A Four Leg Matrix, Research Paper Example

Abstract

The purpose of the research is to review the planning, administration and operation of a terrestrial power unit designed for use on aircraft during scheduled ground maintenance.  The models which have been applied in the research are a 7.5 kW, 10 kVA and 90 kVA model. The reason for the use of these models in the four legged conversion matrix system is to facilitate more efficient transmission of power to the aircraft systems during scheduled ground maintenance. The application of the three phased to three phased connections have been suggested instead of the conventional back to back converter design.  The four legged three phase direct alternating current matrix conversion devices have been reviewed in simulated and actual conditions.  The conditions have applied the use of Production and LC filtering systems.  The frameworks applying an ABC referencing system has been implemented in order to adapt to the steady and modifying conditions of the system during operation.  The results of the research were that the four legged three phased direct alternating current matrix conversion systems were shown to be more efficient in the transmission of power to aircraft during ground maintenance The perspectives of Arevaló et al. (2007), Jensen et al. (2000), Rohouma (2013) and Zanchetta et al. (2005) have been accessed in this research.

Design, Control and Implementation of a Four Leg Matrix Converter for Ground Power Supply Applications

The technology which applies the matrix converters that operate by means of direct conversion of alternating current have been the subject of recent study. The matrix conversion devices have demonstrated higher energy transmission efficiency with regards to the applications in the field of aircraft maintenance (Arevaló et al., 2007; Rohouma, 2013).  The purpose of the research is to examine the application of the three phase direct alternating current four leg conversion devices as terrestrial power units for ground aircraft maintenance. The fourth leg of the alternating conversion device is applied in order to provide a conduit for the zero sequence elements in the process of supplying power for nonlinear or imbalanced loads (Rohouma, 2013; Zancettti et al., 2005).

An elevated bandwidth coordinator is needed in order to administrate the production of voltage of the direct alternating current matrix conversion device on a production frequency of 400 Hz. Notwithstanding, the bandwidth that is used by the controller is restricted as a result of the decreased proportion of the conversion switching device frequencies and the basic frequency. In these circumstances, the results have been demonstrated in the form of distortion and periodic uncertainties that have been manifested in the voltage produced during the supplying of an unbalanced or nonlinear load (Jensen et al.2000; Rohouma, 2013).

A repeating digital administrative system has been recommended in order to administrate the voltage production of the matric conversion devices which have the qualities of four legs operating with a reference frame shown as ABC. The suggested administrative device framework presents an elevated gain ay during the basic and various frequencies at the integer increments. The application of the recommended structure will decrease the tracking uncertainty between the voltage produced and the voltage which has been referenced.  Furthermore, the repeating administrative voltage device will have the characteristics of providing enhanced stability for the matrix conversion device during the supply of unbalanced and nonlinear loads (Arevaló et al., 2007; Rohouma, 2013).

Computer simulations of the operating conditions of the four leg direct alternating current matrix conversion units have been conducted using MATLAB and SABER. The simulations have demonstrated that the suggested coordination device has the capacity of administrating the voltage production during the receipt of imbalanced and balanced loading conditions.  In addition, the computer simulations have shown that the four leg direct alternating current matrix conversion device has the potential of administrating the production voltage during the receipt of nonlinear power loads. The confirmation of the efficiency of the recommend matrix conversion device has motivated the creation of 7.5 kW experimental models, a 10 KVA paradigm and a 90 KVA prototype (Arevaló et al., 2007; Rohouma, 2013; Zanchetti et al., 2005).

The experimental 7.5 kW model, 10 kVA paradigm and 90 kVA prototype have been applied using a DSP- FPGA framework in a PEMC empirical facility.  The dynamic production and the steady state of the recommended administrative perspective have been reviewed. Furthermore, the experimental trials have shown that the recommended administrative matrix conversion device has the potential of providing an elevated level of tracking precision and rapid transient reaction. These qualities have confirmed the ability of the four leg alternating current matrix conversion device to administrate the voltage produced during the nonlinear and imbalanced loading conditions (Arevaló et al., 2007; Rohouma, 2013).

Conclusion

In this research, the new implementation of the three phase four leg direct alternating current matrix conversion device has been proposed as the stationary terrestrial power supply for aircraft during the maintenance routines.  The suggested framework provides a space saving resource with regards to the terrestrial power supplies for aircraft during maintenance routines. The terrestrial power units which have been simulated under a variety of conditions have demonstrated the capacity of creating a 400 Hz sinusoidal waveform.  The creation of the 400 Hz sinusoidal waveform infers that there is a steady stat e that remains stable during the various operating conditions.  The solitary loop ABC reference frame which applied a repeating coordinator has demonstrated an elevated level of operation without periodic uncertainties or disruptions.

References

Arevaló, S. L., Zanchetta, P, & Wheeler, P. W. (2007). Control of a matrix converter-based power supply for aircraft under unbalanced conditions. The 33^rd Annual Conference of the IEEE Industrial Electronics Society (IECON), November 5^th – 8^th, 2007. Taipei, Taiwan.

Jensen, U. B., Blaabjerg, F., & Pedersen, K. K. (2000). A new control method for 400-Hz ground power units for airplanes. IEEE Transactions on Industry Applications, 36(1):180- 187.

Rohouma, W. M. M. (2013). Design, control and implementation of a four leg matrix converter for ground power supply applications. University of Nottingham.

Zanchetta, P., Clare, J. C. ., Wheeler, P. W. Bland, M., Empringham, L., & Katsis, D. (2005). Control design of a three- phased matrix converter mobile AC power supply using genetic algorithms. Power Electronics Specialists Conference, June 16^th, 2005, Recife, Brazil.