Advanced Energy Paramount MF 2 kW, Руководство пользователя

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signal. The Paramount MF 2 kW generator can also control the voltage at the load
with proper voltage feedback and setting the unit to voltage control mode.
Isolation
Transformer Filter
Directional Coupler/
Detector
Mid-frequency
Out
AC
In
Rectifier
Module
Inverter
Module
Controls
3726
Figure 2‑1. Paramount MF 2 kW generator block diagram
Rectifier Module
The full-wave bridge rectifier converts the AC input voltage into a steady DC signal.
This power is provided directly into the inverter module.
Inverter Module
The inverter module is composed of a set of MOSFETs which are either fully on or
fully off. When the FETs are on, very little voltage drop occurs across them. When
they are off, virtually no current flows through them. Since the power dissipated in a
FET is the product of the voltage across and the current through the device, neither
case represents a large power loss. This makes the generator very efficient.
Isolation Transformer
The inverter module produces a waveform with substantial energy at the fundamental
switching frequency, which is set to the desired output frequency. This waveform
goes to the isolation transformer.
The isolation transformer isolates RF output of the generator from the inverter
module which is directly connected to the AC power line. The transformer also
transforms the impedance to bring the output impedance of the generator to a
standard 50 Ω level.
Filter
The filter is a combination of inductors and capacitors especially designed to pass
only the frequency of interest and reject high frequency harmonics (a lowpass filter).
The output of the filter is nearly a perfect sine wave. This wave is then delivered to
the directional coupler/detector.
Advanced Energy
®
Paramount
®
MF 2 kW Generator
57020114-00E Product Overview 2‑2