JPS59216475A - Controlling method of power converter - Google Patents

Controlling method of power converter

Info

Publication number
JPS59216475A
JPS59216475A JP8891083A JP8891083A JPS59216475A JP S59216475 A JPS59216475 A JP S59216475A JP 8891083 A JP8891083 A JP 8891083A JP 8891083 A JP8891083 A JP 8891083A JP S59216475 A JPS59216475 A JP S59216475A
Authority
JP
Japan
Prior art keywords
control
angle
control circuit
constant
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8891083A
Other languages
Japanese (ja)
Inventor
Shunichi Hirose
広瀬　俊一
Kazuaki Kimura
一秋 木村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP8891083A priority Critical patent/JPS59216475A/en
Publication of JPS59216475A publication Critical patent/JPS59216475A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H02M7/145—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 thyratron or thyristor type requiring extinguishing means
    • H02M7/155—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 thyratron or thyristor type requiring extinguishing means using semiconductor devices only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)

Abstract

PURPOSE:To reduce a disorder at the starting or at the control switching time of a power converter by setting the output value, the primary delay item of a control circuit at the timing of this time as an initial value at the next timing when the abrupt variation of a control angle is required. CONSTITUTION:A control circuit executes a control arithmetic program at every sampling pulse of the prescribed timing, inputs a DC current set value and a DC current, executes a constant current control calculation 80, a constant voltage control calculation 81 and a constant margin angle control calculation 82, selects the minimum of the resultant control angle in the minimum value selector 90, and outputs a control angle (alpha). When the abrupt variation of the control angle is required, the output value and the primary delay item of the control circuit of this timing are set as initial values at the next timing.

Description

【発明の詳細な説明】 〔発明の技術分野〕 この発明は直流送電や周波数変換等に用いる電力変換装
置の制御方法にかかり、特にこの電力変換装置の起動時
や定電流制御を定電圧制御へ切替える等の制御の切替え
をおこ寿う際におこる動揺を押えることのできる制御方
法に関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a method for controlling a power converter used for DC power transmission, frequency conversion, etc., and particularly when starting up the power converter and changing constant current control to constant voltage control. The present invention relates to a control method capable of suppressing oscillations that occur when switching control such as switching.

〔発明の技術的背景〕[Technical background of the invention]

第１図は電力変換装置の一列としての直流２端子送電系
統図である。直流系統１０からの変流電力が変圧器２０
を介して変換器３ｏに供給され、直流電力に変換された
のち直流リアクトル４０を介して直流線路（資）、５１
に供給される。一方面流線路５０．５１を流れる直流重
力は直流リアクトル４１を介して変換器３１に入力され
、逆変換されて変流電力となり変圧器２１を介して交流
系統１１に供給される。このように変換器３０は順変換
をおこない変換器３１は逆変換をおこなう場合を考え、
以後変換器３ｏは順変換器とよび変換器３１は逆変換器
とよぶことにする。FIG. 1 is a DC two-terminal power transmission system diagram as a row of power converters. Transformed power from the DC system 10 is transferred to the transformer 20
is supplied to the converter 3o via the converter 3o, and after being converted into DC power, it is passed through the DC reactor 40 to the DC line (equipment), 51
supplied to The DC gravity flowing through the one-sided flow line 50 , 51 is input to the converter 31 via the DC reactor 41 , where it is inversely converted into transformed power and supplied to the AC system 11 via the transformer 21 . Considering the case where the converter 30 performs forward conversion and the converter 31 performs inverse conversion in this way,
Hereinafter, the converter 3o will be referred to as a forward converter, and the converter 31 will be referred to as an inverse converter.

従来、順変換器３０は定電流制御によシ運転をおこない
直流線＠５０の電流工ｄを決定し、逆変換器３１は定電
圧制御または定余裕制御により運転をおこ力い直流線路
５０の直流電圧ｖａ　２決定していた。Conventionally, the forward converter 30 is operated by constant current control to determine the current value d of the DC line @50, and the inverse converter 31 is operated by constant voltage control or constant margin control to determine the current value d of the DC line 50. The DC voltage va 2 was determined.

