Integrated Power Conversion System (PCS) based on 50kW Module

  • Integrated Power Conversion System (PCS) based on 50kW Module
  • Integrated Power Conversion System (PCS) based on 50kW Module
  • Integrated Power Conversion System (PCS) based on 50kW Module

The bidirectional converter can achieve the electrical conversion between DC and AC. It can convert AC into DC to charge the battery and convert DC into AC to power loads or back feed the grid. The power conversion system features advanced digital control technology that helps to enhance a stable operation of the PCS system. It can switch among grid-connected discharging, grid-connected charging and off-grid operation modes. The power conversion system has a wide range of DC currency input; therefore it can meet the charging and discharging needs of different battery combinations. The PCS system is characterized by modular design in terms of structure and power, which allows flexible battery pack connections for the same power output. All of these designs greatly prolong the service life of batteries.

Configuration
AC/DC Converter Module

Bidirectional AC / DC converter can convert DC into AC and AC into DC. In addition, it can convert AC to DC to charge battery, and convert DC to AC to provide power to loads or back feed grids.

Static Transfer Switch

Automatic static transfer switch could be shifted within 10ms. Under normal operating conditions, the static switch is on. When mains power fails, the static switch would turn off immediately and the battery system thus shifts to off-grid modes to power loads.

Monitoring System

The power conversion system monitors the status of each battery cell and records the historical performance of those cells.

Topology System
Integrated Power Conversion System (PCS) based on 50kW Module
Features
  • Multiple modes: grid-connected, off-grid, or on and off-grid modes are available.
  • Three-level control technology ensures high-quality output of electricity.
  • The power converter system supports communications including RS485, CAN, Ethernet.
  • Functions of low voltage: the micro-grid system composed of battery, energy storage inverter, PV solar panel could provide uninterruptible power supply.
  • 100% unbalanced load capacity in off-grid operation.
  • Continuous 105% rated output power.
  • Many power storage inverters can be connected in paralleled way to increase capacity of battery system.
  • AC or DC input is acceptable to keep the normal operation of battery system.
  • Modular design allows the flexible combination of power conversion system (PCS).
Specification
Model EPCS50 EPCS100 EPCS150 EPCS200 EPCS250
DC parameter Voltage range DC580V～DC900V DC580V～DC900V
DC channel 1 2 3 4 5
Single channel nominal currency 85A
AC gridconnected parameters Output 3W+N+PE/3W+PE
Nominal power 50KW 100KW 150KW 200KW 250KW
Nominal voltage AC 380V/400V
Nominal Current 75A 151A 227A 303A 379A
Voltage range -15%～+10%
Nominal frequency 50Hz/60Hz  
Frequency range ±2Hz
Power factor -0.9~+0.9
Output harmonics ≤3%
Charge- discharge transition time < 100ms
AC off-grid parameters Output 3W+N+PE/3W+PE
Nominal power 50KW 100KW 150KW 200KW 250KW
Nominal voltage AC 380V/400V
Nominal frequency 50Hz/60Hz
Rated current 75A 151A 227A 303A 379A
Voltage accuracy 1%
Frequency accuracy ±0.2Hz
Output voltage harmonics < 3%(Linear Load
Unbalanced load capacity 100%
Overload capacity 105%]: continuous operation; (105% ~ 120%]: 10min; 120%): stop operation
Operating conditions Operating temperature -20℃～ 55℃（>45℃ derating）
Storage temperature -40℃～ 70℃（No batteries）
Optimal humidity 0％ RH ～ 95％ RH，No condensing
Operating altitude < 45℃，2000m；2000m ～ 4000m Derating
Noise ＜75dB
Others Communication CAN/RS485
Isolation isolation tranformer
Water/Dust resistance rating (IP) IP20
Cooling air conditioning
Maximum efficiency 97.50%
Dimension W*D*H 600*1000*2000 1200*1000*2000
Weight 300kg 330kg 500kg 530kg 560kg
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Our Solutions
Why Do We Need Energy Storage System?

Battery energy storage system (BESS) is developed due to insufficient energy or great difference in electricity price. SCU provides complete hybrid solar energy storage system solutions with integrated functions including energy storage, peak shaving, short-duration power expansion, and grid power quality management.