JP4179383B2 - 駆動力発生システムおよびそれを備える車両、ならびにその制御方法 - Google Patents
駆動力発生システムおよびそれを備える車両、ならびにその制御方法 Download PDFInfo
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- JP4179383B2 JP4179383B2 JP2007032114A JP2007032114A JP4179383B2 JP 4179383 B2 JP4179383 B2 JP 4179383B2 JP 2007032114 A JP2007032114 A JP 2007032114A JP 2007032114 A JP2007032114 A JP 2007032114A JP 4179383 B2 JP4179383 B2 JP 4179383B2
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- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
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- B60L15/025—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles characterised by the form of the current used in the control circuit using field orientation; Vector control; Direct Torque Control [DTC]
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Control Of Ac Motors In General (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Description
またさらに好ましくは、均等分担率は、複数の蓄電部の温度に依存して定められる。
図1は、この発明の実施の形態1に従う駆動力発生システムを備える車両100の要部を示す概略構成図である。
図2を参照して、電池ECU4の制御構造は、SOC算出部402,406と、許容電力決定部404,408とを含む。SOC算出部402は、蓄電部6−1のSOC1を算出するための部位であり、許容電力決定部404は、蓄電部6−1の充電許容電力Win1および放電許容電力Wout1を決定するための部位である。また、SOC算出部406は、蓄電部6−2のSOC2を算出するための部位であり、許容電力決定部408は、蓄電部6−2の充電許容電力Win2および放電許容電力Wout2を決定するための部位である。
図3を参照して、HV−ECU2の制御構造は、電力目標値決定部200と、電力目標値監視部202と、インバータ1制御系220と、インバータ2制御系222と、総和部224と、供給電力分配部226と、コンバータ1制御系230と、コンバータ2制御系232とを含む。
図4は、この発明の実施の形態1に従う駆動力発生システムの制御方法に係るフローチャートである。なお、図4に示すフローチャートは、HV−ECU2および電池ECU4において予め格納したプログラムを実行することで実現できる。
図5は、インバータ30−1の概略構成図である。
主母線MLとモータジェネレータ34−1および34−2との間で授受される電力を制御するために、モータジェネレータの回転座標上の電流値を用いるベクトル制御が実行される。ベクトル制御は、各相電流値を回転座標上のd軸(直軸)電流およびq軸(横軸)電流に変換して制御を行なうものであり、モータジェネレータで生じるトルク制御が容易に実現できるので、モータジェネレータで消費または生成される電力(トルク×回転数)についても制御が可能となる。
図6を参照して、コンバータ1制御系230は、d−q目標値生成部352と、減算部354,364と、PI制御部356,366と、回転座標変換部360と、変調部362と、回転座標逆変換部358とを含む。
図7は、コンバータ8−1,8−2の概略構成図である。
図9は、この発明の実施の形態2に従う駆動力発生システムを備える車両100Aの要部を示す概略構成図である。
−Win2≦Ps2*=(1−R1×R2)×ΣPc*≦Wout2
すなわち、分担電力目標値Ps1*,Ps2*は、充電許容電力Win1,Win2および放電許容電力Wout1,Wout2に加えて、電力分担比率R1,R2によって制限されることになる。そのため、充電許容電力合計値ΣWinおよび放電許容電力合計値ΣWoutに電力分担比率R1,R2を反映した均等分担率を乗じて、実質的な許容値を算出した上で、分担電力目標値Ps1*,Ps2*が決定される。
図11を参照して、HV−ECU2Aの制御構造は、図3に示すHV−ECU2の制御構造において、掛算部242,244,252,254と、均等分担率決定部240,250とをさらに設けるとともに、総和部224、供給電力分配部226、コンバータ1制御系230、コンバータ2制御系232に代えて、電圧目標値決定部234と、コンバータ制御系236とを設けたものである。
図12を参照して、均等分担率決定部240のマップには、SOC1,SOC2のうち低い方のSOCの大きさの区分毎に、SOC1とSOC2との偏差(SOC1−SOC2)に対応付けて均等分担率K1が規定される。図12には、一例として、SOCの大きさの区分を3分類した場合を示す。
図13を参照して、均等分担率決定部250のマップには、温度Tb1,Tb2のうち低い方の温度区分毎に、温度Tb1と温度Tb2との偏差(Tb1−Tb2)に対応付けて均等分担率K2が規定される。図13には、一例として、温度Tbの大きさの区分を3分類した場合を示す。
図14を参照して、コンバータ制御系236は、図8に示すコンバータ1制御系230と同様の構成であり、減算部302と、PI制御部304と、変調部306とを含む。
図15は、この発明の実施の形態2に従う駆動力発生システムの制御方法に係るフローチャートである。なお、図15に示すフローチャートは、HV−ECU2Aおよび電池ECU4において予め格納したプログラムを実行することで実現できる。
