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Inverter based electric power source constructed of semi-conductor switches is the most important part of DG, and its output characteristics is quite different from that of traditional generator power source during outward short circuit. Therefore, the operation and control of distribution grid will become very difficult if the proportion of inverter source is higher enough. A series of factors which...
It is urgent for modern society to save energy and protect environment. But the efficiency of traditional lighting equipment which occupies a rather high proportion of total electric load is very low. Now, they are more and more instead by power electronics based devices, such as energy-saving lamps or LED lamps. For the different characteristics from that of traditional devices, the new kind of lighting...
In this paper, a dipolar field-based 3-dimensional homing guidance method is presented to solve the intelligent docking problem of an autonomous underwater vehicle (AUV). The AUV obtains its coordinates in the global coordinate frame by using the measured locations of transponders fixed in the dock station. The desired yaw and pitch angles based on the dipolar field are calculated to guide the AUV...
Small RNAs play an important role in plant immune responses. However, their regulatory function in induced systemic resistance (ISR) is nascent. Bacillus cereus AR156 is a plant growth‐promoting rhizobacterium that induces ISR in Arabidopsis against bacterial infection. Here, by comparing small RNA profiles of Pseudomonas syringae pv. tomato (Pst) DC3000‐infected Arabidopsis with and without AR156...
VSC-HVDC system, such as in offshore wind farms, will be widely used in the next few years. The controller parameters of both rectifier and inverter will have a great impact on both the system itself and the other parts of the transmission system due to the connection of DC transmission line. Usually, the controller parameters on each side are designed and tested separately. Therefore, the performance...
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