GaN power device-based super high speed spindle controller

Abstract

The invention relates to a GaN power device-based super high speed spindle controller, which comprises a first AC / DC power conversion circuit, a bus brake circuit, a second AC / DC power conversion circuit, a power control module and a main control module, wherein the first AC / DC power conversion circuit and the second AC / DC power conversion circuit convert external input AC to DC of a DC power partand a DC 24V control part; the DC of the DC 24V control part is inputted to the main control module; the DC of the DC power part passes through the bus brake circuit and is then inputted to the powercontrol module; the power control module and the main control module perform information interaction; and the working state of the high speed spindle of the motor is controlled by the power control module. The switching frequency of an inverter is improved, the purpose of single period control is realized, and the stability of the whole system is further improved.

Description

technical field [0001] The present invention relates to a high-speed spindle controller, in particular to an ultra-high-speed spindle controller (an ultra-high-speed spindle motor whose rotation speed is higher than 60,000 revolutions per minute (rpm)) based on a GaN power device. Background technique [0002] In the current high-speed spindle controller (spindle motor with a speed higher than 10,000 revolutions per minute (rpm)), the inverter part uses traditional power devices such as IGBT or MosFET, which makes the switching frequency of the inverter part low. When outputting a higher fundamental frequency, the carrier ratio of the inverter output is also lower, resulting in poor fundamental current output by the spindle controller when working with a high-speed spindle, which directly affects the temperature, vibration, and vibration of the spindle motor. accuracy and noise. And with the increase of the switching frequency, the power loss of the device in the high-speed...

AI Technical Summary

Problems solved by technology

This traditional topology is not only more complicated in hardware design and development, but also has high hardware cost, and it is extremely troublesome in system debugging. The main bottleneck is that ARM, DSP, and FPGA need a bus to communicate with each other. Routing on the PCB, in order to ensure the timing convergence of the bus, the communication rate is generally slow, and when the industrial site is more complex, it is easy to cause data transmission errors due to interference, thus affecting the stability of the entire system

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