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This paper deals with a 3-D development of a thermal model of a power electronic converter mounted on the generator shaft and rotating with it. The dimensions of the heat sink are determined, and the temperature gradients of the converter, its heat sink, and shaft during natural and forced convection are analyzed for variable rotor speeds. It is shown that the chosen sizes of the insulated gate bipolar...
This paper presents the synchronous operation of a novel generator termed as the rotating power electronic brushless doubly-fed induction generator (RPE-BDFIG). It is shown that the generator operates well at the synchronous speed of the main machine, delivering the desired power to the grid. Furthermore, it is illustrated that the RPE-BDFIG behaves similar to a synchronous generator in the synchronous...
This paper deals with a 3-dimensional development of a thermal model of a power electronic converter mounted on the generator shaft and rotating with it. The dimensions of the heat sink are determined and the temperature gradients of the converter, its heat sink, and shaft during natural and forced convection are analyzed for variable rotor speeds. It is shown that the chosen sizes of the IGBT and...
This paper presents the implementation of the extended vector control on a new type of brushless doubly-fed generator when subjected to unsymmetrical voltage dips. This new type of generator has partially rated power electronic converter and exciter mounted on the shaft and rotating with it. The unbalanced voltages introduce positive and negative sequence components in the generator. The negative...
Impact of the different magnitudes of symmetrical voltage dip on the performance of a Rotating Power Electronic Brushless Doubly-Fed Induction Generator is presented. This type of topology consists of a doubly-fed induction generator with power electronic converter and an integrated exciter mounted on the shaft and rotating with it. The transient simulation study is carried out in order to investigate...
A different configuration of brushless doubly-fed induction generator is presented. The power electronic converters are mounted on the rotor rotating with it. The slip rings and carbon brushes are replaced by a rotating exciter which serves as a slip recovery device as well as a means of providing excitation to the rotor of the induction generator. The dynamic model of the brushless topology is derived...
A new configuration for the self-excitation of the induction machine invented by Magnus Lindmark is presented. The power electronic converter using solid state switches is connected to the rotor while the stator is directly connected to the grid. Using appropriate control, the reactive power consumed by the motor can be generated in the rotor resulting in unity power factor operation. The rotor connected...
This paper presents the theoretical model and analysis of a novel topology of the self-excited induction machine using rotating power electronic converters. The power electronic converters are connected to the rotor of the induction machine and it is shown that the machine operates at unity power factor at variable load conditions including rated load. Special control strategy of the two converters...
This paper introduces, simulates and analyzes a new topology of a brushless doubly-fed induction machine with rotating power electronic converter for wind power applications. Topology consists of two machines, one is the main machine which is directly connected to the grid while the second machine is the auxiliary machine which handles the slip power. The rotor of the two machines are connected via...
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