JP3254999B2 - PWM control self-excited rectifier - Google Patents
PWM control self-excited rectifierInfo
- Publication number
- JP3254999B2 JP3254999B2 JP01135996A JP1135996A JP3254999B2 JP 3254999 B2 JP3254999 B2 JP 3254999B2 JP 01135996 A JP01135996 A JP 01135996A JP 1135996 A JP1135996 A JP 1135996A JP 3254999 B2 JP3254999 B2 JP 3254999B2
- Authority
- JP
- Japan
- Prior art keywords
- phase
- self
- power supply
- polarity
- angle signal
- 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.)
- Expired - Lifetime
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- Rectifiers (AREA)
- Power Conversion In General (AREA)
- Inverter Devices (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、商用電源の交流
電力を自励式整流器により直流電力に変換して負荷に給
電する自励式整流装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-excited rectifier for converting AC power of a commercial power supply into DC power by a self-excited rectifier and supplying power to a load.
【０００２】[0002]
【従来の技術】図８は、この種のＰＷＭ制御自励式整流
装置の従来例を示すブロック構成図である。図８におい
て、１は商用電源、１０はＰＷＭ制御自励式整流装置、
２はＰＷＭ制御自励式整流装置１０の出力に接続される
インバータなどの負荷である。2. Description of the Related Art FIG. 8 is a block diagram showing a conventional example of this type of PWM control self-excited rectifier. 8, 1 is a commercial power supply, 10 is a PWM control self-excited rectifier,
Reference numeral 2 denotes a load such as an inverter connected to the output of the PWM control self-excited rectifier 10.
【０００３】ＰＷＭ制御自励式整流装置１０は、ＩＧＢ
Ｔなどの自己消弧形半導体素子とダイオードとを逆並列
し、これをブリッジ接続した自励式整流器の主回路１
１、自励式整流器の交流リアクトル１２、自励式整流器
の出力の平滑用のコンデンサ１３、商用電源１の相電圧
を検出する相電圧検出器１４、商用電源１のＲ相の相電
圧を絶縁変換する絶縁変換器１５、絶縁変換器１５を介
した商用電源１のＲ相の相電圧の位相に同期した角度信
号（θ，θ＝０°〜３６０°）を発生する角度信号発生
手段１６、該角度信号（θ）に基づいた正弦波を発生す
る正弦波発生器１７、該角度信号に１２０°を加算した
値（θ1 ）に基づいた正弦波を発生する正弦波発生器１
８、電圧設定器１９の電圧設定値とコンデンサ１３の両
端の直流電圧を絶縁変換器２０を介して検出した電圧検
出値との偏差により電圧調節動作をする電圧調節器２
１、電圧調節器２１の出力と正弦波発生器１７の出力と
を乗算器２２で乗算して得られるＲ相電流設定値（ｉR
* ）と電圧調節器２１の出力と正弦波発生器１８の出力
とを乗算器２３で乗算して得られるＴ相電流設定値（ｉ
T * ）とからＳ相電流設定値（ｉS * ）を求め、このｉ
R * ，ｉS * ，ｉT * と電流検出器２４で得られたＲ相
電流検出値（ｉR ），Ｓ相電流検出値（ｉS ），Ｔ相電
流設定値（ｉT ）とのそれぞれの偏差を電流調節器２
５，２６，２７で調節演算をし、電流調節器２５，２
６，２７それぞれの出力からキャリア信号発生器２８と
比較器２９とによりＰＷＭ制御を行い、比較器２９の出
力をゲート駆動回路３０により自励式整流器の主回路１
１のそれぞれの自己消弧形半導体素子にゲート信号を与
える構成である。The PWM control self-excited rectifier 10 is an IGB
Self-extinguishing type semiconductor element such as T and diode are anti-parallel
And the main circuit 1 of the self-excited rectifier
1. Self-excited rectifier AC reactor 12, Self-excited rectifier
For smoothing the output of the power supply and the phase voltage of the commercial power supply 1
, A phase voltage detector 14 for detecting the R phase of the commercial power supply 1
Insulation converter 15 for insulating conversion of pressure, via insulation converter 15
Signal synchronized with the phase of the R-phase voltage of the commercial power supply 1
Signal (θ, θ = 0 ° -360 °)
Means 16 for generating a sine wave based on the angle signal (θ)
Sine wave generator 17 adds 120 ° to the angle signal
Value (θ1) That generates a sine wave based on
8. Both the voltage setting value of the voltage setting device 19 and the capacitor 13
Voltage detection which detects the DC voltage at the end through the insulation converter 20
A voltage controller 2 that performs a voltage adjustment operation according to a deviation from the output value
1. The output of the voltage regulator 21 and the output of the sine wave generator 17
Phase current set value (i) obtained by multiplyingR
*), The output of the voltage regulator 21 and the output of the sine wave generator 18
And a T-phase current set value (i
T *) And the S-phase current set value (iS *), And this i
R *, IS *, IT *And the R phase obtained by the current detector 24
Current detection value (iR), S-phase current detection value (iS), T-phase
Flow setting value (iT) And the current controller 2
The adjustment operation is performed at 5, 26, 27, and the current adjusters 25, 2
6, 27 from the output of each carrier signal generator 28
PWM control is performed by the comparator 29 and the output of the comparator 29 is
Main circuit 1 of self-excited rectifier by gate drive circuit 30
A gate signal to each of the self-extinguishing semiconductor devices
Configuration.
