Space vector based control method for five-phase dual-rotor permanent magnet synchronous motor
A permanent magnet synchronous motor and space vector technology, applied in the direction of electronically commutated motor control, motor control, vector control system, etc., can solve problems such as difficult to achieve real-time control, unstable switching tube frequency, large high-order harmonics, etc. Achieve the effects of easy online implementation, small fluctuations, and high energy utilization
Active Publication Date: 2016-10-12
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF4 Cites 10 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
This method relies on the accuracy of motor modeling, and it is difficult to achieve real-time control in engineering practice, and the current is controlled in a hysteresis mode, which can easily lead to unstable frequency of the switching tube and cause large high-order harmonics
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
[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, 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.
[0054] The object of the present invention is to provide a five-phase dual-rotor permanent magnet synchronous motor control method based on space vector.
[0055] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0056] Fig. 1 (a) is a schematic diagram of the next phase ...
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 invention discloses a space vector based control method for a five-phase dual-rotor permanent magnet synchronous motor. The control method comprises the steps of measuring the rotary speed and the output phase current of the motor; calculating two voltage components of the target voltage vector under a static coordinate system according to the rotary speed and the output phase current of the motor, wherein the target voltage vector is the voltage vector which is disappeared from the output voltage after one-phase open-circuit fault of the motor occurs; determining the section regions of the target voltage vector according to the two voltage components; determining non-disappeared voltage vectors, and dividing the non-disappeared voltage vectors into large vectors, intermediate vectors and small vectors according to the magnitudes of the amplitude values; screening qualified voltage vectors from the non-disappeared voltage vectors; and synthesizing the target voltage vector by the qualified voltage vectors and the zero voltage. The control method provided by the invention gets rid of dependence on the accuracy of motor modeling and reduces interference from high-order harmonics; and meanwhile, the control method has the advantages of smooth and flexible control and high response speed.
Description
technical field [0001] The invention relates to the field of motor fault-tolerant control, in particular to a control method for a five-phase dual-rotor permanent magnet synchronous motor based on space vectors. Background technique [0002] In synchronous motor installations, the mechanisms most prone to failure are sensors, actuator mechanisms and motor windings. According to statistics, in the speed drive system, 38% of the faults are related to the converter. Among the 38% of the faults, the most common fault is one-phase open circuit fault, including: one-phase switch tube open circuit, phase bridge arm open circuit, one-phase switch tube short circuit and phase bridge arm short circuit. [0003] In the current academic literature and engineering practice, for the open-circuit fault of one phase of the five-phase motor, the method of directly calculating the input current of each phase is mostly used. This method relies on the accuracy of motor modeling, and it is dif...
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 IPC IPC(8): H02P21/24H02P29/028
Inventor 赵静关兴高旭刘向东
Owner BEIJING INSTITUTE OF TECHNOLOGYGY