JP2009296731A - 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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Abstract
【解決手段】インバータ装置の直流側にチョッパ装置と蓄電装置を備え、電車線から集電装置を介して直流電圧の供給を受けている時は、チョッパ装置によりインバータ装置の入力側と蓄電装置の間で充放電を行い蓄電装置の充電量を所定の値に保つよう制御し、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ない時は、チョッパ装置によりインバータ装置の入力側と蓄電装置の間で充放電を行い、インバータ装置の直流側入力電圧をインバータ装置の動作可能な所定の範囲に保つよう制御する。
【選択図】図1
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を有し、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の制御モードを切り替えることにより、電車線から集電装置を介して直流電圧の供給を受けている時は、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ない時は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電車線に電力を供給する地上電源システムの送り出し電圧に係わる電圧値とインバータ装置が制御可能な最低直流入力電圧値の間の電圧範囲内の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に保つように制御する定電圧制御モードとし、前記特定電圧範囲よりも高い電圧範囲では蓄電装置への充電電流に対し定電流充電制御するモードとし、前記特定電圧範囲よりも低い電圧範囲では蓄電装置からの放電電流に対し定電流放電制御するモードとす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、
前記充電電流に対する定電流充電制御の制御目標値は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、放電電流に対する定電流放電制御の制御目標値は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の制御目標値は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の制御目標値は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の制御目標値は、蓄電装置の蓄電量が許容内で、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の制御目標値は、蓄電装置の蓄電量が許容内で、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の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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