【０００４】図８に示した従来のＰＷＭ制御自励式整流
装置１０において、角度信号発生手段１６は、周知の位
相比較器，電圧制御発振器などから構成されるＰＬＬを
採用し、商用電源１のＲ相の相電圧の位相に同期した角
度信号（θ，θ＝０°〜３６０°）を発生するようにし
ていた。上述のＰＷＭ制御自励式整流装置１０全体は周
知の技術を用いたものであり、ここでは詳細動作の説明
を省略する。In the conventional PWM control self-excited rectifier 10 shown in FIG. 8, the angle signal generating means 16 employs a PLL comprising a well-known phase comparator, a voltage controlled oscillator and the like. An angle signal (θ, θ = 0 ° to 360 °) synchronized with the phase of the phase voltage is generated. The above-described PWM control self-excited rectifier 10 as a whole uses a known technique, and a detailed description of the operation will be omitted here.
【０００５】[0005]
【発明が解決しようとする課題】上述の従来の角度信号
発生手段によると、例えば商用電源に接続された他の電
力変換装置の電力用半導体デバイスの転流動作に基づい
て発生する転流振動，電源陥没などの擾乱によって、前
記ＰＬＬの位相比較器の動作が乱れ、その結果、前記角
度信号が乱れるという問題があった。According to the above-described conventional angle signal generating means, for example, commutation vibration generated based on the commutation operation of a power semiconductor device of another power converter connected to a commercial power supply, The operation of the phase comparator of the PLL is disturbed by disturbance such as a power supply collapse, and as a result, the angle signal is disturbed.
【０００６】この発明の目的は、上記問題点を解決する
ＰＷＭ制御自励式整流装置を提供することにある。An object of the present invention is to provide a PWM control self-excited rectifier which solves the above problems.
【０００７】[0007]
【課題を解決するための手段】この第１の発明は、商用
電源の交流電力を自励式整流器により直流電力に変換し
て負荷に給電する自励式整流装置であって、前記自励式
整流器の出力の直流電圧を検出し、この直流電圧を所定
の値になるように電圧の調節演算をし、この電圧の調節
演算により得られた電流指令値（直流量）と前記商用電
源の位相に同期した角度信号とにより各相電流指令値
（交流量）を演算し、この各相電流指令値に追従するよ
うに前記商用電源の各相電流を検出して電流の調節演算
をし、この各相の電流の調節演算をした出力とキャリア
信号とによりＰＷＭ制御された各相ゲート信号を発生
し、この各相ゲート信号により前記自励式整流器の自己
消弧形半導体素子を制御するＰＷＭ制御自励式整流装置
において、前記商用電源の位相に同期した角度信号を発
生する角度信号発生手段として、前記商用電源の相電圧
のノイズ成分を除去するフィルタと、該フィルタの出力
の電圧を極性信号に変換する極性信号変換器と、該極性
信号の立ち上がり又は立ち下がりに同期した位相で所定
の周波数の発振をするＰＬＬ回路（Ｐｈａｓｅ−Ｌｏｃ
ｋｅｄ Ｌｏｏｐ）と、該ＰＬＬ回路の出力と予め設定
した少なくとも前記フィルタにおける位相遅れを補正す
る位相補正量とから前記角度信号を演算する角度信号演
算器とを備える。According to a first aspect of the present invention, there is provided a self-excited rectifier for converting AC power of a commercial power supply into DC power by a self-excited rectifier and supplying power to a load. , And adjusts the voltage so that the DC voltage becomes a predetermined value, and synchronizes the current command value (DC amount) obtained by the voltage adjustment operation with the phase of the commercial power supply. Each phase current command value (AC amount) is calculated based on the angle signal, the phase current of the commercial power supply is detected so as to follow the phase current command value, and the current adjustment calculation is performed. A PWM control self-excited rectifier for generating each phase gate signal subjected to PWM control based on an output obtained by performing a current adjustment operation and a carrier signal, and controlling the self-extinguishing type semiconductor device of the self-excited rectifier using each phase gate signal. In the above, A filter for removing a noise component of a phase voltage of the commercial power supply, a polarity signal converter for converting a voltage of an output of the filter into a polarity signal, as an angle signal generating means for generating an angle signal synchronized with the phase of A PLL circuit (Phase-Loc) that oscillates at a predetermined frequency with a phase synchronized with the rising or falling of the polarity signal
