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Delta Electronics. Inc.
Chapter 3: Specification
3.1. System Block Diagram
Three-phase
EMI Filter
Power Input
Auxiliary
Power
Adaptable Fan
Figure 3.1 System block diagram of Delta "HPH-20KA01KAT"
Soft Start and PFC Section
Converter Section
Output Section
Output
Measurement
Feedback
Auxiliary Power
MCU.FPGA
Control Panel Display
Remote Control Interface
Soft Start
PFC DC Bus
Mechanism
System Controller
Table 3.1 Detail description for block diagram
AC line voltage is applied through the circuit breaker. The contactor,
when closed, delivers the line voltage to a rectifier bridge, where it is
converted to DC bus.
The converter section converts DC voltage stored in the bulk
capacitors to high-frequency voltage by alternating the current
through switching power components.
In the output section, an isolation transformer steps up the high-
frequency voltage from the converter section and delivers it to a full-
wave rectifier bridge. The rectified DC power is then passed through
a measurement section to the output connector.
The output measurement section measures current and voltage, and
and
feedback the voltage and current information to MCU for voltage,
current and power control and related protection.
The AUX power provides low voltage source to supply the Vcc of
analog OPA, main controller, MCU, fan and LCD display.
The MCU is responsible for controlling the power supply status and
providing status information to the operator through all interfaces.
The FPGA dominates the arc suppression mechanism.
Control panel shows operating mode, command level, feedback
values, set up Arc processing, process control, interface setup,
communication set and system status during power supply working.
The power supply supports three types of interfaces: a User port
(analog), a Host port (RS-232, RS-485) and an active front panel. All
three interfaces communicate operator-supplied inputs to MCU and
provide the operator with status information.
DC-DC
Converter
Sensor & Driver
HPH- 20KA01KAT
Wide Range
Arc Suppressor
Power Output
Isolation
Interface
4
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