Feedwater Pump Motors

YXKS / YSKS Series Three-Phase Asynchronous Motors – Industry Application Case

Project Background

Feedwater pump systems are critical core equipment in thermal power plants, nuclear power plants, and large-scale industrial installations. Their operational safety, reliability, and energy efficiency directly affect the long-term stable operation of the power units.

With the development of large-scale power units toward high parameters, high capacity, high efficiency, and low energy consumption, feedwater pump motors are required to achieve higher standards in power density, insulation reliability, and long-term continuous operation capability.

Based on profound technical expertise and engineering experience, Shanghai Electric Group, Shanghai Electric Motor Factory Co., Ltd. has successfully developed and deployed the YXKS / YSKS series feedwater pump three-phase asynchronous motors, providing highly reliable power solutions for large-scale domestic power projects.

Product Overview

The YXKS / YSKS series feedwater pump motors are high-end, high-power asynchronous motors developed by Shanghai Electric since the 21st century. This series adopts the company’s mature and reliable reduced-resin VPI vacuum pressure impregnation insulation system, combined with advanced electromagnetic, thermal, structural strength, and rotor dynamics analysis tools for systematic design.

These design approaches significantly enhance motor reliability and efficiency, particularly for continuous-duty feedwater pump applications under high-temperature, high-load, and long-duration operating conditions in power plants.

Technical Features

• High efficiency and energy saving: Advanced electromagnetic optimization reduces motor losses, achieving overall efficiency levels that are among the best in China, meeting the energy-saving requirements of large-scale power plants.

• Mature reduced-resin VPI insulation system: The reduced-resin VPI vacuum-pressure impregnation process produces dense insulation structures with high mechanical strength and thermal endurance, significantly improving reliability under long-term high-load operation.

• High power density and reliability: Compact and rigid motor structure is optimized for high-power, high-speed feedwater pump operation, ensuring safe and stable unit operation.

• Advanced analysis and verification methods: Modern design and simulation tools are applied to comprehensively verify electromagnetic performance, cooling, temperature rise, vibration, and noise, ensuring mature and stable technology.

Product Coverage

• Capacity range: 2,000 kW – 20,000 kW

• Rated voltage: 6 kV, 10 kV

• Center height range: H560 – H1120

• Poles: 2-pole, 4-pole

Industry Application Results

The YXKS / YSKS series feedwater pump motors have been successfully applied in multiple large-scale power plant feedwater pump systems. They operate continuously under high-load conditions with stable performance. Key indicators such as vibration and temperature rise consistently exceed design requirements, earning unanimous recognition from users.

The engineering application of this series has effectively improved the operational efficiency and reliability of feedwater pump systems, providing strong support for power plants to achieve energy savings, improve unit economics, and enhance operational safety. This demonstrates Shanghai Electric’s technological strength and industry leadership in large feedwater pump motors.

Industry Value and Significance

The successful deployment of the YXKS / YSKS series feedwater pump motors further consolidates Shanghai Electric’s core competitive advantage in domestic large-scale thermal power equipment and high-end motor manufacturing. It provides a solid foundation for the independent and controllable supply of critical power equipment in China’s electricity sector.