Principle Of Operation - Pooxtra Pure Sine Wave Serie Manual De Usuario

DESIGN FEATURES
The continuous power ratings of the models are as follows:
•
PXA500PSW
•
PXA1000PSW/1000MSW
•
PXA1500PSW
•
PXA2000PSW/2000MSW
•
PXA3000PSW/3000MSW

PRINCIPLE OF OPERATION

The inverter converts power in two stages. The first stage is a DC to DC conversion
process that raises the low voltage DC at the inverter input to high voltage DC of
approximately 150VDC. The second stage is the actual inverter stage that converts
the high voltage DC into nominal 120 VAC, 60 Hz AC (RMS). The DC-to-DC
converter stage uses modern high frequency power conversion techniques that
have replaced the bulky transformers found in less technologically-advanced models.
The inverter stage uses advanced IGBT transistors in a full bridge configuration.
THE OUTPUT WAVEFORM
The AC output waveform of the PSW-series inverter is known as "Pure Sine Wave"
or "True Sine Wave". It is a waveform that has characteristics same to the sine
wave shape of utility power (See Fig. 1).
The AC output waveform of the MSW-series inverter is known as "Modified Sine
Wave" . It is a waveform that has characteristics as below. (See Fig. 2).
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Fig.1. Pure Sine Wave Waveform
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— 500 Watts
— 1000 Watts
— 1500 Watts
— 2000 Watts
— 3000 Watts
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Fig.2. Modified Sine Wave Waveform
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