Víctor H. Cárdenas

  • Citations Per Year
Learn More
Through this paper we are presenting a study of seismic regionalization for continental Chile based on a neural network. A scenario with six seismic regions is obtained, irrespective of the size of the neighborhood or the range of the correlation between the cells of the grid. Unlike conventional seismic methods, our work manages to generate seismic regions(More)
This paper presents a cascaded five-level inverter DC separated sources and output LC filter. The objective is to propose and develop a passivity-based controller (PBC) and empathize its advantages when is applied in multilevel inverters, especially in cascaded multi-cell power converters (inverter/rectifier). The focus of the developed PBC, is that the(More)
Speed estimation is the most important issue in sensorless drives for induction motors. Estimation generally is based on the currents and voltages measurements; therefore, the correct speed estimation could be wrong due to deficiencies in the voltages and currents acquisition. This paper presents the effects in the speed estimation caused by the erroneous(More)
This paper studies the performance of the Back to Back converter to control the power flow between two interconnected AC systems under unbalance grid voltage and voltage sag conditions. The first one system is considered the electrical grid, and the second one a Double Feed Induction Generator. To maintain the power transference under these disturbances a(More)
This paper presents a comparison of two control strategies applied to a Single-Phase Back to Back converter. Both techniques use two loops: one inner current loop and an outer voltage loop. The first control strategy is based on a classical PI control. The second one uses a control scheme to decouple the active and reactive component of the input current,(More)
Single phase back to back (SPBTB) converter is widely used for power transfer in order to increase the performance of electrical power systems; however to take advantage of a SPBTB response it is necessary to avoid over-modulation conditions. This paper deals with an analytical procedure to obtain a SPBTB operating region to guarantee power transfer of each(More)
HF-link converters have been studied for several years but they have not been exploited as widely as DC bus based topologies. HF-Link Cycloconverter based topology offers a way to reduce power processing stages redundancy present in conventional DC-bus isolated inverters. However, Cycloconverters have been limited to medium - high power applications because(More)
This paper discusses a Back-to-Back (BTB) power converter based solution to avoid the overloaded operation of two low voltage feeders operating in parallel. With this purpose the BTB converter based on eight conditions of operation is proposed as means to exchange load between feeders to prevent overload conditions and balance the load on power transformers.
This paper presents some practical issues to be considered in the PWM control system of a single-phase matrix converter used in a series active filter, avoiding short circuit conditions. The matrix converter is controlled using the four-step strategy, which is built digitally in a FPGA system. The harmonic compensator control is generated by using the(More)
This paper present a novel multilevel inverter working as Adjustable Speed Drive (ASD) that avoids the use of the main bulky power transformer commonly used in the cascade multilevel inverter topology. Besides, the proposed topology maintains the regenerative capability in order to get a full performance as ASD. The model of the power converter is presented(More)