第２図は上記の制御をおこなっている場合の制御特性図
を示したものである。１−ｉと１−２とは順変換器３０
０制御特性を示し、ｌ−１と■−２は逆変換器３１の制
御特性を示している。FIG. 2 shows a control characteristic diagram when the above control is performed. 1-i and 1-2 are forward converters 30
0 control characteristics are shown, and l-1 and -2 show control characteristics of the inverse converter 31.

第８図は第２図の制御特性をつくり出す制御装置の要部
を示す機能ブロック図である。加算器７０には直流電流
設定直重ｄｐと直流電流工ｄとが人力し、その偏差信号
が定電流制御回路８０に入力される。さらに加算器７０
には′市流マージンΔ工ｄｐがスイッチ６０を介して印
加されている。加算器７１には直流型圧設定直■ｄｐと
直流電圧Ｖａとが入力し、その偏差信号は定電圧制御回
路８１に入力される。FIG. 8 is a functional block diagram showing the main parts of a control device that creates the control characteristics shown in FIG. 2. The adder 70 inputs the DC current setting direct weight dp and the DC current value d, and the deviation signal thereof is input to the constant current control circuit 80. Further adder 70
A commercial margin Δwork dp is applied through the switch 60 to . The adder 71 receives the DC type pressure setting value dp and the DC voltage Va, and its deviation signal is input into the constant voltage control circuit 81.

さらに直流重流工ｄと交流電圧Ｖａｃとは定余裕角制御
回路８２に人力している。定電流制御回路８０゜定電圧
制御回路８１及び定余裕角制御回路８２の各出力はそれ
ぞれ最小直選択回路９０に入力され、この最小匝選択回
路９０の出力として制御角αが定められる。Furthermore, the DC heavy current voltage d and the AC voltage Vac are manually supplied to a constant margin angle control circuit 82. The outputs of the constant current control circuit 80, the constant voltage control circuit 81, and the constant margin angle control circuit 82 are respectively input to the minimum direct selection circuit 90, and the control angle α is determined as the output of the minimum direct selection circuit 90.

第１図に示した順変換器３０と逆変換器３１とはそれぞ
れこの第８図に示した制御装置により制御されている。The forward converter 30 and inverse converter 31 shown in FIG. 1 are controlled by the control device shown in FIG. 8, respectively.

しかし順変換器３００制御装置ではスイッチ６０１は開
かれておシ、逆変換器３１の制御装置ではスイッチ６０
は閉じられている。これにより逆変換器３１０制御装置
では、加算器７０によシ直流電流設定直重ａｐが電流マ
ージン△ＩＣｕｐだけ減じられたことになシ、定電流制
御回路８０は第２図のｌｌ−２の特性を生じ、順変換器
３０の定電流制御回路８０によって生ずるＩ−２の特性
とは電流マージン△工ｄｐの差をもつことになる。順変
換器３０の１−ｉの制御特性は順変換器の特性で決る制
御角の最小直で運転をおこなう場合の特性である。However, in the forward converter 300 controller, switch 601 is open, and in the inverse converter 31 controller, switch 601 is open.
is closed. As a result, in the inverter 310 control device, the adder 70 realizes that the direct current setting weight ap has been reduced by the current margin ΔICup, and the constant current control circuit 80 This characteristic is different from the characteristic of I-2 generated by the constant current control circuit 80 of the forward converter 30 by a current margin Δwork dp. The control characteristic 1-i of the forward converter 30 is the characteristic when operating at the minimum straightness of the control angle determined by the characteristics of the forward converter.

定電圧制御回路８１は加算器７１からの偏差信号にし よって制御をおこなうが、順変換器３０では第１図の直
流電圧Ｖｄの向きを負の直とみるため、定電圧制御回路
８！からの制御角は定電圧制御回路８１で決る最大直と
なっている。一方逆変換器３１では第１図の直流電圧Ｖ
（１の向きを正の値とみるため、定電圧制御回路８１か
ら定電圧制御によって決る制御角とな９、第２図のＩｔ
−２の特性が作られる。The constant voltage control circuit 81 performs control based on the deviation signal from the adder 71, but since the forward converter 30 considers the direction of the DC voltage Vd in FIG. 1 to be negative direct, the constant voltage control circuit 8! The control angle from is the maximum angle determined by the constant voltage control circuit 81. On the other hand, in the inverter 31, the DC voltage V in FIG.
(In order to regard the direction of 1 as a positive value, the control angle determined by constant voltage control from the constant voltage control circuit 81 is 9, It
−2 characteristics are created.

