JPH0584151B2 - - Google Patents
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- Publication number
- JPH0584151B2 JPH0584151B2 JP58178550A JP17855083A JPH0584151B2 JP H0584151 B2 JPH0584151 B2 JP H0584151B2 JP 58178550 A JP58178550 A JP 58178550A JP 17855083 A JP17855083 A JP 17855083A JP H0584151 B2 JPH0584151 B2 JP H0584151B2
- Authority
- JP
- Japan
- Prior art keywords
- drive
- switching element
- power supply
- section
- terminal
- 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
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
- H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
- H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、インバータ装置等に用いられるスイ
ツチング素子の駆動回路に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a drive circuit for switching elements used in inverter devices and the like.
従来例の構成とその問題点
近年、省エネルギ、快適性の面より、誘導モー
タの可変速度が強く要望されており、その手段と
してインバータ装置の小型化、低価格化に非常な
期待が寄せられている。Conventional configurations and their problems In recent years, there has been a strong demand for variable speed induction motors from the standpoint of energy saving and comfort, and there are great expectations for miniaturization and lower cost of inverter devices as a means of achieving this. ing.
以下に従来のインバータ装置の使用例を第１図
第２図に示し説明する。 Examples of the use of a conventional inverter device are shown in FIG. 1, FIG. 2, and will be described below.
第１図は、インバータ装置の基本構成図、第２
図は、インバータ装置の駆動回路である。 Figure 1 is a basic configuration diagram of the inverter device;
The figure shows a drive circuit for an inverter device.
第１図で、１はAC電源、２はAC電源の整流回
路、３，４，５はそれぞれ前記整流回路２と接続
するＵ相、Ｖ相、Ｗ相の各相駆動回路である。そ
して、各相駆動回路３，４，５は、第１ベース部
６、第１スイツチング素子７、第２ベース部８、
第２スイツチング素子９により構成される。１０
は周波数を設定する周波数設定部、１１は前記周
波数設定部１０の信号を受け、各相駆動回路の第
１、第２ベース部６，８へ信号を出力する制御回
路部、１２は各相駆動回路３，４，５に接続する
モータである。 In FIG. 1, 1 is an AC power source, 2 is a rectifier circuit for the AC power source, and 3, 4, and 5 are U-phase, V-phase, and W-phase drive circuits connected to the rectifier circuit 2, respectively. Each phase drive circuit 3, 4, 5 includes a first base portion 6, a first switching element 7, a second base portion 8,
It is constituted by a second switching element 9. 10
11 is a frequency setting section that sets the frequency; 11 is a control circuit section that receives the signal from the frequency setting section 10 and outputs a signal to the first and second base sections 6 and 8 of each phase drive circuit; 12 is each phase drive circuit; This is a motor connected to circuits 3, 4, and 5.
第２図は、第１図中の駆動回路３，４，５の具
体例を示し、第１図と同じ部分には同じ番号をつ
け、重複する説明は省略する。１３は第１ベース
部６および第２ベース部８内の動力源の直流電源
部、１４は第１スイツチング素子７をON−OFF
する第１ドライブ部、１５は第２スイツチング素
子９をON−OFFする第２ドライブ部、１６，１
７は第１、第２ドライブ部１４，１５への信号入
力端子である。 FIG. 2 shows a specific example of the drive circuits 3, 4, and 5 in FIG. 1, and the same parts as in FIG. 1 are given the same numbers, and redundant explanation will be omitted. 13 is a DC power supply section of the power source in the first base part 6 and second base part 8, and 14 is for turning the first switching element 7 on and off.
15 is a second drive section that turns on and off the second switching element 9, 16, 1
7 is a signal input terminal to the first and second drive sections 14 and 15.
