JP3252688B2 - PWM control self-excited rectifier - Google Patents
PWM control self-excited rectifierInfo
- Publication number
- JP3252688B2 JP3252688B2 JP00694396A JP694396A JP3252688B2 JP 3252688 B2 JP3252688 B2 JP 3252688B2 JP 00694396 A JP00694396 A JP 00694396A JP 694396 A JP694396 A JP 694396A JP 3252688 B2 JP3252688 B2 JP 3252688B2
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- value
- phase
- counter
- self
- commercial power
- Prior art date
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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６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６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. 6 is a block diagram showing a conventional example of this type of PWM control self-excited rectifier. In FIG. 6, 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
The main circuit 1 of a self-excited rectifier in which a self-extinguishing type semiconductor element such as T and a diode are connected in anti-parallel and connected in bridge
1, an AC reactor 12 of a self-excited rectifier, a capacitor 13 for smoothing the output of the self-excited rectifier, a phase voltage detector 14 for detecting a phase voltage of the commercial power supply 1, and insulatingly converting an R-phase phase voltage of the commercial power supply 1. An insulation converter 15; an angle signal generator 16 for generating an angle signal (θ, θ = 0 ° to 360 °) synchronized with the phase of the R-phase voltage of the commercial power supply 1 via the insulation converter 15; A sine wave generator 17 for generating a sine wave based on the signal (θ), and a sine wave generator 1 for generating a sine wave based on a value (θ 1 ) obtained by adding 120 ° to the angle signal
8. A voltage controller 2 that performs a voltage adjustment operation based on a deviation between a voltage setting value of a voltage setting device 19 and a voltage detection value obtained by detecting a DC voltage between both ends of a capacitor 13 through an insulating converter 20.
1. An R-phase current set value (i R) obtained by multiplying the output of the voltage regulator 21 and the output of the sine wave generator 17 by the multiplier 22
* ), The output of the voltage regulator 21 and the output of the sine wave generator 18 are multiplied by the multiplier 23 in the T-phase current set value (i
T * ) and the S-phase current set value (i S * ) is obtained.
R *, i S *, i T * and the current detector 24 with the resulting R-phase current detection value (i R), S-phase current detection value (i S), T-phase current set value of the (i T) Each deviation is determined by the current controller 2
The adjustment operation is performed at 5, 26, 27, and the current adjusters 25, 2
6 and 27 are subjected to PWM control by a carrier signal generator 28 and a comparator 29, and the output of the comparator 29 is output by a gate drive circuit 30 to the main circuit 1 of the self-excited rectifier.
1 is a configuration in which a gate signal is applied to each of the self-extinguishing type semiconductor elements.
【０００４】図６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アナログ
位相ロックループ（以下、アナログＰＬＬと称する）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。In the conventional PWM control self-excited rectifier 10 shown in FIG. 6, an angle signal generating means 16 includes an analog phase locked loop (hereinafter referred to as an analog PLL and a PLL) comprising a well-known phase comparator, a voltage controlled oscillator and the like. , And an angle signal (θ, θ = 0 ° to 360 °) synchronized with the phase of the R-phase voltage of the commercial power supply 1 is generated.
【０００５】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。[0005] The entire PWM control self-excited rectifier 10 uses a well-known technique, and a detailed description of the operation will be omitted.
【０００６】[0006]
【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
て発生する電源陥没などの擾乱によって、前記アナログ
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発生した。According to the above-described conventional angle signal generating means, for example, a power supply collapse caused by a commutation operation of a power semiconductor device of another power converter connected to a commercial power supply. Due to the disturbance, the operation of the phase comparator of the analog PLL is disturbed, and as a result, the angle signal is disturbed.
【０００７】また、アナログＰＬＬでは、アナログ回路
のドリフト補償，オフセット補償など調整箇所も多く該
回路が複雑，高価になるという問題もあった。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。In addition, the analog PLL has a problem that the number of adjustment points such as drift compensation and offset compensation of the analog circuit is large and the circuit becomes complicated and expensive. An object of the present invention is to provide a PWM control self-excited rectifier which solves the above problems.