(Ked Loop), and the output of the PLL circuit and at least a preset phase delay in the filter are corrected.
That from a phase correction amount and a angle signal calculator for calculating the angle signal.
【０００８】この第２の発明は前記第１の発明におい
て、前記角度信号発生手段に前記極性信号から商用電源
の定格周波数を判別し、この判別した定格周波数に基づ
いて前記位相補正量の値を切り替える切替回路を付加す
る。この第３の発明は前記第１の発明において、前記角
度信号発生手段に前記角度信号の０°の時点の前記商用
電源の相電圧の極性を判別し、この判別した極性が正な
らば前記位相補正量を所定値増加させ、負ならば該位相
補正量を所定値減少させる位相補正量調整回路を付加す
る。According to a second aspect of the present invention, in the first aspect, the angle signal generating means determines a rated frequency of a commercial power supply from the polarity signal, and determines the value of the phase correction amount based on the determined rated frequency. A switching circuit for switching is added. According to a third aspect of the present invention, in the first aspect, the angle signal generating means determines the polarity of the phase voltage of the commercial power supply at the time of 0 ° of the angle signal. A phase correction amount adjusting circuit for increasing the correction amount by a predetermined value and, if negative, decreasing the phase correction amount by a predetermined value is added.
【０００９】この第４の発明は前記第１の発明におい
て、前記角度信号発生手段に前記商用電源の相電圧の極
性を判別し、この判別した極性が負から正になった時点
の前記角度信号の値により前記位相補正量を所定値増加
または減少させる位相補正量調整回路を付加する。この
発明によれば、角度信号発生手段に商用電源の相電圧の
ノイズ成分を除去するフィルタを設けることにより先述
の相電圧の擾乱をカットでき、このフィルタによる位相
遅れを前記位相補正量により補正するようにしている。In a fourth aspect based on the first aspect, the angle signal generating means determines the polarity of the phase voltage of the commercial power supply, and the angle signal at the time when the determined polarity changes from negative to positive. And a phase correction amount adjusting circuit for increasing or decreasing the phase correction amount by a predetermined value according to the value of. According to the present invention, the above-described disturbance of the phase voltage can be cut by providing the angle signal generating means with the filter for removing the noise component of the phase voltage of the commercial power supply, and the phase delay due to this filter is corrected by the phase correction amount. Like that.
【００１０】[0010]
【発明の実施の形態】図１は、この発明の実施の形態を
示すＰＷＭ制御自励式整流装置のブロック構成図であ
り、図８に示した従来例と同一機能を有するものには同
一符号を付してその説明を省略する。すなわち図１にお
いて、ＰＷＭ制御自励式整流装置４０，５０，６０，７
０にはそれぞれ角度信号発生手段４１，５１，６１，７
１が備えられている。FIG. 1 is a block diagram of a PWM control self-excited rectifier according to an embodiment of the present invention, in which components having the same functions as those of the conventional example shown in FIG. The description is omitted here. That is, in FIG. 1, the PWM control self-excited rectifiers 40, 50, 60, 7
0 is the angle signal generating means 41, 51, 61, 7 respectively.
