Solution

Atekon Technology Co., Ltd.

A Control System Solution for Wind Turbine Generators Based on Self-Controllable PLCs

Release date:

2022-03-28

 

Preface

Our country has pledged to strive for Achieve peak carbon emissions before 2030 and strive to reach carbon neutrality by 2060. . Wanting to achieve The goals of peaking carbon emissions by 2030 and achieving carbon neutrality by 2060 require a fundamental transformation in development approaches, backed by technological innovation. A key component is establishing a clean, efficient, and secure energy system, one that forms a zero-carbon emission energy framework centered around new and renewable energy sources.

 

Wind energy, as a clean and renewable source of power, is increasingly gaining attention from countries around the world. China boasts vast and widely distributed wind energy resources—on land alone, the estimated reserves amount to approximately 253 million kilowatts. By the end of 2020, the country’s cumulative installed wind power capacity reached 281 million kilowatts, with 271 million kilowatts coming from onshore wind farms and about 9 million kilowatts from offshore wind projects.

 

Autonomization and domestic production are the prevailing development themes advocated by the nation. As a core component of China's renewable energy sector, wind power has undergone During the 13th Five-Year Plan period, China’s wind power sector has made significant strides, achieving a transformative leap from following to keeping pace with global leaders. However, critical bottlenecks still exist in wind turbine components. To foster high-quality development of China’s wind energy industry and ultimately secure global leadership in key areas, domestic production of wind turbine generators is an essential and inevitable path forward.

 

Developed and researched by Aotuo Technology The NJ300 self-reliant and controllable series of PLCs has been specifically optimized—both in hardware and software—to meet the unique requirements of the wind power industry, resulting in a dedicated PLC system tailored for wind turbine main control applications. Aotuo Technology offers comprehensive solutions for wind turbine main control systems, designed to cater to various power ranges.

 

 

1.5MW-2MW
Wind Turbine Main Control System Solution

 

Usually for The main control system for 1.5MW to 2MW wind turbines features a relatively small number of control points and typically uses a single 12-slot backplane, installed inside the nacelle control cabinet. The CPU occupies two slots on this backplane. The CPU integrates two 485 communication ports, supporting both standard MODBUS and free-port communication protocols; it also includes two One CAN port supporting the CANopen communication protocol; integrated with 2 Ethernet ports for program upload and download, and compatible with MODBUS.   The TCP communication protocol, with network port 2 supporting daisy-chain connections, enables scalable remote I/O substations.

 

The main rack can be equipped with DI/DO/AI/RTD/HSC modules can be used for collecting and processing fan control status data, as well as fan speed acquisition. Additionally, these modules allow connecting up to four 485 or CANOPE communication units—even when the CPU’s native communication interfaces are insufficient—enabling seamless communication with equipment such as pitch systems, yaw mechanisms, converters, frequency inverters, and anemometers.

 

 

 

 

 

3MW-5MW
Wind Turbine Main Control System Solution

 

For The main control system for 3MW to 5MW wind turbines is typically divided into a nacelle control section and a tower base control section. The main CPU is housed in the nacelle cabinet, with fiber-optic connections linking the two sections. Communication for components like pitch control and yaw systems primarily occurs within the nacelle cabinet, while converter communication takes place in the tower base cabinet. Additionally, the high-speed counting module used for collecting turbine speed data is usually installed directly on the main machine frame.

 

 

 

 

More than 5 MW
Wind Turbine Main Control System Solution

 

For wind turbines with a capacity exceeding 5 MW, the control points within the nacelle cabinet are numerous, typically requiring two or more 12-slot racks. The CPU is installed in the main rack, while communication for key components such as pitch control and yaw systems is still handled via the main rack—including the high-speed tachometer module used for turbine speed measurement.

 

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