JPH0624402B2 - Electric vehicle control device - Google Patents
Electric vehicle control deviceInfo
- Publication number
- JPH0624402B2 JPH0624402B2 JP17463187A JP17463187A JPH0624402B2 JP H0624402 B2 JPH0624402 B2 JP H0624402B2 JP 17463187 A JP17463187 A JP 17463187A JP 17463187 A JP17463187 A JP 17463187A JP H0624402 B2 JPH0624402 B2 JP H0624402B2
- Authority
- JP
- Japan
- Prior art keywords
- constant speed
- frequency
- command
- speed
- inverter
- 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.)
- Expired - Lifetime
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は誘導電動機式電気車の制御装置の改良に係り、
特に、定速度運転を行う電気車の制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an improvement in a control device for an induction motor electric vehicle,
In particular, the present invention relates to a control device for an electric vehicle that operates at a constant speed.
従来の装置は、特開昭62-81904号公報に記載のように、
主幹制御器より定速運転指令が与えられたとき、この定
速運転指令に応じた速度指令信号と電気車の速度信号と
を比較し、その偏差に応じてすべり周波数信号を正負に
変化させることにより、任意の速度での定速度制御を行
う方式となつていた。The conventional device, as described in JP-A-62-81904,
When a constant speed operation command is given from the master controller, compare the speed command signal according to this constant speed operation command with the speed signal of the electric vehicle, and change the slip frequency signal to positive or negative depending on the deviation. Therefore, it has become a method of performing constant speed control at an arbitrary speed.
しかしながら、１パルスモード以外においては、第２図
のインバータ周波数に対するスイツチング周波数特性に
示すように、インバータの変調周波数が高くなる。この
領域で長時間定速運転を行うと、スイツチング周波数が
高いため、第３図に示すインバータのスナバ回路のスナ
バ抵抗器５９〜６０の通電時間が長くなり、上記スナバ
抵抗器５９〜６０の温度が上昇しすぎてしまい、安全性
に問題があつた。However, in the modes other than the 1-pulse mode, the modulation frequency of the inverter becomes high as shown in the switching frequency characteristic with respect to the inverter frequency in FIG. When the constant speed operation is performed for a long time in this region, the switching frequency is high, so that the energization time of the snubber resistors 59 to 60 in the snubber circuit of the inverter shown in FIG. 3 becomes long, and the temperature of the snubber resistors 59 to 60 is increased. Has risen too much, causing a safety issue.
ただし、一般の電気車においては、低速度で長時間運転
するのは事故でも発生せぬ限り起り得ぬことであり、こ
のような特殊なケースの為に大きな容量のスナバ抵抗を
設けておくことは不経済である。However, in a general electric vehicle, driving at low speed for a long time cannot occur unless it occurs even in an accident.Therefore, a snubber resistor with a large capacity should be provided for such a special case. Is uneconomical.
上記従来技術は、低速度の１パルスモード以外で定速運
転を長時間接続時のスナバ抵抗器の温度上昇については
配慮がされておらず、安全性に問題があつた。また、安
全を得るには大容量の不経済なスナバ抵抗器を備える必
要があつた。The above-mentioned prior art does not consider the temperature rise of the snubber resistor when the constant speed operation is connected for a long time in a mode other than the low speed 1-pulse mode, and there is a problem in safety. In addition, it is necessary to provide a large-capacity uneconomical snubber resistor in order to obtain safety.
本発明の目的は、自由な速度で、かつ安全に定速度運転
が可能な誘導電動機式電気車の制御装置を提供すること
にある。An object of the present invention is to provide a control device for an induction motor type electric vehicle that can be operated safely at a constant speed at free speed.
上記目的は、多パルスモードでの定速運転時間を計測
し、一定時間経過後、インバータ動作を停止させる手段
を設けることにより、達成される。The above-mentioned object is achieved by measuring a constant speed operation time in the multi-pulse mode and providing a means for stopping the inverter operation after a lapse of a certain time.
多パルスモードで、定速運転を行つても、自動的にイン
バータ動作を停止できる。これによつてスナバ抵抗器の
温度上昇を防止できるので、安全に運転することができ
る。In the multi-pulse mode, the inverter operation can be automatically stopped even if constant speed operation is performed. As a result, the temperature of the snubber resistor can be prevented from rising, so that the snubber resistor can be operated safely.
