Displacement Angle Controll of Matrix Converter

* li Yaskawa Electric Corporation, Yahatanishi-ku, Kitakyushu 806, Japan E-mail: xxr@yaskawa.co.jp Abstract-We proposed and discussed a control method of matrix converter in previous papers (6)(8)(9) in which instantaneous input voltages are used. The method can generate output voltages o f 0.866 times supply voltage. Control input current and output voltage o f sinusoidal waveform can be obtained and can compensate the effect of fluctuation, asymmetry or harmonics in both the output voltage and the input current. In this method, combination of off-line and on-line computation was used. Therefore, it needs minimal on-line calculation and is easily realized. In this paper, this method is improved to enable input power factor controllable in order to realize real unity input power factor. And we discussed on switching sequence during one carrier period by which the input current waveforms can be greatly improved wiithout increasing switching I osses .

[1]  Takeshi Furuhashi,et al.  A novel control method for forced commutated cycloconverters using instantaneous values of input line-to-line voltages , 1991 .

[2]  D. Borojevic,et al.  Space vector modulated three-phase to three-phase matrix converter with input power factor correction , 1995 .

[3]  B. Noble,et al.  On certain integrals of Lipschitz-Hankel type involving products of bessel functions , 1955, Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences.

[4]  Eiji Yamada,et al.  Effect of PWM pulse number on matrix converter characteristics , 1996, PESC Record. 27th Annual IEEE Power Electronics Specialists Conference.

[5]  Thomas A. Lipo,et al.  New control strategy for matrix converter , 1989, 20th Annual IEEE Power Electronics Specialists Conference.

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