JPS60125127A - Power source switching control system - Google Patents
Power source switching control systemInfo
- Publication number
- JPS60125127A JPS60125127A JP58229762A JP22976283A JPS60125127A JP S60125127 A JPS60125127 A JP S60125127A JP 58229762 A JP58229762 A JP 58229762A JP 22976283 A JP22976283 A JP 22976283A JP S60125127 A JPS60125127 A JP S60125127A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- power supply
- commercial
- output
- 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.)
- Granted
Links
Landscapes
- Stand-By Power Supply Arrangements (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Inverter Devices (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の属する技術分野〕
この発明は、負荷電流量に応じて出力電圧を調節するイ
ンバータ装置からなる電源と商用電源との間での電源切
替制御方式に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical field to which the invention pertains] The present invention relates to a power supply switching control system between a commercial power supply and a power supply comprising an inverter device that adjusts the output voltage according to the amount of load current.
この種の切替制御方式として、従来は、インバータの出
力電圧と商用電圧との差電圧を検出し、その差電圧によ
り、インバータの出力電圧を商用電圧に合わせてから短
時間ラップさせて切り替える方式とか、インバータの出
力電圧設定値と商用電圧検出値との差電圧により、イン
バータの出方電圧を商用電圧に合わせてから切り替える
方式とかが知られている。Conventionally, this type of switching control method detects the voltage difference between the inverter's output voltage and the commercial voltage, uses the difference voltage to adjust the inverter's output voltage to the commercial voltage, and then wraps it for a short time before switching. A known method is to adjust the output voltage of the inverter to the commercial voltage based on the difference voltage between the inverter's output voltage setting value and the commercial voltage detection value, and then switch the voltage.
ところがこのような方式では、ラップした瞬間から２つ
の電源の検出電圧が同一となるため、ラップ中の差電圧
検出示不可能となり長時間ラップさせることが出来ない
とか、負荷電流量に応じて出力電圧が変化していて、イ
ンバータの出力電圧設定値が実際の出刃電圧と等価では
ないときは、単純には該設定値をもって代用することが
出来ず、したがって、両電源の電圧値を一致させるのが
困難であるという欠点がある。However, with this type of method, the detected voltages of the two power supplies become the same from the moment of wrapping, so it is impossible to detect the difference voltage during wrapping, making it impossible to wrap for a long time, or changing the output depending on the amount of load current. If the voltage is changing and the inverter's output voltage setting is not equivalent to the actual cutting voltage, the setting cannot simply be used as a substitute, and therefore it is necessary to match the voltage values of both power supplies. The disadvantage is that it is difficult to
この発明は、負荷（出力）電流量に応じてインバータと
商用電源との差電圧検出を変化させ、ラップ中であって
も差電圧の検出を可能にし、インバータの出力電圧を商
用電圧と一致させ長時間ラップさせながら切り替えるこ
とを可能にする電源切替制御方式を提供することを目的
とする。This invention changes the differential voltage detection between the inverter and the commercial power supply according to the amount of load (output) current, makes it possible to detect the differential voltage even during wrapping, and matches the inverter output voltage with the commercial voltage. The purpose of the present invention is to provide a power supply switching control method that enables switching while lapping for a long time.
この発明は、インバータの出力電圧検出値は内部の電圧
設定値に負荷（出力）電流量を加えた値と等価であるこ
とに着目してなされたもので、要するに、出力電圧設定
値に負荷電流量を加えた値と商用電圧検出値との差電圧
を検出し、ラップ中であっても差電圧を補正入力として
入れ、インノく一層の出力電圧を商用電圧と一致させな
がら切り替えようとするものである。This invention was made based on the fact that the output voltage detection value of an inverter is equivalent to the sum of the internal voltage setting value and the load (output) current amount.In short, the output voltage setting value plus the load current A device that detects the difference voltage between the added value and the commercial voltage detection value, inputs the difference voltage as a correction input even during wrapping, and attempts to switch the output voltage while making it match the commercial voltage. It is.
〔発明の実施例〕 第１図はこの発明の実施例を示す構成図である。[Embodiments of the invention] FIG. 1 is a block diagram showing an embodiment of the present invention.
