Product Description:
The GREEF ENERGY multi-functional converter combines various key functions into a single unit. It supports AC-to-DC rectification specifically designed for Permanent Magnet (PM) generators, enabling efficient battery charging. In addition to this, it provides DC-to-AC inversion capabilities, allowing it to convert stored DC power back into usable AC power.
Equipped with a configurable dual LCD touchscreen, this converter offers a user-friendly interface that simplifies monitoring and control. It leverages advanced converter technology to maintain stable voltage and frequency control for Permanent Magnet Synchronous Generators (PMSGs), ensuring a reliable and uninterrupted power supply to connected loads.
Moreover, the device can be easily configured to operate in a grid-tied mode. This functionality permits seamless integration with the electrical grid, enabling both operation in synchronization with the grid and the ability to charge the grid when necessary. Overall, the GREEF ENERGY converter presents a versatile and robust solution for efficient energy management.
Technical Parameters:
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 rated voltage for the generator is 450 Vac, with an operating AC voltage range between 240 Vac and 550 Vac. The maximum allowable AC current is 180 A.
Battery Input Data
The system uses a lithium-ion battery with a voltage range from 350 Vdc to 450 Vdc. The rated battery voltage is set at 400 Vdc. The maximum charging and discharging current that the battery can handle is 250 A.
Output Side Parameters (Grid-Connected)
The rated charging and discharging power is 100 kW, with a maximum power capacity of 120 kW. The rated charge and discharge current is 144 A, while the maximum charge-discharge current reaches 173 A. The rated grid voltage stands at 400 V, and the permissible grid voltage range is from 300 V to 460 V. The grid frequency can be either 50 Hz or 60 Hz.
The current total harmonic distortion rate at rated power is less than 3%, ensuring power quality. The power factor is greater than 0.99, and it can vary within the range of -1 to 1. The generator can handle an overload capacity of 1.2 times the nominal power continuously for 1 minute.
AC Side Parameters (Off-Grid)
For off-grid operation, the rated input voltage is 400 V with a voltage deviation of ±2%. The total harmonic distortion rate for linear loads is maintained below 3%.
Protection Features
Protection mechanisms include optional over voltage and speed protection. AC short-circuit protection and AC output overcurrent protection are supported, along with Level 2 surge protection.
Basic Parameters
The device achieves a maximum efficiency of 95%. Its topology includes an AC-DC rectifier, a DC-DC buck-boost converter, and a DC-AC inverter integrated with an Energy Management System (EMS). The ambient operating temperature ranges from -40°C to 60°C, and the protection level is rated at IP54.
Display and Cooling
The display provides information on generator speed (rpm), input voltage (Vdc), input current (Vac), output power (kW), grid voltage (Vac), grid current (A), as well as power generated for today, this month, last month, this year, and last year. It also supports power curve settings. Cooling is managed through intelligent air cooling technology.
Additional Specifications
The maximum operating altitude is 4,000 meters, with derating applied above 3,000 meters. Standby power consumption is less than 50 W. The display features an LCD Smart Touch Screen. Communication modes include Ethernet, RS485, and WIFI.
Physical Dimensions
The device measures 1500 mm in height, 1500 mm in width, and 1300 mm in depth. Its weight, excluding the dump load, is less than or equal to 600 kg.
Applications:
The GREEF ENERGY multi-functional converter is an exceptionally versatile system designed to cater to a broad spectrum of applications, especially where dependable and intelligent power management is essential. This device excels in several key areas, making it a valuable component in modern energy solutions.
In the realm of renewable energy systems, the converter is perfectly suited for integrating Permanent Magnet Synchronous Generators (PMSGs) derived from wind turbines, hydro turbines, and similar sources. It effectively supports off-grid or hybrid power setups by delivering stable alternating current (AC) power to connected loads, ensuring reliable performance in diverse environmental conditions.
When it comes to off-grid and backup power scenarios, the GREEF ENERGY converter functions as the central unit responsible for power conversion and management. It is ideal for standalone systems including remote locations, cabins, and telecommunications stations, where it efficiently manages generator inputs, battery charging processes, and inverter outputs to maintain continuous power availability.
Additionally, the system can be tailored for grid-interactive applications. This configuration allows the device to operate in a grid-tied manner, facilitating battery charging from the grid and potentially enabling excess energy to be fed back into the grid, depending on local regulatory conditions and system settings.
For industrial and commercial power management purposes, the converter offers a robust solution capable of maintaining a stable power supply even under unbalanced load conditions. It also supports remote monitoring through WIFI or LAN connections and can be integrated with building management systems using the Modbus communication protocol.
The product is further enhanced by optional specialized control features. These include capabilities such as water gate motor control tailored for micro-hydropower plants and the integration of a Static Transfer Switch (STS), which allows smooth and automatic switching between grid-connected and off-grid modes.
Overall, the GREEF ENERGY multi-functional converter acts as a comprehensive platform that unifies power generation, storage, consumption control, and grid connection functionalities. Its modular design and configurable options grant it the flexibility to be deployed effectively across a wide range of complex scenarios—from residential off-grid energy storage systems and commercial backup solutions to small-scale renewable energy power plants.
Customization:
The Greef AC PCS On Grid Controller is a high-performance product designed to optimize energy management with advanced features. Manufactured in China and certified with CE, this controller ensures reliability and safety for your energy systems.
This model integrates a PWM unloading+three-phase unloading system, providing efficient and stable power conversion. The topology includes AC-DC Rectifier, DC-DC Buck Boost, and DC-AC Inverter with EMS, supporting a rated grid voltage of 400V and a battery voltage range of 350-450Vdc. It achieves a maximum efficiency of 95%, ensuring optimal energy utilization.
The on grid controller features a user-friendly touch screen display that shows comprehensive real-time data such as Generator Speed (rpm), Input Voltage (Vdc), Input Current (Vac), Output Power (kW), Grid Voltage (Vac), Grid Current (A), and detailed power generation statistics including Power Generated Today, This Month, Last Month, This Year, Last Year, as well as Power Curve Setting.
Each unit is carefully packaged with foam and plywood cases to ensure safe delivery within 25 working days. The minimum order quantity is 1 set, with pricing negotiable to meet your specific needs. Payment terms include T/T, Western Union, MoneyGram, and L/C, providing flexible options for customers worldwide.
With a strong supply ability, Greef guarantees prompt production and delivery of the AC PCS on grid controller, making it an ideal solution for efficient energy management and grid integration.
