WO2006072981A1 - 回転電機の定数測定装置及び定数測定方法 - Google Patents
回転電機の定数測定装置及び定数測定方法 Download PDFInfo
- Publication number
- WO2006072981A1 WO2006072981A1 PCT/JP2005/000062 JP2005000062W WO2006072981A1 WO 2006072981 A1 WO2006072981 A1 WO 2006072981A1 JP 2005000062 W JP2005000062 W JP 2005000062W WO 2006072981 A1 WO2006072981 A1 WO 2006072981A1
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- WO
- WIPO (PCT)
- Prior art keywords
- time
- constant
- current
- voltage command
- value
- Prior art date
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
Definitions
- the present invention relates to an apparatus and method for measuring an electrical constant of an inverter-driven rotating electrical machine without rotation.
- Patent Document 1 a method of identifying the constant of the induction motor while the rotating electric machine is stopped.
- a single-phase alternating current is supplied to the rotating electrical machine, and the d-axis current detection value or the q-axis current detection value is subjected to Fourier series expansion to obtain the constant of the rotating electrical machine.
- patent document 2 as another method.
- a predetermined constant value is given to the rotating electrical machine as a voltage command value, the current value flowing through the rotating electrical machine at that time is measured, and the constant of the rotating electrical machine is determined by using the value where the current value converges to a constant value. Thank you.
- Patent Document 1 Japanese Patent Application Laid-Open No. 7-55899
- Patent Document 2 Japanese Patent Application Laid-Open No. 2002-199798
- the present invention provides a constant measuring device and a constant measuring method of a rotating electric machine capable of performing constant measurement without rotating in a complex configuration and method without taking a complicated configuration and method.
- the purpose is to
- the constant measuring device for a rotating electrical machine is a constant measuring device for a rotating electrical machine which is supplied with variable frequency and variable voltage via power conversion and is operated at variable speed.
- a voltage command computing unit that gives a value
- a current detector that detects the current flowing to the rotating electrical machine
- a time measuring device that measures the time that the current of the rotating electrical machine flows, the detected current and time force It is equipped with a constant computing unit to calculate and gives a voltage command value in a step-like manner. The change of the current value at that time is measured from a certain time T1 to T2.
- the method of measuring a constant of a rotating electrical machine for measuring a secondary time constant of a rotating electrical machine which is supplied with variable frequency and variable voltage via power conversion and is operated at variable speed.
- a voltage command value of the power converter is given stepwise, and a current value at a predetermined time flowing through the rotating electric machine and a time corresponding to a half life of the current value are measured, and the current value at the predetermined time and the half
- the second-order time constant is calculated using an approximation formula based on the interpolated current point at time zero obtained by linear interpolation based on the current value corresponding to the period.
- the measurement of the constant of the rotating electric machine driven by the inverter can be performed by a simple configuration and method without rotating the rotating electric machine, and the processing time can be performed with a software simpler than the conventional one. It can be shortened and requires a large storage capacity for software! /,effective.
- Fig. 1 is a block diagram for explaining the configuration of a constant measuring device for a rotating electrical machine according to an embodiment of the present invention
- Fig. 2 is a diagram showing a T-type equivalent circuit of a general induction motor
- Fig. 3 is an embodiment It is a figure which shows the voltage command signal in form 1 of 1, and a current response signal.
- FIG. 5 is a flowchart showing a method of measuring a constant in the first embodiment.
- FIG. 1 shows the measurement of the secondary time constant of the rotating electrical machine 1 such as an induction motor such as an inverter driven by the power converter 2 that generates an output voltage according to the voltage command value from the voltage command computing unit 3.
- the electric current detector 4 is provided with a constant calculator 6 that calculates the constant of the rotary electric machine 1 based on the detected current value and the time measured by the time measurement device 5.
- a voltage command value is generated by voltage command computing unit 3 based on a predetermined voltage command value, and an output voltage based on the voltage command value is supplied from electric power converter 2 to rotating electric machine 1
- the current flowing to the rotating electrical machine 1 is detected by the current detector 4, and the constant calculator 6 stores the current value, and based on the current value, the time measuring device 5 is used. It operates so that the constant calculator 6 calculates the secondary time constant from the stored current value and the time measurement value.
- IA may have a current with a value of 0 at certain times depending on the state of rotating electrical machine 1, so IA has a current IUJNF and an initial value of 1 (as shown in Figure 3 (b). The difference is 0).
- IA IU_INF-I (0) (6)
- the current response when the voltage command value is changed so as to rise in a stepwise manner from 0 ⁇ VA [V] as shown in FIG. 3 (a) will be considered using equation (5).
- Final value of current IUJNF is from final value rule 3 ⁇ 0
- equation (5) ignores the higher frequency than Ts + TrZ ⁇ TsTr, and when Rs ⁇ Rr and Ls ⁇ Lr,
- time Tl is set to a value sufficiently larger than a LsZ2Rs.
- time T1 [seconds] the current is measured, and the difference between IUJNF [A] and the current at time T1 is stored as IB [A].
- IB IUJNF-I (TI) (10)
- the point Z which is an interpolated current point at time 0 is obtained by linear interpolation based on the points B and C. (Step S14 in Figure 5)
- a voltage command value that rises in a step-like manner is given as the voltage command value of power converter 2, and the current value at a predetermined time flowing through rotating electric machine 1 is An approximate expression based on the interpolation current point at time zero obtained by linear interpolation based on the current value at the predetermined time and the current value corresponding to the half life by measuring the time corresponding to the half life of the current value of
- By calculating the second-order time constant it is possible to easily calculate the second-order time constant in the non-rotation state, and it is possible to execute with simpler software and shorten the processing time compared with the conventional one.