定余裕角制御回路８２は正言運転時に逆変換器８１が転
流失敗をおこさないよう一定の余裕角ｒを確保させるだ
めの制御角を発生させるだめの回路であシ、自流電流１
ｄと交流電圧Ｖａｃとがら、−ｈｖ’Ｔｘ工ｄ 制御角＝ｃｏｓ　　（−−ｃｏｓｒ　）　　＝　　（１
）ａｃ で決定される制御角を算出している。The constant margin angle control circuit 82 is a circuit that generates a control angle to ensure a constant margin angle r so that the inverse converter 81 does not cause commutation failure during positive operation, and has a self-current current of 1.
d and AC voltage Vac, -hv'Tx d Control angle = cos (--cosr) = (1
) ac is calculated.

以上説明した定電流回路８ｏと定電圧回路８１と定余裕
角回路８２とから出力される制御角のうち、最小の制御
角を最小１直選択回路９ｏで選択し、制御角αとして順
変換器３ｏと逆変倹器３１とを運転する。Among the control angles outputted from the constant current circuit 8o, constant voltage circuit 81, and constant margin angle circuit 82 described above, the minimum control angle is selected by the minimum one direct selection circuit 9o, and the control angle is set as the control angle α to the forward converter. 3o and the reverse transformer 31 are operated.

これによシｊ険変換器３ｏでは、第２図１−１１とニー
２の制御特性が得られ、逆変換器３１ではｌ−１と１１
−２の制御特性が得られて、第１図の直流送電系統は第
２図の４点で運転されることになる。すなわち順変換器
３ｏは定電流回路８ｏで決定された制御角で制御され、
逆変換器３１は定電圧制御回路８１または定余裕角制御
回路８２で決定された制御角で制御されることになる。As a result, the safety converter 3o obtains the control characteristics of 1-11 and knee 2 in FIG. 2, and the inverse converter 31 obtains the control characteristics of l-1 and 11
-2 control characteristics are obtained, and the DC power transmission system shown in FIG. 1 is operated at the four points shown in FIG. 2. That is, the forward converter 3o is controlled by the control angle determined by the constant current circuit 8o,
The inverse converter 31 is controlled by the control angle determined by the constant voltage control circuit 81 or the constant margin angle control circuit 82.

〔背景技術の問題点〕[Problems with background technology]

以上説明した第８図の制御回路は従来アナログ回路とし
て構成されていた。したがって定電流制御回路８０や定
電圧制御回路８１は第４図に示すような１次遅れ進み回
路で構成されることが多かった。The control circuit shown in FIG. 8 described above has conventionally been configured as an analog circuit. Therefore, the constant current control circuit 80 and the constant voltage control circuit 81 are often constructed of first-order delay/lead circuits as shown in FIG.

第４図中Ｒ１＃　”Ｓ　ｅ　Ｒ４は抵抗を、Ｃはコンデ
ンサｆ：ｂ　　Ａは演算増巾器をそれぞれ示している。In FIG. 4, R1#"S e R4 represents a resistor, C represents a capacitor f:b, and A represents an operational amplifier.

第４図の１次遅れ進み回路の伝達関数は（２）式のごと
くなる。The transfer function of the first-order lag/lead circuit shown in FIG. 4 is as shown in equation (2).

ここで（２）式を伝達関数のブロック図として表わした
のが第４図である。第４図に示すようなアナログ回路で
構成した１次遅れ進み回路で第３図に示す定電流制御回
路８ｏや定電圧制御回路８１を構成した場合、次のよう
な不具合があった。FIG. 4 shows equation (2) as a block diagram of a transfer function. When the constant current control circuit 8o and the constant voltage control circuit 81 shown in FIG. 3 are constructed with a first-order delay/lead circuit constructed from an analog circuit as shown in FIG. 4, the following problems occur.