1 is provided.
【００１１】図２は、この発明の第１の実施例を示すＰ
ＷＭ制御自励式整流装置４０の角度信号発生手段４１の
詳細回路構成図である。図２において、商用電源１の位
相に同期した角度信号θを発生する角度信号発生手段４
１は、商用電源１のＲ相の相電圧を絶縁変換器１５を介
して入力し、この電圧のノイズ成分を除去する例えば抵
抗，コンデンサからなるフィルタ４２と、フィルタ４２
の出力の電圧を極性信号に変換する例えばシュミット回
路からなる極性信号変換器４３と、該極性信号の立ち上
がり又は立ち下がりに同期した位相で所定の周波数の発
振をするＰＬＬ回路４４と、ＰＬＬ回路４４の出力と予
め設定した位相補正量θC とをデジタル的に加算演算を
して角度信号θを出力する角度信号演算器４５とから構
成している。FIG. 2 is a block diagram showing a first embodiment of the present invention.
FIG. 3 is a detailed circuit configuration diagram of an angle signal generation unit 41 of the WM control self-excited rectifier 40. In FIG. 2, an angle signal generating means 4 for generating an angle signal θ synchronized with the phase of the commercial power supply 1
Reference numeral 1 denotes an R-phase voltage of the commercial power supply 1 which is input through the insulation converter 15 and removes a noise component of the voltage.
, A polarity signal converter 43 composed of, for example, a Schmitt circuit, which converts the output voltage into a polarity signal, a PLL circuit 44 which oscillates at a predetermined frequency with a phase synchronized with the rise or fall of the polarity signal, and a PLL circuit 44 And an angle signal calculator 45 for digitally adding the output of the above and a preset phase correction amount θ C to output an angle signal θ.
【００１２】図２における位相補正量θC は、フィルタ
４２による商用電源１の基本波の位相遅れと、位相比較
器，電圧制御発振器などから構成されるＰＬＬ４４によ
る位相遅れとを補正する値であって、この値により商用
電源１の基本波の０°のときの位相と角度信号θが０°
の時の位相とを同期させる。図３は、この発明の第２の
実施例を示すＰＷＭ制御自励式整流装置５０の角度信号
発生手段５１の詳細回路構成図であり、図２に示したこ
の発明の第１の実施例と同一機能を有するものには同一
符号を付している。The phase correction amount θ C in FIG. 2 is a value for correcting the phase delay of the fundamental wave of the commercial power supply 1 by the filter 42 and the phase delay by the PLL 44 composed of a phase comparator, a voltage controlled oscillator and the like. From this value, the phase and angle signal θ at 0 ° of the fundamental wave of the commercial power supply 1 are 0 °.
Synchronize with the phase at the time. FIG. 3 is a detailed circuit configuration diagram of the angle signal generating means 51 of the PWM control self-excited rectifier 50 according to the second embodiment of the present invention, which is the same as that of the first embodiment of the present invention shown in FIG. Those having functions are denoted by the same reference numerals.
【００１３】図３において、角度信号発生手段５１には
フィルタ４２、極性信号変換器４３ＰＬＬ回路４４、角
度信号演算器４５の他に、前記極性信号から商用電源１
の定格周波数を例えばカウンタ回路の計数値などで判別
し、この判別した定格周波数に基づいて位相補正量
θC1，θC2のいずれかに切り替える切替回路５２を付加
している。In FIG. 3, the angle signal generating means 51 includes a filter 42, a polarity signal converter 43, a PLL circuit 44, and an angle signal calculator 45.
And a switching circuit 52 for switching to one of the phase correction amounts θ C1 and θ C2 based on the determined rated frequency.
【００１４】図３における位相補正量θC1，θC2は、例
えば商用電源１の定格周波数が５０Ｈｚか６０Ｈｚかに
よるフィルタ４２とＰＬＬ４４とが有する位相遅れを補
正する値であって、この値により商用電源１の基本波が
０°の時の位相と、角度信号θが０°の時の位相とを同
期させる。図４は、この発明の第３の実施例を示すＰＷ
Ｍ制御自励式整流装置６０の角度信号発生手段６１の詳
細回路構成図であり、図２に示したこの発明の第１の実
施例と同一機能を有するものには同一符号を付してい
る。The phase correction amounts θ C1 and θ C2 in FIG. 3 are values for correcting the phase lag of the filter 42 and the PLL 44 depending on whether the rated frequency of the commercial power supply 1 is 50 Hz or 60 Hz, for example. The phase when the fundamental wave of the power supply 1 is 0 ° is synchronized with the phase when the angle signal θ is 0 °. FIG. 4 shows a PW according to a third embodiment of the present invention.
