A dynamic linearizing modulator based boost inverter

Differential Boost Inverter (DBI) can generate an amplified bipolar output voltage from a DC-input in a single power stage. However, traditional contol techinque limits a DBI´s power bandwidth. Dynamic linearizing modulation (DLM) was used to lineazie an uni-polar boost converter to improve its power bandwidth. In this paper, DLM principle is applied to DBI topology to construct a variable amplitude, and frequency source. Implementation aspects, analysis, and operational challenges of this realization are presented. An experimental prototype was used to realize a variable amplitude and frequency source based on the proposed concept. An output of 62.4 V (peak-to-peak), 100 Hz sine wave was generated from a 20 V DC-input. The technique is also extended to generate a 200 Hz, and 500 Hz sine wave outputs.