JP2599423B2 - Compressor drive system with dual power supply - Google Patents
Compressor drive system with dual power supplyInfo
- Publication number
- JP2599423B2 JP2599423B2 JP63093659A JP9365988A JP2599423B2 JP 2599423 B2 JP2599423 B2 JP 2599423B2 JP 63093659 A JP63093659 A JP 63093659A JP 9365988 A JP9365988 A JP 9365988A JP 2599423 B2 JP2599423 B2 JP 2599423B2
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- inverter
- compressor
- voltage
- switch
- 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
Links
Landscapes
- Control Of Ac Motors In General (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、空気調和機における圧縮機の駆動装置に関
するものである。Description: TECHNICAL FIELD The present invention relates to a compressor driving device in an air conditioner.
従来の技術 従来、空気調和機を運転する場合、交流電源或は直流
電源単独にて駆動するものが多い。2. Description of the Related Art Conventionally, many air conditioners are driven by an AC power supply or a DC power supply alone.
発明が解決しようとする課題 ところが、従来のように交流もしくは直流のいずれか
一方の電源により運転される制御は、使用される電源が
限られてしまい、汎用性に欠けるものであった。Problems to be Solved by the Invention However, conventional control operated by either AC or DC power supply is limited in power supply to be used and lacks versatility.
又、通常運転時は交流電源とし、非常時の運転に直流
電源を使用するといった場合には適応できない問題があ
る。Further, there is a problem that it cannot be applied to a case where an AC power supply is used during normal operation and a DC power supply is used for emergency operation.
本発明は、空気調和機の駆動電源が、交流及び直流の
２系統存在する場合における圧縮機の駆動方法について
明らかにしようとするものである。The present invention seeks to clarify a method of driving a compressor in a case where there are two AC and DC drive power supplies for an air conditioner.
課題を解決するための手段 上記課題を解決するために本発明は、交流を出力する
交流電源装置と、直流を出力する直流電流装置と、前記
直流を交流に変換する逆変換装置と、前記交流電源装置
と逆変換装置の間に設けられかつ、交流を直流に変換す
る順変換装置と、前記逆変換装置からの電源により駆動
される圧縮機モータと、前記順変換装置への供給電源
を、前記交流電源による交流と直流電源による直流とに
切換える切り換え手段と、前記交流電源装置あるいは直
流電源装置の作動を検出し、前記切換え手段へ出力する
とともに前記逆変換装置へインバータ駆動信号を出力す
る制御装置を備え、前記制御装置を、前記交流電源装
置、直流電源装置のいずれかが作動していることを検出
する検出手段と、休止していた電源装置の作動を検知
し、作動中の電源を停止させる停止手段と、この停止手
段の停止信号により前記切換え手段へ切換え信号を出力
する出力手段と、前記逆変換装置の直流入力電圧を検出
する直流電圧検出手段と、前記直流電圧が一定の範囲内
にあるかどうかを判断する直流電圧判断手段と、インバ
ータ駆動信号を出力する駆動信号出力手段より構成した
ものである。Means for Solving the Problems In order to solve the above problems, the present invention provides an AC power supply device that outputs an AC, a DC current device that outputs a DC, an inverse converter that converts the DC into an AC, and the AC A forward conversion device that is provided between a power supply device and an inverse conversion device and converts AC to DC, a compressor motor driven by power from the inverse conversion device, and a power supply to the forward conversion device, Switching means for switching between AC by the AC power supply and DC by the DC power supply; control for detecting the operation of the AC power supply or the DC power supply, outputting to the switching means and outputting an inverter drive signal to the inverting device; A detecting device for detecting that any one of the AC power supply device and the DC power supply device is operating, and detecting operation of the power supply device that has been suspended. Stop means for stopping the power supply in operation, output means for outputting a switching signal to the switching means by a stop signal of the stopping means, DC voltage detecting means for detecting a DC input voltage of the inverting device, It comprises a DC voltage determining means for determining whether the DC voltage is within a certain range, and a drive signal output means for outputting an inverter drive signal.
作用 本発明によれば、空気調和機の駆動電源が、交流及び
直流の２系統存在する場合でも、駆動電源の切り換えが
円滑に行われ、空気調和機の冷凍サイクルに過大な負荷
が加わることを防止できるものである。Effect According to the present invention, even when the air conditioner has two drive systems, alternating current and direct current, the switching of the drive power is performed smoothly, and an excessive load is applied to the refrigeration cycle of the air conditioner. It can be prevented.
実 施 例 以下、本発明の一実施例を図面に基づいて説明する。Embodiment An embodiment of the present invention will be described below with reference to the drawings.
