JPH06194240A - Torque electric operation system ac electric dynamometer - Google Patents
Torque electric operation system ac electric dynamometerInfo
- Publication number
- JPH06194240A JPH06194240A JP34645392A JP34645392A JPH06194240A JP H06194240 A JPH06194240 A JP H06194240A JP 34645392 A JP34645392 A JP 34645392A JP 34645392 A JP34645392 A JP 34645392A JP H06194240 A JPH06194240 A JP H06194240A
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- JP
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- Prior art keywords
- torque
- electric
- power
- current
- converter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、エンジン等の動力を
求めるトルク電気演算方式交流電気動力計に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a torque electric calculation type AC electric dynamometer for obtaining power of an engine or the like.
【０００２】[0002]
【従来の技術】図４は、例えば特開昭６０−８２８２６
号公報に示された従来のトルク電気演算方式交流電気動
力計を示すブロック線図である。図において、１は３相
交流電源、２は電力変換装置で、誘導機３に可変周波数
・可変電圧の３相交流電力を供給する。４は電流検出
器、５は電圧検出器、６は回転数検出器、７は誘導機３
内の温度検出器、８は電力検出変換器で、それぞれ電動
機電流Ｉ、電圧Ｖ、回転数Ｎ、電動機内部温度ｔ、電動
機入力Ｐｉｎを検出あるいは演算し、トルク演算装置９
へ入力する。2. Description of the Related Art FIG. 4 shows, for example, JP-A-60-82826.
FIG. 6 is a block diagram showing a conventional torque electric calculation type AC electric dynamometer shown in Japanese Patent Publication No. In the figure, 1 is a three-phase AC power supply, and 2 is a power converter, which supplies the induction machine 3 with three-phase AC power of variable frequency and variable voltage. 4 is a current detector, 5 is a voltage detector, 6 is a rotation speed detector, and 7 is an induction machine 3.
A temperature detector, 8 is a power detection converter, which detects or calculates a motor current I, a voltage V, a rotation speed N, a motor internal temperature t, and a motor input Pin, respectively, and a torque calculator 9
To enter.
【０００３】次に動作について説明する。トルク演算装
置９は、電動機出力を回転数で除したものが出力トルク
であることに鑑み、電動機入力を検出し、それより銅
損、鉄損、機械損、漂遊負荷損の各損失を減算して電動
機出力を求め、これを回転数で割算することにより、電
動機の出力軸トルクＴ〔kg・ｍ〕を演算する装置であ
り、下記（１）式を実行する。Next, the operation will be described. Considering that the output torque is obtained by dividing the motor output by the rotation speed, the torque calculation device 9 detects the motor input, and subtracts copper loss, iron loss, mechanical loss, and stray load loss from it. This is a device for calculating the output shaft torque T [kg · m] of the electric motor by obtaining the electric motor output and dividing it by the number of revolutions, and executes the following equation (1).
【０００４】 Ｔ＝Ｉ／Ｎ・（Ｐin−ＡＩ2 −ＢＶ−ＣＶ2 −ＤＮ3/2 −Ｅ） …（１）[0004] T = I / N · (Pin -AI 2 -BV-CV 2 -DN 3/2 -E) ... (1)
【０００５】なお、ＡＩ2 は銅損、ＢＶ、ＣＶ2 はヒス
テリシス損、渦電流損でともに鉄損、ＤＮ3/2 は機械
損，Ｅは漂遊負荷損をそれぞれ表わす。AI 2 is copper loss, BV and CV 2 are hysteresis loss, eddy current loss is iron loss, DN 3/2 is mechanical loss, and E is stray load loss.
