Disturbance observer-based aviation three-stage variable frequency alternating current power generation system voltage stability control method
A technology of disturbance observer and power generation system, which is applied to control generators, control systems, and generators through magnetic field changes. It can solve the problems of delay in calculation amount and unsatisfactory compensation effect, and achieve high steady-state accuracy and small delay. , the effect of improving the response speed
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Embodiment 1
[0031] In the case of different frequencies and different loads, the voltage regulation system of the generator is unstable, and a proportional-integral controller is added to the system to improve the stability of the system. The controller realizes the stable control of the voltage through quick response by receiving the analog signal when the starter generator is working. The input signal of the controller in the present invention is the effective value obtained by instantaneous calculation of the three-phase voltage, and the reference value is the voltage regulation point of the effective value of the three-phase voltage. After the error is obtained, the system adjustment value is obtained through the proportional integral controller, which is input into the controlled object to realize the control of the power generation state of the generator.
[0032] The disturbance observer can effectively estimate and compensate lumped disturbances, including model uncertainty, param...
Embodiment 2
[0044] The three stages of the three-stage frequency conversion AC power generation system are the permanent magnet machine, the exciter and the main generator; PWM is used to adjust the excitation current of the excitation circuit to realize the regulation of the generator voltage;
[0045] The voltage regulation method is to detect that the input signal is the effective value Ut calculated by the instantaneous value of the three-phase voltage at the load end, and set the reference value as the three-phase voltage effective value voltage regulation point U0; after calculating the error between Ut and U0, input it into the ratio Integral controller to obtain the first adjustment value of the system;
[0046] The input value of the disturbance observer is the instantaneous value of the three-phase voltage at the load end and the first adjustment amount of the above system, and the value of the second adjustment amount obtained by inversely transforming the nominal function under...
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