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Digital
Phase Converters
Proprietary software with a powerful microprocessor
runs our Phase Perfect digital phase converter through the
control of solid state power switching components. The
digital signal processor (DSP) continually adjusts the
converter’s input and output modules during the phase
conversion process.
As a result, balanced 3 phase power is always maintained.
The third voltage is generated by the process of double-IGBT
conversion. Double
conversion is the conversion of AC power to DC and
back to AC.
Insulated gate bipolar transistors (IGBT) switch the power in this
process.
The input module (rectifier), consists of IGBTs in
series with an inductor, operating at a switching frequency
of 10,000 Hz.
Controlled by
software in the digital signal processor to draw current from the single-phase
line in a sinusoidal fashion, the input module charges
capacitors on a constant voltage DC bus. With an incoming sinusoidal current, there
are no significant harmonics generated
back onto the line. The electronic
power factor correction on the input module increases the
efficiency of digital phase converters, and makes for a
utility-friendly converter.
The output module (inverter) is made up of IGBTs
drawing on the power of the DC bus
to create an AC voltage. This resulting voltage is not
sinusoidal, but rather a pulse-width-modulated (PWM) waveform
very high in harmonic content. An inductor/capacitor
filter system receives this PWM voltage and produces a
sine-wave voltage with less than 3% total harmonic
distortion (standards for computer grade power allow up to
5% THD). The
digital signal processor's software continually monitors and
adjusts this generated voltage to produce a
balanced 3 phase output at all times.
In the event of utility over-voltage, under-voltage, or a
fault, the
digital signal processor
will shut the converter down. A Phase
Perfect digital phase converter can safely operate virtually
any type of 3 phase equipment or any number
of multiple loads.
FOR TECHNICAL ASSISTANCE CALL
605-343-7934
(8am-5pm MST).
Our knowledgeable staff of
engineers and technicians are available to answer
your questions.
EMAIL: INFO@PHASEPERFECT.COM
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PHASE CONVERTERS
Digital
Phase Converter - A10 Data
Sheet
Digital Phase Converter - 20 Data
Sheet
Digital Phase Converter - 30 Data
Sheet
Phase Perfect digital phase converters
are UL listed in the USA and Canada. |
