JP2008017677A - 電源システムおよびそれを備える車両 - Google Patents
電源システムおよびそれを備える車両 Download PDFInfo
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- JP2008017677A JP2008017677A JP2006189214A JP2006189214A JP2008017677A JP 2008017677 A JP2008017677 A JP 2008017677A JP 2006189214 A JP2006189214 A JP 2006189214A JP 2006189214 A JP2006189214 A JP 2006189214A JP 2008017677 A JP2008017677 A JP 2008017677A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
- H02P5/74—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more ac dynamo-electric motors
- H02P5/747—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more ac dynamo-electric motors mechanically coupled by gearing
- H02P5/753—Differential gearing
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- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
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- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
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- B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
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- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
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- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
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- H02J7/1469—Regulation of the charging current or voltage otherwise than by variation of field
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- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1582—Buck-boost converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
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- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1584—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60L2210/00—Converter types
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- 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
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- Sustainable Energy (AREA)
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- Dc-Dc Converters (AREA)
- Hybrid Electric Vehicles (AREA)
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Abstract
【解決手段】コンバータCONV1に対応する積分要素は、コンバータCONV1が電圧変換動作を停止される期間(時刻tm1〜時刻tm2)においても積分動作を継続するが、この期間において積分された積分出力は無効データである。そのため、コンバータCONV1が電圧変換動作を再開する時刻tm2において、当該積分要素から無効な積分出力が出力されてしまうと、コンバータCONV1は、何らの保証もない制御値によって制御されることになる。そこで、上述したように、電圧変換動作制御部は、当該積分要素にリセット信号を与えて、格納される積分出力INT1をゼロクリアする。
【選択図】図6
Description
好ましくは、履歴要素は、制御対象の状態値に基づいて学習値を決定する学習要素を含む。
図3は、片側停止モードにおいて駆動力発生部3との間で授受される電力を示す概略図である。
図3(b)は、コンバータCONV1の電力変換動作が停止される場合を示す。
図4は、本発明の実施の形態に従う制御部2における制御構造を示すブロック図である。
図5は、積分要素64−1のより詳細な構成および動作を示す図である。
図5(b)は、積分要素64−1の動作を示す図である。
図6は、片側停止モードにおける積分要素64−1,64−2の積分出力INT1,INT2の変化の一例を示す図である。
図6(b)は、積分要素64−1から出力される積分出力INT1の時間変化を示す図である。
図7は、本発明の実施の形態に従う処理を実現するためのフローチャートである。
