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Matrix-Type Energy Storage Back-to-Back Routing Test System (2×2.5 MW)

The MatrixLink-PST series is a high-efficiency and high-precision energy management solution tailored for the R&D and validation of advanced energy storage systems. At its core, the system integrates multiple high-precision DC energy storage converters, AC/DC bidirectional regenerative converters with loss compensation, and a high-voltage DC bus. This architecture enables the simulation of complex energy flow scenarios and provides reliable, high-performance testing for various types of energy storage equipment.

Overview
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System Functions

✓ Battery pack capacity testing

✓ Battery pack charge/discharge performance testing

✓ Battery pack charge/discharge efficiency analysis

✓ State-of-charge (SOC) retention and recovery capability testing

✓ Battery pack cycle life testing, including multi-channel cycling tests

✓ Temperature characteristic testing of battery packs

✓ DC internal resistance measurement

✓ Pulse charge/discharge response testing

✓ Dynamic working condition simulation testing

✓ Overcharge and over-discharge rate endurance testing

System Topology Diagram

System Advantages (During Testing)

● High efficiency in feeding power back to the grid

● Patent-grade common DC bus topology enabling energy transfer between channels on the DC side

● DSP + IGBT-based power control architecture for fast and precise energy management

● Margin-based real-time power control algorithm ensures stable and reliable operation

● Configurable output voltage, current, and power ranges, compatible with various battery specifications and models

● 25-year hardware design lifespan (full system uses IGBT modules and film capacitors to ensure product quality)

● Adaptive AC grid connection technology, eliminating the need to distinguish power grid phase sequence

● Advanced software-based phase-locked control technology with active rectification and inversion; total harmonic distortion of input current (THDI) ≤ 5%

Equipment Parameters (Single Channel Parameters)

Key Technical Parameters

No.	Item	Reference Range / Accuracy Requirement	Remarks
1	Equipment Model	PST5000-2CH	2×2.5MW, supports sequential 2.5MW bidirectional testing
2	Number of DC Channels	2	Channels per cabinet (customizable)
3	Rated Power per Channel	2500kW	Supports full power output
4	Grid Connection Power	1250kW	For power loss compensation/surplus feedback
5	Output Voltage Range	80~1520V	Charging 0V~1520V
6	Voltage Accuracy	±(0.05%FS + 0.05%RD)	Higher precision available by customization
7	Current Range	±2400A	±2400A per channel
8	Current Accuracy	±(0.05%FS + 0.05%RD)	Higher precision available by customization
9	Energy Feedback Mode	Tiered AC/DC energy recycling	Prioritize DC-side inter-channel energy recycling; excess energy exchanged with grid
10	System Efficiency	≥97.5%	Circulation efficiency

Device Input Parameters

No.	Item	Reference Range / Accuracy Requirement	Remarks
11	Operating Voltage	AC380V ±15%	Three-phase five-wire (ground resistance ≤ 5Ω)
12	Operating Frequency	50Hz ±2Hz
13	Power Factor	≥99%	At half load and above
14	Current Harmonics (THD)	≤5%	At half load and above
15	Input Protection	Undervoltage Protection
16		Overvoltage Protection
17		Overcurrent / Overload Protection	Includes breaker overcurrent protection
18		Phase Loss Protection
19		Abnormal Frequency Protection
20		Transformer Overtemperature Prot.
21		Lightning Protection	Includes lightning protection components
22		Anti-islanding Protection

Device Output Parameters

No.	Item	Reference Range / Accuracy Requirement	Remarks
23	Parallel Mode	Supports continuous channel parallel
24-1	Continuous Sampling Interval	≤10ms	Includes current and voltage sampling
24-2	Current Rise Time	≤50ms	10%~90% of the current range
24-3	Current Transition Time	≤100ms	-90%~90% of the current range
25	Voltage Resolution	0.1mV
26	Current Resolution	0.1mA
27	Power Resolution	0.1W
28	Output Protection	Undervoltage Protection	Supported
29		Overvoltage Protection	Supported
30		Short Circuit Protection	Supported
31		Overtemperature Protection	Supported
32		Reverse Polarity Protection	Supported
33		Overcurrent Protection	Supported
34		Channel Communication Error Protection	Output auto shutdown upon comm. failure
35		Power-off Protection	Contactor automatically disconnects
36		Emergency Stop Protection	Includes emergency stop button