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Rangel-Magdaleno J.,National Institute of Astrophysics, Optics and Electronics | Peregrina-Barreto H.,National Institute of Astrophysics, Optics and Electronics | Ramirez-Cortes J.,National Institute of Astrophysics, Optics and Electronics | Morales-Caporal R.,Technological Institute of Apizaco | Cruz-Vega I.,National Institute of Astrophysics, Optics and Electronics
Shock and Vibration | Year: 2016

The relevance of the development of monitoring systems for rotating machines is not only the ability to detect failures but also how early these failures can be detected. The purpose of this paper is to present an experimental study of partially damaged rotor bar in induction motor under different load conditions based on discrete wavelet transform analysis. The approach is based on the extraction of features from vibration signals at different level of damage and three mechanical load conditions. The proposed analysis is reliable for tracking the damage in rotor bar. The paper presents an analysis and extraction of vibration features for partially damaged rotor bar in induction motors. The experimental analysis shows the change in behavior of vibration due to load condition and progressive damage. © 2016 Jose Rangel-Magdaleno et al.


Sandre-Hernandez O.,National Institute of Astrophysics, Optics and Electronics | Morales-Caporal R.,Technological Institute of Apizaco | Rangel-Magdaleno J.,National Institute of Astrophysics, Optics and Electronics | Peregrina-Barreto H.,National Institute of Astrophysics, Optics and Electronics | And 2 more authors.
IEEE Transactions on Instrumentation and Measurement | Year: 2015

This paper introduces a particle swarm optimization (PSO) algorithm that uses experimental measurements for the identification of the direct (d) and quadrature (q) stator inductances and the stator resistance of permanent-magnet synchronous machines (PMSMs). Strategies for the identification of stator resistance and flux linkage of permanent magnets are also presented. The developed PSO algorithm has the advantages of fast and stable convergence characteristics, and it is relatively easy to implement; moreover, neither voltage source inverters nor closed-loop control strategies are needed. In this paper, the experimental results obtained by PSO are compared with other ones obtained through a current decay test to demonstrate the effectiveness of the presented method. A 32-bit C2000 real-time microcontroller and a commercial surface-mounted PMSM have been used to carry out the experimental measurements. © 1963-2012 IEEE.


Sandre-Hernandez O.,National Institute of Astrophysics, Optics and Electronics | Rangel-Magdaleno J.J.,National Institute of Astrophysics, Optics and Electronics | Tlelo-Cuatle E.,National Institute of Astrophysics, Optics and Electronics | Morales-Caporal R.,Technological Institute of Apizaco
2015 IEEE International Autumn Meeting on Power, Electronics and Computing, ROPEC 2015 | Year: 2015

This paper presents the cosimulation of the model predictive control (MPC) for a permanent magnet synchronous machine (PMSM) based on the technology of field programmable gate array (FPGA). One of the problems that occurs during the digital implementation of MPC control schemes due to its high computational burden is a time delay from the moment in which the controlled variables are sampled and the moment in which the control action is applied, this delay can affect the performance of the system if is not taken into account. To overcome this problem this paper presents a simple delay compensation based on the mathematical model of the machine. Simulations results using hardware description are presented in order to point out the effects of the delay introduced and to validate the presented delay compensation technique. © 2015 IEEE.


Sandre-Hernandez O.,National Institute of Astrophysics, Optics and Electronics | Rangel-Magdaleno J.J.,National Institute of Astrophysics, Optics and Electronics | Morales-Caporal R.,Technological Institute of Apizaco
2015 12th International Conference on Electrical Engineering, Computing Science and Automatic Control, CCE 2015 | Year: 2015

This paper presents a predictive direct torque control (PDTC) for a surface permanent magnet synchronous machine (PMSM). The control algorithm uses linear predictions of the controlled variables to preselect four possible active voltage space vectors (AVSVs) to build the torque demand one step in advance. Then, the trajectory of the torque and flux are predicted and evaluated to minimize the defined cost function, the AVSV that minimize the error is selected and applied in the next control cycle. With this control scheme is possible to obtain a fast dynamic performance similar to the conventional direct torque control, with the advantages of a constant switching frequency and a larger sample time. The control scheme is simulated using Matlab/Simulink to verify the performance under steady and dynamic operation. © 2015 IEEE.


Sandre-Hernandez O.,National Institute of Astrophysics, Optics and Electronics | Rangel-Magdaleno J.J.,National Institute of Astrophysics, Optics and Electronics | Morales-Caporal R.,Technological Institute of Apizaco
2014 11th International Conference on Electrical Engineering, Computing Science and Automatic Control, CCE 2014 | Year: 2014

This paper presents the cosimulation of Direct Torque Control (DTC) for a Permanent Magnet Synchronous Machine (PMSM) based on the technology of Field Programmable Gate Array (FPGA). This approach is suitable to visualize the behavior of the control system before its implementation, which can prevent problems that could lead to damage in the machine under control. The DTC algorithm and the methodology for hardware description language in VHDL are presented. The cosimulation is carried out based on Matlab/Simulink and Active-HDL; simulation results are presented to validate the effectiveness of the presented methodology. © 2014 IEEE.