以下、本発明の一実施例を第１図により説明する。 An embodiment of the present invention will be described below with reference to FIG.
第１図において、直流電車線１より集電した直流は、イ
ンバータ２によつて可変電圧・可変周波数の交流に変換
され、誘導電動機３１，３２に給電される。In FIG. 1, the direct current collected from the direct-current train line 1 is converted into an alternating current having a variable voltage and a variable frequency by an inverter 2 and supplied to the induction motors 31 and 32.
車両速度相当信号ｒを得るために、パルス発生器４
１，４２が設けられ、それらの出力パルス数Ｎを周波数
信号ｒに変換するＮ／変換器５が設けられる。In order to obtain the vehicle speed equivalent signal r , the pulse generator 4
1, 42 are provided, and an N / converter 5 for converting the number N of output pulses thereof into a frequency signal r is provided.
主幹制御器６は、切位置，力行１，２，３および４ノツ
チの外に、定速ノツチ位置を備えている。The main controller 6 is provided with a constant speed notch position in addition to the cut position, power running 1, 2, 3 and 4 notches.
まず、力行ノツチでは、パターン発生器８により、一定
のすべり周波数パターンＳＰ１および電動機電流指令
ＩＭＰ１を発生させる。切換スイツチ９および１０は、
力行ノツチでは図示の状態にある。一方、電動機電流Ｉ
Ｍが電流検出器１２によつて検出され、比較器１３に
て、電動機電流指令ＩＭＰと比較される。この比較器１
３は、Ｓ補正信号を発生して、加算器１１の入力とな
る。この加算器１１の出力は、すべり周波数信号Ｓと
なり、加算器１４によつて、前述の車両速度相当信号
ｒに加算（力行）あるいは減算（回生）される。この加
算器１４の出力ＩＮＶはインバータ周波数指令として
ＰＷＭ変調部１５へ入力される。First, in the power running notch, the pattern generator 8 generates the constant slip frequency pattern SP1 and the electric motor current command I MP1 . The switching switches 9 and 10 are
The power running notch is in the illustrated state. On the other hand, the motor current I
M is detected by the current detector 12 and compared with the motor current command I MP by the comparator 13. This comparator 1
3 generates an S correction signal and becomes an input of the adder 11. The output of the adder 11 becomes the slip frequency signal S , and the adder 14 outputs the signal corresponding to the vehicle speed described above.
It is added (power running) or subtracted (regenerated) to r . The output INV of the adder 14 is input to the PWM modulator 15 as an inverter frequency command.
インバータ周波数指令ＩＮＶは、電気Ｖ対周波数の
比（Ｖ／）が一定となるような制御電圧ＶＣ１を発生
するＶ／変換器１６に入力される。力行ノツチでは、
ノツチ止め電圧発生器１７により、ノツチ止め電圧Ｖ
Ｃ２を発生する。低位優先回路１８は、上記の制御電圧
ＶＣ１とノツチ止め電圧ＶＣ２の低位を選択してインバ
ータ出力電圧指令ＶＣとしてＰＷＭ変調部１５へ出力す
る。ＰＷＭ変調部１５は、これらのインバータ周波数指
令ＩＮＶおよびインバータ出力電圧指令ＶＣに応じ
て、インバータ２の動作周波数及び変調度を制御する。The inverter frequency command INV is input to the V / converter 16 that generates the control voltage V C1 such that the electric V to frequency ratio (V /) becomes constant. In powering notch,
With the notch stop voltage generator 17, the notch stop voltage V
Generate C2 . The low level priority circuit 18 selects the low level of the control voltage V C1 and the notch stop voltage V C2 and outputs it to the PWM modulator 15 as an inverter output voltage command V C. The PWM modulation unit 15 controls the operating frequency and the modulation factor of the inverter 2 according to the inverter frequency command INV and the inverter output voltage command V C.
