The integrated control strategy of microgrid based on the voltage source inverter

2014 ◽  
Author(s):  
Xiao-tian Feng ◽  
Ai-min Zhang ◽  
Hang Zhang ◽  
Jing-jing Huang ◽  
Li-xia Hao
Keyword(s):  
Control Strategy ◽  
Integrated Control ◽  
Voltage Source ◽  
Voltage Source Inverter

RLC passive damped LCL single-phase voltage source inverter with capability to operate in grid-connected and islanded modes: design and control strategy

2020 ◽  
Vol 102 (4) ◽  
pp. 2509-2519
Author(s):  
José Carlos Ugaz Peña ◽  
Leonardo Poltronieri Sampaio ◽  
Moacyr Aureliano Gomes de Brito ◽  
Carlos Alberto Canesin
Keyword(s):  
Control Strategy ◽  
Single Phase ◽  
Voltage Source ◽  
Phase Voltage ◽  
Voltage Source Inverter ◽  
And Control

scholarly journals Online Junction Temperature Cycle Recording of an IGBT Power Module in a Hybrid Car

2015 ◽  
Vol 2015 ◽  
pp. 1-14 ◽  
Author(s):  
Marco Denk ◽  
Mark-M. Bakran
Keyword(s):  
Integrated Control ◽  
Control Unit ◽  
Relevant Information ◽  
Junction Temperature ◽  
Voltage Source ◽  
Temperature Cycle ◽  
Temperature Sensitive ◽  
Voltage Source Inverter ◽  
Power Module ◽  
Temperature Cycles

The accuracy of the lifetime calculation approach of IGBT power modules used in hybrid-electric powertrains suffers greatly from the inaccurate knowledge of application typical load-profiles. To verify the theoretical load-profiles with data from the field this paper presents a concept to record all junction temperature cycles of an IGBT power module during its operation in a test vehicle. For this purpose the IGBT junction temperature is measured with a modified gate driver that determines the temperature sensitive IGBT internal gate resistor by superimposing the negative gate voltage with a high-frequency identification signal. An integrated control unit manages the TJ measurement during the regular switching operation, the exchange of data with the system controller, and the automatic calibration of the sensor system. To calculate and store temperature cycles on a microcontroller an online Rainflow counting algorithm was developed. The special feature of this algorithm is a very accurate extraction of lifetime relevant information with a significantly reduced calculation and storage effort. Until now the recording concept could be realized and tested within a laboratory voltage source inverter. Currently the IGBT driver with integrated junction temperature measurement and the online cycle recording algorithm is integrated in the voltage source inverter of first test vehicles. Such research will provide representative load-profiles to verify and optimize the theoretical load-profiles used in today’s lifetime calculation.

scholarly journals A Novel H∞ Robust Control Strategy for Voltage Source Inverter in Microgrid

2021 ◽  
Vol 9 ◽  
Author(s):  
Hongtao Shi ◽  
Jie zhang ◽  
Jian Zhou ◽  
Yifan Li ◽  
Zhongnan Jiang
Keyword(s):  
Robust Control ◽  
Control Strategy ◽  
Control Strategies ◽  
Voltage Control ◽  
Voltage Source ◽  
Voltage Source Inverter ◽  
Operation Conditions ◽  
Control Robustness ◽  
Voltage Controller ◽  
Grid Side

The voltage control performance of the voltage source inverter (VSI) in a microgrid may change under different load conditions. However, in the case of traditional control strategies, the robustness of VSI is insufficient. In response to the above problems, a novel robust control scheme for VSI in the microgrid based on H∞ hybrid sensitivity is proposed in this study. The grid-side interference during the VSI operation is taken as the variable, and the sensitivity function is designed to build a H∞ robust voltage controller for VSI. In addition, an adaptive virtual impedance group is designed to further improve the voltage control robustness under a variety of operation conditions. Finally, comparative simulation experiments are carried out to verify the anti-interference ability of the proposed control strategy under different working conditions.

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