Method for detecting initial position of rotor of static frequency-conversion starting motor of pumped storage power station
A pumped storage power station, the technology of the initial position of the rotor, applied in the direction of the electronic commutator, etc., can solve problems such as research
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[0040] Such as figure 1 Shown is the control flow chart of the present invention, and the method for detecting the initial position of the rotor of the static variable frequency starting motor of the pumped storage power station includes the following steps:
[0041] The first step, judging the initial excitation time of the rotor, whether the initial excitation time of the rotor can be correctly judged is very critical for the initial position detection algorithm proposed by the present invention:
[0042] The motor stator line voltage value sampled by AD, when the maximum value of the three-phase line voltage is greater than 5‰ of the rated voltage of the generator stator for 5ms continuously, the current sampling time is considered as the initial excitation time of the rotor, and enters step B;
[0043] The second step is to perform PARK transformation on the three-phase voltage sampled at each sampling time starting from the initial excitation time of the rotor to obtain t...
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