【０００８】[0008]
【課題を解決するための手段】上記の課題を解決するた
めに、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、予め設定した周
波数のクロック信号を計測するカウンタと、前記商用電
源の相電圧より相電圧の極性信号を検出する相電圧極性
検出器と、該極性信号の立ち上がり毎または立ち下がり
毎の前記カウンタの計測値を記録し、且つこれらの計測
値から前記商用電源の１周期を演算して記録する電源周
期演算器と、前記商用電源の１周期の記録値に基づく基
準周期データの１／２の値と前記カウンタの計測値の記
録値との偏差を比例・積分演算する周波数調節器と、該
周波数調節器の出力値と前記カウンタの計測値が一致し
たときに該カウンタの計測値をその都度クリアするデジ
タル比較器と、前記周波数調節器の積分項の出力値と前
記基準周期データとの加算値を求め、前記カウンタの計
測値を該加算値でその都度除算演算をし、この除算演算
の商と予め設定した角度データとの積を前記角度信号と
する角度信号演算器とを備え、以下の構成とする。 Means for Solving the Problems To solve the above problems,
A self-excited rectifier that converts AC power of commercial power into DC power by a self-excited rectifier and supplies power to a load,
A DC voltage of the output of the self-excited rectifier is detected, a voltage adjustment operation is performed so that the DC voltage becomes a predetermined value, and a current command value (DC amount) obtained by the voltage adjustment operation is compared with the commercial voltage. Each phase current command value (AC amount) is calculated based on the angle signal synchronized with the phase of the power supply, and each phase current of the commercial power supply is detected and the current adjustment calculation is performed so as to follow the phase current command value. Then, a PWM signal is generated for each phase gate signal based on the output obtained by performing the operation of adjusting the current of each phase and the carrier signal, and the self-extinguishing type semiconductor element of the self-excited rectifier is controlled by each phase gate signal. In the PWM control self-excited rectifier, an angle signal generating means for generating an angle signal synchronized with the phase of the commercial power supply, a counter for measuring a clock signal of a preset frequency, A phase voltage polarity detector for detecting a voltage polarity signal, and recording the measured values of the counter for each rising or falling of the polarity signal, and calculating one cycle of the commercial power supply from these measured values. A power cycle calculator for recording; and a frequency controller for performing a proportional / integral calculation of a deviation between a half value of the reference cycle data based on a recorded value of one cycle of the commercial power supply and a recorded value of the measured value of the counter. A digital comparator for clearing the measured value of the counter each time the output value of the frequency adjuster and the measured value of the counter match, an output value of the integral term of the frequency adjuster and the reference period data, And an angle signal calculator for calculating a product of a quotient of the division operation and predetermined angle data as the angle signal. ,Less than Configuration to.
【０００９】この第１の発明では、前記周波数調節器の
出力値を予め前記カウンタの許容最大値にプリセット
し、このときの前記電源周期演算器で演算される前記商
用電源の１周期の記録値に基づいて前記基準周期データ
を決定し、この値に該基準周期データを固定する。この
第２の発明では、前記周波数調節器の比例ゲインを予め
許容最大値にプリセットし、前記基準周期データと該周
波数調節器の出力値との差が所定の値以下になったとき
に、該周波数調節器の比例ゲインを所定の値にセットす
る。In the first invention, the output value of the frequency adjuster is preset in advance to an allowable maximum value of the counter, and the recorded value of one cycle of the commercial power supply calculated by the power cycle calculator at this time. Is determined on the basis of the reference period data, and the reference period data is fixed to this value. In the second invention, the proportional gain of the frequency adjuster is preset to an allowable maximum value, and when the difference between the reference cycle data and the output value of the frequency adjuster becomes equal to or less than a predetermined value, The proportional gain of the frequency adjuster is set to a predetermined value.
【００１０】この第３の発明では、前記基準周期データ
と前記電源周期演算器で演算される前記商用電源の１周
期の記録値との差に基づいた値に、前記周波数調節器の
積分項の出力値をプリセットする。この第４の発明では
前記第１乃至第３の発明のいずれかにおいて、前記ＰＷ
Ｍ制御自励式整流装置が起動時より所定の時間が経過し
た後、前記カウンタの計測値又は前記角度信号が所定の
上，下限値から逸脱したときには、前記周波数調節器の
入力である前記基準周期データの１／２の値と前記電源
周期演算器の前記カウンタの計測値の記録値との偏差
を、該逸脱している期間だけ強制的に零に保持する。In the third aspect of the present invention, a value based on a difference between the reference cycle data and a recorded value of one cycle of the commercial power supply calculated by the power cycle calculator is used to calculate an integral term of the frequency controller. Preset output values. According to a fourth aspect of the present invention, in any one of the first to third aspects, the PW
When a measured value of the counter or the angle signal deviates from predetermined upper and lower limits after a predetermined time has elapsed after the M-control self-excited rectifier has started, the reference period, which is an input of the frequency adjuster, The deviation between the half value of the data and the recorded value of the measurement value of the counter of the power cycle calculator is forcibly held to zero only during the deviating period.