Claims (10)
- 電力線と、
前記電力線に対して並列接続された複数の蓄電部と、
電力と回転駆動力とを相互に変換可能な回転電機と、
前記電力線と前記回転電機との間に接続され、前記回転電機と前記電力線との間で電力変換を行なう電力変換部と、
前記複数の蓄電部の各々の充電状態に基づいて、前記複数の蓄電部の各々における充電または放電についての許容電力を決定する許容電力決定手段と、
走行状況に応じて、前記複数の蓄電部の各々における前記許容電力を合計した許容電力合計値の範囲内で、前記電力線と前記回転電機との間で授受されるべき電力目標値を決定する電力目標値決定手段とを備え、
前記電力変換部は、前記電力線と前記回転電機との間で授受される電力が前記電力目標値となるように電力変換動作を実行する、駆動力発生システム。 - 前記電力線と前記複数の蓄電部のうち対応する蓄電部との間にそれぞれ配置された複数の電圧変換部をさらに備え、
前記複数の電圧変換部のいずれか1つは、前記電力線の電圧を所定の電圧目標値とするための第1制御モードに従って電圧変換動作を実行し、
前記複数の電圧変換部の残余の各々は、対応の前記蓄電部と前記電力線との間で授受される電力を対応の分担電力目標値とするための第2制御モードに従って電圧変換動作を実行する、請求項1に記載の駆動力発生システム。 - 前記複数の蓄電部の各々が分担すべき電力が対応の前記許容電力を超過しないように、前記電力目標値に応じて前記複数の電圧変換部の残余の各々についての前記分担電力目標値を決定する分配手段をさらに備える、請求項2に記載の駆動力発生システム。
- 前記電力線と前記複数の蓄電部との間に配置された単一の電圧変換部をさらに備え、
前記電力目標値決定手段は、前記許容電力合計値に前記複数の蓄電部の内部抵抗値に応じた均等分担率を乗じた値を超過しないように、前記電力目標値を決定する、請求項1に記載の駆動力発生システム。 - 前記均等分担率は、前記複数の蓄電部の充電状態に依存して定められる、請求項4に記載の駆動力発生システム。
- 前記均等分担率は、前記複数の蓄電部の温度に依存して定められる、請求項4または5に記載の駆動力発生システム。
- 前記電圧変換部は、前記電力線の電圧を所定の電圧目標値とするための制御モードに従って電圧変換動作を実行する、請求項4〜6のいずれか1項に記載の駆動力発生システム。
- 前記駆動力発生システムは、
複数の前記回転電機と、
前記複数の回転電機にそれぞれ対応する複数の前記電力変換部とを備え、
前記複数の電力変換部の各々は、前記電力線と前記複数の回転電機との間で授受される電力の合計値が前記電力目標値となるように電力変換動作を実行する、請求項1〜7のいずれか1項に記載の駆動力発生システム。 - 請求項1〜8のいずれか1項に記載の駆動力発生システムを備えた車両。
- 駆動力発生システムの制御方法であって、
前記駆動力発生システムは、
電力線と、
前記電力線に対して電気的に並列接続された複数の蓄電部と、
電力と回転駆動力とを相互に変換可能な回転電機と、
前記電力線と前記回転電機との間に接続され、前記回転電機と前記電力線との間で電力変換を行なう電力変換部とを備え、
前記制御方法は、
前記複数の蓄電部の各々の充電状態に基づいて、前記複数の蓄電部の各々における充電または放電についての許容電力を決定するステップと、
走行状況に応じて、前記複数の蓄電部の各々における前記許容電力を合計した許容電力合計値の範囲内で、前記電力線と前記回転電機との間で授受されるべき電力目標値を決定するステップと、
前記電力線と前記回転電機との間で授受される電力が前記電力目標値となるように前記電力変換部における電力変換動作を制御するステップとを含む、駆動力発生システムの制御方法。
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US12/312,873 US8053921B2 (en) | 2007-02-13 | 2008-02-12 | Driving force generation system, vehicle using the system, and method for controlling the system |
PCT/JP2008/052609 WO2008099953A1 (ja) | 2007-02-13 | 2008-02-12 | 駆動力発生システムおよびそれを備える車両、ならびにその制御方法 |
EP08711433.6A EP2112014B1 (en) | 2007-02-13 | 2008-02-12 | Driving force generation system, vehicle using the system, and method for controlling the system |
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2008
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- 2008-02-12 WO PCT/JP2008/052609 patent/WO2008099953A1/ja active Application Filing
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JP2008199781A (ja) | 2008-08-28 |
EP2112014A4 (en) | 2013-04-24 |
EP2671750B1 (en) | 2018-03-28 |
US20100065351A1 (en) | 2010-03-18 |
CN101610930A (zh) | 2009-12-23 |
EP2671750A1 (en) | 2013-12-11 |
CN101610930B (zh) | 2011-12-28 |
EP2112014B1 (en) | 2016-12-21 |
WO2008099953A1 (ja) | 2008-08-21 |
US8053921B2 (en) | 2011-11-08 |
EP2112014A1 (en) | 2009-10-28 |
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