【０００６】（１）式において、Ａ，Ｂ，Ｃ，Ｄ，Ｅの
各定数は、予めシミュレーション運転により少なくとも
５点の任意のポイントにおいて軸トルクを実測し、
（１）式に代入して５つの連立方程式を解くことにより
決定される。もっとも誘導機の各損失は内部温度により
変化し、上記各損失の定数Ａ，Ｂ，Ｃ，Ｄは温度の関数
となる。このため、誘導機の内部温度を違えて、各定数
Ａ，Ｂ，Ｃ，Ｄを求め、温度−定数特性のテーブルとし
て記憶しておく。すなわち、内部温度ｔを検出するの
は、実測温度に合致したパラメータＡ，Ｂ，Ｃ，Ｄをテ
ーブル中より選び、あるいは、パラメータがない場合に
直線補間の演算を行って最適なパラメータを決定するた
めである。In the equation (1), the constants A, B, C, D, and E are measured in advance by simulation operation to measure the axial torque at arbitrary points of at least 5 points,
It is determined by substituting in equation (1) and solving five simultaneous equations. However, each loss of the induction machine changes depending on the internal temperature, and the constants A, B, C and D of the above losses are functions of temperature. For this reason, the constants A, B, C, and D are obtained by changing the internal temperature of the induction machine and stored as a table of temperature-constant characteristics. That is, the internal temperature t is detected by selecting the parameters A, B, C, and D that match the measured temperature from the table, or if there is no parameter, perform linear interpolation calculation to determine the optimum parameter. This is because.
【０００７】[0007]
【発明が解決しようとする課題】従来のトルク電気演算
方式交流電気動力計は以上のように構成されており、電
力の計測を３相交流側で行うことから高価な電力検出変
換器８が必要であり、また電力検出変換器８の応答が一
般に遅いため、高速制御が必要な場合には対応が困難で
あるという問題があった。The conventional torque electric operation type AC electric dynamometer is constructed as described above, and since the electric power is measured on the three-phase AC side, an expensive electric power detection converter 8 is required. In addition, since the response of the power detection converter 8 is generally slow, there is a problem that it is difficult to cope with the case where high speed control is required.
【０００８】さらに、従来のトルク電気演算方式交流電
気動力計では、温度−定数特性のテーブルにてトルク補
正を行うため、誘導機温度をフルスケールまで上昇させ
て試験することにより、温度−定数特性のテーブルを出
荷前に作り込む必要があり、多大な労力を要するという
問題もあった。Further, in the conventional torque electric operation type AC electric dynamometer, torque correction is performed using a temperature-constant characteristic table. There is also a problem that it is necessary to make the table of No. 2 before shipping, which requires a lot of labor.
【０００９】この発明は上記のような課題を解決するた
めになされたものであり、高価な電力検出変換器なしに
電動機入力を検出でき、しかも従来に比べて応答速度を
高速化することを目的とする。さらに、温度−定数特性
のテーブルなしに補正を行なうことを可能とし、出荷前
の試験調整の労力を省くことを目的とする。The present invention has been made to solve the above problems, and an object of the present invention is to detect an electric motor input without an expensive power detection converter and to speed up the response speed as compared with the prior art. And Further, it is possible to perform the correction without the temperature-constant characteristic table, and to save the labor of the test adjustment before shipment.
【００１０】[0010]
【課題を解決するための手段】この発明に係るトルク電
気演算方式交流電気動力計は、電力変換装置の直流側の
電流と電圧を検出する手段と、電力変換装置の一部であ
るインバータで制御している界磁分電流（以下、ｄ軸分
電流Ｉｄと称す）とトルク分電流（以下、ｑ軸分電流Ｉ
ｑと称す）とを検出する手段と、誘導機内部の温度を検
出する手段と、誘導機の回転数を検出する手段と、これ
ら検出信号に基いてトルクを演算し、かつ温度補正を行
うトルク演算装置を備えたものである。A torque electric operation type AC electric dynamometer according to the present invention is controlled by means for detecting a DC side current and voltage of a power converter and an inverter which is a part of the power converter. Field current (hereinafter referred to as d-axis current Id) and torque current (hereinafter referred to as q-axis current I)
(referred to as q), a means for detecting the temperature inside the induction machine, a means for detecting the rotation speed of the induction machine, and a torque for calculating the torque and correcting the temperature based on these detection signals. It is equipped with an arithmetic unit.
【００１１】[0011]
【作用】この発明に係るトルク電気演算方式交流電気動
力計は、電力変換装置の直流側の電流Ｉと電圧Ｖ、電力
変換装置の一部であるインバータで制御しているｄ軸分
電流Ｉｄとｑ軸分電流Ｉｑ、誘導機内部の温度ｔ、誘導
機の回転数Ｎを検出し、これら検出信号に基づいてトル
クを演算し、かつ温度補正を行う。このため、従来不可
欠であった高価な電力検出変換器が不要となる。The torque electric operation type AC electric dynamometer according to the present invention has a current I and a voltage V on the DC side of a power converter, and a d-axis component current Id controlled by an inverter which is a part of the power converter. The q-axis component current Iq, the temperature t inside the induction machine, and the rotation speed N of the induction machine are detected, the torque is calculated based on these detection signals, and the temperature is corrected. Therefore, the expensive power detection converter, which has been indispensable in the past, becomes unnecessary.
