JP2001186800A - Controller for permanent-magnet synchronous motor - Google Patents
Controller for permanent-magnet synchronous motorInfo
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- JP2001186800A JP2001186800A JP36894299A JP36894299A JP2001186800A JP 2001186800 A JP2001186800 A JP 2001186800A JP 36894299 A JP36894299 A JP 36894299A JP 36894299 A JP36894299 A JP 36894299A JP 2001186800 A JP2001186800 A JP 2001186800A
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- permanent magnet
- synchronous motor
- axis current
- magnetic flux
- axis
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Abstract
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【発明の属する技術分野】本発明は、永久磁石型同期電
動機におけるトルク制御に関するもので、特に温度変化
によるトルク精度の変動を改善するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to torque control in a permanent magnet type synchronous motor, and more particularly to a method for improving a variation in torque accuracy due to a temperature change.
【０００２】[0002]
【従来の技術】従来技術の一例を図２に示し、これにつ
いて説明する。電力変換器５は、永久磁石型同期電動機
１に電力を供給する。電流検出器４は永久磁石型同期電
動機１の入力電流ｉを検出する。電流成分変換器９は、
入力電流ｉを入力とし、永久磁石型同期電動機１の永久
磁石と平行方向であるｄ軸電流ｉｄと、垂直方向である
ｑ軸電流ｉｑとを出力する。設定記憶手段１０は、永久
磁石型同期電動機１のｄ軸インダクタンスＬｄとｑ軸イ
ンダクタンスＬｑと永久磁石の磁束φとを設定記憶す
る。2. Description of the Related Art An example of the prior art is shown in FIG. 2 and will be described. The power converter 5 supplies power to the permanent magnet type synchronous motor 1. The current detector 4 detects an input current i of the permanent magnet type synchronous motor 1. The current component converter 9 is
An input current i is input, and a d-axis current id parallel to the permanent magnet of the permanent magnet type synchronous motor 1 and a q-axis current iq perpendicular to the permanent magnet are output. The setting storage means 10 sets and stores the d-axis inductance Ld, the q-axis inductance Lq, and the magnetic flux φ of the permanent magnet of the permanent magnet type synchronous motor 1.
【０００３】ｑ軸電流指令算出器７は、トルク指令Ｔｃ
と、ｄ軸電流指令ｉｄｒと、ｄ軸インダクタンスＬｄと
ｑ軸インダクタンスＬｑと永久磁石の磁束φとを入力し
てｑ軸電流指令ｉｑｒを出力する。ｄ軸電流指令算出器
８は、ｄ軸電流指令ｉｄｒを出力する。電流制御器６
は、ｄ軸電流ｉｄ、ｑ軸電流ｉｑ、ｄ軸電流指令ｉｄ
ｒ、ｑ軸電流指令ｉｑｒとを入力し、各電流値が指令値
に追従するよう制御信号を電力変換器５へ出力する。The q-axis current command calculator 7 calculates a torque command Tc
And the d-axis current command idr, the d-axis inductance Ld, the q-axis inductance Lq, and the magnetic flux φ of the permanent magnet, and output the q-axis current command iqr. The d-axis current command calculator 8 outputs a d-axis current command idr. Current controller 6
Are d-axis current id, q-axis current iq, d-axis current command id
r and q-axis current commands iqr are input, and a control signal is output to the power converter 5 so that each current value follows the command value.
【０００４】[0004]
【発明が解決しようとする課題】永久磁石型同期電動機
のトルク式は、次式で表される。The torque equation of the permanent magnet type synchronous motor is expressed by the following equation.
【０００５】 [0005]
【０００６】（１）式より、ｑ軸電流指令ｉｑｒは、次
式のように求められる。[0006] From equation (1), the q-axis current command iqr is obtained as follows.
