JP6763491B1 - 電力変換システム - Google Patents
電力変換システム Download PDFInfo
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- JP6763491B1 JP6763491B1 JP2019572248A JP2019572248A JP6763491B1 JP 6763491 B1 JP6763491 B1 JP 6763491B1 JP 2019572248 A JP2019572248 A JP 2019572248A JP 2019572248 A JP2019572248 A JP 2019572248A JP 6763491 B1 JP6763491 B1 JP 6763491B1
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 142
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- 238000000034 method Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- BNOODXBBXFZASF-UHFFFAOYSA-N [Na].[S] Chemical compound [Na].[S] BNOODXBBXFZASF-UHFFFAOYSA-N 0.000 description 1
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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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/66—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal
- H02M7/68—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters
- H02M7/72—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/79—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal 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
- H02M7/797—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00306—Overdischarge protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
- H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/081—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters wherein the phase of the control voltage is adjustable with reference to the AC source
- H02M1/082—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters wherein the phase of the control voltage is adjustable with reference to the AC source with digital control
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/325—Means for protecting converters other than automatic disconnection with means for allowing continuous operation despite a fault, i.e. fault tolerant 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/043—Conversion of ac power input into dc power output without possibility of reversal by static converters using transformers or inductors only
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal 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
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal 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
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal 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 in a bridge configuration
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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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal 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