- FIG. 4 is a diagram showing a voltage command signal and a current response signal in the second embodiment.
- FIG. 6 is a flowchart showing a method of measuring a constant in the second embodiment. Also in this case, the same T-type equivalent circuit as that of the first embodiment is considered as an equivalent circuit of the rotary electric machine 1.
- the voltage command value VD [V] is given until time 0 in Fig. 4 (a).
- the voltage command value is stepped from VD to 0 [V] as shown in Fig. 4 (a) after a sufficient length of time for the current value to converge to a fixed value ID [A] with respect to this voltage command value VD.
- the current ⁇ ( ⁇ T) immediately after the voltage step drop may be considered as a step response of VD ⁇ 0 [V] of the voltage.
- the voltage command value of power converter 2 The voltage command value falling in a loop is given, and the current value at a predetermined time flowing to the rotating electrical machine 1 and the time corresponding to the half life of that current value are measured, and the current value at the predetermined time and the half life
- the second-order time constant can be easily calculated without rotation. It can be executed with simpler software than before, and processing time can be shortened.
- FIG. 1 is a schematic configuration diagram of a constant measuring device for a rotating electrical machine according to embodiments 1 and 2 of the present invention.
- FIG. 2 -A diagram showing a T-type equivalent circuit of a general induction motor.
- FIG. 3 is a diagram showing a voltage command signal and a current response signal in Embodiment 1 of the present invention.
- FIG. 4 is a diagram showing a voltage command signal and a current response signal in a second embodiment of the present invention.
- FIG. 5 is a flowchart showing a measurement method in Embodiment 1 of the present invention.
- FIG. 6 is a flow chart showing a measurement method in a second embodiment of the present invention.
- One rotation electric machine two power converters, three voltage reference calculators, four current detectors, five time measuring instruments, six constant calculators
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2005/000062 WO2006072981A1 (ja) | 2005-01-06 | 2005-01-06 | 回転電機の定数測定装置及び定数測定方法 |
JP2006550558A JP4771962B2 (ja) | 2005-01-06 | 2005-01-06 | 回転電機の定数測定方法 |
CNB2005800021952A CN100492044C (zh) | 2005-01-06 | 2005-01-06 | 旋转电机的常数测定方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2005/000062 WO2006072981A1 (ja) | 2005-01-06 | 2005-01-06 | 回転電機の定数測定装置及び定数測定方法 |
Publications (1)
Publication Number | Publication Date |
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WO2006072981A1 true WO2006072981A1 (ja) | 2006-07-13 |
Family
ID=36647469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/000062 WO2006072981A1 (ja) | 2005-01-06 | 2005-01-06 | 回転電機の定数測定装置及び定数測定方法 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP4771962B2 (ja) |
CN (1) | CN100492044C (ja) |
WO (1) | WO2006072981A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105116332A (zh) * | 2015-09-08 | 2015-12-02 | 哈尔滨工业大学 | 一种高温低压环境下电机的测试方法 |
CN105116331A (zh) * | 2015-09-08 | 2015-12-02 | 哈尔滨工业大学 | 一种高温高压环境下电机的测试方法 |
CN105182235A (zh) * | 2015-09-08 | 2015-12-23 | 哈尔滨工业大学 | 一种低温低压环境下电机的测试方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6242076A (ja) * | 1985-08-19 | 1987-02-24 | Meidensha Electric Mfg Co Ltd | 誘導電動機の定数測定方法 |
JPS6242075A (ja) * | 1985-08-19 | 1987-02-24 | Meidensha Electric Mfg Co Ltd | 誘導電動機の定数測定方法 |
JPH02106190A (ja) * | 1988-10-12 | 1990-04-18 | Meidensha Corp | 誘導電動機のベクトル制御装置 |
-
2005
- 2005-01-06 WO PCT/JP2005/000062 patent/WO2006072981A1/ja not_active Application Discontinuation
- 2005-01-06 JP JP2006550558A patent/JP4771962B2/ja not_active Expired - Fee Related
- 2005-01-06 CN CNB2005800021952A patent/CN100492044C/zh not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6242076A (ja) * | 1985-08-19 | 1987-02-24 | Meidensha Electric Mfg Co Ltd | 誘導電動機の定数測定方法 |
JPS6242075A (ja) * | 1985-08-19 | 1987-02-24 | Meidensha Electric Mfg Co Ltd | 誘導電動機の定数測定方法 |
JPH02106190A (ja) * | 1988-10-12 | 1990-04-18 | Meidensha Corp | 誘導電動機のベクトル制御装置 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105116332A (zh) * | 2015-09-08 | 2015-12-02 | 哈尔滨工业大学 | 一种高温低压环境下电机的测试方法 |
CN105116331A (zh) * | 2015-09-08 | 2015-12-02 | 哈尔滨工业大学 | 一种高温高压环境下电机的测试方法 |
CN105182235A (zh) * | 2015-09-08 | 2015-12-23 | 哈尔滨工业大学 | 一种低温低压环境下电机的测试方法 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2006072981A1 (ja) | 2008-08-07 |
CN1910466A (zh) | 2007-02-07 |
JP4771962B2 (ja) | 2011-09-14 |
CN100492044C (zh) | 2009-05-27 |
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