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Fast Response Research of Magnetically Controlled Reactor
Chen Feng,Wang Jun,Zheng Hao,Lu Wenhua,Tian Cuihua,Yuan Jian,Chen Baichao,Yuan jiaxin 보안공학연구지원센터 2015 International Journal of Smart Home Vol.9 No.10
As a kind of reactive power compensation equipment with control flexibility and high reliability, magnetically controlled reactor (MCR) is widely used in reactive power compensation, over-voltage limitation and other aspects. However, low responding speed has severely limited the application of MCR. Especially when applied to suppress voltage flicker and arc suppression coil, the slow response of MCR will decrease the stability of control system, even causing the system shock. To improve the response performance of MCR, in this paper, the working principle of MCR has been analyzed, and a fast response structure of MCR has been designed with the novel fast response structure, fast excitation and rapid demagnetization can be achieved. According to the simulation and experiment results, the effectiveness of the proposed structure is verified by limiting the response time in 30ms.
The Pareto Optimal Control of Inverter based on Multi-objective Immune Algorithm
Jiaxin Yuan,Gang Xue,Zhen Zhao,Baichao Chen 전력전자학회 2015 ICPE(ISPE)논문집 Vol.2015 No.6
In this paper, an immune-algorithm-based PARETO optimal control strategy is proposed for multi-objective optimization of the output waveform quality and switching loss of a single-phase inverter. A picture of the relationship between the waveform quality and switching losses in the form of the Pareto frontier is plotted, forming an optimal Pareto optimal solution set in different inductive load. The calculation of the switching loss relies on the following factors: data sheet providing the characteristic parameters of the devices, load current (collector current), the switching gate signal and the DC bus voltage. Finally, the experimental platform based on DSP+FPGA as the core control system is established and adequate experiments are carried out, using the Holzer current sensor to collect the inverter output current signal and the thermistor PT100 to indirectly measure the switching loss of the inverter. Simulation and experimental data show that the method is feasible and effective.