| Summary: | Reducing the number of switches andpassive elements in uninterruptible power supplytopologies not only reduces the cost of the wholesystem but also provides some other advantagessuch as greater compactness, smaller weight, andhigher reliability. Generally, the largest costreduction is achieved by reducing the number ofswitches employed in a converter power circuit.Another way of reducing the cost of converters is touse a topology that allows replacing activeswitches, such as IGBTs, MOSFETs, andthyristors, with diodes. Diodes are less expensivethan active switches and apart from this, there isalso a cost reduction from eliminating all thecircuitry for driving active switches.
|
|---|