JPH0576182A - Inverter device for vehicle - Google Patents
Inverter device for vehicleInfo
- Publication number
- JPH0576182A JPH0576182A JP3230662A JP23066291A JPH0576182A JP H0576182 A JPH0576182 A JP H0576182A JP 3230662 A JP3230662 A JP 3230662A JP 23066291 A JP23066291 A JP 23066291A JP H0576182 A JPH0576182 A JP H0576182A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- command
- vehicle
- control
- inverter device
- 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.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Landscapes
- Rectifiers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、車両用のインバータ装
置に係り、特に車両エンジンで駆動される回転電機の発
電電力を車両側負荷に供給する機能を備えた車両用イン
バータ装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle inverter device, and more particularly to a vehicle inverter device having a function of supplying electric power generated by a rotating electric machine driven by a vehicle engine to a vehicle load.
【０００２】[0002]
【従来の技術】車両用インバータとして、車両エンジン
に結合された回転電機を発電機として動作させ、この発
電電力を車両側の負荷やバッテリの充電のために供給
し、あるいはこの電力の一部を抵抗に消費させ電気ブレ
ーキをかける車両用インバータ装置がある。この種の従
来のインバータ装置の構成を図２に示す。2. Description of the Related Art As an inverter for a vehicle, a rotating electric machine coupled to a vehicle engine is operated as a generator and the generated electric power is supplied to charge a vehicle-side load or a battery, or a part of this electric power is supplied. There is an inverter device for vehicles that consumes resistance and applies an electric brake. The structure of a conventional inverter device of this type is shown in FIG.
【０００３】同図に示すように、インバータ装置１は、
車両側の電気負荷２やバッテリ３に接続されると共に、
車両エンジン６に結合された回転電機４に接続されてい
る。回転電機４が交流発電機として動作しているとき、
インバータ装置１はその発電電力を所定の直流電圧に変
換してバッテリ３を充電すると共に電気負荷２に供給す
る。すなわち、回転電機４の発生する交流電圧は、変換
器（インバータ）106により直流電圧Ｖｄに変換され、
直流リアクトル101 とダイオード116 とスイッチ回路10
2 からなるチョッパ部によって所定の直流電圧ＶB に変
換される。速度検出器５は回転電機４の回転速度に比例
した速度信号Ｎを検出し、電圧指令回路112 は回転速度
Ｎに応じて図３のような電圧指令Ｖｄ* を出力する。電
圧制御部113 は電圧指令Ｖｄ* と変換器106 から出力さ
れる直流電圧Ｖｄを比較してＶｄ＝Ｖｄ* となる電流指
令Ｉ* を出力する。電流制御部115 は電流指令Ｉ* と電
流検出器117 で検出された変換器106 への入力電流信号
Ｉを比較しＩ＝Ｉ* となるように変換器106 を制御す
る。また、電圧指令回路107 により所定の電圧指令値Ｖ
B * が設定され、電圧制御部108 は電圧指令ＶB * とチ
ョッパ部の出力電圧ＶB を比較しＶB ＝ＶB * となるＰ
ＷＭ信号ＰＷＣを出力し、ＰＷＭ制御部109 によりパル
ス幅変調が行われスイッチ回路102 をスイッチングす
る。As shown in FIG. 1, the inverter device 1 is
While being connected to the electric load 2 and the battery 3 on the vehicle side,
It is connected to a rotary electric machine 4 that is coupled to a vehicle engine 6. When the rotating electric machine 4 is operating as an AC generator,
The inverter device 1 converts the generated power into a predetermined DC voltage to charge the battery 3 and supply it to the electric load 2. That is, the AC voltage generated by the rotating electric machine 4 is converted into the DC voltage Vd by the converter (inverter) 106,
DC reactor 101, diode 116, and switch circuit 10
It is converted into a predetermined DC voltage V B by the chopper part composed of 2. The speed detector 5 detects the speed signal N proportional to the rotation speed of the rotating electric machine 4, and the voltage command circuit 112 outputs the voltage command Vd * as shown in FIG. 3 according to the rotation speed N. Is output. The voltage control unit 113 controls the voltage command Vd *. And the DC voltage Vd output from the converter 106 are compared, and Vd = Vd * Current command I * Is output. The current control unit 115 uses the current command I * And the input current signal I to the converter 106 detected by the current detector 117 are compared, and I = I * The converter 106 is controlled so that In addition, the voltage command circuit 107 outputs a predetermined voltage command value V
B * Is set, the voltage control unit 108 causes the voltage command V B * And the output voltage V B of the chopper section are compared, and V B = V B * Becomes P
The WM signal PWC is output, pulse width modulation is performed by the PWM control unit 109, and the switch circuit 102 is switched.
