JPH02273100A - Rotary cvcf power source - Google Patents
Rotary cvcf power sourceInfo
- Publication number
- JPH02273100A JPH02273100A JP1092987A JP9298789A JPH02273100A JP H02273100 A JPH02273100 A JP H02273100A JP 1092987 A JP1092987 A JP 1092987A JP 9298789 A JP9298789 A JP 9298789A JP H02273100 A JPH02273100 A JP H02273100A
- Authority
- JP
- Japan
- Prior art keywords
- synchronous generator
- voltage
- inverter
- constant
- rotary
- 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
- 230000001360 synchronised effect Effects 0.000 claims abstract description 35
- 230000006698 induction Effects 0.000 claims abstract description 14
- 239000004065 semiconductor Substances 0.000 abstract description 7
- 230000015556 catabolic process Effects 0.000 abstract 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000003068 static effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Control Of Eletrric Generators (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、定電圧定周波（ＣＶＣＦ）電源装置、特に回
転形ＣＶＣＦ電源装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to constant voltage constant frequency (CVCF) power supplies, and in particular to rotary CVCF power supplies.
定電圧定周波の電源を必要とする例えばコンピュータの
ような重要負荷に対するＣＶＣＦ電源装置には、半導体
素子を用いた静止形ＣＶＣＦ電源装置が使用されている
。最近の工場では、コンピュータ以外にも、定電圧定周
波の電源を必要とするロボット、ＦＡ機器などが増えて
きており、これら重要負荷に一括して定電圧定周波電源
を供給することが要望されている。A static CVCF power supply using a semiconductor element is used as a CVCF power supply for an important load such as a computer, which requires a constant voltage and constant frequency power supply. In addition to computers, modern factories are increasingly equipped with robots, FA equipment, etc. that require constant-voltage, constant-frequency power supplies, and there is a need to supply constant-voltage, constant-frequency power to these important loads all at once. ing.
電力会社からの商用電源は、電圧１周波数が変動するの
で、定電圧定周波電源として直接用いることができない
。したがって上記の要望に応えるＣＶＣＦ電源装置が必
要となるが、工場内に急峻大電流を発生するような機器
、例えば誘導電動機がある場合には、静止形ＣＶＣＦ電
源装置では半導体素子が容易に破壊されてしまうという
問題がある。さらに静止形ＣＶＣＦ電源装置は、半導体
素子を用いるので高価であるという経済上の問題がある
。Commercial power from an electric power company cannot be used directly as a constant voltage, constant frequency power source because the voltage and frequency vary. Therefore, a CVCF power supply device that meets the above requirements is required, but if there is equipment in the factory that generates a steep large current, such as an induction motor, a static CVCF power supply device can easily destroy semiconductor elements. There is a problem with this. Furthermore, the static CVCF power supply device uses a semiconductor element, so there is an economical problem in that it is expensive.
さらに、工場のような大電力需要家に設置するＣＶＣＦ
電源装置は、商用系統が停電した場合にも、安定して定
電圧定周波の電源を供給できる能力が要求される。Furthermore, CVCFs installed at large power consumers such as factories
Power supplies are required to have the ability to stably supply constant voltage, constant frequency power even in the event of a power outage in the commercial grid.
本発明の目的は、上記のような技術的課題および経済的
課題を解決した回転形ＣＶＣＦ電源装置を提供すること
にある。An object of the present invention is to provide a rotary CVCF power supply device that solves the technical and economical problems described above.
〔課題を解決するための手段］
本発明の回転形ＣＶＣＦ電源装置は、
商用系統の交流を直流に変換する整流器と、この整流器
の直流を交流に変換するインバータと、
このインバータの交流出力を受けて回転駆動される誘導
電動機と、
この誘導電動機により回転駆動されて交流電圧を発生す
る同期発電機と、
この同期発電機の発生する交流電圧の周波数を検出し、
この周波数が一定となるように前記インバータのゲート
制御を行う自動周波数調整器と、前記同期発電機の発生
する交流電圧を検出し、この交流電圧が一定となるよう
に前記同期発電機の界磁電流を調整する自動電圧調整器
とを備えている。[Means for Solving the Problems] A rotary CVCF power supply device of the present invention includes a rectifier that converts AC in a commercial system into DC, an inverter that converts the DC of the rectifier into AC, and an AC output of the inverter. an induction motor that is rotationally driven by the induction motor, a synchronous generator that is rotationally driven by the induction motor and generates an alternating current voltage, and detects the frequency of the alternating current voltage that the synchronous generator generates;
An automatic frequency regulator performs gate control of the inverter so that this frequency is constant; and an automatic frequency regulator that detects the AC voltage generated by the synchronous generator and controls the field of the synchronous generator so that the AC voltage is constant. Equipped with an automatic voltage regulator to adjust the current.
