Method and device for suppressing three-phase current imbalance
The invention discloses a method and device for restraining three-phase current imbalance, and relates to the technical field of permanent magnet synchronous motors. The method comprises the followingsteps: acquiring a current three-phase current value corresponding to the permanent magnet synchrono...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention discloses a method and device for restraining three-phase current imbalance, and relates to the technical field of permanent magnet synchronous motors. The method comprises the followingsteps: acquiring a current three-phase current value corresponding to the permanent magnet synchronous motor, and converting the current three-phase current value into a current direct-axis current calculated value and a current quadrature-axis current calculated value; calculating a direct-axis voltage instruction and a quadrature-axis voltage instruction corresponding to the permanent magnet synchronous motor according to the current direct-axis current calculated value and the current quadrature-axis current calculated value, and calculating a direct-axis voltage compensation amount and aquadrature-axis voltage compensation amount corresponding to the permanent magnet synchronous motor according to the current direct-axis current calculated value and the current quadrature-axis current calculated value; calcul |
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