第１図は本発明の基本構成図であり、同図に於いて、
１は交流電源装置、２は交流電源装置１を開閉する第１
の開閉器、３は直流電源装置、４は直流電源装置３を開
閉する第２の開閉器である。５は交流を直流に変換する
順変換装置であり、その交流入力側は第１の開閉器２の
出力側に接続され、直流出力側は第２の開閉器４の出力
側及び後述する直流電圧検出装置12に接続される。12は
順変換装置５の直流出力電圧を検知する直流電圧検出装
置である。13は直流電圧が一定の範囲内にあるかを判断
する直流電圧判断装置である。６は直流を交流に変換す
る逆変換装置であり、その交流出力側は圧縮機７に接続
される。圧縮機７は、熱交換器８及び９と膨張弁10に冷
却配管を通じて接続され、圧縮機７の運転に伴い冷媒が
循環し熱交換される。11は制御装置であり、開閉器等を
介さずに直接交流電源装置１に接続され、直流電源装置
３及び直流電圧判断装置13の出力状態に応じて第１の開
閉器１、第２の開閉器４、逆変換装置６を制御する。FIG. 1 is a diagram showing the basic configuration of the present invention. In FIG.
1 is an AC power supply, and 2 is a first switch for opening and closing the AC power supply 1.
, 3 is a DC power supply, and 4 is a second switch for opening and closing the DC power supply 3. Reference numeral 5 denotes a forward converter for converting AC to DC, the AC input side of which is connected to the output side of the first switch 2, the DC output side of which is the output side of the second switch 4 and a DC voltage to be described later. Connected to the detection device 12. Reference numeral 12 denotes a DC voltage detector for detecting the DC output voltage of the forward converter 5. Reference numeral 13 denotes a DC voltage determining device that determines whether the DC voltage is within a certain range. Reference numeral 6 denotes an inverter for converting DC into AC, and the AC output side thereof is connected to the compressor 7. The compressor 7 is connected to the heat exchangers 8 and 9 and the expansion valve 10 through a cooling pipe, and the refrigerant circulates and exchanges heat with the operation of the compressor 7. Reference numeral 11 denotes a control device, which is directly connected to the AC power supply device 1 without passing through a switch or the like, and according to the output state of the DC power supply device 3 and the DC voltage determination device 13, the first switch 1 and the second switch Control unit 4 and the inverse conversion device 6.
これらの様子を第２図タイミングチャートにより説明
する。同図に於て、まず交流電源装置１が起動し、制御
装置11が作動を開始する。この時点で直流電源装置３が
起動していない場合には、その状態を制御装置11が判断
し、第１の開閉器２をONさせる。第１の開閉器２がON
し、順変換装置５の直流出力電圧が安定した後に、制御
装置11からインバータ駆動信号が送出され、逆変換装置
６を介して圧縮機７に交流電圧が印加され、圧縮機７は
運転される。These situations will be described with reference to the timing chart of FIG. In FIG. 1, first, the AC power supply device 1 is activated, and the control device 11 starts operating. If the DC power supply 3 has not been activated at this time, the control device 11 determines the state and turns on the first switch 2. First switch 2 is ON
After the DC output voltage of the forward converter 5 is stabilized, an inverter drive signal is sent from the control device 11, an AC voltage is applied to the compressor 7 via the inverse converter 6, and the compressor 7 is operated. .
次にこの状態で直流電源装置３が起動すると、この状
態を制御装置11が判断し、インバータ駆動信号の送出を
停止し、圧縮機７の運転を停止させる。その後まず第１
の開閉器２をOFFし、次いで第２の開閉器４をONさせ
る。さらに圧縮機７を一旦停止させた後は、空気調和機
の冷凍サイクルの圧力がバランスするまで一定時間（約
２〜３分間）保持した後に、インバータ駆動信号を送出
し、逆変換装置６を介して圧縮機７の運転を再開させ
る。Next, when the DC power supply 3 is started in this state, the control device 11 determines this state, stops sending the inverter drive signal, and stops the operation of the compressor 7. Then first
Switch 2 is turned off, and then the second switch 4 is turned on. Further, after the compressor 7 is temporarily stopped, the compressor 7 is held for a certain period of time (about 2 to 3 minutes) until the pressure of the refrigeration cycle of the air conditioner is balanced, and then an inverter drive signal is sent out. To restart the operation of the compressor 7.
同様にさらに直流電源装置３が停止すると、その状態
を制御装置11が判断し、インバータ駆動信号の送出を停
止し、圧縮機７の運転を停止させる。その後まず第２の
開閉器４をOFFし、次いで第１の開閉器２をONさせる。
さらに圧縮機７を一旦停止させた後は、空気調和機の冷
凍サイクルの圧力がバランスするまで一定時間（約２〜
３分間）保持した後に、インバータ駆動信号を送出し、
逆変換装置６を介して圧縮機７の運転を再開させる。以
下同様のサイクルを繰り返すものである。Similarly, when the DC power supply device 3 is further stopped, the control device 11 determines the state, stops sending the inverter drive signal, and stops the operation of the compressor 7. Thereafter, first, the second switch 4 is turned off, and then the first switch 2 is turned on.
