In order to improve the vibration characteristics of the electronic water pump, a radial electromagnetic force distribution model is established. The mechanism of the impact of harmonic currents on the vibration characteristics of the electronic water pump is studied. By using the harmonic voltage compensation method, a new synchronous rotating coordinate system is established in the control system of the electronic water pump. A PI controller is used to achieve tracking control of specific-order harmonic currents and output harmonic compensation voltages, thus suppressing specific-order harmonic currents. Experimental results show that the suppression effect of this method on harmonic currents can reach up to 83%, and the suppression effect on the vibration acceleration at the corresponding frequency can reach up to 75%.
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Xv et al. (2024) studied this question.
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