【０００４】制御抵抗103 と半導体スイッチ104 は車両
速度を減速する際に慣性エネルギーの一部を制御抵抗10
3 に吸収して制動トルクを補助するものである。この制
動トルクは直流電圧Ｖｄにより変化し、電圧低下に伴っ
て単位電流における制動トルクは大となる。The control resistor 103 and the semiconductor switch 104 partially control the inertia energy when reducing the vehicle speed.
It is absorbed by 3 and assists the braking torque. This braking torque changes depending on the DC voltage Vd, and the braking torque at a unit current increases as the voltage decreases.
【０００５】[0005]
【発明が解決しようとする課題】スイッチ回路102 と変
換器106 は電力用半導体が用いられその電力損失による
発熱で温度が上昇するので冷却が必要である。The switch circuit 102 and the converter 106 are required to be cooled because the power semiconductors are used and the temperature rises due to heat generation due to the power loss.
【０００６】この冷却は一般に風冷によって行われてお
り、車両が走行しているときは冷却風が充分に確保され
るが、徐行、停止の場合、冷却風が減少して放熱が低下
し温度が上昇するのでインバータ装置の車両側の負荷を
軽減しなければならないという問題がある。This cooling is generally performed by air cooling, and while the vehicle is traveling, a sufficient amount of cooling air can be secured, but when the vehicle is traveling slowly or stopped, the cooling air is reduced and heat dissipation is reduced, resulting in a temperature drop. Is increased, there is a problem that the load on the vehicle side of the inverter device must be reduced.
【０００７】停車時でも発電能力をあげようとする場合
は、インバータ装置の冷却フィンを大きくするか、冷却
ファン等を取付けなければならないが、車両用の電装用
品はいかに軽く、コンパクトに、又信頼性高く作るかが
ポイントになり冷却フィンを大きくするとか冷却ファン
を取付けるということは非常に問題となる。If the power generation capacity is to be increased even when the vehicle is stopped, the cooling fins of the inverter device must be enlarged or a cooling fan or the like must be attached. However, the electrical equipment for vehicles is light, compact and reliable. It is very important to make the cooling fins larger or to install a cooling fan.
【０００８】本発明の目的は、冷却フィンを大きくする
ことなく、又冷却ファンを用いることなく車両停車時の
発電能力をあげられる小形で信頼性の高いインバータ装
置を提供することにある。An object of the present invention is to provide a small and highly reliable inverter device capable of increasing the power generation capacity when the vehicle is stopped without increasing the size of cooling fins or using a cooling fan.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するた
め、本発明は、車両エンジンに結合された回転電機の発
電電力を受け、制御指令に応じて第１の直流電圧を得る
変換器と、該第１の直流電圧をスイッチング制御して第
２の直流電圧を得、所望の直流電力を車両側へ供給する
チョッパ部と、電圧指令と該第２の直流電圧を比較して
ＰＷＭ指令を出力する電圧制御部と、該ＰＷＭ指令に応
じてパルス幅制御されたスイッチング指令を出力し該チ
ョッパ部を制御するＰＷＭ制御部を備えた装置におい
て、該回転電機の回転速度が所定速度以下のとき、該チ
ョッパ部のスイッチング指令を常時オン状態の指令と
し、該電圧制御から出力されるＰＷＭ指令により該変換
器を制御する制御切換手段を設けた車両用インバータ装
置とする。To achieve the above object, the present invention provides a converter for receiving a power generated by a rotating electric machine coupled to a vehicle engine and obtaining a first DC voltage in accordance with a control command. A PWM command is output by comparing the voltage command and the second DC voltage with a chopper that supplies the desired DC power to the vehicle side by switching controlling the first DC voltage to obtain the second DC voltage. In a device including a voltage control unit for controlling, and a PWM control unit for controlling the chopper unit by outputting a switching command whose pulse width is controlled according to the PWM command, when the rotation speed of the rotating electric machine is equal to or lower than a predetermined speed, The vehicular inverter device is provided with a switching command of the chopper section that is always on, and a control switching unit that controls the converter by a PWM command output from the voltage control.
