Products
-> Single
Phase Transformers -> Inverter Transformers
 Carroll
and Meynell can produce transformers to meet customers
specified values of input and output voltage, transformer
rating and leakage inductance to operate with inverters
on emergency back-up power systems
An inverter is an electrical device that operates from
a DC supply source, e.g. a back-up battery, incorporating
semi-conductor switching devices to produce a square
wave, or ‘chopped’, output. An inverter
transformer is a transformer with a built in inductance
of a specific value that when coupled with a capacitor
will produce an AC sinusoidal output from the chopped
DC of the inverter.
Single phase inverter transformers are usually constructed
on ‘UI’ style lamination cores where the
core has been designed to have a gap at the top and
bottom between the upright and horizontal legs.
The secondary of the transformer is wound onto the core
and then a gapped auxiliary core is placed at one end
of the winding. The primary coil is then wound over
the secondary winding and the auxiliary core. The auxiliary
core provides an element of magnetic separation between
the primary and secondary windings to create a large
leakage inductance. The value of this inductance is
controlled by the gap in the auxiliary core and is set
to operate in conjunction with the circuit capacitors
to produce the sinusoidal output waveform required.
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