FIG. 3 is a detailed circuit configuration diagram of the angle signal generating means 61 of the M-control self-excited rectifier 60, in which components having the same functions as those of the first embodiment of the present invention shown in FIG.
【００１５】図４において、角度信号発生手段６１には
フィルタ４２、極性信号変換器４３ＰＬＬ回路４４、角
度信号演算器４５の他に、前記角度信号の０°の時点の
商用電源１のＲ相の相電圧の極性とデジタル値を取り込
み、この極性が正ならば位相補正量θC を該デジタル値
に基づいて増加させ、負ならば該位相補正量を該デジタ
ル値に基づいて減少させるべくＡ／Ｄコンバータ６２ａ
と補正量演算回路６２ｂとからなる位相補正量調整回路
６２を付加している。In FIG. 4, an angle signal generating means 61 includes, in addition to a filter 42, a polarity signal converter 43, a PLL circuit 44, and an angle signal calculator 45, the R phase of the commercial power supply 1 at the time of 0 ° of the angle signal. The polarity and the digital value of the phase voltage are fetched, and if the polarity is positive, the phase correction amount θ C is increased based on the digital value, and if the polarity is negative, the phase correction amount is decreased based on the digital value. D converter 62a
And a phase correction amount adjusting circuit 62 composed of a correction amount calculating circuit 62b.
【００１６】図５は、位相補正量調整回路６２の動作を
説明する波形図である。図５において、絶縁変換器１５
を介した商用電源１のＲ相の相電圧（図５（イ））をＡ
／Ｄコンバータ６２ａによりデジタル値に変換し、角度
信号θの０°の時点毎のＡ／Ｄコンバータ６２ａのデジ
タル値を補正量演算回路６２ｂに取り込み（図５
（ロ））、補正量演算回路６２ｂではこのデジタル値に
対応して、該デジタル値が正の値であれば前回の位相補
正量θC を増加させ（図５（ハ））、該デジタル値が負
の値であれば前回の位相補正量θC を減少させることに
より、商用電源１の基本波が０°の時の位相（図５
（イ）参照）と、角度信号θが０°の時（図５（ロ）参
照）の位相とを同期させる。FIG. 5 is a waveform diagram for explaining the operation of the phase correction amount adjusting circuit 62. Referring to FIG.
The phase voltage of the R phase of the commercial power supply 1 via the
The digital value is converted into a digital value by the A / D converter 62a, and the digital value of the A / D converter 62a at each time of 0 ° of the angle signal θ is taken into the correction amount calculation circuit 62b (FIG. 5).
(B)) In response to this digital value, the correction amount calculation circuit 62b increases the previous phase correction amount θ C if the digital value is a positive value (FIG. 5 (c)), and Is a negative value, the previous phase correction amount θ C is decreased to obtain the phase when the fundamental wave of the commercial power supply 1 is 0 ° (FIG. 5).
(See FIG. 5A) and the phase when the angle signal θ is 0 ° (see FIG. 5B).
【００１７】図６は、この発明の第４の実施例を示すＰ
ＷＭ制御自励式整流装置７０の角度信号発生手段７１の
詳細回路構成図であり、図２に示したこの発明の第１の
実施例と同一機能を有するものには同一符号を付してい
る。図６において、角度信号発生手段７１にはフィルタ
４２、極性信号変換器４３ＰＬＬ回路４４、角度信号演
算器４５の他に、商用電源１のＲ相の相電圧の極性を判
別するシュミット回路からなる極性検出器７２ａと、こ
の判別した極性が負から正になった時点の前記角度信号
θの値を取り込み、このθの値に対応して前回の位相補
正量θC を増減させる補正量演算回路７２ｂとからなる
位相補正量調整回路７２を付加している。FIG. 6 shows a fourth embodiment of the present invention.
