JP4958846B2 - 間歇受電を行う車両用制御装置 - Google Patents
間歇受電を行う車両用制御装置 Download PDFInfo
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- 239000003990 capacitor Substances 0.000 description 4
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- B60L9/18—Electric propulsion with power supply external to the vehicle using ac induction motors fed from dc supply lines
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- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
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Description
L・di・dt=V・・・・・・・(1)
ここでtは時間を示す。
ton:Gate bがオンの時間
toff:Gate bがオフの時間
tc:Gate bのパルスの出力される周期
ΔIon:ton時間の間でのIchの増分
ΔIoff:toff時間の間でのIchの増分
ΔIc:tc時間の間でのIchの増分
Vav:tc時間の間でのVbの平均値
ton、toffが十分小さいとして、(1)式を図2の電圧変換用リアクトル8に適用すれば、Gate bがオンのときはIGBT6aがオフしIGBT6bがオンしているので、
Gate bがオフのときはIGBT6aがオンしIGBT6bがオフしているので、
L・ΔIoff=(Vch−Vfc)・toff・・・・(3)
である。
tc=ton+toff・・・・・・・・・・・・(4)
ΔIc=ΔIon+ΔIoff・・・・・・・・・(5)
Vav=Vfc・toff/tc・・・・・・・・・・(6)
であるから、(2)式と(3)式の和を取り整理すると、
L・ΔIc=(Vch−Vav)・tc・・・・・・・・(7)
が得られる。
(1)回生時かつSOCが図11の閾値3p以上の時
(2)回生時かつSOCが図11の閾値3p以下の時
(3)非回生時かつSOCが図11の閾値3p以上の時
(4)非回生時かつSOCが図11の閾値3p以下の時
したがって図4と同じ制御構成となり動作も図4で説明したように閾値3まで充電が可能である。
2 フィルタリアクトル
3 フィルタコンデンサ
4 インバータ装置
5 主電動機
6 チョッパ装置
6a、6b IGBT
7 蓄電装置
8 電圧変換用リアクトル
9,11 直流電圧検出器
10,12 直流電流検出器
13 充放電制御装置
14 インバータ制御装置
16 蓄電制御装置
17 情報伝達手段
21 充放電制御部
22,23,55 論理積機能
24 反転機能
41,41a 基準値発生器
42,45 減算器
43 係数器
44 リミット機能
46 ACR(電流制御部)
47 PWM変調器
48,48a,50 パターン発生器
49,51 乗算器
52,56 スイッチ
53 回生検出部
54 比較器
Claims (8)
- 電車線から集電装置を介して直流電圧の供給を受け主電動機の駆動を制御するインバータ装置と、このインバータ装置の直流側に接続された半導体スイッチング装置と、この半導体スイッチング装置に接続された蓄電装置と、前記半導体スイッチング装置が接続されたインバータ装置の直流側の電圧を計測する直流電圧検出手段と、前記直流電圧検出手段の出力に応じて前記半導体スイッチング装置を制御する充放電制御部とを有し、
前記充放電制御部は、充電量を所定の値に保つように前記半導体スイッチング装置を制御する制御部と、前記インバータ装置の直流側と前記半導体スイッチング装置の接続点の電圧を所定の範囲に保つよう前記半導体スイッチング装置を制御する制御部とを備えており、
