Harmonic injection-based noise control method of new energy automobile permanent-magnet synchronous motor
A technology for permanent magnet synchronous motors and new energy vehicles, which is applied in the direction of motor generator control, electronically commutated motor control, control systems, etc., and can solve the problem of ineffective noise control of permanent magnet synchronous motors and the lack of noise control methods and means and other issues, to achieve the effect of convenient control and operation
Active Publication Date: 2019-09-13
BEIJING INSTITUTE OF TECHNOLOGYGY +2
View PDF5 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
At present, the noise control effect of permanent magnet synchronous motors is not effective. The main reason is that motor manufacturers and automobile manufacturers have not adopted appropriate noise control methods and means, and have not taken effective control of the main sound source of motors - electromagnetic noise measure
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
[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.
[0020] The theoretical method is used to derive the analytical expression of the electromagnetic excitation force wave of the permanent magnet synchronous motor, as shown in formula (7):
[0021]
[0022] In formula (7): F r (θ,t) is the electromagnetic excitation force; μ 0 is air permeability; C μ is the magnetomotive force amplitude; Λ 0 is a constant component of the permeability function; Λ k is the harmonic component of the permeability function; μ is the order of time harmonics; ν is the order of space harmonics; p is the number of pole pairs of the motor; ω is the angular frequency of motor rotation; t is time; Z is the number of stator slots; θ...
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 provides a harmonic injection-based noise control method of a new energy automobile permanent-magnet synchronous motor. The harmonic injection-based noise control method comprises the steps of (1) building a motor control system equivalent model to obtain a three-phase current output from the equivalent model; (2) extracting amplitude and phases which are corresponding to previous eight harmonic constituents with maximum amplitude with regard to each phase current; and (3) building a current fitting function according to the amplitude and phase extracted in the step (2), and feeding back the current fitting function to current excitation of the synchronous motor. By building the current fitting function and injecting the current fitting function to the current excitation, theelectromagnetic noise of the motor can be effectively controlled from a noise source, and the harmonic injection-based noise control method has effect that vibration noise control operation is convenient, rapid, simple and correct.
Description
technical field [0001] The invention belongs to the technical field of new energy vehicles, in particular to a method for controlling noise of a new energy vehicle motor based on harmonic injection. Background technique [0002] The noise generated by the new energy vehicle motor during operation is the superposition of aerodynamic noise, electromagnetic noise and mechanical noise, of which electromagnetic noise energy accounts for a large part of it. At present, the noise control effect of permanent magnet synchronous motors is not effective. The main reason is that motor manufacturers and automobile manufacturers have not adopted appropriate noise control methods and means, and have not taken effective control of the main sound source of motors - electromagnetic noise measure. Contents of the invention [0003] The purpose of the present invention is to overcome the defects of the prior art, in order to effectively control the electromagnetic noise of the motor from the...
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): H02P21/05
CPCH02P21/05
Inventor 李惠彬李耀健曹诚张炟严小俊胡冬枚胡志宏宋志环
Owner BEIJING INSTITUTE OF TECHNOLOGYGY