single-phase and three-phase voltage sag, swell, and phase angle jumping flexibly. The developed control strategies composed of the double closed-loop control and the neutral voltage balance control achieve accurate output, fast dynamic response, and step-less adjustment. Simulation and experiment results verify the multi-mode voltage simulation performances of the proposed VSSG, which can be effectively used to emulate power grid voltage sag and swell phenomena under the IEEE 1159 and IEC standards.

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