High-speed polyphase electrically-excitated synchronous linear motor

Abstract

The invention belongs to the field of linear motors, and specifically relates to a high-speed polyphase electrically-excitated synchronous linear motor. A bottom slide carriage is fixed on the bottom of a frame, and a chute is arranged in the bottom slide carriage. A supporting panel is arranged on the top of the frame, and bottom sliding blocks are arranged on the two bottom ends of a rotor body. A shoulder sliding block is arranged on the top of the rotor body, and the terminal of a rotor coil is connected with a rotor brush. Power supply guide rails are arranged on the two sides of the bottom slide carriage, and the rotor brush is slidingly connected with the power supply guide rails. A motor stator is fixed on the frame, and a draw hook is arranged on the top face of the rotor body. Power supply guide rails supply electric excitation for the rotor, the rotor coil employs a hollow iron-core-free coil, and the rotor body is made of engineering plastics. The mass of the entire motor rotor portion is small, and the motor rotor portion is easy to control. The stator employs a bi-lateral structure, and the operation is more stable. The motor employs coil excitation, only the excitation voltage and current have to be adjusted, thereby making the adjustment of motor operation states more convenient, and controlling more flexible and easier.

Description

technical field [0001] The invention belongs to the field of linear motors, in particular to a high-speed multi-phase electric excitation synchronous linear motor. Background technique [0002] Linear motion is often required in production practice, and commonly used rotating motors need to undergo motion conversion to obtain linear motion. Linear motor is a motor that can directly obtain linear motion. Compared with commonly used rotary motors that obtain linear motion through motion conversion, linear motors are directly driven, and it is easier to obtain higher speeds. Because there is no transmission system, the loss is smaller and the control is more efficient. accurate. [0003] Currently commonly used linear motors, especially for high-thrust applications, often use three-phase permanent magnet synchronous linear motors. The long stator of this linear motor uses three-phase AC windings, the mover uses permanent magnets, and the control method is similar to that of t...

AI Technical Summary

Problems solved by technology

When high power is required, the magnitude of the three-phase stator current will be limited by the capacity of the power device of the converter, and the magnetic field of the mover will also be limited by the magnetic field strength of the permanent magnet

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