同図において、１はインバータ装置の如き電源、２は出
力電圧設定器、６は出力電圧検出器、４は商用電圧検出
器、５は出力電圧調節器、６，７はスイッチ、８は出力
電流検出器、９，１０は比較器である。In the figure, 1 is a power source such as an inverter device, 2 is an output voltage setter, 6 is an output voltage detector, 4 is a commercial voltage detector, 5 is an output voltage regulator, 6 and 7 are switches, and 8 is an output current Detectors 9 and 10 are comparators.
インバータ１から負荷に給電している時は、スイッチ６
が閉じており、出力電圧設定器２と出力電圧検出器３と
出力電流検出器８との各出力が比較器９にて突き合わさ
れ、出力電圧調節器５により、インバータ出力電圧は設
定値電圧に出力電流量に応じた分だけ上乗せされて制御
される。この ”状態から商用側へ切り替える時には、
出力電圧設定器２の出力と商用電圧検出器４の出力との
差から出力電流量に応じて高くなっている分を差し引い
て、実際のインバータ出力電圧と商用電圧との差電圧Δ
Ｖが比較器１０を介して出力電圧調節器５の補正入力と
して入り、これにより、インバータ出力電圧が商用電圧
と一致するように制御が行なわれる。なお、ここでいう
Δ■はインバータの出力電流が零で、商用電圧が１００
％の時は零であるが、出力電流によってインバータ出力
電圧が２％ｕｐしていると、商用電圧が１００％であっ
てもΔ■には２％下げる様な量が送出される。インバー
タ出力電圧が商用電圧と一致すると、スイッチ７が閉じ
て両電源がラップする。これにより、出力電圧検出器３
は商用電圧に規定されるが、Δ■の補正入力によってイ
ンバータの内部誘起電圧は商用電圧に一致する。従って
、ラップ中であってもインバータ出力電圧は商用電圧に
一致したままとなる。また、ラップ中に商用電圧が変動
してもそれに応じてΔ■の補正が入るため、常に商用電
圧と一致する。When power is being supplied to the load from inverter 1, switch 6
is closed, the outputs of the output voltage setter 2, output voltage detector 3, and output current detector 8 are matched by the comparator 9, and the inverter output voltage is adjusted to the set value voltage by the output voltage regulator 5. Control is performed by adding an amount corresponding to the amount of output current. When switching from this “state” to the commercial side,
From the difference between the output of the output voltage setter 2 and the output of the commercial voltage detector 4, the amount that increases according to the amount of output current is subtracted to obtain the difference voltage Δ between the actual inverter output voltage and the commercial voltage.
V enters as a correction input to the output voltage regulator 5 via the comparator 10, thereby controlling the inverter output voltage to match the commercial voltage. Note that Δ■ here means that the inverter output current is zero and the commercial voltage is 100%.
%, it is zero, but if the inverter output voltage increases by 2% due to the output current, even if the commercial voltage is 100%, an amount that lowers it by 2% is sent to Δ■. When the inverter output voltage matches the commercial voltage, switch 7 closes and both power supplies overlap. As a result, the output voltage detector 3
is defined as the commercial voltage, but the internal induced voltage of the inverter matches the commercial voltage by the correction input of Δ■. Therefore, even during wrapping, the inverter output voltage remains consistent with the commercial voltage. Furthermore, even if the commercial voltage changes during lapping, Δ■ is corrected accordingly, so it always matches the commercial voltage.
第２図はこの発明の他の実施例を示す構成図である。こ
れは、商用電圧と合わせようとする時には、出力電流検
出器をスイッチ１１によりＯＦＦにしてインバータ出力
電圧が内部の電圧設定値と等価になる様にし、その電圧
設定値と商用電圧検出値との差電圧ΔＶを調節器５の補
正入力として入れる様にしたもので、とプすることによ
っても第１図と同様の効果を期待することができる。FIG. 2 is a block diagram showing another embodiment of the invention. When trying to match the commercial voltage, the output current detector is turned off by switch 11 so that the inverter output voltage becomes equal to the internal voltage setting value, and the voltage setting value and the detected commercial voltage value are The difference voltage ΔV is inputted as a correction input to the regulator 5, and the same effect as in FIG. 1 can be expected by tapping the voltage difference ΔV.
