Adaptive fault-tolerant control algorithm for inverter torque ripple
Aiming at the shortcomings of traditional PCB control algorithm and reduce control algorithm, such as poor fault tolerance and uncontrollable change of adaptive parameters, an adaptive fault-tolerant control algorithm based on inverter torque ripple is designed. Control the voltage space change, master the specific output waveform of torque ripple, get the optimal PWM suppression factor by calculating the peak and valley floating trend, and determine the suppression effect of inverter torque ripple. On this basis, Lyapunov stability theory is introduced to determine the application range of adaptive reference system. By calculating the fault-tolerant factor of the interval, the basic control flow is improved, and the adaptive fault-tolerant control algorithm based on the torque ripple of the inverter is realized. The experimental results show that the fault-tolerant ability of the control algorithm is improved by about 20% when the adaptive parameters are always in the controllable range.
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Keywords
inverter, torque ripple, vector modulation, output waveform, inhibitory factor, adaptive reference system, a fault-tolerance factorAuthors
| Name | Organization | |
| Xiushan Liu | College of Electronics and Information, Guangdong Polytechnic Normal University | lxsdz@163.com |
| Qin Zhang | College of Electronics and Information, Guangdong Polytechnic Normal University | ivy_1118@163.com |
| Jun Cheng | College of Electronics and Information, Guangdong Polytechnic Normal University | mrchengjunjun@foxmail.com |
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