Fish method based on-line optimal control for PWM rectifiers

A control strategy for hard switching high power PWM rectifiers, based on carrierless volt-second (flux) control is presented. Insights from the fish method yield switching rules in the synchronous frame such that, even during major setpoint changes, none of the switches ever violates a pre-determined minimum pulse width. The control method realizes outstanding transient behaviour at low switching frequencies and allows a small DC-link capacitance, low inductance loads as well as nonequal dwell-times. Experimental data of a small DSP-controlled 1 kW IGBT PWM rectifier is presented.<<ETX>>

[1]  A. Veltman,et al.  On-line optimal switching patterns for 2-level and 3-level inverters using the fish method , 1993, Proceedings of IEEE Power Electronics Specialist Conference - PESC '93.

[2]  J. Ollila.  A PEW-rectifier without current measurement , 1994 .

[3]  A. Veltman.  The fish method: Interaction between AC-machines and switching power converters , 1994 .

[4]  Joachim Holtz,et al.  Pulsewidth modulation-a survey , 1992, PESC '92 Record. 23rd Annual IEEE Power Electronics Specialists Conference.

[5]  P.P.J. van den Bosch,et al.  The fish method: an analytical tool for optimizing converter-machine performance , 1993, Conference Record of the Power Conversion Conference - Yokohama 1993.