User guide

2-3-2 Introduction to inverter module
(1) Uses IGBT as power component.
(2) Uses high technology DSP to control the inverter module.
(3) Utilize digital control management to prevent discrete component from aging, temperature slant
and reduce the quantity of parts to enhance system reliability.
(4) Integrated A/D signal processing, 12bit resolution and high speed transferring capability.
(5) Reserve communication port for parallel UPS operation, detection of secondary power, ATS
control signal, SPWM testing port.
(6) Highly integrated system, compact and highly reliable.
(7) It is works in coordination with the rectifier, AS-400 interface board, IGBT driver, static switch,
LCD panel, PT board, CT board to convert the utility voltage into clean power.
Fig. 2-3-2 (Inverter module)
2-3-3 Static switch
(1) Uses SCR components as switching circuit between INV and BYPASS. These are controlled
using high frequency electrical technique.
(2) Use high frequency technique to isolate the trigger circuit to prevent false triggering of the
SCR.
(3) DSP control keeps it energized and provides switching signal to connect either bypass or
inverter output to the load.
(4) Assembly model diagram is shown in fig. 2-3-1.
(5) Notice: static switch module and inverter module are mounted in the same heat sink.