JPS61224869A - Converter - Google Patents
ConverterInfo
- Publication number
- JPS61224869A JPS61224869A JP60066038A JP6603885A JPS61224869A JP S61224869 A JPS61224869 A JP S61224869A JP 60066038 A JP60066038 A JP 60066038A JP 6603885 A JP6603885 A JP 6603885A JP S61224869 A JPS61224869 A JP S61224869A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- source inverter
- phase
- voltage source
- inverter
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 abstract description 6
- 230000003111 delayed effect Effects 0.000 abstract description 5
- 230000001934 delay Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- H02M7/162—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 in a bridge configuration
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Rectifiers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は交流を直流に変換するコンバータ装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a converter device that converts alternating current to direct current.
第４図ニ従来の電圧形インバータを用いたコンバータ装
置を示す電気回路図であり、図において、１は交流電源
、２に交流電源１と電圧形インバータ３との間に接続さ
れたリアクトル、４は電圧形インバータ３において整流
され定電圧を脈動の少ない電圧に平滑化するコンデンサ
、６框直流負荷、６は交流電源１の電圧を検出する交流
電圧センサ、７は電圧形インバータ３の直流側電圧を検
出する直流電圧センサ、８はこれらの各センサ６．７の
出力にもとづいて電圧形インバータ３の動作を制御する
制御装置である。FIG. 4D is an electric circuit diagram showing a converter device using a conventional voltage source inverter. In the figure, 1 is an AC power source, 2 is a reactor connected between the AC power source 1 and the voltage source inverter 3, and 4 is a capacitor that is rectified in the voltage source inverter 3 and smoothes the constant voltage to a voltage with less pulsation; 6 is a DC load; 6 is an AC voltage sensor that detects the voltage of the AC power source 1; 7 is the DC side voltage of the voltage source inverter 3. A DC voltage sensor 8 for detecting the voltage is a control device that controls the operation of the voltage source inverter 3 based on the output of each of these sensors 6 and 7.
次に動作について説明する。Next, the operation will be explained.
今、電圧形インバータ３の交流＠電圧をＥＸｉｉ源１の
電圧をＶ１電源１から′重圧形インバータ３へ流れる交
流電流を１、リアクトル２の（Ｉｆ Ｌ トｆなる。Now, the AC voltage of the voltage source inverter 3 is V1, the voltage of the EXii source 1 is 1, and the AC current flowing from the power source 1 to the heavy voltage inverter 3 is 1, and the reactor 2 (If L tf).
もし、電源電圧Ｖに対する電圧形インバータの交流側電
圧Ｅの位相ψを遅らせるとベクトル図は＃！５図の様Ｖ
Ｃすり、入力の交ｆｉｎ！１ｌｔｆｉ Ｉ ｆｌｉｉＥ
源’を圧※して対して進みとなり、エネルギーが交流電
源１から流れ込んで直流側（負荷）へエネルギーを供給
することになる。これに対し位相ψを進ませると、エネ
ルギーは直流側から交流電源１側に逆に戻されることＶ
ｃ々る。If the phase ψ of the AC side voltage E of the voltage source inverter is delayed with respect to the power supply voltage V, the vector diagram becomes #! As shown in Figure 5
C-slip, input interaction fin! 1ltfi I fliiE
The pressure on the source ' is increased, and energy flows from the AC power supply 1 to supply energy to the DC side (load). On the other hand, if the phase ψ is advanced, the energy is returned from the DC side to the AC power supply 1 side V
c.ru.