さて、ここで、主幹制御器６が、定速運転位置に投入さ
れたとすると、定速指令線１９は、切換スイツチ９およ
び１０を図示とは逆の開閉位置に切換える。定速指令が
目標速度設定器２０へ与えられると、そのときの車両速
度信号ｒをラツチし、速度指令信号Ｐを設定する。
比較増幅器２１は、上記速度指令信号Ｐと、車両速度
相当信号ｒとを比較し、その偏差Δに対して、第２
のすべり周波数信号ＳＰ２および第２の電流指令信号
ＩＭＰ２を発生する。これらは切換スイツチ９および１
０を介して、新たなすべり周波数指令ＳＰおよび電動
機電流指令ＩＭＰとなり、力行あるいは回生を行いなが
ら、定速運転する。Now, assuming that the master controller 6 is turned on at the constant speed operation position, the constant speed command line 19 switches the switching switches 9 and 10 to the open / close positions opposite to those shown in the drawing. When the constant speed command is given to the target speed setting device 20, the vehicle speed signal r at that time is latched and the speed command signal P is set.
The comparison amplifier 21 compares the speed command signal P with the vehicle speed equivalent signal r , and compares the speed command signal P with the vehicle speed corresponding signal r by the second value.
To generate a slip frequency signal SP2 and a second current command signal I MP2 . These are switching switches 9 and 1
Through 0, it becomes a new slip frequency command SP and a motor current command I MP , and constant speed operation is performed while performing power running or regeneration.
一方、定速指令は定速カウンタ２２にも与えられる。定
速カウンタ２２は、ＰＷＭ変調部１５で決定されたパル
スモードが１パルス以外のときカウントを開始し、一定
時間経過後、定速失効指令２７を発生する。定速失効指
令２７は、切換スイツチ２４を図示とは逆の閉位置に切
換え、インバータ停止信号をインバータ２に入力し、自
動的にインバータ動作を停止させる。On the other hand, the constant speed command is also given to the constant speed counter 22. The constant speed counter 22 starts counting when the pulse mode determined by the PWM modulator 15 is other than 1 pulse, and generates a constant speed invalidation command 27 after a lapse of a fixed time. The constant speed invalidation command 27 switches the switching switch 24 to the closed position opposite to that shown in the figure, inputs an inverter stop signal to the inverter 2, and automatically stops the inverter operation.
また、定速失効指令２７は、定速失効カウンタ２３に入
力される。定速失効カウンタ２３は、定速失効指令２７
が発生されてからカウントを開始し、一定時間，切換ス
イツチ２５および２６を図示とは逆の開位置に切換え
る。これにより、定速指令および力行１，２ノツチ指令
を一定時間受け付けないようにすることができる。Further, the constant speed revocation command 27 is input to the constant speed revocation counter 23. The constant speed revocation counter 23 has a constant speed revocation command 27.
The count is started after the occurrence of the switch, and the switching switches 25 and 26 are switched to the open position opposite to the illustrated position for a certain period of time. As a result, it is possible to prevent the constant speed command and the power running 1 / notch command from being accepted for a certain period of time.
力行１Ｎ及び２Ｎは、インバータの出力電圧を、モータ
の定格電圧よりも低く設定するモードであるため、この
ノツチでは、１パルスモードへは達しない。よつて一定
時間受け付けないようにする。Since the power runnings 1N and 2N are modes in which the output voltage of the inverter is set lower than the rated voltage of the motor, the 1-pulse mode is not reached in this notch. Please refrain from accepting for a certain period of time.
本実施例によれば、１パルスモード以外で定速運転を指
令されても、一定時間後、自動的にインバータ動作を停
止でき、さらに、インバータ動作停止後の運転も制限す
ることができるので、１パルスモード以外での定速運転
で発生するスナバ抵抗器の温度上昇を防止でき、安定に
運転することができる。According to the present embodiment, even if a constant speed operation is commanded in a mode other than the 1-pulse mode, the inverter operation can be automatically stopped after a certain period of time, and the operation after the inverter operation is stopped can be limited. It is possible to prevent the temperature rise of the snubber resistor that occurs during constant speed operation in modes other than the 1-pulse mode, and to operate stably.
本発明によれば、自動的に、スナバ抵抗器の温度上昇を
防止する運転を行うことができるので、安全に定速運転
ができる効果がある。According to the present invention, the operation of preventing the temperature rise of the snubber resistor can be automatically performed, so that there is an effect that the constant speed operation can be performed safely.