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters
- H02M7/539—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters with automatic control of output wave form or frequency
- H02M7/5395—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters with automatic control of output wave form or frequency by pulse-width modulation
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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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/66—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal
- H02M7/68—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters
- H02M7/72—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/79—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal 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
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0009—Devices or circuits for detecting current in a converter
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
直流側が蓄電池に接続され、交流側が連系インダクタンスを介して交流電源に接続された電力変換回路と、
前記連系インダクタンスの側から前記電力変換回路を介して前記蓄電池へと電力を取り込むように前記電力変換回路を制御する充電制御モードを備える電力変換制御回路と、
前記充電制御モードを実行させるための指令値を生成するように構築された指令値生成部と、
を備える。
前記電力変換制御回路が備える前記充電制御モードは、前記交流電源の電源電圧ベクトルと前記電源電圧ベクトルよりも遅れ位相を持ち且つ前記指令値に基づく大きさおよび位相を持つ電圧指令値ベクトルとで決まる連系インダクタンス電圧が前記連系インダクタンスに印加されるように前記電力変換回路の出力電圧を制御するモードであり、
前記指令値生成部は、前記蓄電池の電圧が予め定められた過放電閾値を下回っていない場合における前記充電制御モードの運転のために第一指令値を生成し、前記蓄電池の電圧が前記過放電閾値を下回った場合における前記充電制御モードの運転のために第二指令値を生成し、
前記第一指令値は、第一大きさおよび第一遅れ位相を持つ第一電圧指令値ベクトルに応じた出力電圧を前記電力変換回路に出力させるための指令値であり、
前記第二指令値は、前記第一大きさよりも小さい第二大きさを持つ第二電圧指令値ベクトルに応じた出力電圧を前記電力変換回路に出力させるための指令値である。
なお、連系インダクタンスは、リアクトルまたはトランスを含む。
図1は、実施の形態にかかる電力変換システム1を示す模式的な構成図である。電力変換システム1は、交流電源100に接続している。実施の形態における交流電源100は、三相交流を出力する電力系統である。
図6および図7は、実施の形態にかかる電力変換システム1の動作を説明するための簡易的なモデル図である。図6に模式的に示すように、実施の形態における電力変換システム1は、電力変換回路3aが蓄電池2から三相交流電力を生成するものである。蓄電池2と電力変換回路3aとを三相交流電圧源101で模擬すると、図6のシステムは図7のように模擬することができる。
図18は、実施の形態にかかる電力変換システム1で実行される制御ルーチンの一例を示すフローチャートである。図18のルーチンは、通常時充電制御モードと過放電時の充電制御モードとを選択的に使用するルーチンの一例である。図18のルーチンは、指令値生成部10と電力変換制御回路4との協働により実施される。図18のルーチンは、予め定められた所定周期で繰り返し実行されている。
2 蓄電池
3 電力変換装置
3a 電力変換回路
4 電力変換制御回路
4a 電力計算部
4b 有効電力減算部
4c 無効電力減算部
4d1 有効電力制御部
4d2 無効電力制御部
4e インバータ電圧指令演算部
4f ゲートパルス生成部
5 変流器
6 リアクトル(連系インダクタンス)
7 計器用変成器
10 指令値生成部(MSC)
100 交流電源
101 三相交流電圧源
210 指令値生成ブロック
Ax1 第一基準交点
Ax2 第二基準交点
Ax3 第三基準交点
Ir リアクトル電流(連系インダクタンス電流)
P 有効電力計測値
P* 有効電力指令値
PbatC 有効電力成分ベクトル
PQ* 指令値
Q 無効電力計測値
Q* 無効電力指令値
QbatC 無効電力成分ベクトル
Qlmt 無効電力上限値
VS 電源電圧ベクトル
V* 電圧指令値ベクトル
V* 1 第一電圧指令値ベクトル
V* 2 第二電圧指令値ベクトル
Va インバータ電圧
Vb 過変調インバータ電圧
Vdc 蓄電池の電圧
VHlmt 上限電圧設定値
VLlmt 下限電圧設定値