【０００７】 [0007]
【０００８】（２）式より、ｑ軸電流指令ｉｑｒは永久
磁石型同期電動機のｄ軸インダクタンスＬｄとｑ軸イン
ダクタンスＬｑと永久磁石の磁束φとを用いて算出され
る。ところが、永久磁石の磁束φは永久磁石型同期電動
機の温度変化によって変動するため、永久磁石の磁束φ
を固定しておくと、温度変化によって（２）式のｑ軸電
流指令値ｉｑｒが正しい値として算出されず、永久磁石
型同期電動機の出力トルクの制御精度が変動する結果と
なる。本発明は上述した点に鑑みて創案されたもので、
その目的とするところは、永久磁石型同期電動機の温度
変化を推定し永久磁石の磁束の温度変化による変動を修
正する機能を設けることで上記問題点を解決し、さらに
永久磁石型同期電動機のトルク制御を高精度化するもの
である。From the equation (2), the q-axis current command iqr is calculated using the d-axis inductance Ld of the permanent magnet type synchronous motor, the q-axis inductance Lq, and the magnetic flux φ of the permanent magnet. However, since the magnetic flux φ of the permanent magnet fluctuates due to the temperature change of the permanent magnet type synchronous motor, the magnetic flux φ of the permanent magnet is
Is fixed, the q-axis current command value iqr in equation (2) is not calculated as a correct value due to a temperature change, and the result is that the control accuracy of the output torque of the permanent magnet type synchronous motor fluctuates. The present invention has been made in view of the above points,
The purpose is to solve the above problem by providing a function of estimating the temperature change of the permanent magnet type synchronous motor and correcting the fluctuation due to the temperature change of the magnetic flux of the permanent magnet. This is to improve the control accuracy.
【０００９】[0009]
【課題を解決するための手段】上記問題点を解決するた
め、電流制御器出力を制御入力とする電力変換器を介し
て永久磁石型同期電動機に供給される入力電流を検出す
る電流検出器と、この電流検出器出力を前記永久磁石型
同期電動機の永久磁石と平行方向であるｄ軸電流と、垂
直方向であるｑ軸電流とに変換出力する電流成分変換器
と、前記永久磁石の磁束及び一次抵抗を設定記憶する設
定記憶手段と、ｄ軸電流指令を算出するｄ軸電流指令算
出器と、前記永久磁石型同期電動機の出力トルク指令値
と前記設定記憶手段の磁束及びｄ軸電流指令とからｑ軸
電流指令を算出するｑ軸電流指令算出器と、前記ｄ軸電
流とｑ軸電流及びｄ軸電流指令とｑ軸電流指令とを入力
とする電流制御器と、前記永久磁石型同期電動機の入力
電圧を検出または推定する電圧検出器と、この電圧検出
器出力から前記永久磁石と垂直方向であるｑ軸電圧を出
力する電圧成分変換器と、前記永久磁石型同期電動機の
回転速度を検出する速度検出器と、前記のｄ軸電流、ｑ
軸電流、ｑ軸電圧、回転速度、設定記憶手段の一次抵抗
と磁束の各値とから前記永久磁石型同期電動機の温度変
化を推定する温度推定器とを具備する。In order to solve the above-mentioned problems, a current detector for detecting an input current supplied to a permanent magnet type synchronous motor via a power converter having a current controller output as a control input is provided. A current component converter that converts and outputs the current detector output to a d-axis current parallel to the permanent magnet of the permanent magnet type synchronous motor and a q-axis current perpendicular to the permanent magnet, a magnetic flux of the permanent magnet, Setting storage means for setting and storing a primary resistance, a d-axis current command calculator for calculating a d-axis current command, an output torque command value of the permanent magnet type synchronous motor, a magnetic flux and a d-axis current command of the setting storage means, A q-axis current command calculator that calculates a q-axis current command from a current controller, a current controller that inputs the d-axis current, the q-axis current command, the d-axis current command, and the q-axis current command, and the permanent magnet synchronous motor Or the input voltage of A voltage detector that outputs a q-axis voltage perpendicular to the permanent magnet from the output of the voltage detector, a speed detector that detects the rotation speed of the permanent magnet type synchronous motor, The d-axis current, q
A temperature estimator for estimating a temperature change of the permanent magnet type synchronous motor from each value of the shaft current, the q-axis voltage, the rotation speed, the primary resistance and the magnetic flux of the setting storage means.
【００１０】また、前記設定記憶手段の磁束と前記温度
推定器出力とから、前記ｑ軸電流指令算出器に用いる磁
束を修正する磁束修正手段を具備する。Further, there is provided a magnetic flux correcting means for correcting the magnetic flux used for the q-axis current command calculator from the magnetic flux of the setting storage means and the output of the temperature estimator.
