A simple and novel modulation technique used to produce two-phase symmetric output from two-phase asymmetric input

In this paper a new modulation technique that can be adopted to obtain various possible output voltages depending on the switching topology and the voltage inputs available is presented. Then this technique is used to obtain a symmetric two-phase sinusoidal voltage with π/2 phase difference from an asymmetric two-phase sinusoidal input. A symmetric two-phase voltage source can be useful in many cases such as driving a two-phase induction motor. Basically two methods are presented here. In the first method the phase difference between the input and output voltages in not controlled whereas in the second method the phase difference is controlled to reach maximum possible amplitude in the output. First the general idea behind this technique is explained and its equations and constraint are derived. Next the technique is used to produce the desired voltage that was mentioned and the proper switching topology is explained. Then the method and its equations and constraints are fully discussed over this particular case. Finally the simulation results are presented and analyzed.

[1]  P.W. Wheeler,et al.  A 150-kVA vector-controlled matrix converter induction motor drive , 2005, IEEE Transactions on Industry Applications.

[2]  José R. Rodríguez,et al.  Matrix converters: a technology review , 2002, IEEE Trans. Ind. Electron..

[3]  D.G. Holmes,et al.  A new modulation algorithm for voltage and current source inverters, based on AC-AC matrix converter theory , 1990, Conference Record of the 1990 IEEE Industry Applications Society Annual Meeting.

[4]  Ramazan Akkaya,et al.  Control of Venturini Method Based Matrix Converter in Input Voltage Variations , 2009 .

[5]  T. Lipo,et al.  AC/AC power conversion based on matrix converter topology with unidirectional switches , 2000 .

[6]  Emil Dinkov,et al.  AC-AC POWER CONVERTERS - OVERVIEW AND APPLICATION , 2007 .

[7]  L.M.C. Mhango,et al.  Novel two-phase inverter-fed induction-motor drive , 1984 .

[8]  A. Alesina,et al.  Analysis and design of optimum-amplitude nine-switch direct AC-AC converters , 1989 .

[9]  Donald Grahame Holmes,et al.  Variable speed control of single and two phase induction motors using a three phase voltage source inverter , 1993, Conference Record of the 1993 IEEE Industry Applications Conference Twenty-Eighth IAS Annual Meeting.

[10]  P.W. Wheeler,et al.  A vector controlled MCT matrix converter induction motor drive with minimized commutation times and enhanced waveform quality , 2002, Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344).

[11]  F. Blaabjerg,et al.  Matrix converter controlled with the direct transfer function approach: analysis, modelling and simulation , 2005 .