Product Description:
GREEF ENERGY's multi-functional converter is a versatile device that combines several key functionalities into one system. It performs AC-to-DC rectification specifically designed for permanent magnet (PM) generators, manages battery charging, and handles DC-to-AC inversion. Additionally, it incorporates an advanced energy management system to optimize overall performance.
Equipped with a configurable dual LCD touchscreen, this converter leverages cutting-edge technology to maintain stable voltage and frequency control when working with permanent magnet synchronous generators (PMSGs). This ensures a continuous and reliable power supply to connected loads without interruption.
Moreover, the converter can be easily switched into a grid-tied mode, allowing it to operate in synchronization with the utility grid. In this mode, it also supports grid charging, providing greater flexibility and efficiency for various energy management scenarios.
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 AC voltage working range spanning from 240 Vac to 550 Vac. The maximum AC current supported is 180 A.
Battery Input Data
This system uses a lithium-ion battery with a voltage range between 350 Vdc and 450 Vdc. The rated battery voltage is 400 Vdc, and it can handle a maximum charging and discharging current of 250 A.
Output Side Parameters (Grid-Connected)
On the grid-connected output side, the rated charging and discharging power is 100 kW, with a maximum charge and discharge power of 120 kW. The rated charge and discharge current is 144 A, while the maximum charge-discharge current reaches up to 173 A. The rated grid voltage is 400 V, and it can tolerate a permissible grid voltage range from 300 V to 460 V. The rated grid frequency is either 50 Hz or 60 Hz.
The system maintains a current total harmonic distortion rate of less than 3% at rated power, and features a power factor greater than 0.99, with a power factor range from -1 to 1. Additionally, the generator can continuously endure an overload capacity of 1.2 times its nominal power for 1 minute.
AC Side Parameters (Off-Grid)
The rated input voltage on the AC side for off-grid applications is 400 V, allowing for a voltage deviation of ±2%. The total harmonic distortion rate, measured with a linear load, remains under 3%.
Protection Features
The system optionally includes over-voltage and speed protection. It supports AC short-circuit protection, AC output overcurrent protection, and features surge protection rated at Level 2.
Basic Parameters
The maximum efficiency of the generator system reaches 95%. The topology consists of an AC-DC rectifier, a DC-DC buck-boost converter, and a DC-AC inverter, accompanied by an Energy Management System (EMS). It is designed to operate within an ambient temperature range from -40℃ to 60℃ and has a protection level of IP54.
Display and Cooling
The display shows various data including generator speed (rpm), input voltage (Vdc), input current (Vac), output power (kW), grid voltage (Vac), grid current (A), and energy generated over different time periods, such as today, this month, last month, this year, and last year. It also allows for power curve settings. Cooling is managed through an intelligent air cooling system.
Additional Specifications
The maximum operating altitude is 4,000 meters, with derating applied when the altitude exceeds 3,000 meters. Standby power consumption is less than 50 W. The display utilizes an LCD smart touch screen, and communication modes include Ethernet, RS485, and WiFi.
Dimensions and Weight
The physical dimensions of the generator, excluding the dump load, are as follows: height of 1500 mm, width of 1500 mm, and depth of 1300 mm. The weight without the dump load is no more than 600 kg.
Applications:
The GREEF ENERGY multi-functional converter is an exceptionally versatile system designed to cater to a variety of applications, especially where dependable and intelligent power management is essential. This converter stands out due to its adaptability and advanced features, making it suitable for many different energy setups.
One of the primary uses of this system is in Renewable Energy Systems. It is particularly effective for integrating Permanent Magnet Synchronous Generators (PMSGs), which are commonly used in wind turbines and hydro turbines, into off-grid or hybrid power arrangements. This integration ensures a stable AC power supply to connected loads, enhancing the reliability of renewable energy sources.
Additionally, the converter plays a crucial role in Off-Grid and Backup Power scenarios. It acts as the main power conversion and management unit for isolated systems such as remote locations, cabins, or telecommunications stations. It efficiently manages generator inputs, battery charging processes, and inverter outputs to maintain a consistent power supply.
For Grid-Interactive Systems, the GREEF ENERGY converter can be configured to operate in a grid-tied mode. This configuration allows batteries to be charged from the electrical grid and, depending on local regulations and system settings, enables excess power to be fed back into the grid, optimizing energy use and potential returns.
In the realm of Industrial and Commercial Power Management, this converter proves highly suitable for conditions requiring a stable power supply, even when facing unbalanced loads. It also offers remote monitoring capabilities via WIFI or LAN, and supports integration with building management systems through Modbus communication protocols.
Moreover, the GREEF ENERGY converter provides specialized control options tailored to unique application needs. This includes features such as controlling water gate motors in micro-hydropower plants and incorporating a Static Transfer Switch (STS) for smooth transitions between grid-connected and off-grid operation.
Overall, this product functions as a fundamental platform that brings together power generation, energy storage, consumption management, and grid integration. Its modular and configurable design allows for flexible deployment across various complex scenarios, ranging from residential off-grid energy storage solutions and commercial backup power systems to small-scale renewable energy power plants.
Customization:
The Greef AC PCS On Grid Controller, manufactured in China and CE certified, offers exceptional product customization services tailored to your needs. With a rated power of 100 kW and a rated battery voltage of 400 Vdc, this advanced controller features a power curve controller function that ensures optimal energy management and efficiency.
Equipped with a powerful remote control system, the AC PCS model provides seamless monitoring and operation, enhancing user convenience and control. Its sophisticated PWM unloading combined with a three-phase unloading system guarantees stable and efficient power distribution, maximizing system reliability.
Designed with a topology integrating AC-DC Rectifier, DC-DC Buck Boost, and DC-AC Inverter EMS, the controller achieves a maximum efficiency of 95%, supporting grid frequencies of 50Hz/60Hz. Greef offers flexible order options with a minimum order quantity of just 1 set, negotiable pricing, and secure packaging using foam and plywood cases to ensure safe delivery within 25 working days.
Payment terms are convenient and versatile, including T/T, Western Union, MoneyGram, and L/C. With strong supply ability, the Greef AC PCS On Grid Controller is an ideal choice for customized power management solutions requiring high efficiency and reliable performance.
