JP2019103263A - Charging device - Google Patents

Charging device Download PDF

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JP2019103263A
JP2019103263A JP2017232400A JP2017232400A JP2019103263A JP 2019103263 A JP2019103263 A JP 2019103263A JP 2017232400 A JP2017232400 A JP 2017232400A JP 2017232400 A JP2017232400 A JP 2017232400A JP 2019103263 A JP2019103263 A JP 2019103263A
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chargers
charger
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JP6852661B2 (en
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圭 内田
Kei Uchida
圭 内田
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Toyota Industries Corp
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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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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    • Y02E60/10—Energy storage using batteries

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Abstract

To provide a charging device improved in performance of response to a target total power while exerting flicker control.SOLUTION: A charging device 1 comprises: two chargers 11 that are connected in parallel and that output power according to input power command values; a flicker control unit 12 that increases a total power command value to a target total power value stepwise for each maximum command width; a distribution unit 13 that outputs the target power value to each charger according to a distribution map in which when the total output power value is equal to or smaller than the maximum possible output value of the first charger, the total output power value is assigned to the first charger, when the total output power value exceeds the maximum possible output value of the first charger, the maximum possible output value is assigned to the first charge, and residual power value is assigned to the second charger; and a redistribution unit 14 that outputs power command values larger than zero to the two chargers if a power command value to be output to one charger is zero when the target power values of the two chargers are larger than zero and the total power command value is distributed to the two chargers according to the distribution map.SELECTED DRAWING: Figure 1

Description

本発明は、充電装置に関する。   The present invention relates to a charging device.

充電装置から二次電池へ高電力を出力するために、充電装置は、並列接続した複数の充電器を備えることがある。並列接続した複数の充電器からの総出力電力を制御するための総電力指令の値は、各充電器に入力する系統電力のフリッカを抑制するために、目標総電力値まで階段状に上昇あるいは下降するように設定される。また、入力した系統電力から生成される総出力電力の効率を向上させるために、総電力指令値に対応する総出力電力が可及的に少ない数の充電器によって生成されるように、分配マップに従って複数の充電器に総電力指令値は分配される。各充電器は、入力した電力指令値に対する所定の追随性能を有し、入力した電力指令値に対応する出力電力を追随性能に従って出力する。   In order to output high power from the charging device to the secondary battery, the charging device may include a plurality of chargers connected in parallel. The value of the total power command for controlling the total output power from a plurality of chargers connected in parallel increases stepwise to the target total power value or suppresses the flicker of the system power input to each charger or It is set to descend. Also, in order to improve the efficiency of the total output power generated from the input system power, the distribution map so that the total output power corresponding to the total power command value is generated by as few chargers as possible. The total power command value is distributed to the plurality of chargers according to. Each charger has a predetermined tracking performance with respect to the input power command value, and outputs output power corresponding to the input power command value according to the tracking performance.

なお、関連する技術として特許文献１及び２に記載の技術が知られている。   In addition, the technique of patent document 1 and 2 is known as a related technique.

特開２０１６−８６６０９号公報JP, 2016-86609, A 特開２０１５−７０６６１号公報JP, 2015-70661, A

しかしながら、総出力電力が可及的に少ない数の充電器によって生成されるように総電力指令値を分配マップに従って複数の充電器に分配すると、充電装置全体の応答性能は、動作する（出力電力を上昇させる）充電器の追随性能の合成分しか得られない。この結果、充電装置１からの総出力電力が目標総電力に到達するまでに時間がかかる。   However, when the total power command value is distributed to a plurality of chargers according to the distribution map so that the total output power is generated by the fewest possible number of chargers, the response performance of the entire charging device operates (output power Can only get a composite of the charger's tracking performance. As a result, it takes time for the total output power from the charging device 1 to reach the target total power.

本発明の一側面に係る目的は、フリッカ制御を行いつつ目標総電力に対する応答性能が向上した充電装置を提供することである。   An object according to one aspect of the present invention is to provide a charging device having improved response performance to target total power while performing flicker control.