したがって、直流側でエネルギーを必要さするときは位
相ψを遅らせ、逆に回生を行うときは位相ψを進ませれ
ばよい。つまり、直流電圧を直流電圧センサ７によって
常時検出し、この検出する直流電圧が設定直流電圧に対
して低いときには位相ψを遅らせ、逆に高いときには位
相ψを進めれば、直流電圧を一定に維持する制御が可能
となる。Therefore, when energy is required on the DC side, the phase ψ may be delayed, and conversely, when regeneration is performed, the phase ψ may be advanced. In other words, if the DC voltage is constantly detected by the DC voltage sensor 7 and the detected DC voltage is lower than the set DC voltage, the phase ψ is delayed, and when it is higher than the set DC voltage, the phase ψ is advanced, thereby maintaining the DC voltage constant. It becomes possible to control the
なお、この場合の位相φに交流電圧センサ６で検出した
電圧位相と電圧形インバータ３の電圧波形のパターンと
の間の位相差と々す、その電圧波形のパターンは固定で
ある。In this case, the phase φ is equal to the phase difference between the voltage phase detected by the AC voltage sensor 6 and the voltage waveform pattern of the voltage source inverter 3, and the voltage waveform pattern is fixed.
従来の重圧形インバータを用いたコンバータ装置は以上
のように構成されているので、電圧波形パターンが一定
で、直流負荷６へのエネルギーの供給およびエネルギー
の回生のための制御要素に上記位相ψのみとなり、した
がって、広範囲に直流電圧を制御しようとする場合には
リアクトル２に印加する電圧が高くなり、入力力率が非
常に悪くなるという問題点があった。Since a converter device using a conventional heavy-voltage inverter is configured as described above, the voltage waveform pattern is constant, and only the above-mentioned phase ψ is used as a control element for supplying energy to the DC load 6 and regenerating energy. Therefore, when attempting to control the DC voltage over a wide range, the voltage applied to the reactor 2 becomes high, resulting in a problem that the input power factor becomes extremely poor.
この発明は上記のような問題点を解消するためになされ
友もので、リアクトルに加わる電圧を高くすること彦＜
、直流電圧の制御を広範囲に行うことができる、入力力
率の高いコンバータ装置を得ることを目的とする。This invention was made in order to solve the above problems, and it is possible to increase the voltage applied to the reactor.
The object of the present invention is to obtain a converter device that can control DC voltage over a wide range and has a high input power factor.
この発明にかかる高力率インバータは、直流側電圧を検
出し、この検出した直流側電圧にもとづき電圧形インバ
ータの電圧波形を設定パターンになるよりに制御すると
ともに、電源の交流電圧および電圧形インバータの交流
側電流の位相を検出し、この検出位相により電圧形イン
バータの制御角を設定の入力力率になるように制御する
ようにしたものである。The high power factor inverter according to the present invention detects the DC side voltage, controls the voltage waveform of the voltage source inverter according to the set pattern based on the detected DC side voltage, and controls the voltage waveform of the voltage source inverter according to the AC voltage of the power source and the voltage source inverter. The phase of the AC side current is detected, and the control angle of the voltage source inverter is controlled based on the detected phase so that the input power factor is set.
この発明におけるコンバータ装置でに１電圧形インパ〜
りの波形パターンを直流側電圧で変化させることによっ
て電圧形インバータと交流電源との間の゛電流の流ｎを
制御し、これにより直流側電圧を広範囲に制御する。In the converter device according to the present invention, a single voltage type impa-
The current flow n between the voltage source inverter and the alternating current power supply is controlled by changing the waveform pattern of the DC voltage, thereby controlling the DC voltage over a wide range.
以下、この発明の一実施例を図について説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第１図において、１１はスター接続しｆｃ３相交流電源
、１２はリアクトル、１３は電圧形インバータ、１４に
直流側電圧に含まれるリップルを減少させるコンデンサ
、１６に直流負荷、１ｅは交流電源１１の電圧位相を検
出する交流電圧センナ、１７は直流側電圧を検出する直
流電圧センナ、１８は電圧形インバータ１３の交流側電
流を検出する交流電流センサ、１９はこれらの各センサ
１６゜１７．１５１の出力にもとづいて電圧形インバー
タの動作を制御する制御装置でろる。In FIG. 1, 11 is a star-connected fc three-phase AC power supply, 12 is a reactor, 13 is a voltage source inverter, 14 is a capacitor for reducing the ripple included in the DC side voltage, 16 is a DC load, and 1e is the AC power supply 11. 17 is an AC voltage sensor that detects the voltage phase; 17 is a DC voltage sensor that detects the DC side voltage; 18 is an AC current sensor that detects the AC side current of the voltage source inverter 13; A control device that controls the operation of a voltage source inverter based on its output.