電車線の設備区間で電車線から集電装置を介して直流電圧の供給を受けて、前記直流電圧検出手段の検出値が電車線電源送り出し電圧以上の場合に、前記インバータ装置との接続点に対して前記蓄電装置から充放電を行い蓄電装置の充電量を所定の値に保つように前記半導体スイッチング装置を制御し、
電車線非設備区間で電車線から分離し集電装置を介して直流電圧の供給を受けられず前記直流電圧検出手段の検出値が電車線電源送り出し電圧と前記インバータ装置の制御可能な最低直流入力電圧との間に設定された特定電圧範囲内となる場合に、前記直流電圧検出手段の出力に応じて、前記蓄電装置から充放電を行い前記インバータ装置の直流側と前記半導体スイッチング装置の接続点の電圧を前記特定電圧範囲内に設定される制御目標電圧値近傍に保つよう前記半導体スイッチング装置を制御することを特徴とする間歇受電を行う車両用制御装置。 - 請求項1に記載の車両用制御装置において、
前記蓄電装置の端子電圧の最大値はインバータ装置が制御可能な最低直流入力電圧値よりも低い電圧となるよう選択され、
かつ前記半導体スイッチング装置は、前記直流電圧検出手段が計測した前記インバータ装置の直流側の電圧が、前記特定電圧範囲においては、前記インバータ装置の直流側と前記半導体スイッチング装置の接続点への電流の出入りを制御し該接続点の電圧を前記特定電圧範囲内に設定された制御目標電圧値近傍に保つように制御する定電圧制御モードの制御を行い、
前記直流電圧検出手段が計測した前記インバータ装置の直流側の電圧が、前記特定電圧範囲よりも高い電圧範囲では、前記蓄電装置への充電電流が最大充電許容電流値に制限される定電流充電制御モードの制御を行い、前記直流電圧検出手段が計測した前記インバータ装置の直流側の電圧が、前記特定電圧範囲よりも低い電圧範囲では、前記蓄電装置からの放電電流が最大放電許容電流値に制限される定電流放電制御モードの制御を行うことを特徴とする車両用制御装置。 - 請求項2に記載の車両用制御装置において、
前記充電電流に対する定電流充電制御モードにおける制御目標値は、前記蓄電装置に許容される最大充電電流値に係わる値であり、前記放電電流に対する定電流放電制御モードにおける制御目標値は、前記蓄電装置に許容される最大放電電流値に係わる値であることを特徴とする車両用制御装置。 - 請求項3に記載の車両用制御装置において、
前記充電電流に対する定電流充電制御モードにおける前記制御目標値は、前記蓄電装置の蓄電量が許容される上限値以上となった時には零とされ、前記放電電流に対する定電流放電制御モードにおける前記制御目標値は、前記蓄電装置の蓄電量が許容される下限値以下となった時には零とされることを特徴とする車両用制御装置。 - 請求項4に記載の車両用制御装置において、
前記充電電流に対する定電流充電制御モードにおける制御目標値は、前記蓄電装置の蓄電量が許容内で、前記蓄電量が許容される上限値近傍となった時には前記蓄電装置に許容される最大充電電流値に係わる値よりも低減され、前記放電電流に対する定電流放電制御モードにおける制御目標値は、前記蓄電装置の蓄電量が許容内で、前記蓄電量が許容される下限値近傍となった時には前記蓄電装置に許容される最大充電電流値に係わる値よりも低減されることを特徴とする車両用制御装置。 - 請求項2に記載の車両用制御装置において、
前記インバータ装置は制御可能な最低直流入力電圧値の高電圧側近傍で入力電圧と制御可能な最低直流入力電圧値との差分に対応して前記インバータ装置の出力を低減する機能を有することを特徴とする車両用制御装置。 - 請求項4に記載の車両用制御装置において、
前記蓄電装置の蓄電量の上限値は回生ブレーキ作用時以外の場合と回生ブレーキ作用時の場合を区別して設定され、回生ブレーキ作用時以外の前記蓄電装置の蓄電量が許容される上限値は、回生ブレーキ作用時の前記蓄電装置の蓄電量が許容される上限値より低く設定されることを特徴とする車両用制御装置。 - 請求項7に記載の車両用制御装置において、
前記回生ブレーキ作用時以外で、かつ前記蓄電装置の蓄電量が回生ブレーキ作用時以外の場合における蓄電量の許容される上限値を超えている時、前記インバータ装置の直流側と前記半導体スイッチング装置の接続点の電圧に対する定電圧制御モードにおける制御目標電圧を送り出し電圧近傍の値に切り替えることを特徴とする車両用制御装置。
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