【００１２】[0012]
実施例１．以下、この発明の第１の実施例を図１に基づ
いて説明する。図１において、１は３相交流電源、２は
電力変換装置である。電力変換装置２は、交流を直流に
変換するコンバータ２ａと、このコンバータ２ａから出
力される直流電力を交流に変換し、誘導機３に可変周波
数・可変電圧の３相交流電力を供給するインバータ２ｂ
とから構成されている。Example 1. A first embodiment of the present invention will be described below with reference to FIG. In FIG. 1, 1 is a three-phase AC power supply, and 2 is a power converter. The power conversion device 2 includes a converter 2a for converting AC into DC and an inverter 2b for converting DC power output from the converter 2a into AC and supplying three-phase AC power of variable frequency and voltage to the induction machine 3.
It consists of and.
【００１３】４はコンバータ２ａから出力される直流電
流を検出する直流電流検出器、５はコンバータ２ａから
出力される直流電圧を検出する直流電圧検出器、６は回
転数検出器、７は誘導機３内の温度検出器で、それぞれ
電流Ｉ、電圧Ｖ、回転数Ｎ、電動機の内部温度ｔを検出
し、トルク演算装置９へ入力する。また、インバータ２
ｂ内には、ｑ軸分電流Ｉｑとｄ軸分電流Ｉｄとを検出す
る手段を設け、ｑ軸分電流信号１０とｄ軸分電流信号１
１をトルク演算装置９へ入力する。Reference numeral 4 is a DC current detector for detecting a DC current output from the converter 2a, 5 is a DC voltage detector for detecting a DC voltage output from the converter 2a, 6 is a rotation speed detector, and 7 is an induction machine. The temperature detector in 3 detects the current I, the voltage V, the rotation speed N, and the internal temperature t of the electric motor, and inputs them to the torque calculation device 9. In addition, the inverter 2
A unit for detecting the q-axis current Iq and the d-axis current Id is provided in b, and the q-axis current signal 10 and the d-axis current signal 1 are provided.
1 is input to the torque calculation device 9.
【００１４】次に動作について説明する。直流の場合、
その電力は直流電圧Ｖと直流電流Ｉのスカラー積で表さ
れるので、電力変換装置２の損失を無視できるとすれ
ば、電動機入力はこの直流電圧Ｖと直流電流Ｉのスカラ
ー積で表される。したがって、この直流電圧Ｖと直流電
流Ｉを計測しておけば、これらの値の積算のみで電動機
入力を得ることができ、従来に比べて電動機入力を１０
倍以上速い速度で得ることができる。Next, the operation will be described. For direct current,
Since the electric power is represented by the scalar product of the DC voltage V and the DC current I, if the loss of the power converter 2 can be ignored, the motor input is represented by the scalar product of the DC voltage V and the DC current I. . Therefore, if the DC voltage V and the DC current I are measured, the motor input can be obtained only by integrating these values, and the motor input is 10
It can be obtained at a speed more than twice as fast.
【００１５】ところで、電動機出力を回転数で除したも
のが出力トルクである。そこで、トルク演算装置９は、
前記の電動機入力より銅損、漂遊負荷損の各損失を減算
して電動機出力を求め、これを回転数で割算し、電動機
出力軸トルクＴ〔kg・ｍ〕を演算する装置であり、下記
（２）式を実行する。By the way, the output torque is obtained by dividing the electric motor output by the rotational speed. Therefore, the torque calculation device 9
A device for subtracting copper loss and stray load loss from the electric motor input to obtain the electric motor output, dividing this by the number of revolutions, and calculating the electric motor output shaft torque T [kg · m]. The equation (2) is executed.