Morales-Caporal R.,Technological Institute of Apizaco | Pacas M.,University of Siegen
IEEE Transactions on Industrial Electronics | Year: 2011

This paper presents a digital strategy to suppress magnetic- and cross-saturation effects in a sensorless predictive direct-torque-controlled synchronous reluctance machine (SynRM). In SynRMs, the angular position of the rotor can be estimated by using inductance variations due to geometrical effects of the rotor. However, magnetic- and cross-saturation effects lead to large errors on the estimated angular position, particularly when the magnetization level and torque load change. This error deteriorates the performance of the electrical drive when the estimated position of the rotor is used instead of the measured one in a sensorless control scheme. In this paper, it is shown how saturation effects can be readily alleviated by using a digitally implemented quadrature phase-locked loop observer, together with linear regression, so that easy digital implementation, stable operation, and null parametric dependence can be achieved. The experimental results at very low and zero speeds verify the effectiveness of the proposed sensorless control scheme. © 2006 IEEE.


Morales-Caporal R.,Technological Institute of Apizaco | Ordonez-Flores R.,Technological Institute of Apizaco | Bonilla-Huerta E.,Technological Institute of Apizaco | Pacas M.,University of Siegen
2011 IEEE International Electric Machines and Drives Conference, IEMDC 2011 | Year: 2011

A predictive DTC algorithm calculates the switching instants of two optimum active voltage space phasors (AVSPs) that build torque demand one step in advance. After that, the trajectory of the stator flux is predicted for the two preselected AVSPs and the AVSP that leads to the best trajectory of the stator flux at the end of the cycle will be applied to the machine at the next control cycle. With this control scheme is possible to obtain similar dynamic performance as with the conventional DTC scheme, with the advantages of inherently constant switching frequency and equidistant control sampling times for easy digital implementation. As an enhancement of this predictive DTC an encoderless strategy is proposed here. The rotor position is pre-dicted through the future value of the stator flux which is estimated by using the measured stator currents and reconstructed stator voltages. Then, the estimated rotor position is processed by means of a Quadrature Phase-Locked Loop observer, so that, easy digital implementation and stable operation can be achieved. Simulated and experimental results confirm the theoretical work. © 2011 IEEE.


Caporal R.M.,Technological Institute of Apizaco | Pacas J.M.,University of Siegen
International Power Electronics Congress - CIEP | Year: 2010

This paper introduces a technique to estimate the angular position of the rotor of an industrial servo motor with rotor saliency. The estimation technique is based on injection of Test Voltage Signals (TVSs). The TVSs generate stator current transients which are exploited in order to acquire the required rotor position information. Then, the obtained information is processed through a tracking observer to extract useful position signals. Following this strategy no extra hardware, especial current transducers or connections are needed in comparison with a standard servo drive with an encoder. The technique is effective at zero and very low stator frequencies of operation, where the back EMF is very low and model based sensorless techniques commonly fail. Experimental results at very low and zero stator frequency of operation verify the effectiveness of the investigated sensorless strategy. © 2010 IEEE.


Morales-Caporal R.,Technological Institute of Apizaco | Bonilla-Huerta E.,Technological Institute of Apizaco | Arjona M.A.,Technological Institute of La Laguna | Hernandez C.,Technological Institute of La Laguna
IEEE Transactions on Industrial Electronics | Year: 2013

This paper introduces a sensorless predictive direct torque control (PDTC) scheme for surface-mounted permanent-magnet synchronous machines, which is able to operate at a wide range of speeds. At very low and zero speeds of operation, the identification of the rotor position is carried out by applying test voltage signals in order to detect the machine saliency produced by the stator magnetic saturation. Then, the acquired signals that contain the information of the rotor position are digitally processed by means of a quadrature phase-locked-loop tracking observer. At middle and high speeds, the angular position of the rotor is estimated by using a closed-loop sliding-mode observer of the stator flux which uses reconstructed stator voltages and measured stator currents. Then, a gradual changeover between both algorithms is used for coupling both estimated values of the rotor position. Following this strategy, no extra hardware, special current transducers, or additional connections are required in comparison with a standard drive with an encoder. Experimental results in a wide speed range verify high performance of the proposed encoderless PDTC scheme. © 1982-2012 IEEE.


Morales-Caporal R.,Technological Institute of Apizaco | Bonilla-Huerta E.,Technological Institute of Apizaco | Hernandez C.,Technological Institute of La Laguna | Arjona M.A.,Technological Institute of La Laguna | Pacas M.,University of Siegen
IEEE Transactions on Industrial Informatics | Year: 2013

In this paper, a wide-speed-range predictive direct torque control scheme for surface-mounted permanent magnet synchronous machines without rotational transducer is presented. At very low and zero speeds of operation, the identification of the rotor position is carried out by applying test voltage signals within the regular commutation process for predictive torque control, in order to detect the machine saliency produced by the stator magnetic saturation. Then, the acquired signals that are function of the rotor position are digitally processed through a quadrature phase-locked loop tracking observer. At middle-and-high speeds of operation the angular position of the rotor is estimated by using a predictive sliding-mode observer of the stator flux. A changeover algorithm is programmed for coupling both estimated values of the angular position of the rotor. Experimental results in a wide-speed-range obtained by using a hybrid digital system which consist of a digital signal processor (DSP) and of a field-programmable gate array (FPGA) verify the effectiveness of the proposed encoderless predictive control scheme. © 2012 IEEE.

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