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500kW Power conversion system PCS (Isolated)

The transition to renewable energy makes it harder than ever to provide energy reliably where and when it is required, considering the enormous quantity of energy consumed in today’s modern world and government goals to reduce carbon emissions. As a result, there is a growing need for energy storage devices. The power conversion system (PCS) is a crucial element of any effective energy storage system (ESS). Between the DC batteries and the electrical grid, the PCS serves as an interface.

  • Brand:

    FGi
  • item no.:

    FGPCS-250K/0.4-0.4,F
  • Payment:

    T/T,LC
  • market price:

    $3000
  • product origin:

    China
  • Color:

    RAL7035
  • shipping port:

    QingDao, Shanghai
  • Lead Time:

    30 days
  • Product Detail

What is a Power Conversion System PCS?

With the enormous amount of energy being consumed in today's world and government policies to minimize carbon emissions, the shift to renewable energy makes reliably delivering energy where and when it is needed more challenging than ever. As a result, demand for energy storage systems is also on the rise. A critical component of any successful energy storage system is the power conversion system (PCS)

A Power Conversion System (PCS) is a device for bidirectional conversion of electrical energy connected between the battery system and the grid and/or load. This device should have charge and discharge functions, active and reactive power control functions and off-line switching functions.

The PCS is the intermediary device between the storage element, typically large banks of (DC) batteries, and the (AC) power grid.


How does a PCS work?

To achieve the bidirectional conversion of electric energy, a power conversion system is a component connected between the energy storage battery system and the power grid. The PCS charges the batteries in the event of excessive power generation. The PCS provides the power with the stored energy if the grid need extra energy.

Power Conversion System and Battery Energy Storage System

AC/DC bidirectional converters, control elements, switching components, and cooling compose a power conversion system. There are many layers of remote control for the system. This is designed to regulate the battery’s charge or discharge, as well as the grid’s active and reactive power. In order to obtain information about the state of the battery pack and cells, the PCS can simultaneously connect with the battery management system (BMS) using a number of interfaces and protocols (RS-485, CAN, Fibre-Optics, Ethernet). As a result, the battery can be charged and discharged safely, and the energy storage system can run without interruption.


Single Line Diagram

SLD of Isolated Power Conversion System (PCS)


The Power Conversion System (PCS) is a device that converts electric energy from one form to another for storage or release of the energy in or from the battery. In order to get the energy stored in the Energy Storage System (ESS), which is emerging as a solution to the energy shortage, PCS converts the energy to the form the end user needs.


What is the role of PCS?

The type of electricity stored in the battery through the ESS is direct current (DC) and what is supplied to electronic devices in general is alternating current (AC). As they are used for different purposes, AC needs to be converted to DC to store electricity in the ESS and vice versa for releasing the stored electricity. The PCS enables bidirectional power conversion between AC and DC, serving as both a charger and transmitter.

What is the role of PCS?

Apart from power conversion, PCS controls the quality of electricity including active and reactive power while monitoring the voltage and operating status. Also, in case of a power outage, it can protect the power systems and goes into operation independently using batteries even without a power supply.


Product features:

      • Synergistic witch wind power, photovoltaic, diesel engine and energy storage
      • Fast islanding detection technology
      • Isolated from the grid
      • Reactive compensation and harmonic compensation function
      • With constant power/ constant current charging and discharging function
      • Zero switching can be realized in On/Off Grid Switching (Thyristor needs to be configured)
      • Time division charging and discharging function, which can be configured according to site needs


Technical Specifications 

Model No. FGPCS-250K/0.4-0.4 FGPCS-500K/0.4-0.4
DC parameters
Max DC input voltage 900V
DC input voltage range 600~900V
Max DC input current 566A 1125A
DC input channels 1
AC parameters (On-Grid)
Rated AC power 250kVA 500kVA
Max AC power 275kVA 550kVA
Max AC current 397A 794A
Rated AC voltage 400V
AC voltage range 340~440V
Rated frequency range 50Hz, 45~55Hz
AC THDi <3%(Full load)
Power factor 0.99(Full load)
Reactive power adjustment -1~+1
AC parameters (Off-Grid)
Rated AC voltage 400V
AC voltage range 340~440V
AC THDv <3%(Linear load)
Rated frequency range 50Hz, 45~55Hz
System parameters
Isolation type Transformer isolated
Max efficiency 96% 97.30%
Protection degree IP20
Running temperature -30~+60(>45 derating)
Allowable humidity 0~95%
Altitude 5000m(>2000m derating)
Cooling mode Intelligent forced air cooling
Communication RS485CANEthernet
Dimension(W*H*D) 1070*2150*870mm 1470*2150*1070mm
Weight 1450kg 2050kg


Project Picture

10/11kV Battery Energy Storage System BESS

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