【００１１】この第１の発明によれば、前記角度信号発
生手段として、所謂、デジタル位相ロックループ（以
下、デジタルＰＬＬと称する）を採用することにより、
従来のアナログＰＬＬが備えていたオフセット調整，ド
リフト調整などの調整回路を不要とし、調整箇所を最小
にすることができる。また、第２の発明によれば演算さ
れた前記商用電源の１周期の値により該商用電源の定格
周波数が５０Ｈｚか６０Ｈｚかを自動的に判別できる。According to the first aspect, a so-called digital phase locked loop (hereinafter, referred to as a digital PLL) is employed as the angle signal generating means.
An adjustment circuit such as an offset adjustment and a drift adjustment provided in the conventional analog PLL is not required, and the number of adjustment points can be minimized. Further, according to the second aspect, it is possible to automatically determine whether the rated frequency of the commercial power supply is 50 Hz or 60 Hz based on the calculated value of one cycle of the commercial power supply.
【００１２】また、第３，第４の発明によれば、前記第
１の発明の作用に加えて、比例・積分演算を行う周波数
調節器の起動時の整定時間が短縮される。さらに第５の
発明によれば、前記第１〜第４の発明の作用に加えて、
先述の商用電源の電源陥没などの擾乱に対して前記角度
信号が乱れるのを防止できる。According to the third and fourth aspects of the invention, in addition to the operation of the first aspect of the invention, the settling time at the time of activation of the frequency adjuster for performing the proportional / integral operation is reduced. Further, according to the fifth invention, in addition to the functions of the first to fourth inventions,
It is possible to prevent the angle signal from being disturbed by the disturbance such as the above-mentioned power collapse of the commercial power supply.
【００１３】[0013]
【発明の実施の形態】図１は、この発明の実施例を示す
ＰＷＭ制御自励式整流装置のブロック構成図であり、図
６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には角度信号発生手段５
０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. That is, in FIG.
PWM signal self-excited rectifier 40 includes angle signal generating means 5
0 is provided.
【００１４】図２は、図１に示した角度信号発生手段５
０の詳細回路構成図であり、角度信号発生手段５０は、
クロック信号を発生する発振器５１と、該クロック信号
を計測するカウンタ５２と、絶縁変換器１５の出力から
商用電源１のＲ相の相電圧の極性信号を検出する相電圧
極性検出器５３と、該極性信号の立ち下がり毎のカウン
タ５２の計測値を記録し、且つこれらの計測値から商用
電源１の１周期を演算して記録する電源周期演算器５４
と、電源周期演算器５４で記録された商用電源１の１周
期に基づいた基準周期データの１／２の値と電源周期演
算器５４で記録されたカウンタ５２の計測値との偏差を
加算演算器５５で求め、この偏差の比例（Ｐ）・積分
（Ｉ）演算する周波数調節器５６と、周波数調節器５６
の出力値とカウンタ５２の計測値が一致したときにカウ
ンタ５２の計測値をその都度クリアするデジタル比較器
５７と、周波数調節器５６の積分項の出力値と前記基準
周期データとの加算値を加算演算器５８で求め、カウン
タ５２の計測値と加算演算器５８の出力値と予め設定し
た角度データとから前記角度信号θを演算する角度信号
演算器５９とを備える。FIG. 2 shows the angle signal generating means 5 shown in FIG.
0 is a detailed circuit configuration diagram of FIG.
An oscillator 51 for generating a clock signal, a counter 52 for measuring the clock signal, a phase voltage polarity detector 53 for detecting a polarity signal of a phase voltage of the R phase of the commercial power supply 1 from an output of the insulation converter 15, A power cycle calculator 54 that records the measured values of the counter 52 for each fall of the polarity signal, and calculates and records one cycle of the commercial power supply 1 from these measured values.
And a deviation between a half value of the reference cycle data based on one cycle of the commercial power supply 1 recorded by the power cycle calculator 54 and a measurement value of the counter 52 recorded by the power cycle calculator 54. A frequency adjuster 56 for calculating a proportional (P) / integral (I) of the deviation, and a frequency adjuster 56
And a digital comparator 57 for clearing the measured value of the counter 52 each time the measured value of the counter 52 matches the output value of the counter 52, and the sum of the output value of the integral term of the frequency adjuster 56 and the reference cycle data. An angle signal calculator 59 is provided for calculating the angle signal θ from the measured value of the counter 52, the output value of the addition calculator 58, and preset angle data obtained by the addition calculator 58.