本発明に係る一つの形態である充電装置は、２つの充電器と、フリッカ制御部と、分配部と、再分配部とを備える。２つの充電器は、並列接続し、入力した電力指令値に従った出力電力を出力する。フリッカ制御部は、２つの充電器からの総出力電力を制御する総電力指令値を最大指令幅毎に階段状に目標総電力値まで上昇させて出力する。分配部は、分配マップに従って、目標総電力値を２つの充電器に分配した各充電器の目標電力値を出力する。分配マップにおいて、総出力電力値が２つの充電器の内の第１の充電器の最大可能出力値以下である場合には、総出力電力値が第１の充電器に割り当てられる。また、分配マップにおいて、総出力電力値が第１の充電器の最大可能出力値を超える場合には、最大可能出力値が第１の充電器に割り当てられ、総出力電力値から最大可能出力値を減算した残余電力値が２つの充電器の内の第２の充電器に割り当てられる。再分配部は、２つの充電器の目標電力値がゼロよりも大きく、分配マップに従って総電力指令値を２つの充電器に分配すると２つの充電器の内の１つの充電器へ出力する電力指令値がゼロになる場合、総電力指令値を２つの充電器に分配した各充電器の電力指令値として、ゼロよりも大きい電力指令値を２つの充電器へ出力する。   A charging device according to one aspect of the present invention includes two chargers, a flicker control unit, a distribution unit, and a redistribution unit. The two chargers are connected in parallel and output the output power according to the input power command value. The flicker control unit increases the total power command value for controlling the total output power from the two chargers to the target total power value in a step-like manner for each maximum command width and outputs it. The distribution unit outputs a target power value of each charger that distributes the target total power value to the two chargers according to the distribution map. In the distribution map, if the total output power value is less than or equal to the maximum possible output value of the first of the two chargers, the total output power value is assigned to the first charger. Also, in the distribution map, if the total output power value exceeds the maximum possible output value of the first charger, the maximum possible output value is assigned to the first charger, and from the total output power value to the maximum possible output value The residual power value obtained by subtracting is assigned to the second charger of the two chargers. When the target power value of the two chargers is greater than zero, and the redistribution unit distributes the total power command value to the two chargers according to the distribution map, the power command to be output to one of the two chargers If the value becomes zero, the power command value larger than zero is output to the two chargers as the power command value of each charger that distributes the total power command value to the two chargers.

本発明に係る一つの形態である充電装置は、フリッカ抑制のために階段状に上昇する総電力指令値が目標総電力値に到達するまでの過程において、目標電力値がゼロではない各充電器から電力を出力することで、総出力電力が目標電力に到達するまでの時間を短縮する。それ故、本発明に係る一つの形態である充電装置によれば、フリッカ制御を行いつつ、目標総電力に対する応答性能を向上することができる。   In the charging device according to one aspect of the present invention, each charger whose target power value is not zero in the process until the total power command value rising in a stepwise manner reaches the target total power value for flicker suppression By outputting power from, the time required for the total output power to reach the target power is reduced. So, according to the charging device which is one form concerning the present invention, the response performance to target total electric power can be improved, performing flicker control.

実施形態に従った充電装置によれば、フリッカ制御を行いつつ目標総電力に対する応答性能を向上することができる。   According to the charging device according to the embodiment, it is possible to improve the response performance to the target total power while performing flicker control.

実施形態に従った充電装置の構成例を示す図である。It is a figure which shows the structural example of the charging device according to embodiment. 実施形態に従った総電力指令制御の一例の説明図である。It is explanatory drawing of an example of total electric power command control according to embodiment. 実施形態に従った分配マップの一例を示す図である。FIG. 7 shows an example of a distribution map according to an embodiment.

以下図面に基づいて実施形態について詳細を説明する。
図１は、実施形態に従った充電装置の構成例を示す図である。図１に示す構成例では、充電装置１は、例えば、電気自動車、プラグインハイブリッド車、又は電動フォークリフト等の車両に、二次電池２及び車両制御部３と共に搭載される。 Hereinafter, embodiments will be described in detail based on the drawings.
FIG. 1 is a diagram showing a configuration example of a charging device according to the embodiment. In the configuration example shown in FIG. 1, the charging device 1 is mounted on a vehicle such as an electric vehicle, a plug-in hybrid vehicle, or an electric forklift together with the secondary battery 2 and the vehicle control unit 3.

図１に示すように、充電装置１は、複数の充電器１１、フリッカ制御部１２、分配部１３、及び再分配部１４を備える。なお、図１には２つの充電器１１が示されているが、充電装置１は３つ以上の充電器１１を備えてもよい。   As shown in FIG. 1, the charging device 1 includes a plurality of chargers 11, a flicker control unit 12, a distribution unit 13, and a redistribution unit 14. Although two chargers 11 are shown in FIG. 1, the charging device 1 may include three or more chargers 11.

複数の充電器１１は、並列接続し、入力した電力指令値に従った出力電力を出力する。具体的には、各充電器１１は、入力した交流電力を直流電力に変換して出力し得る最大可能出力値を有し、各充電器１１には、当該充電器１１の最大可能出力値以下の電力指令値が入力する。なお、各充電器１１の最大可能出力値は異なってもよいが、以下では、各充電器１１の最大可能出力値が同じであるものとして説明する。各充電器１１は、入力した電力指令値に対する所定の追随性能を有し、入力した電力指令値に対応する出力電力を追随性能に従って出力する。     The plurality of chargers 11 are connected in parallel, and output the output power according to the input power command value. Specifically, each charger 11 has the maximum possible output value capable of converting the input AC power into DC power and outputting it, and each charger 11 has the maximum possible output value or less of the charger 11 The power command value of is input. In addition, although the maximum possible output value of each charger 11 may differ, below, it demonstrates as that with which the maximum possible output value of each charger 11 is the same. Each charger 11 has a predetermined tracking performance with respect to the input power command value, and outputs output power corresponding to the input power command value according to the tracking performance.