電力変換装置の起動時に特定の制御角α、から電力変換
装置を起動する目的で、第８図に示す最小（直選択回路
９０の出力αを起動時のみ制御角α１に設定して制御を
開始しても、（２）式のＴ１に相当する時定数でしか定
電流制御回路８０と定電圧制御回路８１とが応答しない
ため、最小値選択回路９０は起動時に設定した制御角α
、とはかけ離れた定電流制御回路８０または定電圧制御
回路８１の出力を制御角最小瞳として選択して出力して
しまう。このため電力変換装置の起動に擾乱を与えてし
まう。In order to start the power converter from a specific control angle α when starting the power converter, control is started by setting the output α of the minimum (direct selection circuit 90) to the control angle α1 only at the time of starting as shown in FIG. Even if the constant current control circuit 80 and the constant voltage control circuit 81 respond only with a time constant corresponding to T1 in equation (2), the minimum value selection circuit 90 uses the control angle α set at startup.
, the output of the constant current control circuit 80 or the constant voltage control circuit 81, which is far from , is selected and outputted as the control angle minimum pupil. This causes disturbance in the startup of the power conversion device.

さらにたとえば第１図の系統構成において、順変換器３
０と逆変換器３１との運転を逆にする潮流反転をおこな
うため、順変換器３０の側の制御装置のスイッチ６０を
閉じ、逆変換器３１の側の制御装置のスイッチ６０を開
いた場合、今まで順変換をおこなっていた変換器３０の
制御装置の定電圧制御回路８１の出力は最大制御角１８
０°から第２図に示すＡ点に相当する運転制御角である
１４０°付近まで（２）式のＴ、で定まる時定数で動い
て・くる。逸散定電圧制御回路８１の時定数ＴＩは１秒
程度と遅く、定電流制御回路８０の時定数ＴＩは数１０
０ミｌＪ秒程度と高速に設定しである。このため潮流反
転開始直後は、順変換から逆変換になろうとする変圧器
３０の制御角は時間的にみれば、定電流制御回路８０、
定余裕角制御回路８２、定電圧制御回路８１の出力の順
に最小値選択回路９０で選択されて出力される。定余裕
角制御回路８２の出力が選択されるのは、定電圧制御回
路８１の出力が最大制御角の１８０°から１秒程度とい
うおそい時定数Ｔ１で１４０°付近１でゆっくり動くか
らである。このため順変換から逆変換へと移行した変換
器３０は制御角αとして定余裕角制御回路８２の出力が
選択されている間に過電圧となってしまう。このような
不具合は第４図に示す回路でコンデンサＯの充放電を加
減することにより防ぐことができるが、アナログ回路で
これを実現することは非常に困難である。Furthermore, for example, in the system configuration shown in FIG.
When the switch 60 of the control device on the side of the forward converter 30 is closed and the switch 60 of the control device on the side of the inverse converter 31 is opened in order to perform a power flow reversal that reverses the operation of the zero and inverse converter 31. , the output of the constant voltage control circuit 81 of the control device of the converter 30, which has been performing forward conversion, is the maximum control angle of 18
It moves from 0° to around 140°, which is the operation control angle corresponding to point A shown in FIG. 2, with a time constant determined by T in equation (2). The time constant TI of the dissipation constant voltage control circuit 81 is as slow as about 1 second, and the time constant TI of the constant current control circuit 80 is several tens of seconds.
It is set at a high speed of about 0 milJ seconds. Therefore, immediately after the start of power flow reversal, the control angle of the transformer 30, which is about to change from forward conversion to inverse conversion, is determined by the constant current control circuit 80,
The outputs of the constant margin angle control circuit 82 and the constant voltage control circuit 81 are selected in this order by the minimum value selection circuit 90 and output. The output of the constant margin angle control circuit 82 is selected because the output of the constant voltage control circuit 81 moves slowly from the maximum control angle of 180° to around 140°1 with a slow time constant T1 of about 1 second. For this reason, the converter 30 that has transitioned from forward conversion to inverse conversion becomes overvoltage while the output of the constant margin angle control circuit 82 is selected as the control angle α. Although such a problem can be prevented by controlling the charging and discharging of the capacitor O using the circuit shown in FIG. 4, it is extremely difficult to realize this using an analog circuit.