本発明によれば、さらに、前記整流器の出力側に、蓄電
池および直流発電装置を接続することができる。According to the present invention, a storage battery and a DC power generation device can further be connected to the output side of the rectifier.
第１図は、回転形ＣＶＣＦ電源装置の一実施例を示す。 FIG. 1 shows an embodiment of a rotary CVCF power supply.
この回転形ＣＶＣＦ電源装置は、交直変換器である整流
器ｌと、直交変換器であるインバータ２と、インバータ
２からの３相交流電圧により駆動される誘導電動機（ｒ
Ｍ）３と、この誘導電動機３に機械的にカップリングさ
れた同期発電機４と、この同期発電機４の発生電圧の位
相を電圧変成器６を介して検出して、インバータ２のト
リガをフィードバック制御し、同期発電機の発生電圧の
周波数を一定にする自動周波数調整器５と、同期発電機
４の発生電圧を電圧変成器６を介して検出し、同期発電
機４の界磁７への界磁電流ｉ。This rotary CVCF power supply device consists of a rectifier l which is an AC/DC converter, an inverter 2 which is an orthogonal converter, and an induction motor (r) driven by a three-phase AC voltage from the inverter 2.
M) 3, a synchronous generator 4 mechanically coupled to the induction motor 3, and the phase of the voltage generated by the synchronous generator 4 detected via the voltage transformer 6 to trigger the inverter 2. An automatic frequency regulator 5 performs feedback control to keep the frequency of the voltage generated by the synchronous generator constant, and the voltage generated by the synchronous generator 4 is detected via a voltage transformer 6 and sent to the field 7 of the synchronous generator 4. field current i.
を制御して、同期発電機４の発生電圧を一定にする自動
電圧調整器（ＡＶＲ）８とから構成されている。and an automatic voltage regulator (AVR) 8 that controls the voltage generated by the synchronous generator 4 and makes the voltage generated by the synchronous generator 4 constant.
このような構成の回転形ＣＶＣＦ電源装置は、整流器１
が遮断器９を介して商用系統に接続されるように設置さ
れ、同期発電機４には定電圧定周波の電源を必要とする
コンピュータ、ロボット。A rotary CVCF power supply device with such a configuration has a rectifier 1.
is installed so that it is connected to the commercial grid via a circuit breaker 9, and the synchronous generator 4 requires a constant voltage, constant frequency power source for computers and robots.
ＦＡ機器などの重要負荷１０が接続される。An important load 10 such as FA equipment is connected.
商用系統からの３相交流は、整流器１で直流に変換され
、インバータ２で再び３相交流に変換される。この３相
交流により誘導電動機３が駆動され、同期発電ｍ４を回
転し、３相交流電圧を発生する。同期発電機４の周波数
および発生電圧は、自動周波数調整器５および自動電圧
調整器８により検出され、フィードバック制省卸するこ
とにより、同期発電機４は定電圧定周波の３相交流電圧
を発生する。Three-phase alternating current from a commercial system is converted to direct current by a rectifier 1, and then converted back to three-phase alternating current by an inverter 2. The induction motor 3 is driven by this three-phase AC, rotates the synchronous power generator m4, and generates a three-phase AC voltage. The frequency and generated voltage of the synchronous generator 4 are detected by an automatic frequency regulator 5 and an automatic voltage regulator 8, and by controlling feedback, the synchronous generator 4 generates a constant voltage, constant frequency, three-phase AC voltage. do.
本実施例の回転形ＣＶＣＦ電源装置は、同期発電機４の
皮相（ｋＶＡ）容量を大きく選定することが重要である
。例えばインバータ２の容ｆｆ１３０ｖ、誘導電動機３
の容量３７ｋＨに対して、同期発電機４の皮相容量を５
５〜７５ｋＶＡというように大きく選定する。これによ
り、急峻負荷変動による急峻大電流が流れても、同期発
電ａ４の有効出力はインバータ２の有効出力である３０
に−に制限されるから、同期発電機はその定格電流の２
０〜３０倍といった大電流に充分耐えることができる。In the rotary CVCF power supply device of this embodiment, it is important to select a large apparent (kVA) capacity of the synchronous generator 4. For example, the capacity of inverter 2 is 130v, and the induction motor 3 is
For the capacity of 37kHz, the apparent capacity of synchronous generator 4 is 5
Select a large value such as 5 to 75 kVA. As a result, even if a steep large current flows due to sudden load fluctuations, the effective output of synchronous power generation a4 is 30%, which is the effective output of inverter 2.
Since the synchronous generator is limited to −2 of its rated current,
It can sufficiently withstand a large current of 0 to 30 times.
