Inverters-the investigation to the optimal topology to the designing of a sinewave inverter range for the use in static as well as mobile applications

Inverters have been on the market since a need arose to produce AC power from a DC source, probably long before the beginning of PV power systems. With the growth in the PV industry, the need for better, more cost-effective inverters is ever present. At the same time, the need for a range of inverters covering a wide range of power and applications are becoming a salient issue. Currently there are various types of inverters on the market, ranging from square wave, modified sinewave, pure sinewave, lightweight high frequency inverters (sine or modified sine), heavy 50 Hz transformer topology inverters, etc. Often the choice of inverter is prescribed by the application, but in all applications the first choice of waveform is always the sinewave. An investigation into an optimum, single frequency, sinewave technology was undertaken with the view of designing a range of said inverters.