This wind & storage converter is the core control unit of mine wind-storage microgrid. It rectifies variable AC power from wind turbines and realizes bidirectional power conversion for battery storage. It supports off-grid island & black start, stabilizes voltage and frequency for mining heavy loads.
Wind & Storage Converter in Microgrid
- 1. Supports off-grid island & black start, reliable power for remote mines without utility grid
- 2. VSG virtual synchronous control, stabilizes voltage and frequency under heavy mining load fluctuations
- 3. Wide ambient temperature -40℃~+55℃, dust and sand resistant for desert & plateau mine sites
- 4. Peak conversion efficiency ≥97.2%, cuts power operating cost for mining operations
- 5. Modular parallel design, seamless integration with MV/35kV/66kV mine switchgear EPC system
Wind & Storage Converter for Off-Grid Mine Microgrid
Our Wind & Storage Converter integrates wind power rectification and bidirectional energy storage conversion functions, developed referencing mature technology from leading suppliers including Hopewind, NARI and Xiangneng Chudian. It serves as the core power control unit for hybrid wind-storage microgrid systems in remote mining sites. It realizes coordinated power regulation between distributed wind turbines, battery energy storage and mine loads, supporting both grid-tied and off-grid island operation, black start and voltage/frequency stabilization for mine substations. The modular design can seamlessly integrate with our MV / 35kV / 66kV mine switchgear to form a complete mine renewable power EPC solution.
System Connection & Working Principle
Main Purpose: This converter acts as the “power brain” of mine wind-storage microgrid. It converts unstable wind power and coordinates battery charging & discharging, to deliver stable, controllable AC power for mining heavy loads, mineral processing plant and mining EV truck charging stations. It can build standalone island power supply for mines without public grid access.
- DC Side (Top / Input Side): Connected to two DC sources: wind turbine DC bus and battery energy storage system. It rectifies variable AC power from wind turbines into DC, and performs bidirectional charge/discharge control for battery packs.
- AC Side (Bottom / Output Side): Output stable low-voltage AC, which feeds into a step-up transformer. After voltage boosting, power is delivered to our medium / high voltage switchgear (10kV / 35kV / 66kV), and finally supplies all on-site mine loads.
Technical Parameters
| Rated Power | 1.5MW / 2.0MW / 2.5MW / 2.75MW / 3.15MW optional |
| DC Side Voltage Range | 696V ~ 1500V |
| AC Rated Output Voltage | 690V, 550V, 480V optional; match 10kV/35kV/66kV step-up transformer |
| Rated Frequency | 50Hz / 60Hz adaptive |
| Max Conversion Efficiency | ≥97.2% |
| Current THD | ＜3% under rated working condition |
| Power Factor | -1 ~ +1 continuously adjustable |
| Operation Mode | Grid-tied / Off-grid island / Black start / VSG grid-forming |
| Cooling Method | Air cooling / Liquid cooling optional |
| Protection Grade | IP54 (outdoor cabinet version available) |
| Ambient Temperature | -40℃ ~ +55℃ (derating above +45℃) |
| Altitude Adaptation | ≤2000m standard; customized for plateau up to 5000m |
| Communication Protocol | Modbus, IEC61850, support SCADA & mine smart energy management system |
| Protection Functions | LVRT, HVRT, overvoltage/undervoltage, overcurrent, overheating, islanding protection |
Application Scenarios
- Off-grid remote open-pit mine wind & storage hybrid microgrid
- Mine renewable power station integrated with distributed wind turbine + battery energy storage
- Mine substation power stabilization, peak shaving and load shifting
- Power supply for mining truck charging & battery swap stations
- Emergency backup power for mine processing plant and critical safety loads
- Island power supply for remote mine camp without public grid access
Core Advantages
- Wind-storage coordinated control: Smooth fluctuation of wind power output, stabilize mine bus voltage & frequency, reduce impact on mine heavy loads.
- Grid-forming & black start capability: Build stable island power for mines without utility grid; restore power automatically after blackout.
- Harsh mining environment adaption: Wide temperature range, anti-dust & anti-sand design, plateau customized version available for high-altitude mining zones.
- High efficiency & low loss: Advanced three-level topology, peak efficiency ≥97.2%, reduce mine power operation cost.
- Seamless integration: Perfectly matched with mine MV/35kV/66kV switchgear, transformers and smart energy management system for full EPC packages.
- Modular & parallel expandable: Multiple units parallel operation, flexible capacity expansion as mine production scale grows.
Product Features
- Integrated dual function: wind energy rectification + bidirectional battery energy storage conversion
- VSG virtual synchronous generator control for strong voltage & frequency support under weak grid / off-grid mine condition
- Fast mode switch, charge-discharge transition within 30ms, reliable for sudden mine load change
- Complete multi-layer protection: LVRT, HVRT, anti-islanding, over-current, over-temperature protection
- Local touch screen monitoring + remote cloud monitoring, compatible with mine SCADA platform
- Optional containerized skid-mounted design for fast site installation and commissioning on mine sites
FAQ
Q1: Can this wind & storage converter work for off-grid mine microgrid?
A: Yes. It supports off-grid island mode and black start. It can build stable power supply for remote mines without public grid, coordinating distributed wind turbine and battery storage together.
Q2: Can it connect with your medium voltage / 35kV /66kV mine switchgear?
A: Fully compatible. The AC output can connect with step-up transformer and then link to our MV or high voltage mine switchgear, forming a complete mine renewable power distribution system.
Q3: What cooling option should I choose for desert mine site?
A: Liquid cooling version is recommended for high-temperature desert mines. Air cooling is suitable for conventional mines with good ventilation. IP54 protection as standard to resist sand and dust.
Q4: Does it support parallel connection of multiple converters for large mine projects?
A: Yes. Multiple units can run in parallel to expand total capacity, ideal for large scale mining EPC projects with high power consumption.
Q5: What certificates can be provided for overseas mining EPC tender?
A: IEC test reports as standard. We can also provide FAT test document, protection test report and customized certification support for regional mining authority approval.
Q6: What is the typical lead time?
A: Standard air-cooled model: 6–10 weeks. Liquid cooling and customized high-power containerized solution will be quoted separately based on specifications and certification requirements.
Get in touch
Have a project in mind ? Send us your ore assay report, mine location and target capacity. Our mining engineers will prepare a customized process design, equipment list and quotation within 48 hours.