【００１６】 Ｔ＝Ｋ／Ｎ・［ＩＶ−K1・α・r1・(Id2＋Iq2)−K2・α・r2・Iq2 −Ｅ］ …（２）T = K / N · [IV−K1 · α · r1 · (Id 2 + Iq 2 ) −K2 · α · r2 · Iq 2 −E] (2)
【００１７】さて、（２）式において、K1・α・r1・(I
d2＋Iq2)は誘導機３の１次銅損、K2・α・r2・Iq2 は誘
導機３の２次銅損、Ｅは漂遊負荷損をそれぞれ表わす。
αは抵抗の温度補正係数であり、温度検出器７で計測さ
れた誘導機内部温度ｔの関数となり、誘導機３の１次抵
抗ｒ１と２次抵抗ｒ２の温度補正を行う。Ｋ，K1，K2は
それぞれ係数である。Now, in the equation (2), K1.alpha.r1. (I
d 2 + Iq 2 ) is the primary copper loss of the induction machine 3, K 2 · α · r 2 · Iq 2 is the secondary copper loss of the induction machine 3, and E is the stray load loss.
α is a resistance temperature correction coefficient, which is a function of the induction machine internal temperature t measured by the temperature detector 7, and performs temperature correction of the primary resistance r1 and the secondary resistance r2 of the induction machine 3. K, K1 and K2 are coefficients.
【００１８】実施例２．上記第１の実施例では、直流電
圧Ｖと直流電流Ｉを検出するに当たり、直流電圧検出器
５と直流電流検出器４をコンバータ２ａの出力側に設け
たが、この直流電圧Ｖと直流電流Ｉはコンバータ２ａに
よって制御されているのであるから、コンバータ２ａで
制御のために検出している直流電圧信号と直流電流信号
をそのまま利用し、これをトルク演算装置９に取り込む
ようにしてもよい。Example 2. In the first embodiment, in detecting the DC voltage V and the DC current I, the DC voltage detector 5 and the DC current detector 4 are provided on the output side of the converter 2a. Is controlled by the converter 2a, the DC voltage signal and the DC current signal detected for control by the converter 2a may be used as they are and taken into the torque calculation device 9.
【００１９】実施例３．この発明の第３の実施例を図２
に示す。上記第１の実施例では、銅損と漂遊損のみの補
正であったが、図２に示すように無負荷損補正部１２を
付加し、下記（３）式を実行するようにすれば、トルク
演算精度の向上が図れる。その内容を（３）式に基づい
て説明する。Example 3. A third embodiment of the present invention is shown in FIG.
Shown in. In the first embodiment, only the copper loss and the stray loss were corrected, but by adding the no-load loss correction unit 12 as shown in FIG. 2 and executing the following formula (3), The torque calculation accuracy can be improved. The contents will be described based on the equation (3).
【００２０】 Ｔ＝Ｋ／Ｎ・［ＩＶ−K1・α・r1・(Id2＋Iq2)−K2・α・r2・Iq2 -E］-Tm …（３）T = K / N · [IV−K1 · α · r1 · (Id 2 + Iq 2 ) -K2 · α · r2 · Iq 2 -E] -Tm (3)
【００２１】機械損と鉄損は負荷に係わらずほぼ一定で
あり、このため機械損と鉄損との和は無負荷損として表
現でき、回転数Ｎの関数となる。つまり、誘導機３を無
負荷で運転し、前述（２）式を実行して得られるトルク
が無負荷損Ｔｍである。したがって、調整運転において
誘導機を無負荷で運転したときに（２）式を実行して各
回転数毎に得られるトルクを無負荷補正テーブルとして
記憶しておき、実運転において計測される回転数Ｎに対
応した無負荷損Ｔｍを無負荷補正テーブルから読みだし
て補正する負荷損補正部１２を設け、（３）式を実行す
ることにより、トルク演算精度の向上が実現される。Since the mechanical loss and the iron loss are almost constant regardless of the load, the sum of the mechanical loss and the iron loss can be expressed as a no-load loss, which is a function of the rotation speed N. That is, the torque obtained by operating the induction machine 3 with no load and executing the equation (2) is the no-load loss Tm. Therefore, when the induction machine is operated under no load in the adjustment operation, the torque obtained for each rotation speed by executing the equation (2) is stored as a no-load correction table, and the rotation speed measured in the actual operation is stored. By improving the torque calculation accuracy by providing the load loss correction unit 12 that reads the no-load loss Tm corresponding to N from the no-load correction table and corrects the load loss correction unit 12.