【００１１】本発明の実施例を図１に示し、以下、この
図について説明する。なお、前述の従来技術例と同一部
分の説明は省略する。速度検出器２は、永久磁石型同期
電動機１の回転速度ωを出力する。電圧検出器３は、永
久磁石型同期電動機１の入力電圧ｖを検出または推定す
る。電圧成分変換器１１は、入力電圧ｖから、永久磁石
型同期電動機１の永久磁石と垂直方向であるｑ軸電圧ｖ
ｑを出力する。An embodiment of the present invention is shown in FIG. 1 and will be described below with reference to FIG. The description of the same parts as those of the above-described prior art example is omitted. The speed detector 2 outputs the rotation speed ω of the permanent magnet type synchronous motor 1. The voltage detector 3 detects or estimates the input voltage v of the permanent magnet type synchronous motor 1. The voltage component converter 11 converts the input voltage v into a q-axis voltage v that is perpendicular to the permanent magnet of the permanent magnet type synchronous motor 1.
Output q.
【００１２】温度推定器１２は、ｄ軸電流ｉｄとｑ軸電
流ｉｑとｑ軸電圧ｖｑと回転速度ωとｄ軸インダクタン
スＬｄとｑ軸インダクタンスＬｑと一次抵抗Ｒと永久磁
石の磁束φとを入力し、永久磁石型同期電動機１の温度
変化Δθを出力する。磁束修正手段１３は、永久磁石の
磁束φと温度変化Δθとを入力し、修正された永久磁石
の磁束φｎを出力する。The temperature estimator 12 receives the d-axis current id, the q-axis current iq, the q-axis voltage vq, the rotation speed ω, the d-axis inductance Ld, the q-axis inductance Lq, the primary resistance R, and the magnetic flux φ of the permanent magnet. Then, the temperature change Δθ of the permanent magnet type synchronous motor 1 is output. The magnetic flux correction means 13 receives the magnetic flux φ of the permanent magnet and the temperature change Δθ, and outputs the corrected magnetic flux φn of the permanent magnet.
【００１３】ｑ軸電流指令算出器７が従来技術と異なる
点は、修正された永久磁石の磁束φｎを用いている点で
ある。設定記憶手段１０が従来技術と異なる点は、一次
抵抗Ｒを設定記憶している点である。The q-axis current command calculator 7 differs from the prior art in that the corrected magnetic flux φn of the permanent magnet is used. The difference between the setting storage means 10 and the prior art is that the primary resistance R is set and stored.
【００１４】ここで、本発明によって、前記問題点を解
決できる二つの理由について説明する。第一は、永久磁
石型同期電動機の温度変化が推定できる理由であり、第
二は磁束修正手段により効果を得る理由である。まず第
一に、永久磁石型同期電動機の温度変化が推定できる理
由についてであり、温度推定器１２の詳細について説明
する。永久磁石型同期電動機1のｑ軸電圧方程式は、次
式で表される。Here, two reasons why the above problems can be solved by the present invention will be described. The first is the reason why the temperature change of the permanent magnet type synchronous motor can be estimated, and the second is the reason that the effect is obtained by the magnetic flux correcting means. First, the reason why the temperature change of the permanent magnet type synchronous motor can be estimated, and the details of the temperature estimator 12 will be described. The q-axis voltage equation of the permanent magnet type synchronous motor 1 is represented by the following equation.
【００１５】 [0015]
【００１６】ここで、ｐは微分演算子である。（３）式
において、温度変化Δθによって変動するものは、永久
磁石の磁束φと一次抵抗Ｒとがある。温度変化Δθによ
る永久磁石の磁束φと一次抵抗Ｒの変動量は、温度変化
Δθと比例関係である。よって、実際の永久磁石の磁束
φｎと一次抵抗Ｒｎは、次式の関係で表すことができ
る。Here, p is a differential operator. In the equation (3), those that fluctuate due to the temperature change Δθ include the magnetic flux φ of the permanent magnet and the primary resistance R. The amount of change in the magnetic flux φ of the permanent magnet and the primary resistance R due to the temperature change Δθ is proportional to the temperature change Δθ. Therefore, the actual magnetic flux φn of the permanent magnet and the primary resistance Rn can be expressed by the following equation.
【００１７】 [0017]
【００１８】 [0018]
【００１９】ただし、ｇ１、ｇ２は温度係数である。よ
って、実際の一次抵抗Ｒｎの（４）式と永久磁石の磁束
φｎの（５）式を（３）式に代入すると、温度変化Δθ
は次式となる。Here, g1 and g2 are temperature coefficients. Therefore, when the equation (4) of the actual primary resistance Rn and the equation (5) of the magnetic flux φn of the permanent magnet are substituted into the equation (3), the temperature change Δθ
Is given by
【００２０】 [0020]
【００２１】よって温度推定器１２では、（６）式を変
形した次式の演算を行って温度変化Δθを推定する。Therefore, the temperature estimator 12 estimates the temperature change Δθ by performing the following equation obtained by modifying the equation (6).
