Optimal dynamic PI parameter setting method for magnetic and voltage regulating direct-current generator system
A DC generator and parameter tuning technology, which is applied to control generators, control generators, and control systems through magnetic field changes, and can solve problems such as the influence of dynamic characteristics of output voltage, multiple adjustments, and ripples.
Pending Publication Date: 2022-02-25
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
It solves the problem that the dynamic characteristics of the output voltage of the existing generator based on capacitor energy control are affected by the fixed parameters of the outer loop, and there are multiple adjustment processes; the optimal dynamic performance can be achieved without algorithm switching, and the problem between different algorithms is solved. Ripple issues caused by switching
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[0070] The present invention will be further described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0071] This embodiment first provides a hybrid excitation power generation system including a hybrid excitation generator, an excitation current control module, a three-phase diode uncontrolled rectifier circuit, and a load terminal. The specific hardware structure is as follows figure 1 As shown, the three-phase diode uncontrolled rectification circuit includes 3 parallel bridge arms, and each bridge arm includes 2 series diodes. The middle points of the three bridge arms are respectively connected to one section of the three-phase armature winding of the hybrid...
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The invention discloses an optimal dynamic PI parameter setting method for a magnetic and voltage regulating direct-current generator system, which comprises the following steps of: recording the values of exciting currents corresponding to different load currents under the condition of different rotating speeds of a hybrid excitation generator, and fitting a function relationship among the exciting currents, the load currents and the rotating speeds through a least square method; obtaining a time function relationship of an ideal optimal output voltage curve under the condition that a load current suddenly changes from IO1 to IO3 based on the state equation of the load end output capacitor voltage, and finally solving a corresponding optimal dynamic PI parameter for the suddenly changes of a specific load current under any rotating speed n from IO1 to IO3 based on the fitting function relationship in the S1. The problems that a single outer ring PI parameter of an existing magnetic and voltage regulating direct-current generator system cannot meet dynamic characteristics under different load abrupt changes, and the voltage recovery process is slow are solved; and meanwhile, algorithm switching does not exist, the optimal dynamic performance can be realized, and the ripple problem caused by switching among different algorithms is solved.
Description
technical field [0001] The invention relates to the technical field of motor control, and mainly relates to an optimal dynamic PI parameter setting method for a magneto-regulating and voltage-regulating DC generator system. Background technique [0002] The field-adjusting and voltage-regulating DC generators include electric excitation and hybrid excitation generators. The excitation field of this type of motor is adjustable, and it is easy to realize fault de-excitation. It can output stable voltage in a wide speed range and is suitable for airborne or vehicle-mounted DC. in the power generation system. [0003] The main control idea of the DC power generation system based on magnetic regulation and voltage regulation is as follows: the given value of the output voltage is compared with the measured value of the voltage sensor, and the difference is passed through the PI regulator to obtain the given value of the excitation current, and then the single-phase full-bridge ...
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Login to View More IPC IPC(8): H02P9/10H02P9/30
CPCH02P9/105H02P9/30
Inventor 王宇夏宇航周浩宇张成糕
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS