Three-phase permanent magnet brushless direct current motor guide rail controller

Abstract

A three-phase permanent magnet brushless direct current motor guide rail controller comprises an upper housing, a lower housing, an upper PCB, a lower PCB, a dual-core single chip microcomputer, an input signal conditioning IC and a three-phase power driving tube. A controller circuit is formed by the upper PCB and the lower PCB, a weak current control circuit on the controller is completed through the upper PCB, the power output on the controller is completed through the lower PCB, weak current and strong current are subjected to respective wiring and complete electrical connection through a dual-row 20-core connection pins, and a PCB layering control mode greatly improves the anti-interference capability of the controller. A spring card is pulled outwards when installation to directly buckle an installation groove at the bottom of the lower housing with a guide rail, and the three-phase permanent magnet brushless direct current motor guide rail controller is suitable for installation in a general control cabinet or a control box so as to provide the solution scheme of the three-phase permanent magnet brushless direct current motor guide rail controller with low cost, large-scale production and convenient maintenance.

Description

Technical field [0001] The invention relates to a three-phase permanent magnet brushless DC motor guide rail controller, which is mainly used in many industrial sectors of aerospace aircraft, electric vehicles, industrial robots, flexible manufacturing systems, new medical equipment, automation equipment and textile machinery. Background technique [0002] The well-known three-phase permanent magnet brushless DC motor is one of the motors with the highest power density at present. Because the excitation comes from permanent magnets, it does not need to draw excitation current from the grid like asynchronous motors; because there is no alternating magnetic flux in the rotor , There is neither copper loss nor iron loss on the rotor, so the efficiency is about 10% higher than that of the same capacity asynchronous motor. The motor can be steplessly adjusted, and the working speed range is wide, which can meet the speed requirements under various operating modes; especially The outp...

AI Technical Summary

Problems solved by technology

[0005] 1. The shell of the controller is basically an aluminum profile structure, and the outlet method is basically from the end covers on both sides of the aluminum profile. There are many connecting lines, and there is a lack of necessary marks on the wire ends, which often leads to wiring errors, or due to poor wiring connections. Unnecessary damage to the controller is caused, and the installation process is complicated, so it is not suitable for installation in general electric control cabinets or control boxes

[0006] 2. The weak current part and the strong current part of the controller use the same PCB circuit board, and the electromagnetic interference is serious, resulting in poor reliability. Once damaged, maintenance is particularly difficult

[0007] 3. Most of the power drive tubes adopt a lateral installation structure, the heat dissipation structure is unreasonable, the thermal resistance is too large, and the heat conduction characteristics are poor

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