【００１５】図２に示した角度信号演算器５９におい
て、加算演算器５８の出力値をＤとし、カウンタ５２の
計測値をＣとし、３６０°に相当する角度データをΘと
すると、前記角度信号θは式（１）で表される。 θ＝Θ・Ｃ／Ｄ …（１） 図３はこの発明の角度信号発生手段５０の動作を説明す
る波形図である。In the angle signal calculator 59 shown in FIG. 2, if the output value of the addition calculator 58 is D, the measured value of the counter 52 is C, and the angle data corresponding to 360 ° is Θ, the angle signal θ is represented by equation (1). θ = Θ · C / D (1) FIG. 3 is a waveform diagram for explaining the operation of the angle signal generating means 50 of the present invention.
【００１６】図３において、Ｒ相相電圧（図３（イ））
に基づく相電圧極性検出器５３の出力（図３（ロ））の
立ち下がり時毎のカウンタ５２の計測値Ｃn-4 〜Ｃn
（図３（ハ））を電源周期演算器５４に取り込み、この
計測値Ｃn-4 〜Ｃn と基準周期データの半分の値との偏
差を加算演算器５５でその都度求め、この偏差を周波数
調節器５６で比例（Ｐ）・積分（Ｉ）演算をすることに
より周波数調節器５６の出力（図３（ハ）参照）は、第
３の発明に対応した初期値、すなわち、商用電源１の１
周期に基づいた基準周期データと電源周期演算器５４で
演算される商用電源１の１周期の記録値との差に基づい
た値に周波数調節器５６の積分項の出力値をプリセット
し、このときの周波数調節器５６の出力値から徐々に減
少し、時刻Ｔ0 （図３（ニ））で整定し、このときの周
波数調節器５６の出力値は基準周期データとほぼ等しく
なり、カウンタ５２の計測値も周波数調節器５６の出力
値に達すると、デジタル比較器５７により零にリセット
される（図３（ハ））。図３（ニ）に示す時刻Ｔ0 以降
は、周波数調節器５６の出力値は基準周期データとほぼ
等しくなるので、第２の発明に対応した値、すなわち、
周波数調節器５６の許容最大の比例（Ｐ）ゲイン値から
通常動作の比例（Ｐ）ゲイン値にセットする。In FIG. 3, the R-phase voltage (FIG. 3 (A))
The output of the phase voltage polarity detector 53 based on the measured value C n-4 (FIG. 3 (b)) fall upon each of the counter 52 -C n
(FIG. 3 (c)) is taken into the power supply cycle calculator 54, and the difference between the measured values C n−4 to C n and half the value of the reference cycle data is calculated each time by the addition calculator 55, and this difference is calculated. By performing the proportional (P) / integral (I) operation in the frequency adjuster 56, the output of the frequency adjuster 56 (see FIG.
Initial value corresponding to the third invention, that is, 1
The output value of the integral term of the frequency controller 56 is preset to a value based on the difference between the reference cycle data based on the cycle and the recorded value of one cycle of the commercial power supply 1 calculated by the power cycle calculator 54. Gradually decreases from the output value of the frequency adjuster 56, and settles at time T 0 (FIG. 3 (d)). At this time, the output value of the frequency adjuster 56 becomes substantially equal to the reference cycle data. When the measured value also reaches the output value of the frequency adjuster 56, it is reset to zero by the digital comparator 57 (FIG. 3 (c)). After the time T 0 shown in FIG. 3D, the output value of the frequency adjuster 56 becomes substantially equal to the reference cycle data, and therefore, the value corresponding to the second invention, that is,
From the maximum allowable proportional (P) gain value of the frequency adjuster 56, the proportional (P) gain value for normal operation is set.
【００１７】図４は、第１の発明に対応する角度信号発
生手段５０の電源周期演算器５４の動作を説明する波形
図である。図４において、周波数調節器５６の出力値を
予めカウンタ５２の許容最大値にプリセットし、このと
きのＲ相相電圧（図４（イ））に基づく相電圧極性検出
器５３の出力（図４（ロ））の立ち下がり時毎のカウン
タ５２の計測値Ｃ0 〜Ｃ4（図４（ハ））を電源周期演
算器５４に取り込み、この計測値Ｃ0 〜Ｃ4 から演算し
て求めた商用電源１の１周期のデータの平均値を基準周
期データとするようにしている。商用電源１の定格周波
数が５０Ｈｚか６０Ｈｚかは、該基準周期データから判
別できる。FIG. 4 is a waveform diagram for explaining the operation of the power cycle calculator 54 of the angle signal generator 50 according to the first embodiment. 4, the output value of the frequency adjuster 56 is preset to an allowable maximum value of the counter 52 in advance, and the output of the phase voltage polarity detector 53 based on the R-phase voltage (FIG. 4A) at this time (FIG. The measured values C 0 to C 4 (FIG. 4C) of the counter 52 at each falling time of (b)) are taken into the power cycle calculator 54 and are calculated and calculated from the measured values C 0 to C 4 . The average value of the data of one cycle of the commercial power supply 1 is set as the reference cycle data. Whether the rated frequency of the commercial power supply 1 is 50 Hz or 60 Hz can be determined from the reference cycle data.
