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The ever mounting demand of electrical energy and the keen scarcity of conventional energy sources leads to the burgeon of distributed generation (DG) system. The main abstruse is the harmonization of the DG to the utility grid. Generally current regulated PWM voltage-source inverters (VSI) are used for synchronizing the utility grid with DG source in order to meet the following objectives: 1) To...
In view of the problems of control system of air compressor, we study and design an unattended and intelligent control system of air compressor for supplying constant-pressure air. Considering the time delay of the control system of air compressor, a Fuzzy-PID controller was designed, which was based on PLC. PLC was the key equipment of the entire control system. Besides, field devices were connected...
The basic implementations of waste water aeration systems using microprocessor-based control equipment have been discussed. The configurations of the passive control systems with one-step and two-step blowers and the systems with PED controllers as well as fuzzy controllers have been presented. The advantages and disadvantages of such solutions and the experience gained in operation of the projects...
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