Single-supply open-coil winding permanent magnet synchronous motor driving system for electric vehicles
A permanent magnet synchronous motor and drive system technology, which is applied in the direction of motor generator control, AC motor control, electronic commutation motor control, etc., can solve the problem of low inverter drive power density, large output voltage harmonics, and drive power level. Low-level problems, achieve the effect of uninterrupted operation, reduction of harmonic content, and increase of output power level
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[0020] The present invention will be described below with reference to the accompanying drawings.
[0021] The single-power open-winding permanent magnet synchronous motor drive system for electric vehicles provided by the present invention separates the neutral points of the stator windings of the three-phase permanent magnet synchronous motor, and connects the six terminal leads to two standard voltage-type two-level inverters respectively. , the system is powered by only one DC power supply, which can realize three-level output. The system not only inherits the advantages of the three-level inverter but also reduces the number of power devices, which can be applied in the drive field with relatively high power requirements such as electric vehicles; the compact design of the single power supply improves the reliability of the device and saves At the same time, only the effective selection of the space voltage vector can achieve the effect of suppressing the common-mode volt...
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