次に動作について説明する。Next, the operation will be explained.
第１図における交流側回路は説明の都合上、帛２図に１
相分の等価回路として示しである。まず電源電圧をやｔ
、電圧形インバータの交流側電圧を６１入力端子なｉｌ
リアクトルの値をＬとすると電圧式は※＠ｍ Ｅｓ
＋ ｊωＩＪとなり、ｔｔとＩが同相すなわち入力力率
が１になるとすると、ベクトル図に第３図の様になる。The AC side circuit in Figure 1 is shown in Figure 2 for convenience of explanation.
It is shown as an equivalent circuit of the phase components. First, check the power supply voltage.
, the AC side voltage of the voltage source inverter is input to the 61 input terminal.
If the reactor value is L, the voltage formula is *@m Es
+ jωIJ, and assuming that tt and I are in phase, that is, the input power factor is 1, the vector diagram will be as shown in FIG.
ま次、第１図において、コンデンサ１４の電圧、すなわ
ち直流電圧をＥｄとすると、Ｅｔとは次の関係式が成立
する。Next, in FIG. 1, if the voltage of the capacitor 14, that is, the DC voltage is Ed, the following relational expression holds true with Et.
Ｅ％ＩＩＩＩＫＥｄ
ただし、Ｋは電圧形インバータの波形パターンで決定さ
れる係数でろる。したがって、上式はＥｄ ＝ １／Ｋ
＠Ｅｓ
となり、Ｅｔが大きくなればＫを太き（、Ｅ、が小さく
なればＫを小さくすることで、Ｅｄの大きさを一定にで
きる。従って、たとえば交流側電圧と交流側電流を比較
し電圧形インバータの制御角を制御することで、入力力
率が１の制御をすれば、Ｅｓは第３図のベクトル図で決
まる値となり、かつ、電圧インバータの電圧波形パター
ンＫを変化させれば、直流側電圧Ｆ、ｄが制御できる。E%IIIIKEd However, K is a coefficient determined by the waveform pattern of the voltage source inverter. Therefore, the above formula is Ed = 1/K
@Es, and if Et becomes large, K becomes thicker (and if E becomes smaller, K is made smaller, the magnitude of Ed can be kept constant. Therefore, for example, when comparing AC side voltage and AC side current, If the input power factor is controlled to 1 by controlling the control angle of the voltage source inverter, Es will be the value determined by the vector diagram in Figure 3, and if the voltage waveform pattern K of the voltage inverter is changed, , DC side voltages F and d can be controlled.
従って入力力率１で、しかも直流側電圧の制御範囲の広
い高力率コンバータを実現できる。Therefore, it is possible to realize a high power factor converter with an input power factor of 1 and a wide control range of the DC side voltage.
従って、制御回路１９は交流電圧センナ１６で検出した
交流電源１１の電圧Ｖ鴬および交流電流センサ１８で検
出した電圧形インバータ１３の交流側電流Ｉを入力とし
て、この交流側電流Ｉが遅れのｔ流であるときに、上記
位相φを遅らせ、逆に進みの［流であるときは、その位
相ψを進ませるように作用する。この結果、入力力率ｌ
の制御が可能となる。一方、直流側電圧を直流電圧セ／
す１７により検出し、これが直流設定電圧に対し低い時
には、電圧形インバータ１３の波形パターンの係数Ｋが
小さくなるように、逆に高い時にａＫが大きくなるよう
にそれぞれ電圧形インバータの電圧波形パターンを制御
丁れば、直流側電圧の制御範囲を大きくとることができ
る。Therefore, the control circuit 19 inputs the voltage V of the AC power source 11 detected by the AC voltage sensor 16 and the AC side current I of the voltage source inverter 13 detected by the AC current sensor 18, and this AC side current I is When the current is flowing, the phase φ is delayed; conversely, when the current is advancing, the phase φ is advanced. As a result, the input power factor l
control becomes possible. On the other hand, the DC side voltage is
The voltage waveform pattern of the voltage source inverter 13 is adjusted so that when the DC set voltage is lower than the DC setting voltage, the coefficient K of the waveform pattern of the voltage source inverter 13 is small, and when it is high, the coefficient aK is large. If the control is correct, the control range of the DC side voltage can be widened.