【００２２】 [0022]
【００２３】ここで、Ｋは積分定数である。温度変化Δ
θが小さければ（７）式の[ ]中の演算値が正となって
温度変化Δθを増加させ、逆に温度変化Δθが大きけれ
ば（７）式の[ ]中の演算値が負となって温度変化Δθ
を減少させることで温度変化Δθを推定することができ
る。以上説明したように、ｄ軸電流ｉｄとｑ軸電流ｉｑ
とｑ軸電圧ｖｑと回転速度ωとｄ軸インダクタンスＬｄ
とｑ軸インダクタンスＬｑと一次抵抗Ｒと永久磁石の磁
束φとから永久磁石型同期電動機の温度変化Δθを推定
することができる。Here, K is an integration constant. Temperature change Δ
If θ is small, the calculated value in [] of equation (7) becomes positive and the temperature change Δθ increases, and if the temperature change Δθ is large, the calculated value in [] of equation (7) becomes negative. Temperature change Δθ
Is reduced, the temperature change Δθ can be estimated. As described above, the d-axis current id and the q-axis current iq
, Q-axis voltage vq, rotation speed ω, and d-axis inductance Ld
The temperature change Δθ of the permanent magnet type synchronous motor can be estimated from the q-axis inductance Lq, the primary resistance R, and the magnetic flux φ of the permanent magnet.
【００２４】第二に、磁束修正手段１３により効果を得
る理由について説明する。温度推定器１２によって永久
磁石型同期電動機の温度変化Δθが分かれば、（５）式
より温度変化Δθによる永久磁石の磁束の修正値φｎが
演算できる。Second, the reason why the effect is obtained by the magnetic flux correcting means 13 will be described. If the temperature change Δθ of the permanent magnet type synchronous motor is known by the temperature estimator 12, the correction value φn of the magnetic flux of the permanent magnet based on the temperature change Δθ can be calculated from Expression (5).
【００２５】[0025]
【発明の効果】以上述べたごとく、本発明によれば、永
久磁石の磁束と一次抵抗とを温度変化による変動に関わ
ることなく正しい値に修正できるようになり、永久磁石
型同期電動機での高精度なトルク制御が可能となって、
実用上おおいに有用である。As described above, according to the present invention, it is possible to correct the magnetic flux and the primary resistance of the permanent magnet to correct values without being affected by a change in temperature. Accurate torque control becomes possible,
It is very useful in practice.
【図１】本発明の一実施例を表すブロック図である。FIG. 1 is a block diagram illustrating an embodiment of the present invention.
【図２】従来方式の一実施例を表すブロック図である。FIG. 2 is a block diagram showing one embodiment of a conventional system.
１ 永久磁石型同期電動機 ２ 速度検出器 ３ 電圧検出器 ４ 電流検出器 ５ 電力変換器 ６ 電流制御器 ７ ｑ軸電流指令算出器 ８ ｄ軸電流指令算出器 ９ 電流成分変換器 １０ 設定記憶手段 １１ 電圧成分変換器 １２ 温度推定器 １３ 磁束修正手段 REFERENCE SIGNS LIST 1 permanent magnet synchronous motor 2 speed detector 3 voltage detector 4 current detector 5 power converter 6 current controller 7 q-axis current command calculator 8 d-axis current command calculator 9 current component converter 10 setting storage means 11 Voltage component converter 12 Temperature estimator 13 Magnetic flux correction means
Claims (2)
て、電流制御器出力を制御入力とする電力変換器を介し
て永久磁石型同期電動機に供給される入力電流を検出す
る電流検出器と、この電流検出器出力を前記永久磁石型
同期電動機の永久磁石と平行方向であるｄ軸電流と垂直
方向であるｑ軸電流とに変換出力する電流成分変換器
と、前記永久磁石の磁束及び一次抵抗を設定記憶する設
定記憶手段と、ｄ軸電流指令を算出するｄ軸電流指令算
出器と、前記永久磁石型同期電動機の出力トルク指令値
と前記設定記憶手段の磁束及びｄ軸電流指令とからｑ軸
電流指令を算出するｑ軸電流指令算出器と、前記ｄ軸電
流とｑ軸電流及びｄ軸電流指令とｑ軸電流指令とを入力
とする電流制御器と、前記永久磁石型同期電動機の入力
電圧を検出または推定する電圧検出器と、この電圧検出
器出力から前記永久磁石と垂直方向であるｑ軸電圧を出
力する電圧成分変換器と、前記永久磁石型同期電動機の
回転速度を検出する速度検出器と、前記のｄ軸電流、ｑ
軸電流、ｑ軸電圧、回転速度、設定記憶手段の一次抵抗
と磁束の各値とから前記永久磁石型同期電動機の温度変
化を推定する温度推定器とを具備したことを特徴とする
永久磁石型同期電動機の制御装置。1. A control device for a permanent magnet type synchronous motor, comprising: a current detector for detecting an input current supplied to the permanent magnet type synchronous motor via a power converter having a current controller output as a control input; A current component converter for converting and outputting a current detector output to a d-axis current parallel to the permanent magnet of the permanent magnet type synchronous motor and a q-axis current perpendicular to the permanent magnet; and a magnetic flux and a primary resistance of the permanent magnet. Setting storage means for setting and storing; a d-axis current command calculator for calculating a