図１に示すように、各充電器１１は、充電器制御部１１１及びＡＣ／ＤＣ（Alternating Current/Direct Current）コンバータ１１２を備える。充電器制御部１１１は、例えば、ＣＰＵ（Central Processing Unit）、マルチコアＣＰＵ、又はプログラマブルなデバイス（ＦＰＧＡ（Field Programmable Gate Array）やＰＬＤ（Programmable Logic Device）等）により構成される。充電器制御部１１１は、入力した電力指令値に従ってＡＣ／ＤＣコンバータ１１２の動作を制御する。ＡＣ／ＤＣコンバータ１１２は、充電器制御部１１１の制御に従って、電力系統４から入力した交流電力を、電力指令値に対応した直流電力に変換して出力する。こうして、並列接続した充電器１１から二次電池２へ直流電力が出力される。     As shown in FIG. 1, each charger 11 includes a charger control unit 111 and an AC / DC (Alternating Current / Direct Current) converter 112. The charger control unit 111 is configured by, for example, a central processing unit (CPU), a multi-core CPU, or a programmable device (such as a field programmable gate array (FPGA) or a programmable logic device (PLD)). Charger control unit 111 controls the operation of AC / DC converter 112 in accordance with the input power command value. AC / DC converter 112 converts the AC power input from power system 4 into DC power corresponding to the power command value and outputs the AC power according to the control of charger control unit 111. Thus, DC power is output from the charger 11 connected in parallel to the secondary battery 2.

フリッカ制御部１２、分配部１３、及び再分配部１４は、例えば、ＣＰＵ、マルチコアＣＰＵ、又はプログラマブルなデバイス（ＦＰＧＡやＰＬＤ等）により構成される。
充電装置１が二次電池２を充電する場合、フリッカ制御部１２には、並列接続した複数の充電器１１が二次電池２へ出力する目標総電力値に対応する車両電力指令値が車両制御部３から入力する。目標総電力値とは、並列接続した充電器１１、すなわち充電装置１がフリッカ制御に従って二次電池２へ最終的に出力する電力値を指す。車両制御部３は、車両の走行等を制御する装置であり、例えば、ＣＰＵ、マルチコアＣＰＵ、又はプログラマブルなデバイス（ＦＰＧＡやＰＬＤ等）により構成される。図２に示すように、フリッカ制御部１２は、複数の充電器１１からの総出力電力を制御する総電力指令値を最大指令幅毎に階段状に目標総電力値まで上昇あるいは下降させて出力する。 The flicker control unit 12, the distribution unit 13, and the redistribution unit 14 are configured by, for example, a CPU, a multi-core CPU, or a programmable device (such as an FPGA or a PLD).
When the charging device 1 charges the secondary battery 2, the flicker control unit 12 controls the vehicle power command value corresponding to the target total power value output to the secondary battery 2 by the plurality of chargers 11 connected in parallel. Input from part 3. The target total power value refers to a power value that the charger 11 connected in parallel, that is, the charging device 1 finally outputs to the secondary battery 2 according to flicker control. The vehicle control unit 3 is a device that controls traveling of a vehicle and the like, and is configured of, for example, a CPU, a multi-core CPU, or a programmable device (such as an FPGA or a PLD). As shown in FIG. 2, the flicker control unit 12 increases or decreases the total power command value for controlling the total output power from the plurality of chargers 11 to the target total power value in a stepwise manner for each maximum command width and outputs Do.

図２は、実施形態に従った総電力指令制御の一例の説明図である。図２に示すように、系統電力のフリッカを抑制するために、総電力指令値を階段状に変化させる最大指令幅ΔＷが設定される。フリッカ制御部１２は、出力する総電力指令値を最大指令幅ΔＷ毎に上昇させ、上昇させた総電力指令値を一定時間維持する。総電力指令値が維持される時間は、最大指令幅ΔＷに追随して出力電力を上昇させる充電器１１の追随性能に従い得る。フリッカ制御部１２は、こうした制御を繰り返すことで、車両電力指令値が示す目標総電力値まで総電力指令値を階段状に生成して出力する。なお、図２は目標総電力値に向って上昇させる図を示したが、下降させる場合も同様に最大指令幅ΔＷ毎に下降させ、一定時間維持する制御を繰り返す。   FIG. 2 is an explanatory diagram of an example of total power command control according to the embodiment. As shown in FIG. 2, in order to suppress flicker of the grid power, a maximum command width ΔW that changes the total power command value stepwise is set. The flicker control unit 12 increases the total power command value to be output for each maximum command width ΔW, and maintains the increased total power command value for a certain period of time. The time for which the total power command value is maintained may be in accordance with the tracking performance of the charger 11 that raises the output power following the maximum command width ΔW. By repeating such control, the flicker control unit 12 generates and outputs a total power command value in steps until the target total power value indicated by the vehicle power command value. Although FIG. 2 shows a diagram for raising toward the target total power value, similarly, when decreasing, the control is also performed to decrease for each maximum command width ΔW and maintain the constant time.