【００１８】図５は、第４の発明に対応する角度信号発
生手段５０の動作を説明する波形図である。図５におい
て、ＰＷＭ制御自励式整流装置４０が起動時より所定の
時間が経過した後（前記図３（ハ）に示した時刻Ｔ0 以
降）、前記角度信号θすなわちカンタ５２の相電圧極性
検出器５３の出力（図５（ロ））の立ち下がり時の計測
値が１８０°±δ（図５（ハ）参照）から逸脱したとき
には、同期許可フラグ（図５（ニ）を立てないようにし
て、電源周期演算器５４の動作を前回の値のまま保持
し、加算演算器５５の出力を該逸脱している期間だけ強
制的に零に保持し、周波数調節器５６の動作も保持され
るようにしている。FIG. 5 is a waveform diagram for explaining the operation of the angle signal generating means 50 according to the fourth invention. In FIG. 5, after a predetermined time has elapsed since the start of the PWM control self-excited rectifier 40 (after time T0 shown in FIG. 3C), the phase signal polarity detector of the angle signal .theta. When the measured value at the time of the fall of the output 53 (FIG. 5B) deviates from 180 ° ± δ (see FIG. 5C), the synchronization permission flag (FIG. 5D) should not be set. Then, the operation of the power supply cycle calculator 54 is held at the previous value, the output of the addition calculator 55 is forcibly held at zero only during the deviating period, and the operation of the frequency adjuster 56 is also held. I have to.
【００１９】上述の動作により、商用電源１に接続され
る他の電力変換器の電力用半導体デバイスの転流動作に
基づいて発生する電源陥没などの擾乱によって、相電圧
極性検出器５３の出力が図５（ロ）に示すように乱れ、
その結果、前記角度信号θが乱れるのを防止できる。By the above operation, the output of the phase voltage polarity detector 53 is changed by disturbance such as power supply collapse generated based on the commutation operation of the power semiconductor device of another power converter connected to the commercial power supply 1. As shown in FIG.
As a result, disturbance of the angle signal θ can be prevented.
【００２０】[0020]
【発明の効果】この発明によれば、前記角度信号発生手
段として、所謂、デジタル位相ロックループ（以下、デ
ジタルＰＬＬと称する）を採用することにより調整箇所
を最小にすることができ、比例・積分演算を行う周波数
調節器の起動時の整定時間が短縮され、先述の商用電源
の電源陥没などの擾乱に対して前記角度信号が乱れるの
を防止できるので動作信頼性の高いＰＷＭ制御自励式整
流装置が提供できる。According to the present invention, a so-called digital phase locked loop (hereinafter, referred to as a digital PLL) is employed as the angle signal generating means, so that the number of adjustment points can be minimized. The settling time at the time of starting the frequency adjuster for performing the operation is shortened, and the angle signal is prevented from being disturbed by the disturbance such as the above-mentioned collapse of the commercial power supply, so that the PWM control self-excited rectifier having high operation reliability is provided. Can be provided.
【００２１】また、この発明によれば、マイクロコンピ
ュータなどにより該マイクロコンピュータが有している
カウンタ機能，演算機能を利用したデジタル処理が容易
であり、ＰＷＭ制御自励式整流装置の部品点数の削減，
コストダウンをもたらす。Further, according to the present invention, digital processing using the counter function and the arithmetic function of the microcomputer can be easily performed by the microcomputer, and the number of parts of the PWM control self-excited rectifier can be reduced.
Brings down costs.
【図１】この発明の実施例を示す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 showing an embodiment of the present invention.
【図２】図１に示した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 shown in FIG.