〔発明の目的〕[Purpose of the invention]

この発明は上述のごとき不具合を解決するためになされ
たもので、その目的は、−力変換装兜の起動時や制御切
多換え時に生ずる擾乱を少くすることのできる電力変換
装置の制御方法を提供するにある。This invention was made in order to solve the above-mentioned problems, and its purpose is to provide a control method for a power conversion device that can reduce disturbances that occur when starting a force conversion device or switching control. It is on offer.

〔発明の概要〕[Summary of the invention]

この発明では上記目的を達成するために、所定のタイミ
ング毎に１次遅れ進み回路を有する制御回路の演算全実
行して制御角を算出し、前記制御角に基づいて電力変換
装置の制御をおこなうに際し、前記重力変換装置が前記
制御角の急変を要求する場合には、今回のタイミングに
おける前記制御回路の出力呟と１次遅れ項とを次のタイ
ミングにおける初期呟として設定することを特徴として
いる。In order to achieve the above object, the present invention calculates a control angle by executing all calculations of a control circuit having a first-order lag/lead circuit at each predetermined timing, and controls a power conversion device based on the control angle. In this case, when the gravity conversion device requests a sudden change in the control angle, the output pulse of the control circuit at the current timing and the first-order lag term are set as the initial pulse at the next timing. .

実施例 以下この発明の実施列を図面に基づいて詳細に説明する
。EXAMPLES Below, embodiments of the present invention will be explained in detail based on the drawings.

第６図はこの発明の詳細な説明するための機能ブロック
図であり、第７図および第８図はその動作ｔ−説明する
ｆｃめのフローチャートである。第７図に示すフローチ
ャートは第８図に示す制御回路をディジタル制御回路と
して具現した場合の動作を示している。す々わち所定の
タイミングごとのサンプリングパルスごとに制御演算プ
ログラムを実行し、直流電流設定値工ｄｐ、直流電流工
ｄ等を人力して定電流制御演算（ＡＯＲ）と定電圧制御
演算（ＡＶ４）と定電圧制御演算（ａｘＣ）とを実行し
、その結果制御角として最小となるものを選択したのち
、制御角αとして出力する。このような演算動作をサン
プリングパルスを受は取るたびに実行する。FIG. 6 is a functional block diagram for explaining the present invention in detail, and FIGS. 7 and 8 are flowcharts for explaining its operation. The flowchart shown in FIG. 7 shows the operation when the control circuit shown in FIG. 8 is implemented as a digital control circuit. In other words, a control calculation program is executed for each sampling pulse at a predetermined timing, and the DC current setting value dp, DC current value d, etc. are manually calculated to perform constant current control calculation (AOR) and constant voltage control calculation (AV4). ) and a constant voltage control calculation (axC), and after selecting the minimum control angle as a result, it is output as the control angle α. Such a calculation operation is executed every time a sampling pulse is received or taken.

第６図は第４図に示す１次遅れ進み回路の伝達関数を表
わす（２）式を変形してブロック図として表わしたもの
である。すなわち（２）式は、と表わせるため、人カニ
と（３）式のに１との積であるＴＪＫ　＆Ｄ項と、へカ
ニとに、との積であるＩ、（）項に１次遅れ項１／（１
＋Ｔ、−ｓ）　　をかけたＬＡＧ項の加算値が出力石と
なっていることを示している。FIG. 6 is a modified block diagram of equation (2) representing the transfer function of the first-order lag/lead circuit shown in FIG. In other words, since equation (2) can be expressed as Delay term 1/(1
+T, -s) indicates that the added value of the LAG term is the output stone.

