Modelling and control of single VSI leading experimental hybrid power system integrating a wind turbine simulator
This paper discusses a hybrid wind diesel system aims to validate wind powered section of the experimental system. The experimental system proposed consists of a wind turbine simulator, a permanent magnets generator, a diode bridge rectifier, a step down converter, a bank of battery, a load and a control unit. An other operation of three-phase, four-wire voltage source inverter (VSI) under unbalanced voltage conditions is also investigated.
1 Dynamic Simulation Model of a Hybrid Power System : Performance Analysis
I. Vechiu, H. Camblong, G. Tapia, B. Dakyo, C. Nichita (1) LIPSI-ESTIA, Technopôle Izarbel, 64 210 Bidart, France, i.vechiu@estia.fr, h.camblong@estia.fr, Tel: + 33 (0) 559 438 471, Fax: + 33 (0) 559 438 401 (2) University of Basque Country (UPV-EHU), Spain, isptaotg@sp.ehu.es Tel: + (34) 943 018 682, Fax: + (34) 943 017 130 (3) GREAH – University of Le Havre, France, dakyo@univ-lehavre.fr, nichita@univ-lehavre.fr Tel: +33 232 74 43.31, Fax: +33 232 74 43 38
Transient nonlinear thermal stability analysis of metro cable under pulse power
The load of metro cable system varies a lot from morning rush hours to the evening closure time. With many trains hopping in the rush hours, the long term and economical short term thermal stability become a big issue as a result of the large difference between thermal time constant and the electrical time constant of cable. Based on a 10kV three-core XLPE metro power cable model, the theoretical thermal capacity was calculated according IEC standard. Then, a Finite Element Method (FEM) was employed to analyze the transient electro-thermal phenomena, taking into account various types of power loss in cable system and the non-linear electrical conductivity of the conductor. Finally, the thermal distribution inside the cable was presented as a function of time, and the maximum thermal capacity was predicted in metro cable.