また、充電装置１が二次電池２を充電する場合、分配部１３には、目標総電力値を表す車両電力指令値が車両制御部３から入力する。分配部１３は、目標総電力値を複数の充電器１１に分配した各充電器１１の目標電力値を、図３に示すような所定の分配マップに従って計算して出力する。各充電器１１の目標電力値とは、充電装置１が目標総電力を二次電池２へ出力した場合に、並列接続した各充電器１１が出力する電力値を指す。   When the charging device 1 charges the secondary battery 2, the distribution unit 13 receives a vehicle power command value representing the target total power value from the vehicle control unit 3. The distribution unit 13 calculates and outputs the target power value of each charger 11 obtained by distributing the target total power value to the plurality of chargers 11 according to a predetermined distribution map as shown in FIG. 3. The target power value of each charger 11 indicates the power value output from each charger 11 connected in parallel when the charging device 1 outputs the target total power to the secondary battery 2.

図３は、実施形態に従った分配マップの一例を示す図であり、充電装置１が２つの充電器１１を備える場合の分配マップの一例である。図３に示す分配マップでは、総出力電力値が２つの充電器１１の内の第１の充電器１１の最大可能出力値Ａ[Ｗ]以下である場合には、総出力電力値の全てが第１の充電器１１に割り当てられる。また、総出力電力値が第１の充電器１１の最大可能出力値Ａ[Ｗ]を超える場合には、最大可能出力値Ａ[Ｗ]が第１の充電器１１に割り当てられ、総出力電力値から最大可能出力値Ａ[Ｗ]を減算した残余電力値が２つの充電器１１の内の第２の充電器１１に割り当てられる。このように、充電装置１が備える複数の充電器１１の内、第１の充電器１１には、分配マップに従って電力指令値が優先して割り当てられる。また、複数の充電器１１の内、第２の充電器１１には、分配マップに従って第１の充電器１１に劣後して電力指令値が割り当てられる。   FIG. 3 is a diagram showing an example of the distribution map according to the embodiment, and is an example of the distribution map in the case where the charging device 1 includes the two chargers 11. In the distribution map shown in FIG. 3, when the total output power value is equal to or less than the maximum possible output value A [W] of the first charger 11 of the two chargers 11, all of the total output power values are It is assigned to the first charger 11. Also, when the total output power value exceeds the maximum possible output value A [W] of the first charger 11, the maximum possible output value A [W] is assigned to the first charger 11, and the total output power The residual power value obtained by subtracting the maximum possible output value A [W] from the value is assigned to the second charger 11 of the two chargers 11. As described above, among the plurality of chargers 11 included in the charging device 1, the power command value is preferentially allocated to the first charger 11 according to the distribution map. Further, among the plurality of chargers 11, a power command value is assigned to the second charger 11 subordinate to the first charger 11 according to the distribution map.

なお、充電装置１が任意の複数の充電器１１を備える場合、分配マップは以下のように設定されてもよい。すなわち、総出力電力値が複数の充電器１１の内の１つ以上の第１の充電器１１の最大可能出力値の合計値以下である場合には、総出力電力値を該１つ以上の第１の充電器１１の数で除算した値が該１つ以上の第１の充電器１１に割り当てられる。また、総出力電力値が１つ以上の第１の充電器１１の最大可能出力値の合計値を超える場合には、最大可能出力値が該１つ以上の第１の充電器１１に割り当てられ、総出力電力値から最大可能出力値の合計値を減算した残余電力値が複数の充電器１１の内の残余の１つの第２の充電器１１に割り当てられる。   In addition, when the charging device 1 is equipped with several arbitrary chargers 11, a distribution map may be set as follows. That is, when the total output power value is equal to or less than the sum of the maximum possible output values of one or more of the plurality of first chargers 11 among the plurality of chargers 11, the total output power value is one or more A value divided by the number of first chargers 11 is assigned to the one or more first chargers 11. Also, if the total output power value exceeds the sum of the maximum possible output values of one or more first chargers 11, the maximum possible output value is assigned to the one or more first chargers 11 A residual power value obtained by subtracting the sum of the maximum possible output values from the total output power value is allocated to one remaining second charger 11 among the plurality of chargers 11.

