Stucke Elektronik SYMAP®BAT battery applications (hybrid energy sources)
SYMAP® BAT is a cutting-edge digital controller from Stucke Elektronik, specifically engineered for the management of Battery Energy Storage Systems (BESS) and their integration into hybrid power networks.
1 As global industries move toward decarbonization, this device serves as the critical “brain” for battery-based power sources.
1. Product Description
SYMAP® BAT is a multifunctional control and protection relay designed for modern hybrid energy systems.
2 It manages the interface between the battery (via power converters/inverters) and the main power grid or shipboard busbar.
Its primary role is to ensure the safe charging and discharging of batteries, maintain the “State of Charge” (SoC), and coordinate with other energy sources (like diesel generators or fuel cells) to optimize fuel efficiency and power stability.
It bridges the gap between the Battery Management System (BMS) and the overall Power Management System (PMS).
2. Technical Parameter Table
| Category | Specification |
| Power Supply | 24V DC (Wide range 18V – 36V) |
| DC Monitoring | Voltage (up to 1500V DC via transducers), Charging/Discharging Current |
| AC Monitoring | 3-phase Voltage, Current, Frequency, and Power at the Inverter output |
| Energy Management | SoC (State of Charge) & SoH (State of Health) monitoring via BMS interface |
| Protection (DC Side) | Overcurrent, Short Circuit, Reverse Current, Ground Fault (IT-systems) |
| Protection (AC Side) | Under/Over Voltage, Under/Over Frequency, ROCOF (Rate of Change of Frequency) |
| Communication | Dual Ethernet (IEC 61850), Modbus TCP/RTU, CANopen (for BMS communication) |
| Operational Logic | Built-in PLC for Black-start, Peak Shaving, and Load Sharing logic |
logic
3. Related Models
The BAT series is part of the “Hybrid” portfolio of SYMAP®:
SYMAP® BAT-Standard: General battery management for backup UPS systems.
SYMAP® BAT-Marine: Type-approved for hybrid vessels, including specific “Spinning Reserve” logic.
SYMAP® BAT-Compact: A space-saving version for containerized BESS solutions.
SYMAP® DC: Often used in conjunction with BAT for dedicated DC-bus protection.
4. Application Cases
Hybrid Marine Vessels: Managing batteries to allow diesel engines to run at optimal loads, or enabling “Zero Emission” mode in ports.
Peak Shaving in Industry: Discharging batteries during periods of high demand to reduce electricity costs and grid strain.3
Black-Start Capability: Using stored battery energy to restart a dead power plant or shipboard grid without external power.
Offshore Platforms: Providing high-speed “Spinning Reserve” to replace a failing generator instantly, preventing a total blackout.
5. Product Advantages and Features
Seamless Hybrid Integration: Automatically balances the load between traditional generators and batteries to maximize fuel savings.
Advanced Safety: Monitors the DC link and AC output simultaneously, providing a “dual-layer” protection zone.
BMS Gateway: Acts as a robust interface between various battery manufacturer protocols (BMS) and the high-level ship/factory automation.
Dynamic Response: Capable of ultra-fast load intake (milliseconds), which is essential for stabilizing grids with high renewable penetration.
Fail-Safe Reliability: Features the Stucke 3-CPU architecture, ensuring that protection logic is never interrupted by communication or display tasks.
6. Other Models in the Same Series
The SYMAP® ecosystem provides a total solution for hybrid switchboards:
SYMAP® ECG: For the diesel or gas engines in the hybrid mix.
SYMAP® BC: Bus-tie Control to manage the connection between battery segments and the main bus.
SYMAP® LD: Line Differential protection for the cables connecting battery containers to the switchroom.4
SYMAP® G: Specialized protection for the main alternators.