【００２２】実施例４．この発明の第４の実施例を図３
に示す。上記第３の実施例は、無負荷損補正部１２を設
け、機械損と鉄損の補正を行なうようにしたものであっ
たが、さらに、図３に示すようにトルク誤差補正部１３
を付加し、電力変換装置２の損失を中心とした負荷損σ
Ｔを補正するようにすれば、さらにトルク演算精度を向
上させることができる。その内容を下記（４）式に基づ
いて説明する。Example 4. The fourth embodiment of the present invention is shown in FIG.
Shown in. In the third embodiment described above, the no-load loss correction unit 12 is provided to correct mechanical loss and iron loss. Further, as shown in FIG. 3, the torque error correction unit 13 is further provided.
And load loss σ centered on the loss of the power conversion device 2
If T is corrected, the accuracy of torque calculation can be further improved. The contents will be described based on the following formula (4).
【００２３】 Ｔ＝Ｋ／Ｎ・［ＩＶ−K1・α・r1・(Id2＋Iq2)−K2・α・r2・Iq2 -E］-Tm-σT …（４）T = K / N · [IV−K1 · α · r1 · (Id 2 + Iq 2 ) −K2 · α · r2 · Iq 2 −E] -Tm-σT (4)
【００２４】出荷前調整運転において、誘導機の軸トル
クを検出する軸トルク計等の手段を設けて負荷運転を行
い、この軸トルク計から検出される軸トルクと前述
（３）式を実行して得られる演算トルクとの誤差を求め
ると、それが負荷損σＴである。In the pre-shipment adjustment operation, load operation is performed by providing a means such as an axial torque meter for detecting the axial torque of the induction machine, and the axial torque detected from this axial torque meter and the above equation (3) are executed. The error with the calculated torque obtained by the above calculation is the load loss σT.
【００２５】したがって、調整運転において、誘導機３
に負荷をかけて運転したときに（３）式を実行して、各
回転数及び各負荷毎に得られるトルクをトルク誤差補正
テーブルとして持ち、実運転において計測される回転数
Ｎと（３）式を実行して得られる演算トルクに対応した
トルク誤差σＴをトルク誤差補正テーブルから読み出し
てトルク誤差を補正するトルク誤差補正部１３を設け、
（４）式を実行することにより、さらなるトルク演算精
度の向上が実現される。Therefore, in the adjustment operation, the induction machine 3
(3) is executed when a load is applied to the motor, and the torque obtained for each rotation speed and each load is held as a torque error correction table, and the rotation speed N measured in actual operation and (3) A torque error correction unit 13 that corrects the torque error by reading the torque error σT corresponding to the calculated torque obtained by executing the equation from the torque error correction table is provided.
By executing the equation (4), the accuracy of the torque calculation is further improved.
【００２６】実施例５．上記第４の実施例では、漂遊負
荷損Ｅと負荷損σＴを分離していたが、下記（５）式に
示すように、漂遊負荷損Ｅの補正を負荷損σＴに集約さ
せても同様の効果を得ることができる。Example 5. In the fourth embodiment described above, the stray load loss E and the load loss σT are separated, but as shown in the following formula (5), the same effect can be obtained by consolidating the correction of the stray load loss E into the load loss σT. The effect can be obtained.
【００２７】 Ｔ＝Ｋ／Ｎ・［ＩＶ−K1・α・r1・(Id2＋Iq2)−K2・α・r2・Iq2 ］-Tm - σT …（５）T = K / N · [IV−K1 · α · r1 · (Id 2 + Iq 2 ) -K2 · α · r2 · Iq 2 ] -Tm-σT (5)
【００２８】実施例６．上記第４の実施例では、無負荷
損補正部１２とトルク誤差補正部１３を分離したが、無
負荷損Ｔｍは負荷損σＴの一部として捉えることができ
るので、下記（６）式に示すように、無負荷損補正部１
２の機能をトルク誤差補正部１３に集約させても同様の
効果を得ることができる。Example 6. In the fourth embodiment, the no-load loss correction unit 12 and the torque error correction unit 13 are separated, but since the no-load loss Tm can be regarded as a part of the load loss σT, it is represented by the following formula (6). As described above, the no-load loss correction unit 1
The same effect can be obtained even if the second function is integrated in the torque error correction unit 13.
