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Alternating-current rotary machine controller

一种旋转电机、控制装置的技术，应用在交流电动机控制、交流电动机角单轴角速度控制、电动机控制等方向，能够解决不能较高地保持速度控制应答转矩控制应答应答性等问题，达到提高误差收敛性的效果

Active Publication Date: 2012-02-29
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if the estimated response of the phase generator is slow in the low frequency range, there is a problem that the responsiveness of the speed control response, torque control response, etc. cannot be kept high in the low speed range.

Method used

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  • Alternating-current rotary machine controller
  • Alternating-current rotary machine controller
  • Alternating-current rotary machine controller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0050] figure 1 It is a figure which shows the whole structure diagram in this Embodiment 1. In the drawing, a voltage applying unit 1 applies a voltage to an AC rotating electrical machine 2 according to a voltage command vector Vsref. In Embodiment 1, a synchronous machine was described as an example of the AC rotating electrical machine 2 , but an induction machine can also be configured based on the same principle.

[0051] The current vector detection unit 3 detects the current vector of the AC rotating electric machine 2 and outputs it as a detected current vector Is. The AC rotating electric machine control unit 4 outputs a voltage command vector Vsref to the voltage applying unit 1 so that the detected current vector Is obtained from the current vector detection unit 3 coincides with the current command vector Isref. The rotational position detection unit 5 detects the rotational position of the AC rotating electrical machine 2 and outputs it to the magnetic flux vec...

Embodiment approach 2

[0122] In the control device for the AC rotating electrical machine according to Embodiment 1, the magnetic flux vector detection unit 6 outputs the detected magnetic flux vector Phi based on the rotational position detected by the rotational position detecting unit 5, but when the AC rotating electrical machine 2 exists as a significant In the case of the well-known rotational position dependence of the inductance, the magnetic flux vector Phi can also be detected by the magnetic flux vector detection unit 6 a based on the high-frequency current vector Ish obtained by the current vector detection unit 3 a.

[0123] Figure 11 It is a figure which shows the structure of the control apparatus of the AC rotating electric machine in this Embodiment 2. In the figure, marked with figure 1 Parts with the same sign as figure 1 Since they are the same or equivalent, descriptions of each are omitted.

[0124] The current vector detecting unit 3 a includes a current component divider...

Embodiment approach 3

[0141] In the previous Embodiment 2, the adaptive observation unit 7 was configured on the orthogonal stationary two-axis coordinate (a-b axis), but the adaptive observation unit 7 may also be configured on the rotating two-axis coordinate ( d-q axis). Of course, the system configured on the two-axis coordinates of rotation (d-q axis) can also be applied to the previous first embodiment.

[0142] Figure 16 It is a diagram showing the overall configuration of a control device for an AC rotating electric machine in Embodiment 3, and parts denoted by the same reference numerals as those in Embodiment 2 are the same as or correspond to Embodiment 2. The current vector detection unit 3b includes a current component divider 60 and a coordinate converter 81, and outputs the detected current vector Is on the coordinates of the two rotation axes. The coordinate converter 81 converts the detected current vector Is on the a-b axis obtained from the current component distributor 60 int...

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Abstract

The objective is to obtain an alternating-current rotary machine controller that is capable of achieving smooth driving from a low-speed area, including zero speed, to a high-speed area while attaining a desired characteristic, even in the event of an error in the default value, by promptly converging the error. To this end, the components are an adaptive observation means (7) that outputs an estimated flux phase (Theta 0), an estimated current vector (Isest), an estimated flux vector (Phest), and an estimated speed (wr0) based on a voltage command vector (Vsref), a current deviation vector (Delta Is), and an amplified deviation vector (E0), a deviation vector operation means (8) that computes the current deviation vector (Delta Is) between the estimated current vector (Isest) and a detected current vector (Is) from a current vector detection means (3) and a flux deviation vector (Delta Phi) between the estimated flux vector (Phest) and a detected flux vector (Phi) from a flux vector detection means (6), and a deviation amplification means (9) that amplifies the current deviation vector (Delta Is) and the flux deviation vector (Delta Phi) in order to output the amplified deviation vector (E0).

Description

technical field [0001] The invention relates to a device for driving and controlling an AC rotating electrical machine by applying an AC voltage through a voltage applying unit. Background technique [0002] Various methods for controlling AC rotating electrical machines such as synchronous machines and induction machines are well known. If it is limited to a low-speed range, it is generally possible to drive under a low-cost control system using a low-response but inexpensive position sensor. Since the output cycle of the Hall sensor is slow in the low-speed range, even if it is a position sensor with a low response, the low response is not obvious, so it can be driven. [0003] On the other hand, if a low-response position sensor is used in a high-rotation area, current cannot be supplied in a desired phase due to its sluggishness, and the driving characteristics of an AC rotating electrical machine deteriorate. In addition, if control is performed by superimposing volta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/00H02P27/04H02P21/14H02P21/18H02P21/22H02P21/24H02P23/07H02P23/12H02P23/14H02P23/16H02P25/022H02P25/026
CPCH02P21/0003H02P29/032H02P21/00H02P27/04
Inventor 金原义彦伊藤正人谷本政则
Owner MITSUBISHI ELECTRIC CORP
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