d-axis current command; and a q-axis based on an output torque command value of the permanent magnet type synchronous motor, a magnetic flux of the setting storage means, and a d-axis current command. A q-axis current command calculator that calculates a current command; a current controller that receives the d-axis current, the q-axis current, the d-axis current command, and the q-axis current command; and an input voltage of the permanent magnet type synchronous motor Detect or estimate A voltage detector that outputs a q-axis voltage that is perpendicular to the permanent magnet from the output of the voltage detector, a speed detector that detects a rotation speed of the permanent magnet type synchronous motor, D-axis current, q
A temperature estimator for estimating a temperature change of the permanent magnet synchronous motor from each value of a shaft current, a q-axis voltage, a rotation speed, a primary resistance and a magnetic flux of a setting storage means, Control device for synchronous motor.
器出力とから、前記ｑ軸電流指令算出器に用いる磁束を
修正する磁束修正手段を具備したことを特徴とする請求
項１記載の永久磁石型同期電動機の制御装置。2. The permanent memory according to claim 1, further comprising: a magnetic flux correction unit that corrects a magnetic flux used for the q-axis current command calculator based on the magnetic flux of the setting storage unit and the output of the temperature estimator. Control device for magnet type synchronous motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36894299A JP4548886B2 (en) | 1999-12-27 | 1999-12-27 | Control device for permanent magnet type synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36894299A JP4548886B2 (en) | 1999-12-27 | 1999-12-27 | Control device for permanent magnet type synchronous motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001186800A true JP2001186800A (en) | 2001-07-06 |
| JP4548886B2 JP4548886B2 (en) | 2010-09-22 |
Family
ID=18493157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP36894299A Expired - Lifetime JP4548886B2 (en) | 1999-12-27 | 1999-12-27 | Control device for permanent magnet type synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4548886B2 (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2390766A (en) * | 2002-07-11 | 2004-01-14 | Visteon Global Tech Inc | Vector control system for permanent magnet synchronous motor |
| WO2004011807A1 (en) * | 2002-07-25 | 2004-02-05 | Daikin Industries, Ltd. | Driver of compressor and refrigerator |
| JP2005521374A (en) * | 2002-03-22 | 2005-07-14 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Method and apparatus for determining rotor temperature in a PM synchronous machine |
| JP2006280141A (en) * | 2005-03-30 | 2006-10-12 | Honda Motor Co Ltd | Constant detector and control unit of motor for hybrid vehicle |
| JP2007068354A (en) * | 2005-09-01 | 2007-03-15 | Honda Motor Co Ltd | Controller of permanent magnet-type rotary electric machine |
| CN100463354C (en) * | 2004-03-24 | 2009-02-18 | 三菱电机株式会社 | Control device for permanent-magnet synchronous motor |
| KR100921115B1 (en) * | 2007-11-28 | 2009-10-12 | 현대자동차주식회사 | Control System Of Permanent Magnet Synchronous Motor And Method Thereof |
| US20120146683A1 (en) * | 2009-08-28 | 2012-06-14 | Nissan Motor Co., Ltd. Meidensha Corporation | Anomaly detector of permanent magnet synchronous electric motor |
| EP3002872A3 (en) * | 2014-09-30 | 2016-07-20 | Deere & Company | Methods of estimating rotor magnet temperature and systems thereof |
| CN106642516A (en) * | 2016-09-08 | 2017-05-10 | 四川长虹电器股份有限公司 | Method for detecting temperature of motor and air conditioning equipment |
| CN108138762A (en) * | 2015-09-11 | 2018-06-08 | 日立江森自控空调有限公司 | Have failure precognition, the air conditioner of detection unit and its failure precognition, the detection method of compressor |