第４図の回路をプログラムによるデジタル演算として実
現するためには、サンプリング信号の度毎に差分方程式
（４）を演算するプログラムを作ればここで添字ｎは今
回のサンプリング時の値であることを示し、ｎ−１は前
回のサンプリング時の［直であることを示している。ま
たＴ８はサンプリング信号の周期である。ただし差分方
程式（４）をそのまま実行した場合には、前述したアナ
ログ回路の場合と同様に起動時におこる不具合がそのま
ま解消されないで残ってしまう。そこで第８図にフロー
チャートで示すように、サンプリング信号ごとに定電流
制御演算や定電圧制御演算として１次遅れ進み演算を（
４）式の差分方程式に基づいて■の部分のプログラムと
して実行するが、変換器の起動開始時には今回の出力直
方ｎと遅れ項’ＬＡＧ、−１とを次回のサンプリング時
に使用する初期１直として起動位相の制御角と同じ直に
制御する■の部分のプログラムを実行する。このように
することにより定電流制御回路の出力は、所定の制御角
から時定数Ｔ、に相当する時間遅れを持って移行制御さ
れる。したがって起動時に電力変換装置が発生する擾乱
を少なくできる。In order to realize the circuit shown in Figure 4 as a digital calculation by a program, create a program that calculates the difference equation (4) every time the sampling signal is obtained. , and n-1 indicates [direct] at the time of the previous sampling. Further, T8 is the period of the sampling signal. However, if the differential equation (4) is executed as is, the problem that occurs at startup will remain unresolved, as in the case of the analog circuit described above. Therefore, as shown in the flowchart in Figure 8, first-order lag/lead calculations are performed as constant current control calculations and constant voltage control calculations for each sampling signal (
4) The part (■) is executed as a program based on the difference equation in Equation 4). At the start of converter startup, the current output rectangular n and the delay term 'LAG, -1 are used as the initial 1st shift to be used at the next sampling time. Execute the program in the part (■) that directly controls the control angle of the starting phase. By doing so, the output of the constant current control circuit is controlled to shift from a predetermined control angle with a time delay corresponding to the time constant T. Therefore, disturbances generated by the power converter during startup can be reduced.

第９図のフローチャートはこの発明の能の実施列を説明
するためのものであって、第８図のフローチャートに比
較して■で示した部分が異っている。このフローチャー
トは第１図の直流送電装置で潮流反転をおこそうとする
場合に用いられる。The flowchart of FIG. 9 is for explaining the implementation sequence of the functions of the present invention, and is different from the flowchart of FIG. 8 in the parts indicated by ■. This flowchart is used when attempting to cause power flow reversal in the DC power transmission device shown in FIG.

す彦わち潮流反転をおこなう場合、定電圧制御回路の時
定数が遅いため、定電圧制御回路の出力が所定の制御角
に到達するまでに長時間を有し、このため定電圧制御回
路が、一定時間働くことになり、順変換から逆変換に移
った変換器は過電圧となる不具合があったが、この発明
のように潮流反転信号とともに定電圧制御回路の出力を
所定の制御角になるように設定するため、変換器は過電
圧を発生しにくくなる。In other words, when performing power flow reversal, the time constant of the constant voltage control circuit is slow, so it takes a long time for the output of the constant voltage control circuit to reach the predetermined control angle. , the converter works for a certain period of time, and the converter that moves from forward conversion to inverse conversion has a problem of overvoltage, but as in this invention, the output of the constant voltage control circuit is adjusted to a predetermined control angle along with the power flow reversal signal. This setting makes the converter less likely to generate overvoltage.

