Brushless excitation motor

High-Performance Brushless Excitation Motor for Industrial Applications 

When your operations demand zero-compromise reliability, the Brushless excitation motor from Tellhow Shenyang Electric Machine delivers enterprise-grade performance. Our motors don't have any moving contacts because they have built-in AC exciter systems with spinning rectifier bridges. If you set the voltage to 3kV or 11kV and the power to 400 kW, these motors can start with 1.7 kW of torque and pull out with 2.0 kW of torque at rated conditions. Our factory can make frames from 1730 to 4250 mm wide and at speeds between 100 and 300 r/min. Each year, it can produce 8 million kW of power, which is backed by over 2,100 specs for 49 product lines.

Why Choose Our Brushless Excitation Technology

Spark-Free Operation for Hazardous Zones

Your needs for safety come first. Our brushless system gets rid of both carbon brushes and slip rings for good. In powerful atmospheres, this means there is no chance of sparking. It works great in places like petrochemical plants, mines, and dusty cement mills where regular motors could catch fire.

Minimal Maintenance, Maximum Uptime

You'll really like how much less upkeep you have to do. There are no new brushes. New surface for the no-slip ring. There is no carbon dust pollution. This means that your building will need fewer shutdowns and have lower running costs over its entire life.

Superior Starting Performance

High starting torque ensures your heavy machinery launches smoothly. Our Brushless excitation motor deliver consistent performance whether you're driving ball mills, crushers, or kilns. The adjustable power factor gives you control over electrical efficiency in varying load conditions.

Built for Continuous Duty

These motors work all the time and never complain. Your tools and workers will be safer if there is little noise and shaking. Better heat escape makes parts last a lot longer than with standard designs.

Technical Specifications

Where Our Motors Excel

Mining & Mineral Processing

Ball mills and crushers demand robust starting power. Our Brushless excitation motor solutions handle the extreme loads and dusty conditions typical of mining operations. The spark-free design ensures compliance with underground safety regulations.

Cement Production

Kiln and mill drives need to work all the time with little downtime. Longer service times and steady performance in harsh, high-temperature settings will help you.

Power Generation

Our motors work perfectly with extra drive systems for fans, pumps, and compressors. Stable voltage and frequency control make sure that the power exchange works well with the grid.

Metallurgical Applications

Motors that can handle heat and mechanical shock are needed in heavy industry for everything from rolling mills to slag crushers. Our strong structure and cutting-edge cooling systems give you the endurance you need.

Engineering Excellence You Can Trust

Proven Manufacturing Capability

Tellhow Shenyang Electric Machine has a listed capital of 500 million RMB and works on an area of 190,000 square meters. Our factory makes motors with shaft heights ranging from 355 mm to 1,250 mm for use in mining, environmental protection, and other fields.

Precision Manufacturing Process

Tight component limits are made possible by high-precision manufacturing methods. Our own magnetic circuit designs and control methods make our motors 15% to 20% more energy efficient than regular motors. Before it is shipped, every unit goes through a lot of tests.

Global Compliance

Our motors meet international safety and efficiency standards including EU CE, IEC, GB, and various regional certifications. This ensures your equipment complies with local regulations wherever you operate.

Customization Flexibility

Need specific voltage grades? Custom mounting configurations? Special cooling requirements? Our ODM/OEM capabilities allow tailored solutions matching your exact specifications. We handle both large-scale orders and specialized small-batch production.

Frequently Asked Questions

Q: What makes brushless excitation different from traditional systems?

A: The product uses a shaft-mounted AC exciter with rotating rectifiers instead of carbon brushes and slip rings. This eliminates wear components, reduces maintenance, and prevents sparking in hazardous environments.

Q: Can these motors operate in explosive atmospheres?

A: Absolutely. The absence of brushes means no electric sparks during operation. Combined with appropriate protection grades (IP54, IP55), they're ideal for petrochemical facilities, grain elevators, and mining applications with explosive dust or gas.

Q: What's the typical service life compared to brushed motors?

A: You can expect significantly longer operational life. Without brushes to replace or slip rings to resurface, major maintenance intervals extend considerably. The rotating rectifier assembly typically outlasts traditional brush systems by several multiples.

Q: How do I choose between drilled and non-drilled shaft configurations?

A: Non-drilled shaft motors offer higher starting ability with a 1.7 starting torque ratio. Drilled shaft versions accommodate air clutches for applications requiring mechanical disconnection, though starting torque reduces to 0.6. Your application's starting load determines the best choice.

Q: What starting methods work with these motors?

A: You have flexibility. Full voltage direct-on-line starting works for many applications. For larger motors or installations with limited supply capacity, soft starters or reduced voltage methods are compatible. Our technical team can help you specify the optimal approach.

Q: How does the adjustable power factor benefit my operation?

A: Adjustable power factor lets you optimize electrical efficiency based on load conditions. This reduces reactive power penalties from utilities and improves overall plant power quality. It's particularly valuable in facilities with varying load profiles.

Q: What maintenance should I plan for?

A: Routine maintenance focuses on bearing lubrication, cooling system inspection, and periodic electrical testing. Unlike brushed motors, you won't schedule regular brush replacement or slip ring maintenance. Most users report 50–70% reduction in maintenance hours.

Q: Are replacement parts readily available?

A: Yes. Tellhow Shenyang maintains comprehensive spare parts inventory and provides global technical support. Our service network ensures timely delivery of components and technical assistance when you need it.

Your Partner in Industrial Motor Solutions

Contact us today at  sxmotor@yeah.net to discuss your specific requirements for Brushless excitation motor.