Coal mills motors

In coal-fired power generation systems, coal mills serve as core equipment ensuring stable boiler combustion and power generation efficiency. As the power source for these mills, the starting performance, operational efficiency, and reliability of electric motors directly impact the operational safety and energy consumption levels of the entire production line. The YSTM, YSHP, and YSMPS series of medium-to-low-speed coal mill motors, specifically engineered for this application, are widely deployed in coal mill systems across thermal power and other industries. These motors are purpose-built to drive coal mills in power plants.

In a major retrofit project at a large coal-fired power plant, the client's existing coal mill drive system suffered from difficult starts, significant current surges, and persistently high energy consumption during long-term operation. These issues impacted unit load regulation and operational stability. After technical comparisons, the project team selected YSTM series medium-speed coal mill motors to replace the original drive units.

Actual operational results demonstrate that the new motors consistently deliver sufficient starting torque under both full-load and cold-start conditions, effectively resolving the original system's slow startup and stalling issues. Concurrently, optimized electromagnetic losses and ventilation/cooling structures have significantly reduced overall system power consumption. The system maintains excellent temperature rise control and vibration levels during continuous operation. The motors operate smoothly with low noise, reducing equipment maintenance frequency and enhancing the overall availability of the coal grinding system.

The YSHP and YSMPS series offer differentiated design solutions tailored to varying rotational speeds and load characteristics, meeting the application requirements of medium- and low-speed coal mills across different voltage levels and capacity ranges. These products are widely deployed in large-scale thermal power projects, maintaining a high market share within the industry due to their high starting torque, low system power consumption, and proven engineering application experience.

As the thermal power industry increasingly demands energy conservation, reduced consumption, and enhanced equipment reliability, coal mill drive systems have become a critical component of power plant technological upgrades. Through standardized design and project-based application validation, the YSTM, YSHP, and YSMPS series of medium- and low-speed coal mill motors provide stable, efficient, and low-energy-consumption drive solutions for power generation enterprises. These solutions support long-term safe operation and cost optimization at power plants.

For power plant projects planning new construction or retrofitting coal grinding systems, selecting high-performance motors specifically engineered for milling conditions not only enhances start-up reliability but also significantly reduces long-term energy consumption and maintenance costs. This approach strengthens overall unit operational efficiency and competitiveness.

Product coverage:

Capacity: 220 - 4000 kW

Voltage: 6kV, 10kV

Center height: H450 - H800

Number of poles: 6P, 8P

Industry standing

In the localization process of thermal power equipment, Simo Motors, as an industry pioneer and core manufacturer, has long been deeply engaged in the field of large-scale thermal power supporting motors, maintaining a leading market share in China's thermal power industry. Leveraging a comprehensive R&D system and mature manufacturing capabilities, the company has developed a product portfolio of high-voltage, high-power, and multi-specification thermal power supporting motors. These products are widely applicable to critical systems such as coal mills, forced draft fans, induced draft fans, circulating water pumps, and feedwater pumps.Against the backdrop of ongoing upgrades and modernization in the thermal power industry, power plant users now demand higher standards from electric motors: high reliability, long-term stable operation, capability to handle heavy-load starting conditions, and maintaining excellent energy efficiency performance at both 6kV and 10kV voltage levels. Simo Motors has optimized its product design around these core pain points, establishing a comprehensive series of motors tailored for thermal power applications. This product portfolio addresses diverse capacity requirements and operational conditions.

In practical engineering applications,Simo Motors has provided stable and reliable drive solutions for multiple large-scale thermal power projects:

At the Shaanxi Fugu Qingshuichuan Power Plant project, YHP710-6 1150kW 10kV high voltage motors were deployed to drive critical auxiliary systems. This project demanded exceptionally high starting torque and continuous operational stability from the equipment. After commissioning, the motors operated smoothly with well-controlled temperature rise and vibration, effectively ensuring flexibility in unit load regulation.

At the Datang Yangcheng Power Plant project, YTM800-6 2500kW 10kV high-voltage motors were deployed. This capacity class represents core drive equipment for large thermal power units, demanding higher standards for motor structural strength and heat dissipation systems. Through optimized electromagnetic design and bearing structure, the motor maintains stable output under high-load continuous operation, reducing the risk of unplanned shutdowns.

For the Guodian Taizhou Power Plant project, the YMPS630-6 1000kW 6kV motor was selected to meet the drive requirements for medium-capacity auxiliary equipment. This series delivers excellent efficiency and starting performance in 6kV systems, providing robust support for the plant's energy-saving operations.

These exemplary achievements demonstrate that Simo Motors not only possesses mature product capabilities covering diverse power ratings (1000kW–2500kW and above) and voltage levels (6kV, 10kV), but also has proven the reliability and stability of its products through long-term engineering applications. For overseas power plant projects, selecting manufacturers with extensive thermal power project experience and comprehensive product portfolios is crucial for mitigating procurement risks and ensuring long-term operational safety.

As global energy restructuring and power plant energy-saving retrofits advance, high-efficiency, stable, and domestically replaceable thermal power motors will continue to gain market attention. Leveraging its robust engineering expertise and high-power, high-voltage motor manufacturing capabilities, Simo Motors is delivering reliable drive solutions for an increasing number of domestic and international thermal power projects, providing solid support for efficient, safe, and sustainable plant operations.