Product Description:
The GREEF ENERGY multi-functional converter combines several key functions into a single device. It is capable of performing AC-to-DC rectification specifically designed for permanent magnet (PM) generators, as well as facilitating battery charging, DC-to-AC inversion, and managing energy through an integrated system.
Equipped with a configurable dual LCD touchscreen, this converter employs advanced converter technology that ensures stable control of voltage and frequency for permanent magnet synchronous generators (PMSGs). This stability guarantees a continuous and reliable power supply to various loads.
Additionally, the converter can be configured to operate in a grid-tied mode. In this mode, it supports seamless integration with the power grid, allowing both operational use and grid charging functions to be performed efficiently.
Technical Parameters:
| Model | Mars-100kt |
| Rated power(kW) | 100 |
| Rated voltage(Vac) | ≥ 320 |
| Optimal generator rated voltage(Vac) | 450 |
| AC votlage working range(Vac) | 240 ~ 550 |
| Maximum AC current(A) | 180 |
| Battery type | Lithium-ion |
| Battery voltage range(Vdc) | 350 - 450 |
| Rated battery voltage(Vdc) | 400 |
| Max charging&discharging Current(A) | 250 |
| Rated charging/discharging power(kw) | 100 |
| Rated charge and discharge current(A) | 144 |
| Rated grid voltage(V) | 400 |
| Permissible grid voltage range(v) | 300 - 460 |
| Rated grid frequency(Hz) | 50 / 60 |
| Maximum efficiency(%) | 95 |
Generator AC Input Side Parameters
The generator has a rated power of 100 kW and a rated voltage of at least 320 Vac. The optimal generator rated voltage is specified as 450 Vac. The AC voltage working range spans from 240 Vac to 550 Vac, with a maximum allowable AC current of 180 A.
Battery Input Data
The battery used is a lithium-ion type with a voltage range between 350 Vdc and 450 Vdc. Its rated battery voltage is 400 Vdc. The maximum charging and discharging current supported is 250 A.
Output Side Parameters (Grid-Connected)
The rated charging and discharging power on the output side is 100 kW, with a maximum achievable power of 120 kW. The rated charge and discharge current is set at 144 A, while the maximum charge-discharge current can reach 173 A. The system is designed to operate with a rated grid voltage of 400 V, within a permissible range of 300 V to 460 V. It supports grid frequencies of 50 Hz and 60 Hz.
The current total harmonic distortion rate at rated power is less than 3%. The power factor exceeds 0.99 and ranges from -1 to 1. The system has an overload capacity of 1.2 times the nominal power for continuous operation lasting one minute.
AC Side Parameters (Off-Grid)
In off-grid mode, the rated input voltage is 400 V with a voltage deviation tolerance of ±2%. The total harmonic distortion rate for linear loads remains below 3%.
Protection Features
- Over voltage and speed protection: Optional
- AC short-circuit protection: Supported
- AC output overcurrent protection: Supported
- Surge protection: Level 2
Basic Parameters
The unit achieves a maximum efficiency of 95% and employs a topology consisting of an AC-DC rectifier, DC-DC buck-boost converter, and a DC-AC inverter. It integrates an Energy Management System (EMS) for optimized operation.
The ambient operating temperature ranges from -40°C to 60°C, and the unit has a protection level rated at IP54.
Display and Cooling
The display provides a variety of data including generator speed (rpm), input voltage (Vdc), input current (Vac), output power (kW), grid voltage (Vac), grid current (A), and energy generated for various periods (today, this month, last month, this year, and last year). It also supports power curve settings.
Cooling is managed by an intelligent air cooling system.
Additional Specifications
The maximum operating altitude is 4,000 meters with derating applicable above 3,000 meters. Standby power consumption is less than 50 W.
The display is an LCD SMART Touch Screen, and communication modes include Ethernet, RS485, and WiFi.
Physical Dimensions
The unit's dimensions excluding the dump load are as follows: height 1500 mm, width 1500 mm, and depth 1300 mm. The weight of the unit without the dump load is up to 600 kg.
Applications:
The GREEF ENERGY multi-functional converter presents a versatile and highly adaptable solution designed to meet the demands of various power management scenarios. It excels in applications requiring dependable and intelligent control over energy systems, making it an essential component for modern energy infrastructures.
One of its primary uses is within renewable energy systems. The converter is especially effective at integrating Permanent Magnet Synchronous Generators (PMSGs), commonly found in wind and hydro turbine setups. This integration supports off-grid or hybrid power frameworks by delivering consistent and stable AC power to connected loads.
For off-grid and backup power applications, the converter functions as the central hub for power conversion and system management. This role is crucial for standalone installations such as remote locations, cabins, or telecommunications sites, where it manages inputs from generators, handles battery charging processes, and controls inverter outputs to ensure uninterrupted power supply.
Additionally, the system can be configured to operate in grid-interactive mode. This capability enables battery charging from the grid and, where regulations allow, the feeding of surplus electricity back into the grid. These features broaden the converter’s flexibility in managing power flows within grid-tied systems.
The device is also well-suited for industrial and commercial environments that demand reliable power under unbalanced load conditions. It supports remote monitoring through WIFI or LAN connections and can be integrated seamlessly with building management systems using Modbus protocols, enhancing operational visibility and control.
Beyond these core functions, the GREEF ENERGY converter offers specialized control options tailored to specific applications. These include water gate motor control for micro-hydropower plants and the incorporation of a Static Transfer Switch (STS) to facilitate smooth transitions between grid-connected and off-grid modes.
Overall, this product acts as a comprehensive platform that consolidates power generation, storage, consumption management, and grid integration capabilities. Its modular design and configurable options allow for flexible deployment across a wide range of scenarios, from residential off-grid systems and commercial backup power solutions to small-scale renewable energy power plants.
Customization:
Introducing the Greef AC PCS On Grid Controller, a high-quality product manufactured in China with CE certification. This advanced on grid controller features an LCD SMART Touch Screen display, providing an intuitive and user-friendly interface for easy operation and monitoring.
The Greef AC PCS is designed with intelligent air cooling to ensure optimal performance and longevity. It supports a rated battery voltage of 400Vdc and operates efficiently within a battery voltage range of 350 - 450Vdc.
This on grid controller offers comprehensive display contents including Generator Speed (rpm), Input Voltage (Vdc), Input Current (Vac), Output Power (kW), Grid Voltage (Vac), Grid Current (A), as well as detailed power generation statistics such as Power Generate Today (kWh), This Month, Last Month, This Year, and Last Year. Additionally, it features a power curve controller function for precise energy management and optimization.
Packaged securely in foam and plywooden cases, each unit is available with a minimum order quantity of 1 set. Pricing is negotiable to suit your project requirements. Delivery time is approximately 25 working days, with flexible payment terms including T/T, Western Union, MoneyGram, and L/C.
Choose the Greef AC PCS On Grid Controller for reliable performance, advanced touch screen display capabilities, and superior power curve controller functionality to enhance your energy system.
