Inverters with multicarrier modulation

Electrotechnology. Electromechanics


Аuthors

Anisimova T. V., Danilina A. N.

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

Abstract

The paper discusses inverter multilevel output voltage forming methods that can be implemented using fully digital techniques. The first method is based on the symmetric regular sampling PWM, with stepped reference signals and modulating triangular waveform. The other method – the asymmetric sampling, offers smaller number of full bridge modules and voltage sources without degrading output voltage quality. Mathematical equations that define PWM switching instants of the multilevel inverter are non-transcendental. Practical implementation of these methods using microcontroller directly is possible. Keywords:cascaded multilevel inverter, symmetric regular sampling, asymmetric sampling, multilevel PWM.

Keywords:

cascaded multilevel inverter, symmetric regular sampling, asymmetric sampling, multilevel PWM.


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