【００２９】 Ｔ＝Ｋ／Ｎ・［ＩＶ−K1・α・r1・(Id2＋Iq2)−K2・α・r2・Iq2 -E］−σT …（６）T = K / N · [IV−K1 · α · r1 · (Id 2 + Iq 2 ) −K2 · α · r2 · Iq 2 −E] −σT (6)
【００３０】[0030]
【発明の効果】以上のように、この発明によれば、電力
変換装置の直流側の電流と電圧、電力変換装置の一部で
あるインバータで制御しているｄ軸分電流とｑ軸分電
流、誘導機の回転数および温度を検出し、これらの検出
信号を用いて軸トルクを演算するようにしたので、従来
不可欠であった高価な電力変換検出器が不要となり、装
置を安価に構成することができる。しかも、従来に比べ
て応答速度を高速化することができるので、高速制御が
必要な用途にも適用することができる。As described above, according to the present invention, the current and voltage on the DC side of the power converter, the d-axis current and the q-axis current controlled by the inverter which is a part of the power converter. Since the rotation speed and temperature of the induction machine are detected and the shaft torque is calculated using these detection signals, the expensive power conversion detector, which was indispensable in the past, is not required, and the device is inexpensively constructed. be able to. In addition, since the response speed can be increased as compared with the conventional one, it can be applied to applications requiring high-speed control.
【００３１】また、誘導機内部の温度を検出し、誘導機
内部温度の関数となる抵抗の温度補正係数によって温度
補正を行なうようにしたので、温度−定数特性のテーブ
ルが不要となり、出荷前の試験調整が省力化される。Further, since the temperature inside the induction machine is detected and the temperature is corrected by the temperature correction coefficient of the resistance which is a function of the temperature inside the induction machine, the temperature-constant characteristic table becomes unnecessary, and the temperature before the shipment is set. Test adjustment is labor-saving.
【図１】この発明の第１の実施例を示すブロック図であ
る。FIG. 1 is a block diagram showing a first embodiment of the present invention.
【図２】この発明の第３の実施例を示すブロック図であ
る。FIG. 2 is a block diagram showing a third embodiment of the present invention.
【図３】この発明の第４の実施例を示すブロック図であ
る。FIG. 3 is a block diagram showing a fourth embodiment of the present invention.
【図４】従来のトルク電気演算方式交流電気動力計を示
すブロック図である。FIG. 4 is a block diagram showing a conventional torque electric calculation type AC electric dynamometer.
１ 交流電源 ２ 電力変換装置 ２ａ コンバータ ２ｂ インバータ ３ 誘導機 ４ 直流電流検出器 ５ 直流電圧検出器 ６ 速度検出器 ７ 温度検出器 ９ トルク演算装置 １０ ｑ軸分電流 １１ ｄ軸分電流 １２ 無負荷損補正部 １３ トルク誤差補正部 1 AC power supply 2 Power converter 2a Converter 2b Inverter 3 Induction machine 4 DC current detector 5 DC voltage detector 6 Speed detector 7 Temperature detector 9 Torque calculation device 10 q-axis component current 11 d-axis component current 12 No load loss Correction unit 13 Torque error correction unit
Claims (3)
を検出する手段と、 電力変換装置の一部であるインバータで制御しているｄ
軸分電流Ｉｄとｑ軸分電流Ｉｑとを検出する手段と、 誘導機内部の温度ｔを検出する手段と、 誘導機の回転数Ｎを検出する手段と、 これら検出信号に基づいて軸トルクを算出するとともに
温度補正を行うトルク演算装置とを備え、 前記トルク演算装置は、 Ｔ＝Ｋ／Ｎ・［ＩＶ−K1・α・r1・(Id2＋Iq2)−K2・α・r2・Iq2 -E］ に基づいて軸トルクＴを算出するものであることを特徴
とするトルク電気演算方式交流電気動力計。1. A current I and a voltage V on the DC side of a power converter.
Which is controlled by an inverter which is a part of the power converter and a means for detecting
A means for detecting the axial current Id and the q-axis current Iq, a means for detecting the temperature t inside the induction machine, a means for detecting the rotational speed N of the induction machine, and an axial torque based on these detection signals. And a torque calculation device for performing temperature correction, wherein T = K / N · [IV−K1 · α · r1 · (Id 2 + Iq 2 ) −K2 · α · r2 · Iq 2 -E] is used to calculate the shaft torque T based on the torque electric calculation type AC electric dynamometer.