【図３】図２の動作を説明する波形図FIG. 3 is a waveform chart for explaining the operation of FIG. 2;
【図４】図２の動作を説明する波形図FIG. 4 is a waveform chart for explaining the operation of FIG. 2;
【図５】図２の動作を説明する波形図FIG. 5 is a waveform chart for explaining the operation of FIG. 2;
【図６】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. 6 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，…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、１４…相電圧検出
器、１５，２０…絶縁変換器、１６，５０…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、２５〜２７…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、５１
…発振器、５２…カウンタ、５３…相電圧極性検出器、
５４…電源周期演算器、５５，５８…加算演算器、５６
…周波数調節器、５７…デジタル比較器、５９…角度信
号演算器。DESCRIPTION OF SYMBOLS 1 ... Commercial power supply, 2 ... Load, 10,40 ... PWM control self-excited rectifier, 11 ... Main circuit of self-excited rectifier, 12 ... AC reactor, 13 ... Capacitor, 14 ... Phase voltage detector, 15,20 ... Insulation converter, 16, 50 Angle signal generating means, 17, 18 Sine wave generator, 19 Voltage setting device, 21 Voltage regulator, 22, 23 Multiplier, 24 Current detector, 25-27 ... current regulator, 28 ... carrier signal generator, 29 ... comparator, 30 ... gate drive circuit, 51
... Oscillator, 52 ... Counter, 53 ... Phase voltage polarity detector,
54: power cycle calculator, 55, 58: addition calculator, 56
... frequency adjuster, 57 ... digital comparator, 59 ... angle signal calculator.
フロントページの続き (56)参考文献 特開 平３−3665（ＪＰ，Ａ) 特開 平３−265468（ＪＰ，Ａ) 特開 平５−333077（ＪＰ，Ａ) 特開 平７−288982（ＪＰ，Ａ) 特開 平３−212162（ＪＰ，Ａ) 特開 平７−213067（ＪＰ，Ａ) 特開 平５−134773（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H02M 7/219 H02M 7/48 Continuation of front page (56) References JP-A-3-3665 (JP, A) JP-A-3-265468 (JP, A) JP-A-5-333077 (JP, A) JP-A-7-288982 (JP) JP-A-3-212162 (JP, A) JP-A-7-213067 (JP, A) JP-A-5-134773 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB Name) H02M 7/219 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、 予め設定した周波数のクロック信号を計測するカウンタ
と、 前記商用電源の相電圧より相電圧の極性信号を検出する
相電圧極性検出器と、 該極性信号の立ち上がり毎または立ち下がり毎の前記カ
ウンタの計測値を記録し、且つこれらの計測値から前記
商用電源の１周期を演算して記録する電源周期演算器
と、 前記商用電源の１周期の記録値に基づく基準周期データ
の１／２の値と前記カウンタの計測値の記録値との偏差
を比例・積分演算する周波数調節器と、 該周波数調節器の出力値と前記カウンタの計測値が一致
したときに該カウンタの計測値をその都度クリアするデ
ジタル比較器と、 前記周波数調節器の積分項の出力値と前記基準周期デー
タとの加算値を求め、前記カウンタの計測値を該加算値
でその都度除算演算をし、この除算演算の商と予め設定
した角度データとの積を前記角度信号とする角度信号演
算器とを備え、前記周波数調節器の出力値を予め前記カウンタの許容最
大値にプリセットし、このときの前記電源周期演算器で
演算される前記商用電源の１周期の記録値に基づいて前
記基準周期データを決定し、この値に該基準周期データ
を固定する 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 counter for measuring a clock signal of a preset frequency; a phase voltage polarity detector for detecting a polarity signal of a phase voltage from the phase voltage of the commercial power supply; and a rising edge or rising edge of the polarity signal. A power cycle calculator for recording the measured value of the counter for each fall, and calculating and recording one cycle of the commercial power from these measured values; and reference cycle data based on the recorded value of one cycle of the commercial power. A frequency adjuster for performing a proportional / integral calculation of a deviation between a value of 1/2 of the counter and a recorded value of the measured value of the counter, and a counter of the counter when the output value of the frequency adjuster matches the measured value of the counter. A digital comparator for clearing the measured value each time; and obtaining an added value of the output value of the integral term of the frequency adjuster and the reference period data, and measuring the measured value of the counter with the added value. An angle signal calculator which performs a degree division operation, and sets a product of the quotient of the division operation and predetermined angle data as the angle signal, and outputs an output value of the frequency adjuster in advance to an allowable maximum value of the counter.
