JPH02125537U - - Google Patents
Info
- Publication number
- JPH02125537U JPH02125537U JP195189U JP195189U JPH02125537U JP H02125537 U JPH02125537 U JP H02125537U JP 195189 U JP195189 U JP 195189U JP 195189 U JP195189 U JP 195189U JP H02125537 U JPH02125537 U JP H02125537U
- Authority
- JP
- Japan
- Prior art keywords
- switching element
- value
- voltage
- circuit
- bus voltage
- 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
- 230000002265 prevention Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000009499 grossing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Protection Of Static Devices (AREA)
Description
第１図はこの考案の一実施例によるインバータ
装置の突入電流防止回路の回路構成図、第２図は
従来のインバータ装置の突入電流防止回路の回路
構成図、第３図はこの考案の原理説明図である。
図において、５は電圧検出回路、６は電圧記憶
回路、７は差分回路、８はスイツチング素子制御
回路、１０は電流制限抵抗である。なお、図中、
同一符号は同一、又は相当部分を示す。
Figure 1 is a circuit configuration diagram of an inrush current prevention circuit for an inverter device according to an embodiment of this invention, Figure 2 is a circuit diagram of a conventional inrush current prevention circuit for an inverter equipment, and Figure 3 is an explanation of the principle of this invention. It is a diagram. In the figure, 5 is a voltage detection circuit, 6 is a voltage storage circuit, 7 is a differential circuit, 8 is a switching element control circuit, and 10 is a current limiting resistor. In addition, in the figure,
The same reference numerals indicate the same or equivalent parts.
Claims (1)
流電力に交換するインバータ装置の制御回路であ
つて、逆変換部への入力電圧である直流母線電圧
を検出し、直流母線電圧値として出力する電圧検
出回路と、この直流母線電圧値をある一定時間間
隔ごとに記憶するとともに、前回に記憶した直流
母線電圧値を出力する電圧記憶回路と、前記電圧
検出回路からの現在の直流母線電圧値と前記電圧
記憶回路からの前回に記憶した直流母線電圧値の
差の絶対値を求め、その値とスイツチング素子が
ＯＮ状態の時には第１の規定値とを、また、スイ
ツチング素子がＯＦＦ状態の時には第２の規定値
とを比較し、この絶対値が規定値より大きい間は
スイツチング素子をＯＦＦさせ、この絶対値が規
定値より小さい間はＯＮさせるスイツチング素子
制御信号を出力する差分回路と、このスイツチン
グ素子制御信号に従つてスイツチング素子のＯＮ
，ＯＦＦを制御するスイツチング素子制御回路と
、このスイツチング素子制御回路により制御され
るスイツチング素子と直流母線電流を制限する電
流制限抵抗を並列に、順変換部と平滑コンデンサ
の間に入れたことを特徴とするインバータ装置の
突入電流防止回路。 A control circuit for an inverter device that exchanges alternating current or direct current power into variable frequency, variable voltage alternating current power, which detects the direct current bus voltage that is the input voltage to the inverse converter and outputs it as a direct current bus voltage value. a voltage storage circuit that stores the DC bus voltage value at certain time intervals and outputs the previously stored DC bus voltage value; and a current DC bus voltage value from the voltage detection circuit and the voltage. The absolute value of the difference between the previously stored DC bus voltage values from the storage circuit is calculated, and the value is used as the first specified value when the switching element is in the ON state, and as the second specified value when the switching element is in the OFF state. A differential circuit outputs a switching element control signal that compares the absolute value with a specified value and turns the switching element OFF while the absolute value is greater than the specified value, and turns it ON while the absolute value is smaller than the specified value, and this switching element control circuit. Turn on the switching element according to the signal
, a switching element control circuit that controls OFF, a switching element controlled by this switching element control circuit, and a current limiting resistor that limits the DC bus current are placed in parallel between the forward conversion section and the smoothing capacitor. Inrush current prevention circuit for inverter equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP195189U JPH02125537U (en) | 1989-01-11 | 1989-01-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP195189U JPH02125537U (en) | 1989-01-11 | 1989-01-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02125537U true JPH02125537U (en) | 1990-10-16 |
Family
ID=31505836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP195189U Pending JPH02125537U (en) | 1989-01-11 | 1989-01-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02125537U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011004597A (en) * | 2010-09-01 | 2011-01-06 | Daikin Industries Ltd | Method and device for controlling converter |
-
1989
- 1989-01-11 JP JP195189U patent/JPH02125537U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011004597A (en) * | 2010-09-01 | 2011-01-06 | Daikin Industries Ltd | Method and device for controlling converter |
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