Technical Manual

2
GENERAL DESCRIPTION
Introduction
The system described in this manual consists of four main parts:
A: The Main High Voltage Power Supply
B. The Modulator System
C. The Corner Cutter
D. Filament Power Supply
In order to achieve the design objectives of this contract, our design approach has to
follow state-of-the-art technology in solid-state design. The evolution of third
generation IGBT technology and the various power supply topologies makes it a
challenge to make the right choice for our present application.
The design objective calls for generating narrow pulses of various pulse-widths
under single pulsing conditions. The cathode pulses will drive a CPI Magnetron
operating in the C-Band frequency with minimum peak output power 1.0 Mw.
The power supply section is self-contained in an enclosure as shown in Figure 1.0.
Our design is based on series resonance topology driving a full bridge circuit.
The modulator is a hard-tube type, utilizing IGBT technology, and is under oil
environment. The mechanical enclosure for the modulator is shown on Figure 2.0
System Specifications
The specifications for the systems are outlined in the Appendix along with the
magnetron specifications.
General Technical Discussion
As previously mentioned, the whole system consists of the high-voltage power
supply and the solid-state hard tube modulator.
The solid-state power supply contains the following sections:
A. Off-Line Rectifiers, Filters, and Controls
B. Series Resonance Full Bridge Inverter
C. Series Resonance Frequency Modulation Control
D. High Voltage Output Section
E. Low Voltage Power Supplies