MARSTON TECHNOLOGY

Wind power.
Under control.

Crane-assisted wind turbine installation against a clear blue sky.

From rotor movement to usable power.

A wind turbine brings mechanical motion, control decisions and electrical conversion together. Explore how these functions connect, what each component does, and which interfaces define the equipment for a project.

01ELECTRIC YAW

Direction is a control decision.

Yaw changes the orientation of the nacelle and rotor about the tower. In an electric yaw arrangement, a motor drives this movement in response to a control command. It is a different function from blade pitch, which changes a blade’s angle about its own axis.

The useful engineering question is how sensing, movement and operating state work together. Wind direction alone is not a complete control specification: the timing of a command, the conditions that permit movement and the response to an unavailable signal all matter.

FD14-50 kW / CONFIGURATION

Electric yaw.
Permanent-magnet direct drive.

On the current FD14-50 kW configuration, an electric motor drives the yaw mechanism. This 50 kW platform has a 14 m, three-bladed rotor and a brushless permanent-magnet direct-drive generator.

Inside the 50 kW platform
Wind turbine generator and nacelle assembly with an open electrical enclosure.
01

Sense

Identify the wind-direction input and its reference. Sensor location, signal validity and the recorded measurement help explain a yaw command.

02

Decide

Define when to move and when to wait. The control description should connect direction error, operating state and the selected model’s movement criteria.

03

Actuate

An electric drive turns the nacelle. Review how motion is stopped, how position is checked and how the drive is accessed for service.

02POWER CONVERSION

Follow the power.
Define every interface.

A generator, a controller and a converter have different roles. Selecting them together means matching electrical characteristics and operating requirements, rather than matching only a power rating.

01

Generator

The generator converts rotor-driven mechanical power into electricity. Its electrical characteristics are the starting point for selecting downstream equipment. The FD14-50 kW example uses a permanent-magnet direct-drive generator; its generator terminals and the converter’s AC output are separate specification boundaries.

02

Controller

The control layer connects measured signals with operating decisions. A useful control description identifies inputs, outputs, state changes and equipment responsibilities. It also shows which functions belong to the turbine controller and which belong to the conversion equipment.

03

Converter

Power conversion prepares electrical output for the intended connection. Begin with the generator input characteristics, then define the required output voltage, frequency and connection arrangement. The reviewed FD14-50 kW grid-connected configuration specifies 380 V line-to-line at the converter output; other project requirements need a separate equipment selection.

04

MPPT

Maximum power point tracking is a control approach for seeking a useful power-producing operating point as conditions change. In wind systems, electrical loading and rotor behaviour are connected. Ask which equipment implements the strategy and which model-specific operating limits apply; MPPT is not a universal compatibility label.

03OPERATING STATES

A defined response.
A controlled return.

A brake describes hardware. A protection sequence describes the event, the commanded response and the conditions for returning to operation. The current FD14-50 kW configuration uses hydraulic disc braking alongside its electric yaw drive. The topics below form a review framework for the selected equipment, not a universal fitted-feature list.

01

Start and run

Separate rotor movement from electrical generation. Define the conditions for entering the generating state and the measurements used to confirm it. A rotor start-up wind speed does not, by itself, establish useful electrical cut-in.

02

Controlled stop

Document which device requests the stop and how the turbine, electrical loading and brake are coordinated. Include the final state and the indication that confirms completion.

03

High wind and rotor speed

Review the measured quantity, averaging period, threshold and delay together. A wind-speed number without its operating state and reset conditions is an incomplete protection description.

04

Electrical interruption

Trace what happens when the grid, load or auxiliary supply becomes unavailable. Identify which equipment remains powered and which device is responsible for the resulting turbine state.

05

Signal and communication loss

Distinguish an unavailable measurement from a normal value. For each required signal or connection, define the detection method, the resulting response and the information retained for fault diagnosis.

06

Reset and service

Define which conditions must clear before a restart and whether acknowledgement is local or remote. Match inspection, isolation and service access to the supplied model’s operating and maintenance documentation.

04SYSTEM INTEGRATION

The connection defines
the equipment.

Grid-connected generation, an isolated load and a hybrid energy system place different demands on the electrical interface. Start with the destination of the power, then work back through conversion, control and the turbine. A single-line diagram makes the connection points and equipment boundaries visible.

EQUIPMENT SCOPE

Turbine. Controller. Converter.

MARSTON can discuss turbine, controller and converter supply separately, with tower supplier coordination where required. For hybrid projects, identify the third-party solar, storage and supervisory equipment before assessing interfaces. MARSTON does not currently offer its own storage product.

Explore solutions
Electrical cabinet with wiring, terminal blocks and circuit protection components.
Grid interface
State the connection voltage, frequency, phase arrangement and proposed point of connection. Include the utility’s technical requirements and the project’s behaviour during an outage.
Load and operating profile
Describe continuous and peak demand, starting loads, operating hours and critical services. For an isolated system, define how the load is supported when wind generation is insufficient.
Site and equipment scope
Provide wind-resource information, tower location, cable route and service access. Identify who supplies each component and who owns installation, commissioning and interface responsibilities.

05TECHNICAL READING

Go deeper.
Ask better questions.

Use the articles and model pages to prepare your technical discussion. For project documentation, specify the turbine model, proposed connection and equipment scope so the requested information refers to the right configuration.

ENGINEERING DISCUSSION

Put the technology
in your project context.

Share the model, site conditions and proposed electrical connection. Request the relevant specification, interface information and operating documentation for your equipment scope.

Technology / Further reading

Engineering guides

Explore the site evidence, electrical interfaces and service records behind a project-specific equipment review.