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Considering nonlinear and energy dissipation characteristics of STATCOM, realization of the generalized Hamiltonian system based on the model of system, and design nonlinear controller. This paper discussed the generalized Hamiltonian system and its realization, and established nonlinear dynamic model according to the work principle of STATCOM, completed realization of the generalized Hamiltonian...
Virtual Instruments are new instrument type that combining hardware and software together. A virtual instrument system includes instrument hardware, concerned software and a computer. It can control a machine and get the operating parameter of a machine. An engine test bench was developed with VC++ basing on Virtual Instruments technology. The system can control an engine and a chassis dynamometer...
In this paper, a conventional model describing the torsional behaviour of a generic vertical oilwell drillstring has been presented, and a dynamical sliding mode control has been used to eliminate bit sticking phenomena. In the control system, the bit angular velocities are driven to a desired reference value in spite of the presence of a dry friction modelling the bit-rock contact. The key idea of...
The paper presents that PROFIBUS-DP and CAN bus communication unit is developed. For drilling rig electric control system the communication unit achieves communication function between PLC and diesel generator controller and the remote control function of diesel generator by PLC. The data transmission is reliable and the transmission speed is high in communication unit And it has further consummated...
With rapid development of wind power generation, large capacity wind farms are connected into the transmission system. Comparing with traditional power plant, the transient characteristics of transmission grid including wind farm are worthy investigating. The wind farm based-on wound rotor induction generators (WRIGs) shares high market occupancy in China, but academic researches on this grid-connected...
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