前述したように、各充電器１１は、入力した電力指令値に対する所定の追随性能を有し、入力した電力指令値に対応する出力電力を追随性能に従って出力する。そこで、図２に示すような総電力指令制御において、充電装置１からの総出力電力が最大指令幅ΔＷ分上昇するために要する時間は、入力した電力指令値に従って出力電力を上昇させる充電器１１の数が多い程短くなる。したがって、入力した電力指令値に従って出力電力を上昇させる充電器１１の数が多い程、総出力電力が目標総電力に到達するまでにかかる時間は短くなり、目標総電力に対する充電装置１全体の応答性能は向上する。   As described above, each charger 11 has predetermined tracking performance with respect to the input power command value, and outputs output power corresponding to the input power command value according to the tracking performance. Therefore, in the total power command control as shown in FIG. 2, the time required for the total output power from charging device 1 to increase by the maximum command width ΔW is the charger 11 that raises the output power according to the input power command value. The shorter the number, the shorter it becomes. Therefore, as the number of chargers 11 for raising the output power according to the input power command value increases, the time taken for the total output power to reach the target total power becomes shorter, and the overall response of the charging device 1 to the target total power Performance is improved.

しかしながら、フリッカ制御部１２が出力する総電力指令値が目標総電力値に到達するまでの過程で、図３に示すような分配マップに従って総電力指令値を複数の充電器１１に分配すると、目標電力値がゼロではない充電器１１へ出力する電力指令値がゼロになる場合がある。例えば、分配マップに従って総電力指令値を充電装置１が備える２つの充電器に分配すると、２つの充電器の内の１つの充電器へ出力する電力指令値がゼロになる場合がある。こうした場合、目標総電力に対する充電装置１全体の応答性能は、各充電器１１が所定の追随性能を有するにもかかわらず、動作する（出力電力を上昇させる）充電器１１の追随性能の合成分しか得られない。   However, if the total power command value is distributed to the plurality of chargers 11 according to the distribution map as shown in FIG. 3 in the process until the total power command value output by flicker control unit 12 reaches the target total power value, the target The electric power command value output to the charger 11 whose electric power value is not zero may become zero. For example, when the total power command value is distributed to two chargers provided in the charging device 1 according to the distribution map, the power command value output to one of the two chargers may be zero. In such a case, the response performance of the entire charging apparatus 1 with respect to the target total power is a combination of the tracking performance of the charger 11 that operates (increases the output power) even though each charger 11 has a predetermined tracking performance. You can only get

より具体的には、例えば、図３に示すように、各充電器１１の最大可能出力値がＡ[Ｗ]であり、車両電力指令値に対応する目標総電力値がＢ[Ｗ]であると仮定する。この仮定において、フリッカ制御部１２が出力する総電力指令値が目標総電力値Ｂ[Ｗ]に到達した場合、充電装置１が備える２つの充電器１１の内、第１の充電器１１に対する電力指令値は、該第１の充電器１１の最大可能出力値Ａ[Ｗ]である。また、第２の充電器１１に対する電力指令値は、Ｂ［Ｗ］からＡ[Ｗ]を減算したＣ［Ｗ］である。このように、総電力指令値が目標総電力値Ｂ［Ｗ］に到達した場合には各充電器１１の出力電力はゼロよりも大きくなるため、各充電器１１の目標電力値はゼロよりも大きい。しかしながら、総電力指令値が目標総電力値Ｂ[Ｗ]に達する以前のＡ[Ｗ]以下において（Ａ［Ｗ］に到達する過程において）分配マップに従うと、総電力指令値は第１の充電器１１のみに割り当てられ、第２の充電器１１には割り当てられない。すなわち、第１の充電器１１の電力指令値は総電力指令値の上昇と共に上昇し、第２の充電器１１の電力指令値はゼロである。このため、充電装置１の総出力電力は、総電力指令値がＡ[Ｗ]を超えるまでは、第１の充電器１１の追随性能にのみ依存して上昇する。また、総電力指令値がＡ[Ｗ]を超えて目標総電力値Ｂ[Ｗ]に到達するまでにおいて分配マップに従うと、第１の充電器１１の電力指令値は第１の充電器１１の最大可能出力値Ａ[Ｗ]に維持され、第２の充電器１１の電力指令値はＣ[Ｗ]まで上昇する。このため、充電装置１の総出力電力は、総電力指令値がＡ[Ｗ]を超えて目標総電力値Ｂ[Ｗ]に到達するまでは、第２の充電器１１の追随性能にのみ依存して上昇する。このように、目標総電力に対する充電装置１全体の応答性能は、各充電器１１が所定の追随性能を有するにもかかわらず、動作する（出力電力を上昇させる）充電器１１の追随性能の合成分（この場合１台分のみの追従性能）しか得られない。   More specifically, for example, as shown in FIG. 3, the maximum possible output value of each charger 11 is A [W], and the target total power value corresponding to the vehicle power command value is B [W]. Suppose. Under this assumption, when the total power command value output from the flicker control unit 12 reaches the target total power value B [W], the power to the first charger 11 of the two chargers 11 included in the charging device 1 The command value is the maximum possible output value A [W] of the first charger 11. The power command value for the second charger 11 is C [W] obtained by subtracting A [W] from B [W]. As described above, when the total power command value reaches the target total power value B [W], the output power of each charger 11 becomes larger than zero, so the target power value of each charger 11 is smaller than zero. large. However, according to the distribution map (in the process of reaching A [W]) below A [W] before the total power command value reaches the target total power value B [W], the total power command value is the first charge. And the second charger 11 is not allocated. That is, the power command value of the first charger 11 rises with the increase of the total power command value, and the power command value of the second charger 11 is zero. For this reason, the total output power of the charging device 1 rises only depending on the tracking performance of the first charger 11 until the total power command value exceeds A [W]. Also, according to the distribution map until the total power command value reaches A [W] and reaches the target total power value B [W], the power command value of the first charger 11 is of the first charger 11 The power command value of the second charger 11 is increased to C [W] while being maintained at the maximum possible output value A [W]. For this reason, the total output power of the charging device 1 depends only on the tracking performance of the second charger 11 until the total power command value exceeds A [W] and reaches the target total power value B [W]. To rise. Thus, the response performance of the entire charging apparatus 1 with respect to the target total power is a combination of the tracking performance of the charger 11 that operates (increases the output power) even though each charger 11 has a predetermined tracking performance. Only a minute (in this case, the follow-up performance of only one car) can be obtained.