ここで、電圧形インバータの波形パターンとして正弦波
パターンを選べば、交流側電流が正弦波で、直流側電圧
に含まれるリップルの小さいコンバータが構成できる。Here, if a sine wave pattern is selected as the waveform pattern of the voltage source inverter, a converter can be constructed in which the AC side current is a sine wave and the ripple contained in the DC side voltage is small.
なお、上記実施例は交流電源が３相の場合について説明
したが、単相の場合でも同様の動作をする。し比がって
、電圧形インバータの交流側に入相検出回路を設け、３
相のりちｌ相が欠相した場合にも単相による同様の動作
が可能となる。Although the above embodiment has been described for the case where the AC power source is three-phase, the same operation is performed even when the AC power source is single-phase. In contrast, a phase input detection circuit is provided on the AC side of the voltage source inverter, and 3
Even when one phase of the phase is open, the same operation with a single phase is possible.
また、上記実施例のコンデンサ１４としてケミコンのほ
か通常のコンデンサを使うことができ、また、電圧形イ
ンバータに多重インバータを使用することもできる。Further, as the capacitor 14 in the above embodiment, a normal capacitor can be used in addition to the chemical condenser, and a multiplex inverter can also be used as the voltage source inverter.
以上のように、この発明によれば、直流側電圧を電圧形
インバータの波形パターンで制御するように構成し友の
で、コンバータの入力力率と直流側電圧を広範囲に制御
することができる効果がある。As described above, according to the present invention, since the DC side voltage is configured to be controlled by the waveform pattern of the voltage source inverter, the input power factor and DC side voltage of the converter can be controlled over a wide range. be.
第１図はこの発明の一実施例によるコンバータ装置の電
気回路図、第２図は第１図の電気回路の１相分の等価回
路、第３図に同じくこの等価回路の回路動作を説明する
ベクトル図、第４図は従来のコンバータ装置の電気回路
図、第５図に同じくこの電気回路の動作を説明するベク
トル図である。
１１は交流電源、１２ｔｒｉｌＪアクドル、１３は電圧
形インバータ、１６は直流負荷、１６框交流電圧センサ
、１７框直流電圧センナ、１８は交流電流センサ、１９
は制御装置。
特許出願人 三菱電機株式会社
代理人 弁理士 １）澤 博 昭
（外２名）
第４図Fig. 1 is an electric circuit diagram of a converter device according to an embodiment of the present invention, Fig. 2 is an equivalent circuit for one phase of the electric circuit of Fig. 1, and Fig. 3 similarly explains the circuit operation of this equivalent circuit. 4 is an electric circuit diagram of a conventional converter device, and FIG. 5 is a vector diagram illustrating the operation of this electric circuit. 11 is an AC power supply, 12 is a trilJ accelerator, 13 is a voltage source inverter, 16 is a DC load, 16 is an AC voltage sensor, 17 is a DC voltage sensor, 18 is an AC current sensor, 19
is a control device. Patent applicant Mitsubishi Electric Co., Ltd. agent Patent attorney 1) Hiroshi Sawa (2 others) Figure 4
Claims (5)
ンバータと、この電圧形インバータの交流側に接続され
たリアクトルと、直流負荷が高い電圧を必要とするとき
、上記電圧形インバータの電圧波形を直流側電圧に対し
て交流側電圧が低くなるパターンに選び、逆に直流負荷
が低い電圧を必要とするとき、上記電圧形インバータの
電圧波形を直流側電圧に対して交流側電圧が高くなるパ
ターンに選ぶとともに、交流側電圧と交流側電流にもと
づいて上記電圧形インバータの制御角を制御する制御装
置とを備えたコンバータ装置。(1) A voltage source inverter connected between an AC power supply and a DC load, a reactor connected to the AC side of the voltage source inverter, and a reactor connected to the AC side of the voltage source inverter when the DC load requires high voltage. If the voltage waveform is selected in a pattern where the AC side voltage is lower than the DC side voltage, and conversely when the DC load requires a low voltage, the voltage waveform of the above voltage source inverter is set so that the AC side voltage is lower than the DC side voltage. A converter device comprising a control device that selects a pattern that increases the voltage and controls a control angle of the voltage source inverter based on an AC side voltage and an AC side current.
