Patent
Method and system to influence the power generation of an adjustable speed generator
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TLDR
In this paper, a method and a system to influence the power generation of at least one adjustable speed generator (9) is presented, where the local AC bus (2) is provided with power by adjustable speed generators.Abstract:
A method and a system to influence the power generation of at least one adjustable speed generator (9) are presented. The system comprises a first voltage source converter (4) connected to a local AC bus (2), where the local AC bus (2) is provided with power by the at least one adjustable speed generator (9), a second voltage source converter (6) connected to an AC grid (8), a DC link (5) connected between the first (4) and the second (6) voltage source converter, and at least one control unit (18) to control the first (4) and the second (6) voltage source converters. The at least one control unit (18) performs the method to control the AC voltage (Vloc) in the local AC bus (2) via the first voltage source converter (4) and to modify a reference value for the AC voltage magnitude (Vloc,ref) of the local AC bus (2) in dependence on the AC voltage magnitude (Vgrid) of the AC grid (8).read more
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References
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Variable speed wind turbine having a passive grid side rectifier with scalar power control and dependent pitch control
TL;DR: In this paper, a variable speed wind turbine having a passive grid side rectifier using scalar power control and dependent pitch control is disclosed, and the variable speed turbine may include an electrical generator to provide power for a power grid and a power conversion system coupled to the electrical generator.
Proceedings ArticleDOI
Protection of VSC-multi-terminal HVDC against DC faults
Lianxiang Tang,Boon-Teck Ooi +1 more
TL;DR: In this article, a VSC-multi-terminal high voltage direct current (MTDC) transmission system can survive DC faults by a using protection scheme based on fast, reliable fault detection; blocking of IGBT-circuit breakers (IGBT-CBs) and blocking of the IGBTs of VSCs.
Proceedings ArticleDOI
VSCs based HVDC and its control strategy
TL;DR: In this article, a feed-forward decoupled current control strategy is proposed to improve the performance of DC voltage control, AC active current is used to compensate the DC voltage, and the simulation results got after AC single phase fault verify that the control strategy has fast response and strong stability.
Patent
Ac variable speed driving apparatus and electric vehicle using the same
Kouetsu c,o Fuji Electric Co. Ltd. Fujita,Takao c,o Fuji Electric Co. Ltd. Yanase,Shigenori c,o Fuji Electric Co. Ltd. Kinoshita,Osamu c,o Fuji Electric Co. Ltd. Motoyoshi,Yoshio c,o Fuji Electric Co. Ltd. Ito +9 more
TL;DR: In this paper, an AC variable speed driving apparatus including an AC motor (M) and an inverter (25, 35) for driving the motor is presented, where the inverter supplies AC power to the stator windings so that the synchronous motor and the induction motor are driven independently.
Journal ArticleDOI
Some Issues Related to Power Generation Using Wind Energy Conversion Systems: An Overview
TL;DR: In this paper, the authors present a number of issues related to the power generation from WECs e.g. factors affecting wind power, their classification, choice of generators, main design considerations in wind turbine design, problems related with grid connections, wind-diesel autonomous hybrid power systems, reactive power control of wind system, environmental aspects of power generation, economics of wind power generation.