そこで、フリッカ制御部１２が出力する総電力指令値が目標総電力値に到達するまでの過程において、再分配部１４は、充電装置１が備える各充電器１１に総電力指令値を以下の説明のように分配し、各充電器１１の電力指令値を出力する。   Therefore, in the process until the total power command value output from the flicker control unit 12 reaches the target total power value, the redistribution unit 14 explains the total power command value for each charger 11 provided in the charging device 1 as follows. , And outputs the power command value of each charger 11.

再分配部１４には、フリッカ制御部１２が出力した総電力指令値と、分配部１３が出力した各充電器１１の目標電力値とが入力する。入力した２つ以上の充電器１１の目標電力値がゼロよりも大きい場合、再分配部１４は、入力した総電力指令値を分配マップに従って複数の充電器１１に分配すると複数の充電器１１の内の１つの充電器１１以外の充電器１１へ出力する電力指令値がゼロになるか否かを判定する。例えば、再分配部１４は、分配マップに従って総電力指令値を２つの充電器１１に分配すると２つの充電器１１の内の１つの充電器へ出力する電力指令値がゼロになるか否かを判定する。   The total power command value output from the flicker control unit 12 and the target power value of each charger 11 output from the distribution unit 13 are input to the redistribution unit 14. If the input target power values of the two or more chargers 11 are greater than zero, the redistribution unit 14 distributes the input total power command values to the plurality of chargers 11 according to the distribution map. It is determined whether the electric power command value output to the chargers 11 other than one of the chargers 11 becomes zero. For example, when the redistribution unit 14 distributes the total power command value to the two chargers 11 according to the distribution map, whether the power command value output to one of the two chargers 11 becomes zero or not judge.

分配マップに従うと１つの充電器１１以外の充電器１１へ出力する電力指令値がゼロになる場合、再分配部１４は、総電力指令値を複数の充電器１１に分配した各充電器１１の電力指令値として、ゼロよりも大きい電力指令値を、目標電力値がゼロよりも大きい２つ以上の充電器１１へ出力する。例えば、分配マップに従うと２つの充電器１１の内の１つの充電器１１へ出力する電力指令値がゼロになる場合、再分配部１４は、総電力指令値を２つの充電器１１に分配した各充電器１１の電力指令値として、ゼロよりも大きい電力指令値を２つの充電器１１へ出力する。   When the power command value output to the chargers 11 other than one charger 11 becomes zero according to the distribution map, the redistribution unit 14 distributes the total power command value to the plurality of chargers 11 A power command value larger than zero is output as a power command value to two or more chargers 11 whose target power value is larger than zero. For example, when the power command value output to one of the two chargers 11 becomes zero according to the distribution map, the redistribution unit 14 distributes the total power command value to the two chargers 11. As a power command value of each charger 11, a power command value larger than zero is output to the two chargers 11.

