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Field control device, field control method, and synchronous rotary machine using same

A technology of synchronous rotation and excitation control, which is applied in the model/simulation of control purposes, control of generators through magnetic field changes, control systems, etc., and can solve problems such as difficult manufacturing factories and implementation of load tests

Active Publication Date: 2015-12-09
TOSHIBA MITSUBISHI-ELECTRIC IND SYST CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to this limitation, in reality, it is difficult to carry out actual load tests in manufacturing plants in many cases.

Method used

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  • Field control device, field control method, and synchronous rotary machine using same
  • Field control device, field control method, and synchronous rotary machine using same
  • Field control device, field control method, and synchronous rotary machine using same

Examples

Experimental program
Comparison scheme
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Embodiment approach 1

[0031] figure 1 It is a block diagram showing the structure of the synchronous rotating machine of Embodiment 1. The synchronous rotating machine 500 has a rotating machine main body 450 and an excitation control device 400 . The details of the structure of the synchronous rotating device 500 will be described later.

[0032] figure 2 It is a schematic quarter partial transverse cross-sectional view of the rotary device main body of the synchronous rotary device according to the first embodiment. image 3 It is a connection diagram of the field winding of the synchronous rotating machine of Embodiment 1. Figure 4 It is a wiring diagram of the armature winding of the synchronous rotating machine of Embodiment 1.

[0033] Such as figure 2 As shown, the reluctance type multi-phase synchronous rotating equipment (hereinafter simply referred to as "rotating equipment main body") 450 of this embodiment is, for example, a three-phase synchronous generator. The rotor 10 and t...

Embodiment approach 2

[0120] Figure 10 It is a block diagram showing the structure of the synchronous rotating machine of Embodiment 2.

[0121] This embodiment is a modification of the first embodiment. The main control variable in Embodiment 1 is generator voltage, but the main control variable in Embodiment 2 is power factor. Therefore, the excitation control device 400 of this embodiment includes the power factor detection unit 223 . In addition, the field control device 400 includes a power factor control computing unit 222 instead of the voltage control computing unit 122 .

[0122] The target operating condition input unit 110 outputs the required power factor value to the first subtraction unit 221 . The first subtraction unit 221 subtracts the generator power factor value fed back from the power factor detection unit 223 from the required power factor value from the target operating condition input unit 110 to output a power factor deviation.

[0123] The power factor control calculat...

Embodiment approach 3

[0129] Figure 11 It is a block diagram showing the structure of the synchronous rotating machine of Embodiment 3.

[0130] This embodiment is a modification of the first embodiment. The synchronous rotating machine 500 in this embodiment is a synchronous motor.

[0131] In the case of a synchronous motor, the target operating condition is, for example, torque. The main control quantity is also torque.

[0132] In this embodiment, the excitation control device 400 has an output detection unit 324 for detecting the output of the synchronous rotating machine 500, a rotation speed detection unit 325 for detecting the rotation speed, a torque calculation unit 323 for calculating torque from the output and the rotation speed, and a torque control calculation unit. 322.

[0133] In addition, since it is the synchronous rotating machine 500, the rotation speed basically corresponds to the rotation speed of the power supply frequency, and the rotation speed detection unit 325 does...

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Abstract

This field control device (400) for a synchronous rotary machine (500) has the following: a target-operating-condition input unit (110); a first subtraction unit (121) that subtracts a final-control-quantity feedback value from an inputted final-control-quantity request value; a final-control-quantity control computation unit (122) that takes that difference as input and outputs a field-current correction request value; an anticipatory computation unit (130) that outputs a field-current anticipatory request value on the basis of an operating-condition request value; an addition unit (141) that adds the field-current correction request value to the field-current anticipatory request value; a second subtraction unit (142) that subtracts a field-current value from a field-current setting value; and a field-current regulation device (143) that regulates the field current on the basis of that difference. The anticipatory computation unit (130) has the following: a dependence-characteristics-data storage unit (132) that stores dependence characteristics estimated on the basis of the results of a no-load test; and a circuit calculation unit (133) that takes the operating-condition request value as input, uses the dependence characteristics to perform a circuit calculation, and outputs the field-current anticipatory request value.

Description

technical field [0001] The present invention relates to an excitation control device for synchronous rotating equipment, an excitation control method, and synchronous rotating equipment using them. Background technique [0002] In general, in order to perform an actual load test on a large-capacity rotating electric machine, a relatively large-scale load test device represented by a power supply device, a load device, and the like is required. [0003] Due to such restrictions, in reality, it is often difficult to implement actual load tests at manufacturing plants. In such a case, if the actual load test is to be carried out, the test is carried out in the environment of the actual equipment after installation in a field facility using a rotating electrical machine. [0004] prior art literature [0005] patent documents [0006] Patent Document 1: Japanese Patent Laid-Open No. 2011-172369 Contents of the invention [0007] The technical problem to be solved by the in...

Claims

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Application Information

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IPC IPC(8): H02P27/06G01R31/24H02P25/08
CPCH02P9/305G01R31/343H02P25/08H02P6/34H02P23/14H02P2103/20H02K3/18H02K15/02H02P9/26H02P6/24
Inventor 津田敏宏川村光弘深见正岛和男
Owner TOSHIBA MITSUBISHI-ELECTRIC IND SYST CORP
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