【００１０】[0010]
【作用】回転電機の回転速度が所定速度以下のとき、チ
ョッパ部は常時オン状態となって電圧制御機能は停止す
る。しかし、同時に電圧制御部が変換器の制御を開始す
るので継続して運転することができる。この場合、チョ
ッパ部のスイッチングによる損失がなくなるので冷却効
果が低下しても発電能力を低下することなく維持するこ
とができる。When the rotation speed of the rotating electric machine is less than or equal to the predetermined speed, the chopper section is always on and the voltage control function is stopped. However, since the voltage controller starts controlling the converter at the same time, the operation can be continued. In this case, since the loss due to the switching of the chopper portion is eliminated, even if the cooling effect is reduced, the power generation capacity can be maintained without being reduced.
【００１１】[0011]
【実施例】以下、本発明を図１に示す実施例について説
明する。図１において、図２と重複する部分には同符号
を付けその説明を省略する。EXAMPLE The present invention will be described below with reference to the example shown in FIG. In FIG. 1, the same parts as those in FIG. 2 are designated by the same reference numerals and the description thereof will be omitted.
【００１２】本実施例のインバータ装置１には、従来装
置に加えて、スイッチ回路102 を常時オン状態にする信
号を出すオン指令回路110 と、信号切換回路111,114
と、所定速度以下で切換指令を出す速度レベル検出部11
8 を設けている。信号切換回路111 は、スイッチ回路10
2 の制御信号をＰＷＭ制御回路109 かオン指令回路110
のいずれか一方を選択する。また、信号切換回路114
は、電流制御部115 の電流指令を電圧制御部113 か108
のいずれか一方を選択する。信号切換回路111,114はい
ずれも速度レベル検出部118 からの指令によって切り替
えられる。In addition to the conventional device, the inverter device 1 of this embodiment includes an ON command circuit 110 for outputting a signal for keeping the switch circuit 102 always in an ON state, and signal switching circuits 111, 114.
And a speed level detection unit 11 which issues a switching command at a predetermined speed or less.
8 are provided. The signal switching circuit 111 includes a switch circuit 10
The control signal of 2 is sent to the PWM control circuit 109 or the ON command circuit 110.
Select either one of. In addition, the signal switching circuit 114
Sends the current command of the current control unit 115 to the voltage control unit 113 or 108.
Select either one of. Each of the signal switching circuits 111 and 114 is switched by a command from the speed level detecting unit 118.
【００１３】上記構成において、回転速度が所定速度を
越えて運転しているとき、速度レベル検出部118 は信号
切換回路111,114 がＡ側を選択する指令を出力する。従
って、この場合は従来と同様の制御動作が行われる。し
かし、回転速度が低下して所定速度以下になると、速度
レベル検出部118 は信号切換回路111,114 がＢ側を選択
する指令を出力し、スイッチ回路102 はオン指令回路11
0 の制御信号により常時オン状態となり、チョッパとし
ての電圧制御の機能を停止する。しかし、同時に電圧制
御部108 の出力信号ＰＷＣが電流指令として電流制御部
115 に与えられ、チョッパ部の出力電圧ＶB は変換器10
6 によって制御される。これによりスイッチ回路102 の
オン・オフによるスイッチング損失がなくなり温度上昇
を抑制することができる。なお、速度レベル検出部118
の切り替え速度は、停車時のアイドリング回転速度より
少し高めで、風冷による冷却効果が期待できなくなる徐
行速度に設定するのが効果的である。In the above structure, when the rotational speed exceeds the predetermined speed, the speed level detection unit 118 outputs a command for the signal switching circuits 111 and 114 to select the A side. Therefore, in this case, the control operation similar to the conventional one is performed. However, when the rotation speed decreases and becomes equal to or lower than the predetermined speed, the speed level detection unit 118 outputs a command for the signal switching circuits 111 and 114 to select the B side, and the switch circuit 102 causes the ON command circuit 11 to operate.
The control signal of 0 always turns on and stops the voltage control function as a chopper. However, at the same time, the output signal PWC of the voltage control unit 108 is used as a current command to control the current control unit.
115, and the output voltage V B of the chopper is converted to the converter 10
Controlled by 6. As a result, the switching loss due to the ON / OFF of the switch circuit 102 is eliminated and the temperature rise can be suppressed. The speed level detector 118
It is effective to set the switching speed to a little higher than the idling rotation speed when the vehicle is stopped, and set to the creeping speed at which the cooling effect by air cooling cannot be expected.