Further, after the compressor 7 is temporarily stopped, a certain period of time (approximately 2 to 2) is required until the pressure of the refrigeration cycle of the air conditioner is balanced.
3 minutes), then send the inverter drive signal,
The operation of the compressor 7 is restarted via the inverter 6. Hereinafter, the same cycle is repeated.
また直流電圧検出装置12は、常に逆変換装置６の直流
入力電圧を監視しており、交流電源装置１或は直流電源
装置３等の異常により直流電圧値が一定の範囲を越える
と制御装置11は、直流電圧判断装置13を介して電圧異常
状態を判断し、インバータ駆動信号の送出を停止し、圧
縮機７の運転を停止させ、システムを保護するものであ
る。The DC voltage detector 12 constantly monitors the DC input voltage of the inverter 6, and when the DC voltage value exceeds a certain range due to an abnormality in the AC power supply 1 or the DC power supply 3, etc. Is for judging an abnormal voltage state via the DC voltage judging device 13, stopping the transmission of the inverter drive signal, stopping the operation of the compressor 7, and protecting the system.
発明の効果 以上説明したように、本発明は、簡単な構成で電源の
切り換えに際し、開閉器に過大な電流が流れたり又は過
大な電圧が印加されたり、さらに圧縮機に過大な負荷が
加わることを防止することができ、円滑に電源を切り換
えて運転することが出来る効果を奏するものである。Effect of the Invention As described above, in the present invention, when switching the power supply with a simple configuration, an excessive current flows or an excessive voltage is applied to the switch, and an excessive load is applied to the compressor. Can be prevented, and the power supply can be smoothly switched to operate.
第１図は本発明の一実施例を示す圧縮機の駆動装置の基
本構成図、第２図は同圧縮機の駆動装置の動作内容を示
すタイミングチャートである。 １……交流電源装置、２……第１の開閉器、３……直流
電源装置、４……第２の開閉器、５……順変換装置、６
……逆変換装置、７……圧縮機、11……制御装置、12…
…直流電圧検知装置、13……直流電圧判断装置。FIG. 1 is a basic configuration diagram of a compressor driving device showing one embodiment of the present invention, and FIG. 2 is a timing chart showing operation contents of the compressor driving device. DESCRIPTION OF SYMBOLS 1 ... AC power supply device, 2 ... 1st switch, 3 ... DC power supply device, 4 ... 2nd switch, 5 ... Forward conversion device, 6
…… Inverter, 7… Compressor, 11… Controller, 12…
... DC voltage detection device, 13 ... DC voltage judgment device.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭62−250876（ＪＰ，Ａ) ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-62-250876 (JP, A)
Claims (1)
力する直流電源装置と、前記直流を交流に変換する逆変
換装置と、前記交流電源装置と逆変換装置の間に設けら
れかつ、交流を直流に変換する順変換装置と、前記逆変
換装置からの電源により駆動される圧縮機モータと、前
記順変換装置への給電を、前記交流電源と直流電源に切
り換える手段と、前記交流電源装置より給電されて動作
し前記直流電源装置の作動を検出し、前記切り換え手段
へ出力するとともに前記逆変換装置へインバータ駆動信
号を出力する制御装置と、前記逆変換装置の直流入力電
圧検出装置を備え、前記切り換え手段が動作する場合に
前記逆変換装置を停止するとともに、一定の遅延時間を
設け、前記逆変換装置の運転再開を禁止する二電源によ
る圧縮機の駆動装置。1. An AC power supply for outputting an AC, a DC power supply for outputting a DC, an inverse converter for converting the DC to an AC, and a power supply provided between the AC power supply and the inverter. A forward converter for converting alternating current to direct current, a compressor motor driven by a power supply from the inverse converter, a means for switching power supply to the forward converter to the AC power supply and DC power supply, and the AC power supply A control device that operates by being supplied with power from the device, detects the operation of the DC power supply device, outputs the switching power to the switching means, and outputs an inverter drive signal to the inverter, and a DC input voltage detector of the inverter. A driving device for the compressor by a dual power supply for stopping the inverter when the switching means operates, providing a fixed delay time, and prohibiting restarting operation of the inverter. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63093659A JP2599423B2 (en) | 1988-04-15 | 1988-04-15 | Compressor drive system with dual power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63093659A JP2599423B2 (en) | 1988-04-15 | 1988-04-15 | Compressor drive system with dual power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01268489A JPH01268489A (en) | 1989-10-26 |
| JP2599423B2 true JP2599423B2 (en) | 1997-04-09 |
Family
ID=14088520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63093659A Expired - Lifetime JP2599423B2 (en) | 1988-04-15 | 1988-04-15 | Compressor drive system with dual power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2599423B2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62250876A (en) * | 1986-04-22 | 1987-10-31 | Mitsubishi Electric Corp | Voltage type inverter unit |
-
1988
- 1988-04-15 JP JP63093659A patent/JP2599423B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01268489A (en) | 1989-10-26 |
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