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TBPKS Series Large Variable Frequency and Speed Control Synchronous Motor
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  • TBPKS Series Large Variable Frequency and Speed Control Synchronous Motor

Technical Overview

 

Variable frequency speed control, recognized as one of the most promising AC speed control methods, is being increasingly adopted across a variety of fields. Through the control of variable frequency and variable voltage on the primary side of the AC motor via a frequency converter, a constant torque characteristic is ensured below the base speed, and a constant power characteristic is maintained above the base speed. The TBPKS series large variable frequency speed regulation synchronous motorand a frequency converter together form an AC variable frequency speed control systemthat offers stepless speed controland energy-efficient operation. When paired with high-precision sensors, it can achieve highly accurate automated control. This motor series is distinguished by its high efficiency, low noise and vibration, wide speed regulation range, smooth operation, and strong overload capacity.

 

Applicable Scope

The motor is widely used in metallurgy, mining, oilfields, ports, shipping, papermaking, water supply and specialized test equipment.

  • General-purpose variable-frequency synchronous motor
    Designed for variable-speed operation to save energy, it is mainly applied to fans, pumps and similar loads, normally rated for continuous duty (S1).

  • Variable-frequency synchronous motor for hoists and cyclic loads
    Intended for converter-fed drives with continuously varying speed, rated for periodic duty (S8).

  • Variable-frequency synchronous motor for metal rolling mills
    Primarily drives rolling mills in unidirectional mode; bidirectional operation can be provided on request.

 

Structural Description

 

This series of motors is a salient pole synchronous motor with an enclosed air-to-water cooler. It features a cooling method of IC86W and a protection level of IP44 or IP54. The motor comprises key components including the stator, rotor, bearings, collector ring (slip ring), and cooler.
The stator features an axial insertion structure. Its windings utilize a Class F insulation system specifically designed for variable-frequency motors , with reliable end fixation and binding. During manufacturing, inter-turn and ground withstand voltage tests are conducted at various stages. The Vacuum Pressure Impregnation (VPI) process using solvent-free varnish bonds the stator coils and core into a solid unit, ensuring excellent insulation performance, high mechanical strength, and robust protection.
The rotor winding comprises magnetic pole coils. Each coil is fabricated from welded flat copper wires. After the coils are inserted into the core, the entire rotor assembly undergoes the VPI process. Support components are installed between the poles, and the pole body is connected to the rotor shaft via dovetail or T-tail connections. The motor includes a complete damper winding .
The motor uses sliding bearings (typically in an end-cover bearing structure) or optionally a pedestal bearing structure. Both designs incorporate spherical self-aligning functionality. A rolling bearing structure with an end cover is also an option. Both front and rear bearings are insulated, and a grounding brush is installed at the shaft extension end. The motor is generally not designed to withstand significant external axial forces, with an allowable axial movement range typically between +0.5mm and ±2mm.
The air-water cooler is equipped with a built-in fan that circulates air internally within the motor. Air enters the frame from both ends, promoting uniform cooling and temperature distribution throughout the motor. This ensures consistent thermal deformation across components and adequate internal airflow under all operating conditions.

 

Keywords:XEMC

TBPKS Series Large Variable Frequency and Speed Control Synchronous Motor
+
  • TBPKS Series Large Variable Frequency and Speed Control Synchronous Motor

TBPKS Series Large Variable Frequency and Speed Control Synchronous Motor

·Advanced VFD: Stepless speed control; constant torque below base speed, constant power above—high energy savings.
·High efficiency & low noise: High efficiency, low noise, minimal vibration, smooth operation.
·Strong overload: Robust overload capability for heavy-load shocks.
·Precision control: With high-accuracy sensors for high-dynamic, fully automated control.

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E-mail:xdzhny@xemc.com.cn

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Technical research and innovation capability

WHY CHOOSE US

Technical research and innovation capability

XEMC is the enterprise in China that promotes the most efficient motor models and has the widest coverage. Since 2010, its promotion volume has consistently ranked first in the industry. The "ultra green" series of motor products developed by it have a motor efficiency of 96.91% and key technical indicators reaching the international leading level.

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