Input; Housekeeping Supply; Inverter; Output - Advanced Energy Pinnacle User Manual

Pinnacle™ 20 kW
AC In

Input

Section
Housekeeping
Section
Figure 2-1. Pinnacle functional block diagram
INPUT
In the input section, AC line voltage is applied through the circuit breaker to a three-
phase contactor. The contactor, when closed, delivers the line voltage to a rectifier
bridge, where it is converted to DC. The DC voltage is applied to bus capacitors
through soft-start circuitry. This bus provides DC voltage to the inverter section. The
input section also provides power to the housekeeping section.

HOUSEKEEPING SUPPLY

The housekeeping supply section provides low voltage to power the electronic circuits
within the Pinnacle unit.

INVERTER

The inverter section converts DC to high-frequency voltage by alternating the current
through switching transistors.

OUTPUT

In the output section, an isolation transformer steps up the high-frequency voltage
from the inverter section and sends it to a full-wave rectifier bridge.
The rectified DC power is then passed through a measurement section to the output
connector.

OUTPUT MEASUREMENT

The output measurement section measures current, voltage, and power. These signals
are typically scaled 0 to 10 VDC and sent to logic control and interfaces.
5702156-E
Inverter
DC
Section
Unit A
Control Panel
Display
Theory of Operation
Output
Output
Section Measurement
Logic
Remote
Interfaces
Control
DC Out
Unit A
2-3