【００１４】[0014]
【発明の効果】本発明によれば、エンジン回転数の低い
アイドリング状態・車両停車状態のとき、スイッチング
損失がなくなり発電能力を確保することができ、コンパ
クトで軽く信頼性の高い車両用インバータ装置を提供す
ることができる。According to the present invention, when the engine speed is low, the switching loss is eliminated and the power generation capacity can be secured when the vehicle is in the idling state and the vehicle is stopped, and the compact, lightweight and highly reliable vehicle inverter device is provided. Can be provided.
【図１】本発明による車両用インバータ装置の実施例の
構成図。FIG. 1 is a configuration diagram of an embodiment of a vehicle inverter device according to the present invention.
【図２】従来の車両用インバータ装置の構成図。FIG. 2 is a configuration diagram of a conventional vehicle inverter device.
【図３】電圧指令回路112 の特性図。FIG. 3 is a characteristic diagram of a voltage command circuit 112.
１…インバータ装置、 ２…車両側電気負荷、 ３
…バッテリ、４…回転電機、 ５…速度検出
器、 ６…車両エンジン、101 …直流リアクト
ル、 102 …スイッチ回路、 103 …制動抵抗器、10
4 …半導体スイッチ、 105 …平滑コンデンサ、 106
…変換器、107 …電圧指令回路、 108,113 …電圧制
御部、 109 …ＰＷＭ制御回路、110 …オン指令回路、
111,114 …信号切換回路、112 …電圧指令回路、116
…ダイオード、 117 …電流検出器、 115 …
電流制御部。1 ... Inverter device, 2 ... Vehicle side electric load, 3
... battery, 4 ... rotary electric machine, 5 ... speed detector, 6 ... vehicle engine, 101 ... DC reactor, 102 ... switch circuit, 103 ... braking resistor, 10
4… Semiconductor switch, 105… Smoothing capacitor, 106
... Converter, 107 ... Voltage command circuit, 108, 113 ... Voltage control unit, 109 ... PWM control circuit, 110 ... ON command circuit,
111, 114 ... signal switching circuit, 112 ... voltage command circuit, 116
… Diode, 117… Current detector, 115…
Current control unit.
Claims (1)
電電力を受け、制御指令に応じて第１の直流電圧を得る
変換器と、該第１の直流電圧をスイッチング制御して第
２の直流電圧を得、所望の直流電力を車両側へ供給する
チョッパ部と、電圧指令と該第２の直流電圧を比較して
ＰＷＭ指令を出力する電圧制御部と、該ＰＷＭ指令に応
じてパルス幅制御されたスイッチング指令を出力し該チ
ョッパ部を制御するＰＷＭ制御部を備えた装置におい
て、該回転電機の回転速度が所定速度以下のとき、該チ
ョッパ部のスイッチング指令を常時オン状態の指令と
し、該電圧制御部から出力されるＰＷＭ指令により該変
換器を制御する制御切換手段を設けたことを特徴とする
車両用インバータ装置。1. A converter for receiving electric power generated by a rotating electric machine coupled to a vehicle engine to obtain a first DC voltage according to a control command, and a second DC for switching control of the first DC voltage. A chopper section that obtains a voltage and supplies desired DC power to the vehicle side, a voltage control section that compares a voltage command with the second DC voltage and outputs a PWM command, and pulse width control according to the PWM command In a device including a PWM control unit that outputs the switching command that is output to control the chopper unit, when the rotation speed of the rotating electric machine is equal to or lower than a predetermined speed, the switching command of the chopper unit is a command that is always on, and An inverter device for a vehicle, comprising control switching means for controlling the converter according to a PWM command output from a voltage control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3230662A JP3015533B2 (en) | 1991-09-11 | 1991-09-11 | Inverter device for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3230662A JP3015533B2 (en) | 1991-09-11 | 1991-09-11 | Inverter device for vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0576182A true JPH0576182A (en) | 1993-03-26 |
| JP3015533B2 JP3015533B2 (en) | 2000-03-06 |
Family
ID=16911330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3230662A Expired - Lifetime JP3015533B2 (en) | 1991-09-11 | 1991-09-11 | Inverter device for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3015533B2 (en) |
-
1991
- 1991-09-11 JP JP3230662A patent/JP3015533B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP3015533B2 (en) | 2000-03-06 |
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