〔発明の効果〕〔Effect of the invention〕

以上実姉列に基づいて詳細に説明したように、この発明
はデジタル制御装置として構成される′電力変換装置を
制御するにさいして定電流制御や定電圧制御等でおこな
う一次進み遅れ演算や比的積分演算等の制御演算をプロ
グラムで構成し、制御の切シ換え時に制御演算の遅れ分
に相当する演算の途中結果を排塵演算の最終結果が所定
の演算結果となるように設定したので、制御の切り換え
時に電力変換装置が発生する擾乱を少なくできるという
利点がある。As explained above in detail based on the actual series, the present invention is capable of performing primary lead/lag calculations and relative Control calculations such as integral calculations are configured in a program, and when the control is switched, the intermediate results of the calculations corresponding to the delay in the control calculations are set so that the final result of the dust removal calculation becomes the predetermined calculation result. This has the advantage that disturbances generated by the power converter device during control switching can be reduced.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は電力変換装置の一列としての直流２端子送邂系
統図、第２図は第１図の制御特性図、第８図は電力変換
装置の制御回路の一列を示すブロック図、第４図はアナ
ログ回路による１次遅れ進み回路の一列を示す回路図、
第５図は第４図の伝達関数を示すブロック図、第６図は
第５図を変形して示したブロック図、第７図は第３図に
示す制御口［−ディジタル演算として実行するための動
作を示すフローチャート、第８図はこの発明の一実施例
の動作を説明するだめのフローチャート、第９図はこの
発明の能の実施列の動作を説明するためのフローチャー
トである。 α・・・最小匝制御角、ＬＡＧ・・・１次遅れ項、■・
・・入力１直、石・・・出力１直。 出願人代理人　　猪　　股　　　　　清第３図 第４図 免６図 第９図Fig. 1 is a DC two-terminal feed system diagram as a line of power converters, Fig. 2 is a control characteristic diagram of Fig. 1, Fig. 8 is a block diagram showing a line of control circuits of the power converter, and Fig. The figure is a circuit diagram showing a line of first-order delay/lead circuits using analog circuits.
5 is a block diagram showing the transfer function of FIG. 4, FIG. 6 is a block diagram showing a modification of FIG. 5, and FIG. 7 is a block diagram showing the control port shown in FIG. FIG. 8 is a flowchart for explaining the operation of an embodiment of the present invention, and FIG. 9 is a flowchart for explaining the operation of an embodiment of the present invention. α...Minimum control angle, LAG...1st order lag term, ■・
...1 shift of input, stone...1 shift of output. Applicant's Representative Kiyoshi Inomata Figure 3 Figure 4 Figure 6 Figure 9

Claims (1)

【特許請求の範囲】 （１）所定のタイミング毎Ｋ１次遅れ進み回路を有する
制御回路の演算を実行して制御角を算出し、前記制御角
に基づいて電力変換装置の制御をおこなうに際し、前記
重力変換装置が前記制御角の急変を要求する場合には、
今回のタイミングにおける前記制御回路の出力１ｔｆ（
Ｏｎ）と１次遅れ項（ＬＡ（）ｎ、　）とを次のタイミ
ングにおける初期匝として設定することを特徴とする電
力変換装置の制御方法。 ■）前記制御角の急変を要求する場合が電力変換装置の
起動時であることを特徴とする特許請求の範囲第（１）
項記載の電力変換装置の制御方法。 （８）前記制御角の急変を要求する場合が前記制御回路
の制御の切替時であることを特徴とする特許請求の範囲
第（１）項記載の電力変換装置の制御方法。[Scope of Claims] (1) When calculating a control angle by calculating a control circuit having a K1-order lag/lead circuit at every predetermined timing, and controlling the power conversion device based on the control angle, If the gravity conversion device requires a sudden change in the control angle,
The output 1tf of the control circuit at this timing (
1. A method for controlling a power conversion device, characterized in that a first-order lag term (LA()n, ) is set as an initial value at the next timing. ■) Claim (1) characterized in that the case where the sudden change of the control angle is requested is when the power conversion device is started up.
A method for controlling a power converter according to section 1. (8) The method for controlling a power conversion device according to claim (1), wherein the sudden change in the control angle is requested when the control of the control circuit is switched.
JP8891083A 1983-05-20 1983-05-20 Controlling method of power converter Pending JPS59216475A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8891083A JPS59216475A (en) 1983-05-20 1983-05-20 Controlling method of power converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8891083A JPS59216475A (en) 1983-05-20 1983-05-20 Controlling method of power converter

Publications (1)

Publication Number Publication Date
JPS59216475A true JPS59216475A (en) 1984-12-06

Family

ID=13956093

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8891083A Pending JPS59216475A (en) 1983-05-20 1983-05-20 Controlling method of power converter

Country Status (1)

Country Link
JP (1) JPS59216475A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009217762A (en) * 2008-03-13 2009-09-24 Hitachi Ltd Controller of power transducer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009217762A (en) * 2008-03-13 2009-09-24 Hitachi Ltd Controller of power transducer

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