上述の本発明の実施の形態においては、制御系に含まれる積分要素が格納する積分出力をゼロクリアする構成について説明したが、片側停止モードにおける負荷装置への供給電圧をより安定化させるために、コンバータ間の電圧変換動作の連続性を保つような初期値を積分要素にセットしてもよい。
本発明の実施の形態の第1変形例に従う指令生成部54Aは、片側停止モードにおいて、切換えられるコンバータ間の電圧変換動作の連続性が保たれるように、積分要素64−1,64−2にセットする初期値を決定する。
G1(s)×DTY1(t)=G2(s)×DTY2(t)
が成立しなければならない。
操作出力DTY2(0)=G1(s)×DTY1/G2(s)
として決定することができる一方、コンバータCONV2からコンバータCONV1へ切換える際に、初期値とすべき操作出力DTY1(0)は、
操作出力DTY1(0)=G2(s)×DTY2/G1(s)
として決定することができる。
操作出力DTY1=Kp1×(1+1/sTi1)×(Vh*−Vh)
操作出力DTY2=Kp2×(1+1/sTi2)×(Vh*−Vh)
の関係があるので、コンバータ切換時の初期値とすべき操作出力DTY1(0),DTY2(0)が決定されれば、積分要素64−1,64−2にセットすべき初期値(上式の「sTi1」および「sTi2」に相当)を一意に決定することができる。
図10は、本発明の実施の形態の第1変形例に従う処理を実現するためのフローチャートである。
上述の本発明の実施の形態においては、履歴要素の一例として積分要素を含む制御系について説明したが、積分要素以外の履歴要素を用いることもできる。
上述の本発明の実施の形態においては、2個の蓄電部を有する電源システムについて例示したが、3個以上の蓄電部を有する電源システムについて適用可能である。
Claims (10)
- 各々が充放電可能に構成された複数の蓄電部を有する電源システムであって、
負荷装置と前記電源システムとの間で電力を授受可能に構成された電力線と、
前記複数の蓄電部と前記電力線との間にそれぞれ設けられ、各々が対応の前記蓄電部と前記電力線との間で電圧変換動作を行なう複数の電圧変換部とを備え、
前記複数の電圧変換部の各々は、履歴に依存して定まる制御値を出力する履歴要素を含む制御系に従って前記電圧変換動作を実行し、
前記電源システムは、
前記負荷装置からの電力要求に応じて、前記複数の電圧変換部に含まれる少なくとも1個の電圧変換部の電圧変換動作を停止させる動作モードを選択する動作モード選択手段と、
前記動作モードの選択時に、前記複数の電圧変換部の各々についての電圧変換動作の実行および停止を対応する前記蓄電部の状態値に基づいて制御する電圧変換動作制御手段とを備え、
前記電圧変換動作制御手段は、停止中の電圧変換部に対して前記電圧変換動作を再開させる際に、再開前に対応の前記履歴要素に格納されている前記制御値とは独立に決定される所定の初期値を対応の前記履歴要素にセットする、電源システム。 - 前記複数の電圧変換部は、第1および第2の電圧変換部を含み、
前記動作モードは、前記第1および第2の電圧変換部の一方の電圧変換動作を停止させるとともに、他方に電圧変換動作を実行させる片側停止モードである、請求項1に記載の電源システム。 - 前記電圧変換動作制御手段は、前記電圧変換動作を再開する電圧変換部に対応の前記履歴要素に格納される前記制御値をゼロクリアする、請求項1または2に記載の電源システム。
- 前記電圧変換動作制御手段は、前記電圧変換動作を実行させる電圧変換部を前記第1の電圧変換部から前記第2の電圧変換部に切換える際に、前記第1の電圧変換部に対応の前記履歴要素に格納される前記制御値に基づいて、切換前後における前記第1の電圧変換部と前記第2の電圧変換部との間の電圧変換動作の連続性が保たれるように、前記第2の電圧変換部に対応の前記履歴要素に前記所定の初期値をセットする、請求項2に記載の電源システム。
- 前記履歴要素は、積分要素を含む、請求項1〜4のいずれか1項に記載の電源システム。
- 前記履歴要素は、制御対象の状態値に基づいて学習値を決定する学習要素を含む、請求項1〜4のいずれか1項に記載の電源システム。
- 各々が充放電可能に構成された複数の蓄電部を有する電源システムと、
前記電源システムから供給される電力を受けて駆動力を発生する駆動力発生部とを備える車両であって、
前記電源システムは、
負荷装置と前記電源システムとの間で電力を授受可能に構成された電力線と、
前記複数の蓄電部と前記電力線との間にそれぞれ設けられ、各々が対応の前記蓄電部と前記電力線との間で電圧変換動作を行なう複数の電圧変換部とを備え、
前記複数の電圧変換部の各々は、履歴に依存して定まる制御値を出力する履歴要素を含む制御系に従って前記電圧変換動作を実行し、
前記電源システムは、
前記負荷装置からの電力要求に応じて、前記複数の電圧変換部に含まれる少なくとも1個の電圧変換部の電圧変換動作を停止させる動作モードを選択する動作モード選択手段と、
前記動作モードの選択時に、前記複数の電圧変換部の各々についての電圧変換動作の実行および停止を対応する前記蓄電部の状態値に基づいて制御する電圧変換動作制御手段とを備え、
前記電圧変換動作制御手段は、停止中の電圧変換部に対して前記電圧変換動作を再開させる際に、再開前に対応の前記履歴要素に格納されている前記制御値とは独立に決定される所定の初期値を対応の前記履歴要素にセットする、車両。 - 前記複数の電圧変換部は、第1および第2の電圧変換部を含み、
前記動作モードは、前記第1および第2の電圧変換部の一方の電圧変換動作を停止させるとともに、他方に電圧変換動作を実行させる片側停止モードである、請求項7に記載の車両。 - 前記電圧変換動作制御手段は、前記電圧変換動作を再開する電圧変換部に対応の前記履歴要素に格納される前記制御値をゼロクリアする、請求項7または8に記載の車両。
- 前記電圧変換動作制御手段は、前記電圧変換動作を実行させる電圧変換部を前記第1の電圧変換部から前記第2の電圧変換部に切換える際に、前記第1の電圧変換部に対応の前記履歴要素に格納される前記制御値に基づいて、切換前後における前記第1の電圧変換部と前記第2の電圧変換部との間の電圧変換動作の連続性が保たれるように、前記第2の電圧変換部に対応の前記履歴要素に前記所定の初期値をセットする、請求項9に記載の車両。
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