Preset to a large value, and the power cycle calculator at this time
Based on the calculated value of one cycle of the commercial power supply calculated
The reference cycle data is determined, and this value is
A PWM control self-excited rectifier, characterized in that:
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、 予め設定した周波数のクロック信号を計測するカウンタ
と、 前記商用電源の相電圧より相電圧の極性信号を検出する
相電圧極性検出器と、 該極性信号の立ち上がり毎または立ち下がり毎の前記カ
ウンタの計測値を記録し、且つこれらの計測値から前記
商用電源の１周期を演算して記録する電源周期演算器
と、 前記商用電源の１周期の記録値に基づく基準周期データ
の１／２の値と前記カウンタの計測値の記録値との偏差
を比例・積分演算する周波数調節器と、 該周波数調節器の出力値と前記カウンタの計測値が一致
したときに該カウンタの計測値をその都度クリアするデ
ジタル比較器と、 前記周波数調節器の積分項の出力値と前記基準周期デー
タとの加算値を求め、前記カウンタの計測値を該加算値
でその都度除算演算をし、この除算演算の商と予め設定
した角度データとの積を前記角度信号とする角度信号演
算器とを備え、 前記周波数調節器の比例ゲインを予め許容最大値にプリ
セットし、前記基準周期データと該周波数調節器の出力
値との差が所定の値以下になったときに、該周波数調節
器の比例ゲインを所定の値にセットすることを特徴とす
るＰＷＭ制御自励式整流装置。 2. The AC power of a commercial power supply is supplied by a self-excited rectifier.
A self-excited rectifier that converts to DC power and feeds the load.
Thus, the DC voltage of the output of the self-excited rectifier is detected,
The voltage adjustment calculation is performed so that the voltage becomes a predetermined value.
The current command value (DC amount) obtained by the voltage adjustment calculation and
Each phase power is supplied by an angle signal synchronized with the phase of the commercial power supply.
Calculate the current command value (AC amount) and add it to each phase current command value.
To detect the current of each phase of the commercial power
After performing the adjustment calculation, the output of the current adjustment calculation for each phase is
Gate signal of each phase PWM-controlled by carrier signal
And the self-excited rectifier is
-Controlled self-excited regulator for controlling self-extinguishing semiconductor devices
The flow device generates an angle signal synchronized with the phase of the commercial power supply.
Counter for measuring a clock signal of a preset frequency as signal generation means
And detecting a polarity signal of the phase voltage from the phase voltage of the commercial power supply.
A phase voltage polarity detector, and the detector detects the polarity signal at each rising or falling edge of the polarity signal.
Counter measurements and from these measurements
Power cycle calculator that calculates and records one cycle of commercial power
And reference cycle data based on a recorded value of one cycle of the commercial power supply
Deviation between the value of 1/2 of the measured value and the recorded value of the measured value of the counter
A frequency adjuster that performs a proportional / integral calculation on the output signal , and the output value of the frequency adjuster matches the measured value of the counter.
When the counter value is cleared each time
A digital comparator, an output value of an integral term of the frequency controller, and the reference period data.
And the measured value of the counter is calculated as the added value.
Perform the division operation each time, and set the quotient of this division operation and the
An angle signal operation in which the product of the obtained angle data and the angle data
And a calculator, wherein the proportional gain of the frequency adjuster is preset to an allowable maximum value in advance.
Set the reference period data and the output of the frequency controller
When the difference from the value falls below a predetermined value, the frequency adjustment is performed.
Set the proportional gain of the detector to a predetermined value.
PWM controlled self-excited rectifier.
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、 予め設定した周波数のクロック信号を計測するカウンタ
と、 前記商用電源の相電圧より相電圧の極性信号を検出する
相電圧極性検出器と、 該極性信号の立ち上がり毎または立ち下がり毎の前記カ
ウンタの計測値を記録し、且つこれらの計測値から前記
商用電源の１周期を演算して記録する電源周期演算器
と、 前記商用電源の１周期の記録値に基づく基準周期データ
の１／２の値と前記カウンタの計測値の記録値との偏差
を比例・積分演算する周波数調節器と、 該周波数調節器の出力値と前記カウンタの計測値が一致
したときに該カウンタの計測値をその都度クリアするデ
ジタル比較器と、 前記周波数調節器の積分項の出力値と前記基準周期デー
タとの加算値を求め、前記カウンタの計測値を該加算値
でその都度除算演算をし、この除算演算の商と予め設定
した角度データとの積を前記角度信号とする角度信号演
算器とを備え、 前記基準周期データと前記電源周期演算器で演算される
前記商用電源の１周期の記録値との差に基づいた値に、
前記周波数調節器の積分項の出力値をプリセットするこ
とを特徴とするＰＷＭ制御自励式整流装置。 3. The AC power of a commercial power supply is supplied by a self-excited rectifier.