FIG. 3 is a detailed circuit configuration diagram of the angle signal generating means 71 of the WM control self-excited rectifier 70, in which components having the same functions as those of the first embodiment of the present invention shown in FIG. 6, the angle signal generating means 71 includes a filter 42, a polarity signal converter 43, a PLL circuit 44, an angle signal calculator 45, and a Schmitt circuit for determining the polarity of the R-phase voltage of the commercial power supply 1. A detector 72a and a correction amount calculation circuit 72b which takes in the value of the angle signal θ at the time when the determined polarity changes from negative to positive, and increases or decreases the previous phase correction amount θ C in accordance with the value of θ. And a phase correction amount adjustment circuit 72 composed of
【００１８】図７は、位相補正量調整回路７２の動作を
説明する波形図である。図７において、絶縁変換器１５
を介した商用電源１のＲ相の相電圧（図７（イ））の極
性を極性変換器７２ａにより判別し（図７（ロ））、こ
の判別した極性が負から正になった時点の前記角度信号
θの値を取り込み（図７（ハ））、このθの値に対応し
て前回の位相補正量θC を増減させる（図７（ニ）参
照）ことにより商用電源１の基本波が０°の時の位相
（図７（イ）参照）と、角度信号θが０°の時（図７
（ハ）参照）の位相とを同期させる。FIG. 7 is a waveform diagram for explaining the operation of the phase correction amount adjusting circuit 72. In FIG.
The polarity of the R-phase voltage of the commercial power supply 1 (FIG. 7 (a)) through the polarity converter 72a is determined by the polarity converter 72a (FIG. 7 (b)), and the polarity at the time when the determined polarity changes from negative to positive. wherein the value of the angle signal theta uptake (FIG. 7 (c)), the fundamental wave of the commercial power supply 1 by corresponding to the value of the theta increase or decrease the previous phase correction amount theta C (see FIG. 7 (d)) Is 0 ° (see FIG. 7A) and the phase when the angle signal θ is 0 ° (see FIG. 7A).
(See (c))).
【００１９】[0019]
【発明の効果】この発明によれば、前記角度信号発生手
段に商用電源の相電圧のノイズ成分を除去するフィルタ
を設けることにより、例えば商用電源に接続された他の
電力変換装置の電力用半導体デバイスの転流動作に基づ
いて発生する転流振動，電源陥没などの擾乱によって前
記角度信号θが乱れるのを防止できるので、ＰＷＭ制御
自励式整流装置の動作信頼性が向上する。According to the present invention, by providing a filter for removing a noise component of a phase voltage of a commercial power supply in the angle signal generating means, for example, a power semiconductor of another power converter connected to the commercial power supply Since the angle signal θ can be prevented from being disturbed by disturbance such as commutation vibration and power supply collapse generated based on the commutation operation of the device, the operation reliability of the PWM control self-excited rectifier is improved.
【図１】この発明の実施の形態を示すＰＷＭ制御自励式
整流装置のブロック構成図FIG. 1 is a block diagram of a PWM control self-excited rectifier according to an embodiment of the present invention.
【図２】この発明の第１の実施例を示す角度信号発生手
段の詳細回路構成図FIG. 2 is a detailed circuit configuration diagram of the angle signal generating means according to the first embodiment of the present invention;
【図３】この発明の第２の実施例を示す角度信号発生手
段の詳細回路構成図FIG. 3 is a detailed circuit configuration diagram of an angle signal generating means according to a second embodiment of the present invention;
【図４】この発明の第３の実施例を示す角度信号発生手
段の詳細回路構成図FIG. 4 is a detailed circuit configuration diagram of an angle signal generating means according to a third embodiment of the present invention.
【図５】図４の動作を説明する波形図FIG. 5 is a waveform chart for explaining the operation of FIG. 4;
【図６】この発明の第４の実施例を示す角度信号発生手
段の詳細回路構成図FIG. 6 is a detailed circuit configuration diagram of an angle signal generating means according to a fourth embodiment of the present invention.
【図７】図６の動作を説明する波形図FIG. 7 is a waveform chart for explaining the operation of FIG. 6;
【図８】従来例を示すＰＷＭ制御自励式整流装置のブロ
ック構成図FIG. 8 is a block diagram of a PWM control self-excited rectifier showing a conventional example.
