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Method and device for controlling stator flux trajectory of AC motor

A technology of stator flux linkage and AC motor, which is used in motor generator control, control of electromechanical transmission, electronic commutation motor control, etc. High sampling rate requirements and the effect of eliminating tracking errors

Active Publication Date: 2022-05-13
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the purpose of one or more embodiments of this specification is to propose a method and device, electronic equipment, and storage medium for controlling the stator flux trajectory of an AC motor, so as to solve the problem of sampling problems that exist in controlling the stator flux trajectory in the related art. Technical issues such as high rate requirements and large amount of calculation

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  • Method and device for controlling stator flux trajectory of AC motor
  • Method and device for controlling stator flux trajectory of AC motor
  • Method and device for controlling stator flux trajectory of AC motor

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Embodiment 1

[0036] The method embodiment provided in Embodiment 1 of the present invention may be executed in a computer, a terminal, or a similar computing device. Take running on the terminal as an example, figure 1 It is a hardware structural block diagram of a mobile terminal applied to a method for controlling the stator flux trajectory of an AC motor provided by an embodiment of the present invention. Such as figure 1 As shown, the terminal can include one or more ( figure 1 Only one is shown in the figure) processor 102 (processor 102 may include but not limited to processing devices such as microprocessor MCU or programmable logic device FPGA) and memory 104 for storing data. Optionally, the above-mentioned terminal can also be A transmission device 106 for communication functions and an input and output device 108 are included. Those of ordinary skill in the art can understand that, figure 1 The shown structure is only for illustration, and does not limit the structure of the...

Embodiment 2

[0084] In one or more embodiments of the present specification, a device for controlling the stator flux trajectory of an AC motor is also provided, which is used to implement the above embodiments and preferred implementation manners, and those that have already been described will not be repeated. As used below, the term "module" may be a combination of software and / or hardware that realizes a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.

[0085] One or more embodiments of this specification provide a control device for a stator flux trajectory of an AC motor, Figure 8 It is a structural block diagram of the control device of the stator flux trajectory of the AC motor in one or more embodiments of the present specification, and the device includes: a division module 80, which is used to divi...

Embodiment 3

[0095] Figure 9 A schematic diagram of a more specific hardware structure of an electronic device provided by this embodiment is shown, and the device may include: a processor 1010 , a memory 1020 , an input / output interface 1030 , a communication interface 1040 and a bus 1050 . The processor 1010 , the memory 1020 , the input / output interface 1030 and the communication interface 1040 are connected to each other within the device through the bus 1050 .

[0096] The processor 1010 may be implemented by a general-purpose CPU (Central Processing Unit, central processing unit), a microprocessor, an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), or one or more integrated circuits, and is used to execute related programs to realize the technical solutions provided by the embodiments of this specification.

[0097] The memory 1020 may be implemented in the form of ROM (Read Only Memory, read only memory), RAM (Random Access Memory, random a...

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Abstract

One or more embodiments of this specification provide a method and device for controlling the stator flux trajectory of an AC motor. The method includes: dividing the fundamental cycle of the output voltage of the inverter of the AC motor into multiple control cycles, wherein , the multiple control cycles correspond to multiple time steps, denoted as T 1 , T 2 ...T N , wherein, N is a positive natural number; determine the reference value of the stator flux trajectory corresponding to the current time step and the estimated value of the stator flux linkage; based on the error control between the estimated value of the stator flux linkage and the reference value of the stator flux linkage trajectory The trajectory of the stator flux linkage. The present invention solves the technical problems of controlling the stator flux trajectory in the related art that require a high sampling rate and a large amount of calculation.

Description

technical field [0001] One or more embodiments of this specification relate to the technical field of AC motor control, and in particular to a method and device for controlling a stator flux trajectory of an AC motor. Background technique [0002] In related technologies, the drive inverters in high-power and high-speed AC motor drive systems mostly work in low-carrier ratio operating conditions, and achieve high dynamic torque response under low-carrier ratio operating conditions while obtaining excellent steady-state performance. It is a technical difficulty in the field of AC motor control. Traditional space vector pulse width modulation and sinusoidal pulse width modulation have large harmonic content under the constraint of low carrier ratio, so the modulation method usually adopts synchronous optimized pulse width modulation. [0003] At present, it is still difficult to solve the real-time solution of synchronous optimized pulse width modulation in embedded processor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/14H02P21/28
CPCH02P21/141H02P21/28
Inventor 杨海涛张永昌
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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