| US10622925B2 (en) | 2014-12-12 | 2020-04-14 | Mitsubishi Electric Corporation | Control device and control method |
| DE102019126268A1 (en) * | 2019-09-30 | 2021-04-01 | Audi Ag | Determination of the rotor temperature of a PSM |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5420006B2 (en) | 2012-03-22 | 2014-02-19 | 三菱電機株式会社 | Synchronous machine controller |
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| JPH1118496A (en) * | 1997-06-18 | 1999-01-22 | Hitachi Ltd | Controller and control method for electric vehicle |
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| JPH0951700A (en) * | 1995-05-31 | 1997-02-18 | Meidensha Corp | Controlling device of rotary electric machine |
| JPH1118496A (en) * | 1997-06-18 | 1999-01-22 | Hitachi Ltd | Controller and control method for electric vehicle |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005521374A (en) * | 2002-03-22 | 2005-07-14 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Method and apparatus for determining rotor temperature in a PM synchronous machine |
| GB2390766A (en) * | 2002-07-11 | 2004-01-14 | Visteon Global Tech Inc | Vector control system for permanent magnet synchronous motor |
| WO2004011807A1 (en) * | 2002-07-25 | 2004-02-05 | Daikin Industries, Ltd. | Driver of compressor and refrigerator |
| EP2312160A3 (en) * | 2002-07-25 | 2014-08-13 | Daikin Industries, Ltd. | Drive unit for compressor and refrigerator |
| US7392158B2 (en) | 2002-07-25 | 2008-06-24 | Daikin Industries, Ltd. | Drive unit for compressor and refrigerator |
| CN100436823C (en) * | 2002-07-25 | 2008-11-26 | 大金工业株式会社 | Compressor internal state estimating device and air conditioner |
| CN100463354C (en) * | 2004-03-24 | 2009-02-18 | 三菱电机株式会社 | Control device for permanent-magnet synchronous motor |
| JP4574412B2 (en) * | 2005-03-30 | 2010-11-04 | 本田技研工業株式会社 | Hybrid vehicle motor constant detection device and hybrid vehicle motor control device |
| JP2006280141A (en) * | 2005-03-30 | 2006-10-12 | Honda Motor Co Ltd | Constant detector and control unit of motor for hybrid vehicle |
| JP4652176B2 (en) * | 2005-09-01 | 2011-03-16 | 本田技研工業株式会社 | Control device for permanent magnet type rotating electrical machine |
| JP2007068354A (en) * | 2005-09-01 | 2007-03-15 | Honda Motor Co Ltd | Controller of permanent magnet-type rotary electric machine |
| KR100921115B1 (en) * | 2007-11-28 | 2009-10-12 | 현대자동차주식회사 | Control System Of Permanent Magnet Synchronous Motor And Method Thereof |
| US20120146683A1 (en) * | 2009-08-28 | 2012-06-14 | Nissan Motor Co., Ltd. Meidensha Corporation | Anomaly detector of permanent magnet synchronous electric motor |
| US8791716B2 (en) * | 2009-08-28 | 2014-07-29 | Nissan Motor Co., Ltd. | Anomaly detector of permanent magnet synchronous electric motor |
| EP3002872A3 (en) * | 2014-09-30 | 2016-07-20 | Deere & Company | Methods of estimating rotor magnet temperature and systems thereof |
| US10622925B2 (en) | 2014-12-12 | 2020-04-14 | Mitsubishi Electric Corporation | Control device and control method |
| CN108138762A (en) * | 2015-09-11 | 2018-06-08 | 日立江森自控空调有限公司 | Have failure precognition, the air conditioner of detection unit and its failure precognition, the detection method of compressor |
| CN106642516A (en) * | 2016-09-08 | 2017-05-10 | 四川长虹电器股份有限公司 | Method for detecting temperature of motor and air conditioning equipment |
| DE102019126268A1 (en) * | 2019-09-30 | 2021-04-01 | Audi Ag | Determination of the rotor temperature of a PSM |
| US11502637B2 (en) | 2019-09-30 | 2022-11-15 | Audi Ag | Determination of the rotor temperature of a permanent magnet synchronous machine |
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