Vovth 過放電閾値
Vr リアクトル電圧(連系インダクタンス電圧)
Vr1 第一リアクトル電圧ベクトル(第一連系インダクタンス電圧ベクトル)
Ir1 第一リアクトル電流ベクトル(第一連系インダクタンス電流ベクトル)
Vr2 第二リアクトル電圧ベクトル(第二連系インダクタンス電圧ベクトル)
θ1 第一遅れ位相
θ2 第二遅れ位相
S1 第一仮想円
S2 第二仮想円
RVref2 所定領域
SQ 仮想四角形
Larcref 仮想円弧部
Claims (11)
- 直流側が蓄電池に接続され、交流側が連系インダクタンスを介して交流電源に接続された電力変換回路と、
前記連系インダクタンスの側から前記電力変換回路を介して前記蓄電池へと電力を取り込むように前記電力変換回路を制御する充電制御モードを備える電力変換制御回路と、
前記充電制御モードを実行させるための指令値を生成するように構築された指令値生成部と、
を備え、
前記電力変換制御回路が備える前記充電制御モードは、前記交流電源の電源電圧ベクトルと前記電源電圧ベクトルよりも遅れ位相を持ち且つ前記指令値に基づく大きさおよび位相を持つ電圧指令値ベクトルとで決まる連系インダクタンス電圧が前記連系インダクタンスに印加されるように前記電力変換回路の出力電圧を制御するモードであり、
前記指令値生成部は、前記蓄電池の電圧が予め定められた過放電閾値を下回っていない場合における前記充電制御モードの運転のために第一指令値を生成し、前記蓄電池の電圧が前記過放電閾値を下回った場合における前記充電制御モードの運転のために第二指令値を生成し、
前記第一指令値は、第一大きさおよび第一遅れ位相を持つ第一電圧指令値ベクトルに応じた出力電圧を前記電力変換回路に出力させるための指令値であり、
前記第二指令値は、前記第一大きさよりも小さい第二大きさを持つ第二電圧指令値ベクトルに応じた出力電圧を前記電力変換回路に出力させるための指令値である電力変換システム。 - 前記電源電圧ベクトルと前記第一電圧指令値ベクトルとを合成したときの前記連系インダクタンス電圧を表すベクトルを、第一連系インダクタンス電圧ベクトルとし、
前記第一連系インダクタンス電圧ベクトルの始点を中心に前記第一連系インダクタンス電圧ベクトルの終点を回転させたときの前記第一連系インダクタンス電圧ベクトルの前記終点の軌跡からなる仮想円を、第一仮想円とし、
前記指令値生成部は、前記第二電圧指令値ベクトルの終点が前記第一仮想円の円周と重なるように前記第二指令値を生成する請求項1に記載の電力変換システム。 - 前記電源電圧ベクトルの始点を中心に前記電源電圧ベクトルの終点を回転させたときの前記電源電圧ベクトルの前記終点の軌跡からなる仮想円を、第二仮想円とし、
前記第一仮想円と前記第二仮想円との複数の交点のうち前記第一電圧指令値ベクトルの終点に近いほうの交点を、第一基準交点とし、
前記第一仮想円と前記電源電圧ベクトルとの交点を、第二基準交点とし、
前記第一仮想円の円周のうち前記第一基準交点と前記第二基準交点との間を伸び前記第一基準交点を含みかつ前記第二基準交点を含まない部分を、仮想円弧部とし、
前記指令値生成部は、前記第二電圧指令値ベクトルの終点が前記仮想円弧部と重なるように前記第二指令値を生成する請求項2に記載の電力変換システム。 - 前記電源電圧ベクトルと前記第一電圧指令値ベクトルとを合成したときの前記連系インダクタンス電圧を表すベクトルを、第一連系インダクタンス電圧ベクトルとし、
前記第一連系インダクタンス電圧ベクトルの始点を中心に前記第一連系インダクタンス電圧ベクトルの終点を回転させたときの前記第一連系インダクタンス電圧ベクトルの前記終点の軌跡からなる仮想円を、第一仮想円とし、
前記指令値生成部は、前記第二電圧指令値ベクトルの終点が前記第一仮想円の内側に位置するように前記第二指令値を生成する請求項1に記載の電力変換システム。 - 前記電源電圧ベクトルの始点を中心に前記電源電圧ベクトルの終点を回転させたときの前記電源電圧ベクトルの前記終点の軌跡からなる仮想円を、第二仮想円とし、
前記第一仮想円と前記第二仮想円と前記電源電圧ベクトルとで囲まれ且つ前記電源電圧ベクトルを含まない領域を、予め定めた所定領域とし、
前記指令値生成部は、前記第二電圧指令値ベクトルの終点が前記所定領域の内側に位置するように前記第二指令値を生成する請求項4に記載の電力変換システム。 - 前記指令値生成部は、前記電力変換回路と前記交流電源との連系点に前記電力変換回路が出力する無効電力が無効電力上限値を超えないように前記第二指令値を生成する請求項1から5のいずれか1項に記載の電力変換システム。
- 前記指令値生成部は、前記第一遅れ位相よりも前記電源電圧ベクトルから遅れた位相である第二遅れ位相を持つように前記第二電圧指令値ベクトルを生成する請求項1に記載の電力変換システム。
- 前記指令値生成部は、前記第一遅れ位相よりも前記電源電圧ベクトルから進んだ位相である第二遅れ位相を持つように前記第二電圧指令値ベクトルを生成する請求項1に記載の電力変換システム。
- 前記指令値生成部は、前記第二電圧指令値ベクトルが前記第一遅れ位相と同じ位相を持つように前記第二指令値を生成する請求項1に記載の電力変換システム。
- 前記指令値生成部は、前記電源電圧ベクトルを第一長辺とし前記第一電圧指令値ベクトルを対角線とする仮想四角形において、前記第二電圧指令値ベクトルの終点が前記第一長辺と平行な第二長辺に重なるように前記第二指令値を生成する請求項1に記載の電力変換システム。
- 前記指令値生成部は、前記電源電圧ベクトルと前記第一電圧指令値ベクトルとを合成した第一連系インダクタンス電圧ベクトルを第一短辺とし前記第一電圧指令値ベクトルを対角線とする仮想四角形において、前記第二電圧指令値ベクトルの終点が前記第一短辺と重なるように前記第二指令値を生成する請求項1に記載の電力変換システム。
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