このため、急峻負荷変動６；よりインバータ２の半導体
素子が破壊されることはない。Therefore, the semiconductor elements of the inverter 2 are not destroyed due to the sudden load fluctuation 6.
次に、商用系統の停電時にも定電圧定周波の電源を安定
して供給できる回転形ＣＶＣＦ電源装置の例を、第２図
に示し説明する。この回転形ｃＶＣＦ電源装置は、第１
図の回転形ＣＶＣＦ電源装置の整流器ｌの出力側に、さ
らに、蓄電池１１と、直流発生装置１２とを設置したも
のである。したがって第１図と同一の要素には同じ参照
番号を付して示している。Next, an example of a rotary CVCF power supply device that can stably supply constant voltage, constant frequency power even during a power outage in the commercial system is shown in FIG. 2 and will be described. This rotary cVCF power supply device has a first
A storage battery 11 and a DC generator 12 are further installed on the output side of the rectifier 1 of the rotary CVCF power supply device shown in the figure. Accordingly, elements that are the same as in FIG. 1 are designated with the same reference numerals.
直流発電装置１２は、同期発電機１３と、この同期発電
機の交流出力を整流する整流器１４と、同期発電機１３
を駆動するディーゼルエンジン、ガスエンジンなどの機
械的原動機１５とから構成されている。The DC power generator 12 includes a synchronous generator 13, a rectifier 14 that rectifies the AC output of the synchronous generator, and a synchronous generator 13.
It is composed of a mechanical prime mover 15 such as a diesel engine or a gas engine that drives the engine.
このような構成の回転形ＣＶＣＦ電源装置では、商用系
統が停電すると、直ちに原動機１５がスタートされる。In the rotary CVCF power supply device having such a configuration, the prime mover 15 is started immediately when a power outage occurs in the commercial system.
立上がるまでには１０〜２０秒かかるが、この間は蓄電
器１１から直流電力がインバータ２に供給されるので、
回転形ＣＶＣＦ電源装置の同期発電機４は瞬断すること
なく定電圧定周波の交流電力を発生し続ける。It takes 10 to 20 seconds to start up, but during this time DC power is supplied to the inverter 2 from the capacitor 11.
The synchronous generator 4 of the rotary CVCF power supply device continues to generate constant voltage, constant frequency AC power without momentary interruption.
以上の各実施例では、誘導電動機３と同期発電機４は機
械的にカップリングしているが、１ステータ２０−夕と
いったようなビルデインゲタイブのものを用いてもよい
。In each of the above embodiments, the induction motor 3 and the synchronous generator 4 are mechanically coupled, but a built-in motor such as one stator 20-unit may also be used.
本発明によれば、定電圧定周波の電源を必要とする機器
が多数存在するような工場に設置するのに適した安価な
回転形ＣＶＣＦ電源装置が得られる。例えば同一容量の
ものならば、静止形ＣＶＣＦ電源装置に比べて、１／３
の価格で提供することが可能となる。According to the present invention, it is possible to obtain an inexpensive rotary CVCF power supply device suitable for installation in a factory where there are many devices that require a constant voltage, constant frequency power source. For example, if the capacity is the same, it will be 1/3 that of a static CVCF power supply.
It becomes possible to provide the product at a price of .
また、急峻大電流に対して充分な耐量を備えることがで
きるので、半導体素子が容易に破壊されることがなく、
安定した電力供給が可能である。In addition, it has sufficient resistance to sudden large currents, so semiconductor elements are not easily destroyed.
Stable power supply is possible.
さらに、無瞬断タイプの回転形ＣＶＣＦ電源装置にあっ
ては、商用系統の停電に際しても、瞬断することなく安
定した電力供給が可能である。Furthermore, the non-interruption type rotary CVCF power supply device can provide stable power supply without instantaneous interruption even in the event of a power outage in the commercial system.
