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Power generation device

A technology for generating devices and power, applied in the field of power generating devices, can solve problems such as motor detection delay, difficulty in detecting motor out-of-step, and difficulty in judging out-of-step

Active Publication Date: 2019-08-09
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when estimation is performed while performing interpolation, there may be a delay in the detection of motor out-of-synchronization or it may be difficult to detect motor out-of-synchronization
Therefore, it is also difficult to judge out-of-synchronization in the above-mentioned power generating device

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0043] First, refer to figure 1 The structure of the power generation device in Embodiment 1 of the present invention will be described.

[0044] figure 1 It is a block diagram of the power generation device in Embodiment 1 of this invention.

[0045] Such as figure 1 As shown, the power generator of this embodiment is constituted by a motor 18 having windings 15 , 16 , 17 , a power supply circuit 19 for supplying current to windings 15 , 16 , 17 , and the like.

[0046] The power supply circuit 19 includes a winding current control unit 20 for controlling the currents of the windings 15, 16, and 17, a first electromotive force calculation unit 21, an adder 22, a first predetermined value generation unit 23, a speed signal generation unit 24, and an integration unit 25. , a speed command unit 26, a subtractor 27, a current command value generation unit 28, a restart signal generation unit 29, and the like. The winding current control unit 20 includes subtractors 30, 31, a...

Embodiment approach 2

[0147] Below, refer to figure 1 ,use Figure 8 A power generation device in Embodiment 2 of the present invention will be described.

[0148] Figure 8 is a vector diagram in a normal operating state of the power generation device in Embodiment 2 of the present invention.

[0149] The power generation device of this embodiment differs from Embodiment 1 in that the output Vb of the first predetermined value generator 23 is set to -0.5V (corresponding to the first predetermined value), that is, a negative value. Other parts are equivalent to those of the first embodiment.

[0150] exist Figure 8 Among them, the vector A represents the electromotive force vector when the electromotive force is large, the vector B represents the electromotive force vector when the electromotive force is small, and the vector I represents the current vector.

[0151] In this embodiment, figure 1 The speed signal generator 24 shown has a function of decreasing the speed signals ω1 and ω2 wh...

Embodiment approach 3

[0174] Next, use Figure 11 The structure of the power generation device in Embodiment 3 of the present invention will be described.

[0175] Figure 11 It is a block diagram of the power generation device in Embodiment 3 of this invention.

[0176] Such as Figure 11 As shown, the power generation device of this embodiment differs from Embodiment 1 mainly in that the voltage signal output unit 74 and the current signal output unit 75 are not included in the winding current control unit 70 in the power supply circuit 69 . The other constituent elements are equivalent to those of Embodiment 1, and thus will be described with the same reference numerals.

[0177] That is, the power generation device of the present embodiment is constituted by the electric motor 18 equivalent to the first embodiment, the power supply circuit 69 for supplying electric current to the electric motor 18, and the like.

[0178] The power supply circuit 69 includes a winding current control unit 70...

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PUM

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Abstract

A power generation device comprising: an electric motor (18) that has a first object, a second object, permanent magnets, and windings (15, 16, 17), and that generates an electromotive force in the windings by relative motion between the first object and the second object; and a power supply circuit (19) that supplies current to the windings, and that has a property whereby the phase of the current with respect to the permanent magnets changes when the magnitude of the electromotive force changes. When the electric motor (18) steps out, the power supply circuit (19) changes the frequency of the current with respect to the frequency before the step-out, and then restarts the electric motor (18). Consequently, provided is a power generation device that can suitably determine a step-out stateand recover original function.

Description

technical field [0001] The present invention relates to a power generating device used as a power source for home appliances such as electric washing machines, air conditioners, and refrigerators used in general households, as well as for offices, commercial applications, and vehicles. Background technique [0002] Conventionally, a power generation device has been disclosed that detects out-of-synchronization by providing a first speed estimating unit and a second speed estimating unit having an estimation method different from that of the first speed estimating unit (for example, refer to Patent Document 1). The first speed estimating unit estimates the rotation speed so that the shaft error Δθ or Δθm of the rotor of the electric motor using the permanent magnet converges to zero, and outputs the first estimated rotation speed. The second speed estimation unit controls the motor so that the first estimated rotational speed follows the speed command, and outputs a second es...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P1/46H02P21/34
CPCH02P1/46H02P21/34
Inventor 麻田和彦东光英野岛元龟田晃史
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD