Multi-loop voltage regulation control method for three-stage brushless synchronous motor
A technology of synchronous motor and control method, which is applied in the direction of synchronous generator control, control system, and control generator, and can solve the problems of increasing the weight of the generator controller, complex structure of the generator controller, and poor dynamic characteristics.
Active Publication Date: 2020-04-17
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF7 Cites 5 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Compared with the constant frequency power generation system, the aircraft frequency conversion AC power generation system is simple in structure, safe and reliable, but it also brings many problems to the digital voltage regulation: one is the poor dynamic characteristics of the permanent magnet generator when switching high-power loads in a wide speed range The other problem is that the higher the speed, the higher the output voltage of the permanent magnet generator, and the smaller the excitation current of the AC exciter required under the same load at this time, so the traditional fixed PI parameters are difficult to meet the requirements of maintaining the forward channel of the voltage regulation system open-loop gain to maintain system stability
However, it is necessary to add an additional DC-DC converter, which will complicate the structure of the generator controller and increase the weight of the generator controller, which is not suitable for aircraft with high weight limit requirements.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0038] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Hereinafter, embodiments of the present invention will be described in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention. Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refe...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The embodiment of the invention discloses a multi-loop voltage regulation control method for a three-stage brushless synchronous motor, relates to the technical field of synchronous motors, and realizes that the motor does not need to be accurately modeled and an additional DC-DC converter is not needed. The method comprises the following steps: updating Kp value initial gain of a fuzzy PI controller of a voltage loop by utilizing the rotating speed signal of a three-stage brushless synchronous motor; using the sum of the current signal outputted by the fuzzy PI controller and the current signal fed forward by the load current as the reference value of the excitation current loop, and then obtaining the error of the excitation current of the alternating-current exciter; inputting the errorinto the PI controller of the excitation current loop, and outputing a PWM signal in a digital generator controller (GCU) to control on or off of the MOSFET in the excitation power circuit of the three-stage brushless synchronous motor so that the magnitude of excitation current of the alternating-current exciter is controlled, and voltage stability is maintained. The method is applicable to theaircraft variable-frequency alternating-current power generation system.
Description
technical field [0001] The invention relates to the technical field of synchronous motors, in particular to a multi-ring voltage regulation control method for a three-stage brushless synchronous motor. Background technique [0002] The three-stage brushless synchronous motor is composed of a permanent magnet generator, an AC exciter, a rotating rectifier and a main motor. Compared with the traditional brushed motor, brushes and slip rings are eliminated, and the structure is safer and more reliable. It is the current aircraft frequency conversion AC motor. The most widely used main generator in the power generation system. Compared with the constant frequency power generation system, the aircraft frequency conversion AC power generation system is simple in structure, safe and reliable, but it also brings many problems to the digital voltage regulation: one is the poor dynamic characteristics of the permanent magnet generator when switching high-power loads in a wide speed ra...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & AuthorityApplications(China)
IPC IPC(8): H02P9/30H02P101/30H02P103/20
CPCH02P9/305H02P2101/30H02P2103/20
Inventor张卓然范晓东李进才韩建斌陆嘉伟
OwnerNANJING UNIV OF AERONAUTICS & ASTRONAUTICS