GW Instek ASR-2000 Series, User Manual

Page: 24 / 224

ASR-2000 Series User Manual
24
Theory of Operation
The theory of operation chapter describes the basic principles of
operation, protection modes and important considerations that
must be taken into account before use.
Description of ASR-2000 System
System block are composed of the parts described below.

Input EMI Filter
and PFC Circuit
A two stage π filter and a passive PFC circuit that
convert AC power to DC power.

Auxiliary Power
It converts AC power line input to +24Vdc power
for the PWM ICs, fan, among other devices.

Isolation DC to
DC Converter
The isolation DC to DC converter is able to
convert high DC level to lower that not only offers
inverter a stable DC source but separates primary
and secondary side efficiently.

Output Power
Stage (inverter)
Two inverter power stages are in parallel or in
series that provide, in addition to AC and DC
output, sinusoid, square as well as triangle output
waveforms.

Digital
Processor and
Close Loop
Control Circuit
Composition of the C2000 DSP device and the
closed-loop control circuit that execute inverter
action, output measurement and all of the relevant
protection functions.

Communication
Interface and
Data
Transmission
DSP, FPGA and LCD controller that are
collectively responsible for interface
communication, data transmission, LED panel
control as well as remote control.

Keypad and
Display
CPLD that controls keys action and communicates
with DSP for data transmission.