タの交流側電流を入力として、これらの間の位相を求め
、この位相にもとづいて上記電圧形インバータの制御角
を設定の人力力率になるように制御することを特徴とす
る特許請求の範囲第１項に記載のコンバータ装置。(2) The control device inputs the voltage of the AC power source and the AC side current of the voltage source inverter, determines the phase between these, and based on this phase, the control angle of the voltage source inverter is set to the human power factor. The converter device according to claim 1, wherein the converter device is controlled as follows.
電圧波形のパターンを変化させることにより、その直流
側電圧を制御することを特徴とする特許請求の範囲第１
項に記載のコンバータ装置。(3) The control device controls the DC side voltage of the voltage source inverter by changing the voltage waveform pattern of the voltage source inverter according to the DC side voltage.
Converter device as described in Section.
ターンであることを特徴とする特許請求の範囲第１項に
記載のコンバータ装置。(4) The converter device according to claim 1, wherein the voltage waveform pattern of the voltage source inverter is a sine wave pattern.
形インバータの交流側に欠相検出回路を設け、３相のう
ち１相が欠相した場合に、単相で動作することを可能に
した特許請求の範囲第１項に記載のコンバータ装置。(5) An open phase detection circuit is installed on the AC side of the voltage source inverter connected to a three-phase AC power source via a reactor, making it possible to operate on a single phase when one of the three phases is open. A converter device according to claim 1.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60066038A JPS61224869A (en) | 1985-03-29 | 1985-03-29 | Converter |
| PCT/JP1986/000147 WO1986005929A1 (en) | 1985-03-29 | 1986-03-27 | Converter |
| DE19863690155 DE3690155T1 (en) | 1985-03-29 | 1986-03-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60066038A JPS61224869A (en) | 1985-03-29 | 1985-03-29 | Converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61224869A true JPS61224869A (en) | 1986-10-06 |
Family
ID=13304311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60066038A Pending JPS61224869A (en) | 1985-03-29 | 1985-03-29 | Converter |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS61224869A (en) |
| DE (1) | DE3690155T1 (en) |
| WO (1) | WO1986005929A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904919A (en) * | 2014-03-18 | 2014-07-02 | 东南大学 | Remote control |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2134598C2 (en) * | 1971-07-07 | 1984-02-23 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Method for controlling a converter with controllable converter valves and extinguishing devices assigned to them |
| CH600674A5 (en) * | 1975-06-11 | 1978-06-30 | Bbc Brown Boveri & Cie | |
| JPS5961475A (en) * | 1982-09-30 | 1984-04-07 | Toshiba Corp | Power converter |
-
1985
- 1985-03-29 JP JP60066038A patent/JPS61224869A/en active Pending
-
1986
- 1986-03-27 WO PCT/JP1986/000147 patent/WO1986005929A1/en active Application Filing
- 1986-03-27 DE DE19863690155 patent/DE3690155T1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO1986005929A1 (en) | 1986-10-09 |
| DE3690155T1 (en) | 1987-04-23 |
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