第１図は本発明による誘導電動機式電気車の制御装置の
一実施例ブロツク図、第２図はインバータ周波数に対す
るスイツチング周波数特性の一例図、第３図はインバー
タのスナバ回路の一例図を示す図である。 ２……電力変換器（インバータ）、６……主幹制御器、
９〜１０′切換スイツチ、１４……加（減）算器、１５
……ＰＷＭ変調部、２０……目標速度設定器、２１……
速度比較増幅器、２２……定速カウンタ、２３……定速
失効カウンタ、２４〜２６……切換スイツチ、３１〜３
２……誘導電動機、４１〜４２……速度検出手段、ｒ
……速度信号、Ｓ……すべり周波数信号。FIG. 1 is a block diagram of an embodiment of a control device for an induction motor type electric vehicle according to the present invention, FIG. 2 is an example diagram of a switching frequency characteristic with respect to an inverter frequency, and FIG. 3 is a diagram showing an example diagram of a snubber circuit of an inverter. Is. 2 ... power converter (inverter), 6 ... master controller,
9-10 'switching switch, 14 ... Adder / subtractor, 15
...... PWM modulator, 20 ...... Target speed setter, 21 ......
Speed comparator, 22 ... Constant speed counter, 23 ... Constant speed invalidation counter, 24-26 ... Switching switch, 31-3
2 ... Induction motor, 41-42 ... Speed detecting means, r
...... Speed signal, S …… Slip frequency signal.
Claims (2)
器と、この電力変換器によって給電される誘導電動機
と、車両の速度に相当する速度信号を得る速度検出手段
と、この速度信号にすべり周波数信号を加減算して上記
電力変換器の出力周波数を制御する周波数制御手段と、
上記周波数制御指令に比例するように上記電力変換器の
出力電圧を制御する電圧制御手段と、上記周波数制御手
段及び上記電圧制御手段の出力を入力してパルスモード
を選択しつつ上記インバータを制御するパルス幅変調手
段と、定速運転を指令する操作手段と、この定速指令に
応じて定速運転制御を行う手段とを備えた電気車の制御
装置において、上記パルスモードが多パルスモードであ
る場合における上記定速運転時間を計測し、一定時間経
過後、定速失効指令を発生する手段を備えた電気車の制
御装置。1. A power converter that outputs a variable voltage and a variable frequency, an induction motor fed by this power converter, speed detection means for obtaining a speed signal corresponding to the speed of the vehicle, and a slip for this speed signal. Frequency control means for controlling the output frequency of the power converter by adding and subtracting a frequency signal,
Voltage control means for controlling the output voltage of the power converter so as to be proportional to the frequency control command, and outputs of the frequency control means and the voltage control means are input to control the inverter while selecting a pulse mode. In a control device for an electric vehicle including pulse width modulation means, operation means for instructing constant speed operation, and means for performing constant speed operation control according to the constant speed command, the pulse mode is a multi-pulse mode. A control device for an electric vehicle comprising means for measuring the constant speed operation time in a case and generating a constant speed invalidation command after a predetermined time has elapsed.
失効指令を発生する手段は、スイッチングパルス数を計
数する手段を備え、定速運転中のスイッチングパルス数
の積算値があらかじめ定められた値に達したことに応動
してインバータ動作を停止させる手段である電気車の制
御装置。2. The means for generating the constant speed invalidation command according to claim 1, comprising means for counting the number of switching pulses, and an integrated value of the number of switching pulses during constant speed operation is predetermined. A control device for an electric vehicle that is a means for stopping the operation of the inverter in response to the reaching of the specified value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17463187A JPH0624402B2 (en) | 1987-07-15 | 1987-07-15 | Electric vehicle control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17463187A JPH0624402B2 (en) | 1987-07-15 | 1987-07-15 | Electric vehicle control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6419903A JPS6419903A (en) | 1989-01-24 |
| JPH0624402B2 true JPH0624402B2 (en) | 1994-03-30 |
Family
ID=15981970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17463187A Expired - Lifetime JPH0624402B2 (en) | 1987-07-15 | 1987-07-15 | Electric vehicle control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0624402B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2845093B2 (en) * | 1993-07-16 | 1999-01-13 | 三菱電機株式会社 | AC electric vehicle control device |
-
1987
- 1987-07-15 JP JP17463187A patent/JPH0624402B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6419903A (en) | 1989-01-24 |
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