具体的には、再分配部１４は、充電装置１が備える各充電器１１の電力指令値を式(1)及び式(2)に従い計算して出力する。
１つ以上の第２の充電器１１の内の各第２の充電器１１の電力指令値＝ｍｉｎ（総電力指令値／目標電力値がゼロではない充電器１１の数，各第２の充電器１１の目標電力値） ・・・(1)
第１の充電器１１の電力指令値＝総電力指令値−１つ以上の第２の充電器１１の電力指令値の総和 ・・・(2) Specifically, the redistribution unit 14 calculates and outputs the power command value of each charger 11 included in the charging device 1 according to Equations (1) and (2).
Power command value of each second charger 11 of one or more second chargers 11 = min (total power command value / number of chargers 11 whose target power value is not zero, each second charge Target power value of unit 11) (1)
Power command value of first charger 11 = total power command value-sum of power command values of one or more second chargers 11 (2)

例えば、充電装置１が２つの充電器１１を備える場合、式(1)は式(3)のように表され、式(2)は式(4)のように表される。
第２の充電器１１の電力指令値＝ｍｉｎ（総電力指令値／２，第２の充電器１１の目標電力値） ・・・(3)
第１の充電器１１の電力指令値＝総電力指令値−第２の充電器の電力指令値 ・・・(4) For example, when the charging device 1 includes two chargers 11, formula (1) is represented as formula (3), and formula (2) is represented as formula (4).
Power command value of second charger 11 = min (total power command value / 2, target power value of second charger 11) (3)
Power command value of the first charger 11 = total power command value−power command value of the second charger (4)

式(3)及び式(4)の計算によって、再分配部１４は、総電力指令値を２で除算した値が第２の充電器１１の目標電力値を超えるまで、総電力指令値を２で除算した値を電力指令値として２つの充電器１１へ出力する。そして、総電力指令値を２で除算した値が第２の充電器１１の目標電力値を超えると、再分配部１４は、第２の充電器１１の目標電力値を第２の充電器１１へ電力指令値として出力する。また、再分配部１４は、第２の充電器１１の目標電力値を総電力指令値から減算した残余電力値を第１の充電器１１へ電力指令値として出力する。   By the calculation of the equations (3) and (4), the redistribution unit 14 divides the total power command value by 2 until the value obtained by dividing the total power command value by 2 exceeds the target power value of the second charger 11. The divided value is output to the two chargers 11 as a power command value. Then, when the value obtained by dividing the total power command value by 2 exceeds the target power value of the second charger 11, the redistribution unit 14 transmits the target power value of the second charger 11 to the second charger 11. Output as the power command value. Further, the redistribution unit 14 outputs a residual power value obtained by subtracting the target power value of the second charger 11 from the total power command value to the first charger 11 as a power command value.

このように、充電装置１は、フリッカ抑制のために階段状に上昇する総電力指令値が目標総電力値に到達する過程において、目標電力値がゼロではない各充電器１１が電力を出力するようにすることで、総出力電力が目標電力に到達するまでの時間を短縮する。したがって、実施形態に従った充電装置によれば、フリッカ制御を行いつつ、目標総電力に対する応答性能を向上することができる。   As described above, in the charging device 1, in the process in which the stepwise rising total power command value reaches the target total power value to suppress flicker, each charger 11 whose target power value is not zero outputs power By doing so, the time for the total output power to reach the target power is reduced. Therefore, according to the charging device according to the embodiment, it is possible to improve the response performance to the target total power while performing flicker control.

本発明は、以上の実施の形態に限定されるものでなく、本発明の要旨を逸脱しない範囲内で種々の改良、変更が可能である。   The present invention is not limited to the above embodiments, and various improvements and modifications can be made without departing from the scope of the present invention.

１ 充電装置
２ 二次電池
３ 車両制御部
４ 電力系統
１１ 充電器
１２ フリッカ制御部
１３ 分配部
１４ 再分配部
１１１ 充電器制御部
１１２ ＡＣ／ＤＣコンバータ REFERENCE SIGNS LIST 1 charging device 2 secondary battery 3 vehicle control unit 4 power system 11 charger 12 flicker control unit 13 distribution unit 14 redistribution unit 111 charger control unit 112 AC / DC converter

Claims (4)