１…商用電源、２…負荷、１０，４０，５０，６０，７
０…ＰＷＭ制御自励式整流装置、１１…自励式整流器の
主回路、１２…交流リアクトル、１３…コンデンサ、１
４…相電圧検出器、１５，２０…絶縁変換器、１６，４
１，５１，６１，７１…角度信号発生手段、１７，１８
…正弦波発生器、１９…電圧設定器、２１…電圧調節
器、２２，２３…乗算器、２４…電流検出器、２５〜２
７…電流調節器、２８…キャリア信号発生器、２９…比
較器、３０…ゲート駆動回路、４２…フィルタ、４３…
極性検出器、４４…ＰＬＬ、４５…角度信号演算器、５
２…切替回路、６２，７２…位相補正量調整回路。1: commercial power supply, 2: load, 10, 40, 50, 60, 7
0: PWM control self-excited rectifier, 11: main circuit of self-excited rectifier, 12: AC reactor, 13: capacitor, 1
4: phase voltage detector, 15, 20: insulation converter, 16, 4
1, 51, 61, 71... Angle signal generating means, 17, 18
... Sine wave generator, 19 ... Voltage setter, 21 ... Voltage regulator, 22,23 ... Multiplier, 24 ... Current detector, 25-2
7 current regulator, 28 carrier signal generator, 29 comparator, 30 gate drive circuit, 42 filter, 43
Polarity detector, 44 ... PLL, 45 ... Angle signal calculator, 5
2. Switching circuit, 62, 72: Phase correction amount adjustment circuit.
フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H02M 7/219 H02M 1/12 H02M 7/21 H02M 7/48 Continued on the front page (58) Fields surveyed (Int.Cl. 7 , DB name) H02M 7/219 H02M 1/12 H02M 7/21 H02M 7/48
Claims (4)
直流電力に変換して負荷に給電する自励式整流装置であ
って、 前記自励式整流器の出力の直流電圧を検出し、この直流
電圧が所定の値になるように電圧の調節演算をし、この
電圧の調節演算により得られた電流指令値（直流量）と
前記商用電源の位相に同期した角度信号とにより各相電
流指令値（交流量）を演算し、この各相電流指令値に追
従するように前記商用電源の各相電流を検出して電流の
調節演算をし、この各相の電流の調節演算をした出力と
キャリア信号とによりＰＷＭ制御された各相ゲート信号
を発生し、この各相ゲート信号により前記自励式整流器
の自己消弧形半導体素子を制御するＰＷＭ制御自励式整
流装置において、 前記商用電源の位相に同期した角度信号を発生する角度
信号発生手段として、前記商用電源の相電圧のノイズ成
分を除去するフィルタと、 該フィルタの出力の電圧を極性信号に変換する極性信号
変換器と、 該極性信号の立ち上がり又は立ち下がりに同期した位相
で所定の周波数の発振をするＰＬＬ回路（Ｐｈａｓｅ−
Ｌｏｃｋｅｄ Ｌｏｏｐ）と、 該ＰＬＬ回路の出力と予め設定した少なくとも前記フィ
ルタにおける位相遅れを補正する位相補正量とから前記
角度信号を演算する角度信号演算器とを備えたことを特
徴とするＰＷＭ制御自励式整流装置。1. A self-excited rectifier for converting AC power of a commercial power supply into DC power by a self-excited rectifier and supplying power to a load, wherein the DC voltage of the output of the self-excited rectifier is detected, and the DC voltage is detected. A voltage adjustment operation is performed so as to have a predetermined value, and a current command value (DC amount) obtained by the voltage adjustment operation and an angle signal synchronized with the phase of the commercial power supply are used for each phase current command value (AC Amount), the phase current of the commercial power supply is detected so as to follow the phase current command value, and the current adjustment calculation is performed. The output of the phase current adjustment calculation and the carrier signal are calculated. In the PWM control self-excited rectifier which generates a PWM-controlled gate signal of each phase and controls the self-extinguishing type semiconductor element of the self-excited rectifier by each phase gate signal, an angle synchronized with the phase of the commercial power supply Generate signal A filter for removing a noise component of a phase voltage of the commercial power supply, a polarity signal converter for converting a voltage output from the filter to a polarity signal, and a synchronous signal for rising or falling of the polarity signal. PLL circuit (Phase-
Locked Loop), and the output of the PLL circuit and at least the preset
A PWM control self-excited rectifier, comprising: an angle signal calculator for calculating the angle signal from a phase correction amount for correcting a phase delay in a filter .
