Inverters

Role of Inverter – The role of an inverter is to convert the direct current produced by the battery into alternating current required by all your house hold devices.  An inverter in a grid connected renewable energy system converts direct current (DC) electricity from solar panels or a wind turbine into alternating current (AC) mains power.

Efficiency – Inverters also have a range of efficiencies, with poor designs being no more than 50-60% efficient, while good designs can reach 85-95% efficiency.  Low efficiency means that a very large proportion of the battery’s energy is wasted by the inverter

Type of Inverters

3 major type of inverters available in majority of markets i.e

  1. Sine Wave (some time known as pure sine wave or true sine wave) – This is generated by rotating AC machinery and sine waves are a natural product of rotating AC machinery. The major advantage of a sine wave inverter is that all of the equipment which is sold on the market is designed for a sine wave. Sine wave inverters are more expensive – about 2 to 3 times.
  2. Modified Sine Wave (modified square wave) –  Has a waveform more like a square wave (As shown in below picture).  A modified sine wave inverter will work fine with most equipment, although the efficiency or power will be reduced with some. in many cases appliances that use electronic temperature controls will not control.
  3. Square Wave – Very few but the cheapest inverters are square wave. A square wave inverter will run simple things like tools with universal motors.

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