この発明によれば、インバータ電圧設定値に負荷電流量
を加えた値と商用電圧検出値との差電圧を検出している
ので、負荷電流によってインバー出力電圧が調節されて
も、商用電圧との差電圧が極めて簡単かつ正確に検出で
き、インバータの出力電圧を商用電圧と一致させながら
長時間ラップさせることが可能である。また、ラップ中
に商用電圧が変動した場合でも、それに追従するので、
横流が流れる心配もない。According to this invention, since the difference voltage between the inverter voltage setting value plus the load current amount and the detected commercial voltage value is detected, even if the inverter output voltage is adjusted by the load current, it will not be the same as the commercial voltage. The differential voltage can be detected extremely easily and accurately, and it is possible to keep the inverter's output voltage consistent with the commercial voltage and wrap it for a long time. In addition, even if the commercial voltage fluctuates during wrapping, it will follow it, so
There is no need to worry about cross currents.
第１図はこの発明の実施例を示す構成図、第２図はこの
発明の他の実施例を示す構成図である。
符号説明
１・・・・・・電源（インバータ）、２・・・・・・出
力電圧設定器、６・・−・・・出力電圧検出器、４・・
・・・・商用電圧検出器、５・・・・・・出力電圧調節
器、６，７，１１・・・・・・スイッチ、８・・・・・
・出力電流検出器、９，１ｏ・・・・・・比較器
代理人 弁理士 並 木 昭 夫
代理人 弁理士 松 崎 清FIG. 1 is a block diagram showing an embodiment of the invention, and FIG. 2 is a block diagram showing another embodiment of the invention. Description of symbols 1...Power supply (inverter), 2...Output voltage setting device, 6...Output voltage detector, 4...
...Commercial voltage detector, 5...Output voltage regulator, 6, 7, 11...Switch, 8...
・Output current detector, 9,1o...Comparator agent: Patent attorney Akio Namiki Patent attorney: Kiyoshi Matsuzaki
Claims (1)
とづいて制御する制御手段を備えたインバータ装置から
なる電源とをそれぞれスイッチを介して負荷への給電母
線に接続し、電源切替時にはこれらスイッチをともに閉
成することにより給電を瞬断させることなく互いにラッ
プさせて切り替えを行なう電源切替制御方式において、
商用電源の電圧値とインバータ装置からなる電源の設定
電圧値に前記出力電流量を加算した値との偏差を検出す
る検出手段を設け、該偏差を前記制御手段に補正信号と
して入力することにより両電源の電圧を一致させてラッ
プ時の電源切り替えを行なうことを特徴とする電源切替
制御方式。A commercial power source and a power source consisting of an inverter device equipped with a control means that controls the output voltage based on its set value and output current amount are connected to the power supply bus to the load through switches, and when switching the power source, these power sources are In a power supply switching control method that wraps and switches between each other without causing a momentary interruption of the power supply by closing both switches,
A detection means is provided for detecting a deviation between the voltage value of the commercial power supply and a value obtained by adding the output current amount to the set voltage value of the power supply consisting of an inverter device, and the deviation is inputted as a correction signal to the control means, thereby making it possible to A power supply switching control method characterized by matching power supply voltages and switching power supplies during laps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58229762A JPS60125127A (en) | 1983-12-07 | 1983-12-07 | Power source switching control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58229762A JPS60125127A (en) | 1983-12-07 | 1983-12-07 | Power source switching control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60125127A true JPS60125127A (en) | 1985-07-04 |
| JPH0440929B2 JPH0440929B2 (en) | 1992-07-06 |
Family
ID=16897273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58229762A Granted JPS60125127A (en) | 1983-12-07 | 1983-12-07 | Power source switching control system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60125127A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03164038A (en) * | 1989-11-20 | 1991-07-16 | Mitsubishi Electric Corp | Inverter device |
-
1983
- 1983-12-07 JP JP58229762A patent/JPS60125127A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03164038A (en) * | 1989-11-20 | 1991-07-16 | Mitsubishi Electric Corp | Inverter device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0440929B2 (en) | 1992-07-06 |
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