A self-excited rectifier that converts to DC power and feeds the load.
Thus, the DC voltage of the output of the self-excited rectifier is detected,
The voltage adjustment calculation is performed so that the voltage becomes a predetermined value.
The current command value (DC amount) obtained by the voltage adjustment calculation and
Each phase power is supplied by an angle signal synchronized with the phase of the commercial power supply.
Calculate the current command value (AC amount) and add it to each phase current command value.
To detect the current of each phase of the commercial power
After performing the adjustment calculation, the output of the current adjustment calculation for each phase is
Gate signal of each phase PWM-controlled by carrier signal
And the self-excited rectifier is
-Controlled self-excited regulator for controlling self-extinguishing semiconductor devices
The flow device generates an angle signal synchronized with the phase of the commercial power supply.
Counter for measuring a clock signal of a preset frequency as signal generation means
And detecting a polarity signal of the phase voltage from the phase voltage of the commercial power supply.
A phase voltage polarity detector, and the detector detects the polarity signal at each rising or falling edge of the polarity signal.
Counter measurements and from these measurements
Power cycle calculator that calculates and records one cycle of commercial power
And reference cycle data based on a recorded value of one cycle of the commercial power supply
Deviation between the value of 1/2 of the measured value and the recorded value of the measured value of the counter
A frequency adjuster that performs a proportional / integral calculation on the output signal , and the output value of the frequency adjuster matches the measured value of the counter.
When the counter value is cleared each time
A digital comparator, an output value of an integral term of the frequency controller, and the reference period data.
And the measured value of the counter is calculated as the added value.
Perform the division operation each time, and set the quotient of this division operation and the
An angle signal operation in which the product of the obtained angle data and the angle data is used as the angle signal.
And a calculator for calculating the reference cycle data and the power cycle calculator.
To a value based on the difference from the recorded value of one cycle of the commercial power supply,
The output value of the integral term of the frequency controller is preset.
And a PWM control self-excited rectifier.
ＰＷＭ制御自励式整流装置において、 前記ＰＷＭ制御自励式整流装置が起動時より所定の時間
が経過した後、前記カウンタの計測値又は前記角度信号
が所定の上，下限値から逸脱したときには、前記周波数
調節器の入力である前記基準周期データの１／２の値と
前記電源周期演算器の前記カウンタの計測値の記録値と
の偏差を、該逸脱している期間だけ強制的に零に保持す
ることを特徴とするＰＷＭ制御自励式整流装置。4. The PWM control self-commutated rectifier device according to any one of claims 1 to 3, after the PWM control self-commutated rectifier has elapsed a predetermined time from startup, the measurement value of the counter Or, when the angle signal deviates from predetermined upper and lower limits, a value of の of the reference cycle data, which is an input of the frequency adjuster, and a recorded value of a measurement value of the counter of the power cycle calculator. Characterized in that the deviation of the self-excited rectifier of PWM control is forcibly maintained at zero only during the period of deviation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00694396A JP3252688B2 (en) | 1996-01-19 | 1996-01-19 | PWM control self-excited rectifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00694396A JP3252688B2 (en) | 1996-01-19 | 1996-01-19 | PWM control self-excited rectifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09201059A JPH09201059A (en) | 1997-07-31 |
| JP3252688B2 true JP3252688B2 (en) | 2002-02-04 |
Family
ID=11652334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP00694396A Expired - Fee Related JP3252688B2 (en) | 1996-01-19 | 1996-01-19 | PWM control self-excited rectifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3252688B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6260331B2 (en) * | 2014-02-18 | 2018-01-17 | オムロン株式会社 | Control device, power conversion device, power supply system, and program |
| CN111386646B (en) | 2018-10-31 | 2022-04-29 | 华为技术有限公司 | Wireless charging receiving device, method, terminal and system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JP2795956B2 (en) * | 1990-03-15 | 1998-09-10 | 株式会社東芝 | Phase control circuit |
| JP3129791B2 (en) * | 1991-11-11 | 2001-01-31 | 株式会社東芝 | Induction generator control |
| JPH081452B2 (en) * | 1992-02-07 | 1996-01-10 | 山菱電機株式会社 | Switching type simulated load device |
| JP3296065B2 (en) * | 1994-01-24 | 2002-06-24 | 富士電機株式会社 | Control circuit of PWM converter |
| JP3002625B2 (en) * | 1994-04-14 | 2000-01-24 | 三菱電機株式会社 | Three-phase power converter |
-
1996
- 1996-01-19 JP JP00694396A patent/JP3252688B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09201059A (en) | 1997-07-31 |
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