30kW Bidirectional Storage Inverter
The 30kW Bidirectional Storage Inverter serves as the power conversion core of modular battery energy storage systems, managing energy exchange between batteries, AC loads, and the grid.
Built for commercial energy storage, backup power, and distributed energy projects, this compact energy storage inverter gives system integrators a flexible foundation for BESS design. It supports varied operating requirements and project layouts, while leaving room for future expansion as power and energy needs evolve.
Key Features
Core features for flexible BESS integration and expansion.
Bidirectional Energy Conversion
Enables controlled charging and discharging between the battery system and AC side, supporting flexible power flow for commercial energy storage, backup power, and microgrid operation.
Wide Battery Compatibility
The 150–750V battery range supports flexible system matching, while compatibility with lithium, lead-acid, sodium-ion, and flywheel storage broadens project configuration options.
Compact Rack-Mounted Integration
The 19-inch rack-compatible design simplifies installation inside BESS cabinets, helping system integrators reduce space requirements and streamline equipment layout.
Scalable Parallel Expansion
Parallel operation on both the AC and DC sides supports modular capacity growth. Up to 10 units can operate in parallel for larger off-grid power requirements.
Flexible Solar and Backup Options
An optional PV charger supports DC-coupled solar-plus-storage systems, while an optional smart transfer switch enables automatic backup operation when required.
Efficient and Connected Operation
With peak efficiency up to 97.3% and CAN, RS485, Ethernet, and WiFi communication, the bidirectional inverter supports efficient operation and flexible system communication.
Specification
| Battery Side | |
| Charging and Discharging voltage range | 150V-750V (350V-750V @full load) |
| Rated Power | 30kW |
| Maximum Power | 33kW |
| Maximum Charging and Discharging Current | 90A |
| Battery Switch-off Mode | Relay |
| Over Voltage Protection | Software Protection |
| Over Current Protection | Software Protection & DC Fuse |
| DC Bus Side | |
| Rated Power | 45kW |
| Input Voltage Range | 700V-830V |
| Maximum Input Current | 32.5A*2 |
| AC Output | |
| Rated Output Power | Grid-tied/Off-grid: 30kW |
| Maximum Apparent Power | Grid-tied/Off-grid: 33kVA |
| Maximum Active Power | Grid-tied/Off-grid: 33kW |
| Rated Grid Voltage | Grid-tied: 3P3W+PE, 480 (±15%) Vac Off-grid: 3P3W+PE, 480 (±5% configurable) Vac |
| Rated frequency | Grid-tied: 60 (±2.5) Hz Off-grid: 60 (±5 configurable) Hz |
| Power Factor |
Grid-tied/Off-grid: Listed: 0.8~1 leading or lagging Actual:0.1~1 leading or lagging |
| THDi | <3% |
| Overload Capacity |
110%~120%, 10 min 120%~130%, 1 min 130%~150%, 200ms >150%, 100ms |
| Off-grid & Parallel | |
| External transformer | Droop control parallel/Communication parallel: Yes |
| Maximum number of parallel | Droop control parallel/Communication parallel: 10 |
| Total length of parallel lines |
Droop control parallel: No limit Communication parallel: 7m |
| General Specification | |
| Peak Efficiency | 97.3% |
| CEC Measured Efficiency | 95.5% |
| Communication Port | CAN/RS485/Ethernet/WIFI |
| Dimension (WHD) |
440x173x550mm 440x173x596mm (including handles) |
| Cooling | Forced Air Cooling |
| Weight | 33kg |
| Topology | Non-isolation |
| Operation Altitude | 3000m (>3000m derating) |
| Operation Environment Contamination Level | ≤2 |
| Temperature & Humidity | -30℃~60℃ (>45℃ derating) & 0-95% |
| Noise | ≤75dB |
| IP Rating | IP20 |
| Grid-tied Standard | IEEE1547;UL1741SA;RULE 21 |
| Safety Certification | UL1741; UL9540A |
| EMC Standard | FCC |
30kW Battery Power Conversion System for Modular BESS
In battery energy storage projects, a bidirectional storage inverter may also be described as a bidirectional battery inverter, energy storage PCS, BESS inverter, or Power Conversion System (PCS). Its role is to control two-way AC/DC power conversion between the battery system and the AC electrical network.
This specific 30kW PCS is defined by a 150–750V battery operating window, 30kW rated charging/discharging power, a 480Vac three-phase AC interface, grid-tied and off-grid operating specifications, and modular parallel capability. Those electrical boundaries are more useful for product selection than broad application labels because they determine whether the inverter can fit the battery voltage, AC bus, cabinet layout, and control architecture of a particular BESS.
Bidirectional Power Flow
The inverter operates in both charging and discharging directions.
On the battery side it manages DC power within the specified voltage/current envelope;
on the AC side it interfaces with a 3P3W+PE, 480Vac system.
Charging Direction
AC power is converted to DC for battery charging. Charge power and current must remain within the battery system limits and the inverter's 30kW / 90A operating envelope.
Discharging Direction
Stored DC energy is converted to three-phase AC. The inverter executes the active-power command within its output, voltage, frequency, power-factor, and overload limits.
Control Boundary
The PCS performs the conversion; the surrounding battery, BMS, EMS or site controller provides operating limits, permissions, scheduling, and project-level strategy.
30kW System Integration
30kW Modular Power Conversion Block
The 30kW rating describes instantaneous conversion power, not stored energy capacity. Battery kWh determines how much energy is available, while PCS kW determines how quickly that energy can be charged or discharged within the supported voltage and current limits.
