JPH0242080Y2 - - Google Patents
Info
- Publication number
- JPH0242080Y2 JPH0242080Y2 JP1980048535U JP4853580U JPH0242080Y2 JP H0242080 Y2 JPH0242080 Y2 JP H0242080Y2 JP 1980048535 U JP1980048535 U JP 1980048535U JP 4853580 U JP4853580 U JP 4853580U JP H0242080 Y2 JPH0242080 Y2 JP H0242080Y2
- Authority
- JP
- Japan
- Prior art keywords
- current voltage
- voltage
- rectifier
- inverter device
- converts
- 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
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Description
【考案の詳細な説明】
この考案は、たとえばルームクーラなどの空調
機においてその圧縮機モータの回転数制御に応用
されるインバータ装置の改良に関する。[Detailed Description of the Invention] This invention relates to an improvement in an inverter device that is applied to control the rotational speed of a compressor motor in an air conditioner such as a room cooler.
一般に、この種のインバータ装置は、第４図に
示すように商用交流電源１からの交流電圧を、電
源スイツチ２を介して全波整流器３に供給するこ
とにより一旦直流電圧に変換し、この直流電圧を
高周波チヨツパなどの周波数変換部４にて任意周
波数の交流電圧に変換し、この交流電圧を圧縮機
モータ５に供給することにより、上記モータ５の
回転数を広範囲に変化させるものである。そし
て、このようなインバータ装置では、第４図に示
すように整流器３の出力側に大容量（たとえば
1000〜2000μF）の平滑用コンデンサ６を挿入し、
直流回路部の電圧安定化を図つている。このた
め、電源スイツチ２の投入時、コンデンサ６への
突入電流が非常に大きくなり、整流器３が破壊さ
れてしまう恐れがある。 Generally, this type of inverter device converts AC voltage from a commercial AC power supply 1 into DC voltage by supplying it to a full-wave rectifier 3 via a power switch 2, as shown in FIG. The voltage is converted into an alternating current voltage of an arbitrary frequency by a frequency converter 4 such as a high frequency chopper, and this alternating voltage is supplied to the compressor motor 5, thereby changing the rotation speed of the motor 5 over a wide range. In such an inverter device, as shown in FIG. 4, a large capacity (for example,
Insert the smoothing capacitor 6 (1000~2000μF),
Efforts are being made to stabilize the voltage in the DC circuit section. Therefore, when the power switch 2 is turned on, the rush current to the capacitor 6 becomes extremely large, and there is a possibility that the rectifier 3 may be destroyed.
そこで従来は、第４図に示すように整流器３と
コンデンサ６との間に電流抑制抵抗７を直列に接
続することにより、電源投入時の突入電流を小さ
くし、コンデンサ６が充電されてその端子間電圧
が所定値に達すると電磁開閉器８を作動させ、そ
の常開接点８ａによつて抵抗７の両端間を短絡す
るようにしている。ここで、第４図の回路におけ
る突入電流波形を示すと第５図のようになり、こ
の場合の突入電流ｉは、
ｉ＝Ｅ／Ｒ＋ｒ・ｅ−t/(R+r) Conventionally, a current suppressing resistor 7 is connected in series between the rectifier 3 and the capacitor 6, as shown in FIG. When the voltage between the two ends reaches a predetermined value, the electromagnetic switch 8 is operated to short-circuit both ends of the resistor 7 through its normally open contact 8a. Here, the inrush current waveform in the circuit of Fig. 4 is shown in Fig. 5, and the inrush current i in this case is: i=E/R+r・e− t/(R+r)
Claims (1)
り直流電圧に変換し、この直流電圧をチヨツピン
グして任意周波数の交流電圧に変換するインバー
タ装置において、前記整流器と平滑用コンデンサ
との間にリアクタを直列接続し、このリアクタに
正特性サーミスタを並列接続したことを特徴とす
るインバータ装置。 In an inverter device that converts an alternating current voltage into a direct current voltage using a rectifier and a smoothing capacitor, and converts this direct current voltage into an alternating current voltage of an arbitrary frequency by chopping, a reactor is connected in series between the rectifier and the smoothing capacitor, An inverter device characterized in that a positive temperature coefficient thermistor is connected in parallel to this reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980048535U JPH0242080Y2 (en) | 1980-04-10 | 1980-04-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980048535U JPH0242080Y2 (en) | 1980-04-10 | 1980-04-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56149595U JPS56149595U (en) | 1981-11-10 |
| JPH0242080Y2 true JPH0242080Y2 (en) | 1990-11-08 |
Family
ID=29643535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1980048535U Expired JPH0242080Y2 (en) | 1980-04-10 | 1980-04-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0242080Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6149592B2 (en) * | 2013-08-08 | 2017-06-21 | オムロン株式会社 | Power supply |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4215956Y1 (en) * | 1964-03-24 | 1967-09-13 | ||
| JPS5321531B2 (en) * | 1973-06-14 | 1978-07-03 | ||
| JPS5520466B2 (en) * | 1974-06-19 | 1980-06-03 | ||
| JPS5262621A (en) * | 1975-11-19 | 1977-05-24 | Toshiba Corp | Inverter |
| JPS5836588B2 (en) * | 1978-09-04 | 1983-08-10 | 松下電器産業株式会社 | Switching type constant voltage circuit |
-
1980
- 1980-04-10 JP JP1980048535U patent/JPH0242080Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56149595U (en) | 1981-11-10 |
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