流電気動力計において、 各回転数における無負荷損Ｔｍ与える回転数−無負荷損
補正テーブルを備えた無負荷損補正部を設け、 トルク演算装置は、 Ｔ＝Ｋ／Ｎ・［ＩＶ−K1・α・r1・(Id2＋Iq2)−K2・α・r2・Iq2 -E］-Tm に基づいて軸トルクＴを算出するものであることを特徴
とするトルク電気演算方式交流電気動力計。2. The torque electric operation type AC electric dynamometer according to claim 1, further comprising a no-load loss correction unit provided with a no-load loss correction table for giving a no-load loss Tm at each number of revolutions. the arithmetic device calculates a shaft torque T based on T = K / N · [IV -K1 · α · r1 · (Id 2 + Iq 2) -K2 · α · r2 · Iq 2 -E] -Tm A torque electric calculation type AC electric dynamometer characterized in that
流電気動力計において、 回転数とトルクをパラメータとして負荷損σＴを与える
負荷損補正テーブルを備えたトルク誤差補正部を設け、 トルク演算装置は、 Ｔ＝Ｋ／Ｎ・［ＩＶ−K1・α・r1・(Id2＋Iq2)−K2・α・r2・Iq2 -E］-Tm-σT に基づいて軸トルクＴを算出するものであることを特徴
とするトルク電気演算方式交流電気動力計。3. The torque electric calculation type AC electric dynamometer according to claim 2, further comprising a torque error correction unit provided with a load loss correction table for giving a load loss σT using rotation speed and torque as parameters. Is the axial torque T calculated based on T = K / N · [IV−K1 · α · r1 · (Id 2 + Iq 2 ) −K2 · α · r2 · Iq 2 -E] -Tm-σT. A torque electric calculation type AC electric dynamometer characterized in that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34645392A JP2646949B2 (en) | 1992-12-25 | 1992-12-25 | Torque electric operation method AC electric dynamometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34645392A JP2646949B2 (en) | 1992-12-25 | 1992-12-25 | Torque electric operation method AC electric dynamometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06194240A true JPH06194240A (en) | 1994-07-15 |
| JP2646949B2 JP2646949B2 (en) | 1997-08-27 |
Family
ID=18383539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34645392A Expired - Lifetime JP2646949B2 (en) | 1992-12-25 | 1992-12-25 | Torque electric operation method AC electric dynamometer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2646949B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008128870A (en) * | 2006-11-22 | 2008-06-05 | Satake Chemical Equipment Mfg Ltd | Agitation!stirring torque measurement method and measuring device |
| WO2012007396A3 (en) * | 2010-07-16 | 2012-12-27 | Robert Bosch Gmbh | Method and device for determining a momentary torque of an electronically switched electric machine and for regulating the average torque |
| CN103743510A (en) * | 2014-01-23 | 2014-04-23 | 湖南银河电气有限公司 | Novel electronic type torque meter |
| KR20230132859A (en) | 2021-06-25 | 2023-09-18 | 가부시키가이샤 히다치 산키시스템 | electric motor control device |
-
1992
- 1992-12-25 JP JP34645392A patent/JP2646949B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008128870A (en) * | 2006-11-22 | 2008-06-05 | Satake Chemical Equipment Mfg Ltd | Agitation!stirring torque measurement method and measuring device |
| WO2012007396A3 (en) * | 2010-07-16 | 2012-12-27 | Robert Bosch Gmbh | Method and device for determining a momentary torque of an electronically switched electric machine and for regulating the average torque |
| CN102971960A (en) * | 2010-07-16 | 2013-03-13 | 罗伯特·博世有限公司 | Method and device for determining a momentary torque of an electronically switched electric machine and for regulating the average torque |
| CN103743510A (en) * | 2014-01-23 | 2014-04-23 | 湖南银河电气有限公司 | Novel electronic type torque meter |
| KR20230132859A (en) | 2021-06-25 | 2023-09-18 | 가부시키가이샤 히다치 산키시스템 | electric motor control device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2646949B2 (en) | 1997-08-27 |
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