第１図は、本発明の回転形ＣＶＣＦ電源装置の一例を示
す図、
第２図は、無瞬断タイプの本発明の回転形Ｃ■ＣＦ電源
装置の一例を示す図である。
１．１４・・・整流器
２・・・・・インバータ
３・・・・・誘導電動機
４．１３・・・同期発電機
５・・・・・自動周波数調整器
６・・・・・電圧変成器
７ ・
８ ・
９ ・
１０・
１１・
１２・
界磁
自動電圧調整器
遮断器
負荷
蓄電池
直流発電装置
商用句況FIG. 1 is a diagram showing an example of a rotary type CVCF power supply device of the present invention, and FIG. 2 is a diagram showing an example of a rotary type C■CF power supply device of the present invention of a non-interruption type. 1.14... Rectifier 2... Inverter 3... Induction motor 4.13... Synchronous generator 5... Automatic frequency regulator 6... Voltage transformer 7 ・ 8 ・ 9 ・ 10 ・ 11 ・ 12・ Field automatic voltage regulator circuit breaker load storage battery DC generator commercial situation
Claims (2)
整流器の直流を交流に変換するインバータと、 このインバータの交流出力を受けて回転駆動される誘導
電動機と、 この誘導電動機により回転駆動されて交流電圧を発生す
る同期発電機と、 この同期発電機の発生する交流電圧の周波数を検出し、
この周波数が一定となるように前記インバータのゲート
制御を行う自動周波数調整器と、前記同期発電機の発生
する交流電圧を検出し、この交流電圧が一定となるよう
に前記同期発電機の界磁電流を調整する自動電圧調整器
とを備える回転形ＣＶＣＦ電源装置。(1) A rectifier that converts alternating current in a commercial system to direct current, an inverter that converts the direct current of this rectifier to alternating current, an induction motor that is rotationally driven by receiving the alternating current output of this inverter, and an induction motor that is rotationally driven by this induction motor. detects a synchronous generator that generates an alternating current voltage and the frequency of the alternating current voltage that this synchronous generator generates,
An automatic frequency regulator performs gate control of the inverter so that this frequency is constant; and an automatic frequency regulator that detects the AC voltage generated by the synchronous generator and controls the field of the synchronous generator so that the AC voltage is constant. A rotary CVCF power supply device equipped with an automatic voltage regulator that adjusts the current.
、 前記整流器の出力側に、蓄電池および直流発電装置を接
続した回転形ＣＶＣＦ電源装置。(2) The rotary CVCF power supply device according to claim 1, wherein a storage battery and a DC power generator are connected to the output side of the rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1092987A JPH02273100A (en) | 1989-04-14 | 1989-04-14 | Rotary cvcf power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1092987A JPH02273100A (en) | 1989-04-14 | 1989-04-14 | Rotary cvcf power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02273100A true JPH02273100A (en) | 1990-11-07 |
Family
ID=14069726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1092987A Pending JPH02273100A (en) | 1989-04-14 | 1989-04-14 | Rotary cvcf power source |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02273100A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012005303A (en) * | 2010-06-18 | 2012-01-05 | Dengensha Mfg Co Ltd | Dc power supply unit |
| JP5142172B1 (en) * | 2011-06-30 | 2013-02-13 | 株式会社Ｑｕａｎ Ｊａｐａｎ | Power converter |
-
1989
- 1989-04-14 JP JP1092987A patent/JPH02273100A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012005303A (en) * | 2010-06-18 | 2012-01-05 | Dengensha Mfg Co Ltd | Dc power supply unit |
| JP5142172B1 (en) * | 2011-06-30 | 2013-02-13 | 株式会社Ｑｕａｎ Ｊａｐａｎ | Power converter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5426579A (en) | Method and apparatus for stabilizing AC power supply systems connected to power factor correcting loads | |
| US4962354A (en) | Superconductive voltage stabilizer | |
| EP2068423B1 (en) | An AC power generation system | |
| JP3133386B2 (en) | Control device for current source converter for supplying to AC bus | |
| US6118676A (en) | Dynamic voltage sag correction | |
| US5729120A (en) | Dynamic voltage regulation stabilization for AC power supply systems | |
| KR950035037A (en) | Control circuit for inductive load | |
| JP2004532595A (en) | How to operate a wind turbine | |
| EP3116119B1 (en) | Variable frequency generator with improved generator excitation | |
| US5031086A (en) | Hybrid power system | |
| KR100423214B1 (en) | An asynchronous traction system supplied from a single-phase main power supply unit integrally incorporating such a device | |
| US7414331B2 (en) | Power converter system and method | |
| US6232751B1 (en) | Excitation control system | |
| KR101827042B1 (en) | Apparatus for controlling inverter | |
| Grzesiak et al. | Power quality of the Hygen autonomous load-adaptive adjustable-speed generating system | |
| US5486751A (en) | Electronic trimming voltage regulator | |
| JPH02273100A (en) | Rotary cvcf power source | |
| JP2004208345A (en) | Three-phase unbalanced voltage restraining apparatus | |
| KR20220146941A (en) | Power transforming apparatus and air conditioner including the same | |
| JP4614311B2 (en) | Power generation system and power supply method for power generation system | |
| US6239583B1 (en) | Regulation system for a permanent magnet generator | |
| JPS62221880A (en) | Portable engine power generator | |
| JPH0652998B2 (en) | Method and device for controlling control voltage of three-phase inverter for AC motor power supply | |
| JPH0623159Y2 (en) | Abnormality detection device for three-phase power supply | |
| JP2000032666A (en) | Running method of reactive power compensating apparatus |