並列接続し、入力した電力指令値に従った出力電力を出力する２つの充電器と、
前記２つの充電器からの総出力電力を制御する総電力指令値を最大指令幅毎に階段状に目標総電力値まで上昇させて出力するフリッカ制御部と、
総出力電力値が前記２つの充電器の内の第１の充電器の最大可能出力値以下である場合には前記総出力電力値を前記第１の充電器に割り当て、前記総出力電力値が前記第１の充電器の最大可能出力値を超える場合には前記最大可能出力値を前記第１の充電器に割り当て、前記総出力電力値から前記最大可能出力値を減算した残余電力値を前記２つの充電器の内の第２の充電器に割り当てる分配マップに従って、前記目標総電力値を前記２つの充電器に分配した各充電器の目標電力値を出力する分配部と、
前記２つの充電器の前記目標電力値がゼロよりも大きく、前記分配マップに従って前記総電力指令値を前記２つの充電器に分配すると前記２つの充電器の内の１つの充電器へ出力する前記電力指令値がゼロになる場合、前記総電力指令値を前記２つの充電器に分配した前記各充電器の前記電力指令値として、ゼロよりも大きい前記電力指令値を前記２つの充電器へ出力する再分配部と
を備えることを特徴とする充電装置。 Two chargers connected in parallel and outputting output power according to the input power command value,
A flicker control unit configured to increase the total power command value for controlling the total output power from the two chargers to the target total power value in a step-like manner for each maximum command width;
If the total output power value is less than or equal to the maximum possible output value of the first charger of the two chargers, the total output power value is assigned to the first charger, and the total output power value is If the maximum possible output value of the first charger is exceeded, the maximum possible output value is assigned to the first charger, and a residual power value obtained by subtracting the maximum possible output value from the total output power value is used. A distribution unit for outputting a target power value of each charger obtained by distributing the target total power value to the two chargers according to a distribution map allocated to the second charger of the two chargers;
The target power values of the two chargers are greater than zero, and when the total power command value is distributed to the two chargers according to the distribution map, it is output to one of the two chargers. When the electric power command value becomes zero, the electric power command value larger than zero is output to the two chargers as the electric power command value of each charger that distributes the total electric power command value to the two chargers. And a redistribution unit. 請求項１に記載の充電装置であって、
前記２つの充電器の前記目標電力値がゼロよりも大きく、前記分配マップに従って前記総電力指令値を前記２つの充電器に分配すると前記１つの充電器へ出力する前記電力指令値がゼロになる場合、前記再分配部は、前記総電力指令値を２で除算した値を前記２つの充電器へ出力する
ことを特徴とする充電装置。 The charging device according to claim 1,
When the target power values of the two chargers are greater than zero, and the total power command value is distributed to the two chargers according to the distribution map, the power command values output to the one charger become zero. In this case, the redistribution unit may output a value obtained by dividing the total power command value by 2 to the two chargers. 請求項２に記載の充電装置であって、
前記総電力指令値を２で除算した値が前記第２の充電器の前記目標電力値を超える場合、前記再分配部は、前記第２の充電器の前記目標電力値を前記第２の充電器へ出力し、前記第２の充電器の前記目標電力値を前記総電力指令値から減算した残余電力値を前記第１の充電器へ出力する
ことを特徴とする充電装置。 The charging device according to claim 2,
When the value obtained by dividing the total power command value by 2 exceeds the target power value of the second charger, the redistribution unit performs the second charge on the target power value of the second charger. And a residual power value obtained by subtracting the target power value of the second charger from the total power command value to the first charger. 並列接続し、入力した電力指令値に従った出力電力を出力する複数の充電器と、
前記複数の充電器からの総出力電力を制御する総電力指令値を最大指令幅毎に階段状に目標総電力値まで上昇させて出力するフリッカ制御部と、
総出力電力値が前記複数の充電器の内の１つ以上の第１の充電器の最大可能出力値の合計値以下である場合には前記総出力電力値を前記１つ以上の第１の充電器の数で除算した値を前記１つ以上の第１の充電器に割り当て、前記総出力電力値が前記１つ以上の第１の充電器の前記最大可能出力値の合計値を超える場合には前記最大可能出力値を前記１つ以上の第１の充電器に割り当て、前記総出力電力値から前記最大可能出力値の合計値を減算した残余電力値を前記複数の充電器の内の残余の１つの第２の充電器に割り当てる分配マップに従って、前記目標総電力値を前記複数の充電器に分配した各充電器の目標電力値を出力する分配部と、
前記複数の充電器の内の２つ以上の充電器の前記目標電力値がゼロよりも大きく、前記分配マップに従って前記総電力指令値を前記複数の充電器に分配すると前記複数の充電器の内の１つの充電器以外の充電器へ出力する前記電力指令値がゼロになる場合、前記総電力指令値を前記複数の充電器に分配した前記各充電器の前記電力指令値として、ゼロよりも大きい前記電力指令値を前記２つ以上の充電器へ出力する再分配部と
を備えることを特徴とする充電装置。 A plurality of chargers connected in parallel and outputting output power according to the input power command value;
A flicker control unit configured to increase a total power command value for controlling total output power from the plurality of chargers to a target total power value in a step-like manner for each maximum command width;
When the total output power value is less than or equal to the sum of the maximum possible output values of one or more first chargers of the plurality of chargers, the total output power value is the one or more firsts. When the value divided by the number of chargers is assigned to the one or more first chargers and the total output power value exceeds the sum of the maximum possible output values of the one or more first chargers The maximum possible output value is assigned to the one or more first chargers, and a residual power value obtained by subtracting the sum of the maximum possible output values from the total output power value is one of the plurality of chargers. A distribution unit that outputs target power values of the respective chargers obtained by distributing the target total power value to the plurality of chargers according to a distribution map allocated to the remaining one second charger;
The target power value of two or more chargers among the plurality of chargers is greater than zero, and distributing the total power command value to the plurality of chargers according to the distribution map If the power command value output to a charger other than one of the chargers becomes zero, the total power command value is distributed to the plurality of chargers, and the power command value of each charger is less than zero. And a redistribution unit for outputting the large power command value to the two or more chargers.
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