HEXING’s MV Power Conversion Unit helps project teams adapt to various needs. It manages various storage sizes, DC voltages, MV networks, site conditions, and operating strategies. This is all possible thanks to its flexible power conversion platform.
Each energy storage project is different. Battery voltage, plant capacity, and point of interconnection can change from site to site. Grid voltage, available space, environmental conditions, and operating strategy can also differ.
For developers and EPC contractors on multiple projects, these differences can lead to repeated engineering tasks. A solution for one site may need changes for another. It might require new transformer ratios. Switchgear setups, cooling designs, sizes, or communication links could also change.
The Challenge: Repeated Redesign Increases Time and Coordination
Starting the battery-to-grid interface from scratch for each project adds more work. It also creates more chances for late changes. When selecting the PCS, transformer, switchgear, and communication systems separately, a change in one can impact multiple equipment packages.
The challenge is to keep flexibility for the final site. We want to avoid starting a new integration process for each power rating, grid voltage, or operating mode
How HEXING’s MV Power Conversion Unit Solves It: A Configurable Core Platform
HEXING’s MV Power Conversion Unit gives a clear starting point. It can adapt to different project needs easily. You can choose from system power ratings of 1.25 MW, 2.5 MW, and 5 MW. There are also medium-voltage options ranging from 12 kV to 40.5 kV. The DC operating range is between 1000 V and 1500 V.
The final transformer ratios and switchgear setups are confirmed. So are the system sizes, communication layout, and cooling methods. These choices meet project needs and the final technical solution. Customers start with a shared system concept. They also keep the flexibility needed for the site and interconnection point.
| 3 SYSTEM POWER OPTIONS | 12–40.5 kV MV RANGE | 50 / 60 Hz GRID FREQUENCY |
Benefits:
| • Less repeated engineering when project power or grid voltage changes. • A more consistent equipment selection process across different sites. • Lower risk of late mismatches between PCS, transformer, switchgear, and grid requirements. • A clearer basis for technical discussions with utilities, EPC teams, and plant designers. |
A configurable platform can standardize the main battery-to-grid architecture across a project portfolio while adapting the details that genuinely need to change. This does not remove project engineering, but it can make the engineering scope easier to define and manage.
Support Grid-Connected and Off-Grid Requirements
The bidirectional PCS allows the battery to charge. It can also discharge to the AC system. In grid-connected operation, it works with plant-level control or energy management systems. This manages battery power flow. The setup depends on the final project design.
What Projects Is This Approach Suitable For?
This approach is key for developers with many storage sites. It also helps EPC contractors working in various markets. Additionally, system integrators can use it to meet different battery and grid needs.
Typical applications include utility-scale BESS, standalone energy storage plants, renewable energy and storage projects, user-side storage, and microgrids. Final power, voltage, environmental, cooling, and communication requirements should be confirmed during project design.
Questions to Confirm Before Selecting a Configuration
| PROJECT DISCUSSION CHECKLIST • Battery voltage range and required system power. • Point of interconnection voltage and local grid frequency. • Grid-connected, off-grid, or mixed operating requirements. • Site space, cooling, environment, and communication architecture. |
| Planning storage projects with different power or grid requirements? Talk to HEXING about building a configurable battery-to-grid platform for your project or project portfolio. |