置において、 前記角度信号発生手段に前記極性信号から商用電源の定
格周波数を判別し、この判別した定格周波数に基づいて
前記位相補正量の値を切り替える切替回路を付加したこ
とを特徴とするＰＷＭ制御自励式整流装置。2. The PWM control self-excited rectifier according to claim 1, wherein the angle signal generating means determines a rated frequency of a commercial power supply from the polarity signal, and the phase correction amount is determined based on the determined rated frequency. A PWM control self-excited rectifier, characterized by adding a switching circuit for switching the value of (1).
置において、 前記角度信号発生手段に前記角度信号の０°の時点の前
記商用電源の相電圧の極性を判別し、この判別した極性
が正ならば前記位相補正量を所定値増加させ、負ならば
該位相補正量を所定値減少させる位相補正量調整回路を
付加したことを特徴とするＰＷＭ制御自励式整流装置。3. The PWM control self-excited rectifier according to claim 1, wherein the angle signal generating means determines the polarity of the phase voltage of the commercial power supply at 0 ° of the angle signal, and determines the determined polarity. A self-excited PWM control device characterized by adding a phase correction amount adjusting circuit for increasing the phase correction amount by a predetermined value if the value is positive, and decreasing the phase correction amount by a predetermined value if the value is negative.
置において、 前記角度信号発生手段に前記商用電源の相電圧の極性を
判別し、この判別した極性が負から正になった時点の前
記角度信号の値により前記位相補正量を所定値増加また
は減少させる位相補正量調整回路を付加したことを特徴
とするＰＷＭ制御自励式整流装置。4. The PWM control self-excited rectifier according to claim 1, wherein the polarity of the phase voltage of the commercial power supply is determined by the angle signal generating means, and the polarity at the time when the determined polarity changes from negative to positive. A PWM control self-excited rectifier further comprising a phase correction amount adjusting circuit for increasing or decreasing the phase correction amount by a predetermined value according to the value of the angle signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01135996A JP3254999B2 (en) | 1996-01-26 | 1996-01-26 | PWM control self-excited rectifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01135996A JP3254999B2 (en) | 1996-01-26 | 1996-01-26 | PWM control self-excited rectifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09205773A JPH09205773A (en) | 1997-08-05 |
| JP3254999B2 true JP3254999B2 (en) | 2002-02-12 |
Family
ID=11775841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01135996A Expired - Lifetime JP3254999B2 (en) | 1996-01-26 | 1996-01-26 | PWM control self-excited rectifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3254999B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4277186B2 (en) * | 2003-08-25 | 2009-06-10 | 富士電機ホールディングス株式会社 | Control device for power converter |
| JP4614439B2 (en) * | 2005-03-23 | 2011-01-19 | 東芝三菱電機産業システム株式会社 | Uninterruptible power supply and input current control method thereof |
| JP5883276B2 (en) * | 2011-11-21 | 2016-03-09 | 東芝三菱電機産業システム株式会社 | Power converter |
| JP6935022B2 (en) * | 2018-09-28 | 2021-09-15 | 三菱電機株式会社 | Power converter, motor drive and air conditioner |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2531682B2 (en) * | 1987-06-09 | 1996-09-04 | 株式会社東芝 | Controller for current source PWM converter |
| JPH0710174B2 (en) * | 1989-05-29 | 1995-02-01 | 三菱電機株式会社 | PWM converter device |
| JPH03212162A (en) * | 1990-01-16 | 1991-09-17 | Fuji Electric Co Ltd | Control circuit for pulse width modulation control rectifier |
| JP3161484B2 (en) * | 1992-08-17 | 2001-04-25 | 松下電器産業株式会社 | Synchronous signal phase difference measurement circuit |
| JP2924601B2 (en) * | 1993-09-06 | 1999-07-26 | サンケン電気株式会社 | Power converter |
| JP3232885B2 (en) * | 1994-07-05 | 2001-11-26 | 株式会社日立製作所 | Power conversion device and control method |
-
1996
- 1996-01-26 JP JP01135996A patent/JP3254999B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09205773A (en) | 1997-08-05 |
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