AC25/30QTP-1 and -3 Operations Manual.... 10
3 INTRODUCTION TO THE AC25QTP AND AC30QTP
Each model is a high performance Yacht Power Converter utilizing dual-conversion technology.
The systems will accept any single or three phase input service with a frequency between 40-70
Hertz, and a voltage between 170-520VAC. Input service may consist of one single phase or one
three phase shore voltage; the converter will auto-configure for the applied power form.
The output power form has been programmed at the factory for the power form (single or three
phase), voltage and frequency, required by your yacht.
Dual-conversion technology is the preferred technique for AC power conversion, and was
chosen for these systems. In this technology, the shore power service is isolated by transformers
then converted to DC power by the Power Factor Correction (PFC) power supplies. The output
inverters then convert the DC power back to the required AC form (both voltage and frequency)
required by the yacht.
Figure 1: BLOCK DIAGRAM
FORM CONTROL
NOISEDC/AC
POWER
DC LINK
SHIP'S
POWER MODULE #3
CIRCUITS
AC/DC
POWER
SUPPLY
(PFC)
SUPPLY
(PFC)
DC/AC
INVERTER
DC LINK
FILTERS
NOISE
INVERTER FILTERS
POWER
POWER MODULE #2
POWER MODULE #1
INPUT POWER
15A FUSES
DISCONNECT
SWITCH
(PFC)
SUPPLY
AC/DC
ISOLATION
TRANSFORMERS
POWER
AC/DC
FILTERSINVERTER
DC/AC
DC LINK
NOISE
KEYPAD
METER AND CONTROL
LOW VOLTAGE
POWER
CONTROL
POWER SUPPLIES
INPUT
CIRCUITS
AND DISPLAY
CONTROL
DISPLAY
4x40 LCD
OUTPUT
CONTROL
POWER
GENERATOR
GENERATOR
GENERATOR
SERIAL INTERFACE
ONLY
TRANSFER
SEAMLESS
EQUIPMENT
GROUND
SHORE
GROUND
SHORE
POWER
CONTACTOR CONTROL
CONTACTOR CONFIRM
VOLTAGE SENSE
RS-232C/RS-485
POWER MODULE ASSEMBLYTRANSFORMER / CONTROL MODULE
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