01
150–750V Battery-Side Matching
The charging/discharging window spans 150–750V, while full-load operation is specified from 350–750V. Matching a compatible high-voltage battery system therefore requires checking the actual pack voltage over SOC, the BMS current limits, and the intended operating power-not only the nominal battery voltage.
02
480Vac Three-Phase AC Integration
The AC side is specified as 3P3W+PE, 480Vac and 60Hz. Grid-tied voltage is listed at 480Vac ±15%; off-grid voltage is 480Vac ±5% configurable. This makes the unit a 480V three-phase battery inverter for systems designed around that AC platform.
03
Power Quality and Reactive-Power Range
For the AC interface, the specification lists THDi below 3% and leading/lagging power-factor capability. These parameters matter when the 30kW PCS is integrated into a facility AC bus and must operate within the site's electrical and interconnection requirements.
04
Parallel PCS Architecture
Scale the 30kW PCS Building Block Up to 10 Parallel Units.In applicable off-grid configurations,
the system supports the parallel operation of up to ten units using either
droop control or communication-based parallel control. There is no need to use different converter specifications for different capacity ratings.
Droop Control vs Communication Parallel
| Parameter | Droop Control Parallel | Communication Parallel |
| External Transformer | Yes | Yes |
| Maximum Parallel Units | 10 | 10 |
| Total Length of Parallel Lines | No limit | 7m |
19-Inch Rack-Mounted PCS for BESS Cabinet Integration
The mechanical format is one of this model's most specific deployment characteristics. The 440mm-wide chassis, rack-compatible design, forced-air cooling and IP20 rating indicate a PCS intended to be integrated inside a larger controlled electrical enclosure or BESS cabinet.
- Chassis Dimension:440 × 173 × 550mm
- With Handles:440 × 173 × 596mm
- Weight:33kg
- Cooling:Forced Air
- IP Rating:IP20
- Topology:Non-isolation
Cabinet-level design: rack compatibility does not replace enclosure engineering. Airflow, service clearance, ambient temperature, contamination level, cable routing, protection, and cabinet IP rating remain part of the complete BESS design.
PV Charger and Smart Transfer Switch Integration
We offer a variety of transmission components
DC-Coupled PV + Battery Architecture
An optional PV charger can introduce PV generation on the DC side of the storage architecture. In this configuration, the battery PCS continues to manage battery-to-AC bidirectional conversion while the PV charger manages the PV-side DC conversion. This is a more precise way to describe DC-coupled battery storage than labeling the base product as a hybrid inverter.
Grid / Backup Transfer Architecture
The optional smart transfer switch provides the switching layer required by backup-oriented system designs, while the PCS remains responsible for AC/DC power conversion. Separating the switching function from the PCS function clarifies where transfer, isolation, protection and power conversion occur in the complete electrical architecture.
30kW Bidirectional Storage Inverter FAQ
Q: What does the 30kW rating mean in a battery energy storage system?
A: The 30kW rating is the inverter's rated power-conversion capability. It describes how much power the PCS can process at a given time; it does not describe the battery's energy capacity in kWh. Battery capacity and PCS power should therefore be sized as separate but related BESS parameters.
Q: Can this PCS operate at full 30kW across the entire 150–750V battery range?
A: The supplied specification lists a 150–750V charging/discharging voltage range and specifically states 350–750V at full load. Battery pack voltage over the usable SOC range should therefore be checked against the required operating power.
Q: Is this a 480V three-phase battery inverter?
A: Yes. The AC specification lists 3P3W+PE, 480Vac for both grid-tied and off-grid operation. Grid-tied voltage tolerance is listed as ±15%; off-grid voltage is listed as ±5% configurable.
Q: How many 30kW PCS units can operate in parallel?
A: Applicable to up to 10 parallel units arranged using droop control or communication-based parallel operation in off-grid configurations. Before accounting for project-specific system limitations, ten 30 kW modules represent a nominal module rating of 300 kW.
Q: What is the difference between droop-control and communication-parallel configurations on this product?
A: Droop-control parallel is shown with no total line-length limit, while communication parallel is listed at 7m. The final project should follow the selected control and wiring architecture.
Q: What battery chemistries can be integrated with the inverter?
A: The product information lists lithium, lead-acid, sodium-ion, and flywheel storage. Compatibility should still be verified against battery voltage, current, BMS limits, protection logic, communications and operating commands rather than battery chemistry alone.
Q: What communication interfaces are available for BMS and EMS integration?
A: The listed communication ports are CAN, RS485, Ethernet and WiFi. Integration engineering should confirm the exact protocol implementation and required data points for the selected battery management system and energy management system.
Q: Is the 30kW unit a hybrid solar inverter?
A: The base product is described as a bidirectional storage inverter / battery PCS. The product information lists an optional PV charger for DC-coupled solar-plus-storage configurations. That is different from assuming dedicated PV MPPT input is integrated into the standard PCS itself.
Q: What should be considered when installing the PCS inside a BESS cabinet?
A: The product is 19-inch rack compatible, weighs 33kg, uses forced-air cooling and is rated IP20. Cabinet integration should account for mechanical support, airflow, service access, cable routing, ambient temperature, contamination level, protection and the enclosure rating required by the installation.
Discuss Your 30kW PCS Requirement
Share your battery voltage, required PCS power, grid configuration, and project requirements. We can use these details to confirm whether the 30kW Bidirectional Storage Inverter matches your BESS design.
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