4 brief description, Brief description, 2 introduction – JUMO 709050 IPC IGBT Power Converter IPC 70/100A Operating Manual User Manual

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2 Introduction

2.4 Brief description

Instrument

The

J IPC is a IGBT power converter for controlling heater loads that

previously required a transformer (either a variable transformer or a
combination of transformer and thyristor power unit).
Its function is that of an electronic transformer with a pulsed DC output.

Advantages

It combines the advantages of a conventional variable transformer, such as
amplitude control which is the sinusoidal current loading, with the advantages
of a thyristor power switch, such as current limiting, load monitoring,
subordinate control action, etc.

Application

This power converter is employed wherever large resistive loads need to be
switched and no electrical isolation is required between the supply voltage
and the load voltage. Thanks to the amplitude control (the current drawn from
the supply is always sinusoidal), synchronous clock controls (as for burst-firing
operation) and power-factor compensation networks (for the reactive power
resulting from phase-control) are no longer required.

There is no electrical isolation between the voltage supply and the
load voltage.