以上の構成によれば、第１図、第２図より周波
数設定部１０の周波数を設定すれば、制御回路部
１１は、前記設定信号に基ずき電気角で120°の位
相間隔で、Ｕ，Ｖ，Ｗ相駆動回路３，４，５の第
１、第２ベース部６，８の入力端子１６，１７へ
それぞれの第１、第２スイツチング素子７，９を
交互にON−OFFする信号を出力する。すなわち
第１、第２ベース部６，８では、第１、第２ドラ
イブ部１４，１５の信号入力端子１６，１７で信
号を受け、各々の直流電源部１３により、第１、
第２スイツチング素子７，９を交互にON−OFF
し、整流回路２により供給される直流電圧を等価
的に３相交流に変換し、モータ１２の運転を行な
う。 According to the above configuration, if the frequency of the frequency setting section 10 is set based on FIGS. 1 and 2, the control circuit section 11 will control the U , a signal to the input terminals 16 and 17 of the first and second base parts 6 and 8 of the V, W phase drive circuits 3, 4 and 5 to alternately turn on and off the respective first and second switching elements 7 and 9. Output. That is, the first and second base parts 6 and 8 receive signals at the signal input terminals 16 and 17 of the first and second drive parts 14 and 15, and the respective DC power supply parts 13 output the first and second base parts 6 and 8, respectively.
Turns on and off the second switching elements 7 and 9 alternately
Then, the DC voltage supplied by the rectifier circuit 2 is equivalently converted into three-phase AC voltage, and the motor 12 is operated.
この様に、直列に接続された２個の第１、第２
スイツチング素子７，９を交互にON−OFFする
場合において、まず、第１スイツチング素子７を
ONするには、駆動信号端子、例えば、トランジ
スタとすると、ベースに電圧を印加する事が必要
である。一方、第１スイツチング素子７の中点電
位７ａは、第２スイツチング素子９がON−OFF
する度に高くなつたり、低くなつたりするので、
基準電位が定まらず、効率よくON出来ない。そ
こで、効率よく第１スイツチング素子７をON−
OFFするには、第２図の様に第１、第２ベース
部６，８にそれぞれ磁気結合により電気的に絶縁
した専用の直流電源部１３を設置する必要があつ
た。その為、従来の構成によれば直列に接続され
る２個の第１、第２スイツチング素子７，９を交
互に、効率よくON−OFFするには、各スイツチ
ング素子毎に、磁気結合した専用の直流電源部１
３が必要となり、特に効率を重視する第１図に示
す形式の多相インバータ装置とした場合には磁気
結合により電気的に絶縁した専用の直流電源部１
３は最低でも（相数×２）個が必要となり、小型
化、低価格化が図りにくい。 In this way, the two first and second
When switching the switching elements 7 and 9 on and off alternately, first, the first switching element 7 is turned on and off.
To turn it on, it is necessary to apply a voltage to the drive signal terminal, for example, the base of a transistor. On the other hand, the midpoint potential 7a of the first switching element 7 is
Every time I do it, it gets higher or lower, so
The reference potential is not determined and it cannot be turned on efficiently. Therefore, the first switching element 7 can be turned ON-
In order to turn it off, it was necessary to install a dedicated DC power supply section 13 electrically insulated by magnetic coupling to the first and second base sections 6 and 8, respectively, as shown in FIG. Therefore, according to the conventional configuration, in order to efficiently turn on and off the two first and second switching elements 7 and 9 connected in series, each switching element must have a magnetically coupled dedicated DC power supply section 1
3 is required, and in the case of a multi-phase inverter of the type shown in Fig. 1 where efficiency is particularly important, a dedicated DC power supply section 1 electrically isolated by magnetic coupling is required.
3 requires at least (number of phases x 2) pieces, making it difficult to achieve miniaturization and cost reduction.
発明の目的
本発明は、インバータ装置の小型化、低価格化
を可能とするインバータ装置の駆動回路を提供す
る事を目的とする。OBJECTS OF THE INVENTION An object of the present invention is to provide a drive circuit for an inverter device that allows the inverter device to be made smaller and lower in price.
発明の構成
この目的を達成する為、本発明は、電力電源端
子間に、第１スイツチング素子と第２スイツチン
グ素子とを直列に接続し、前記第１スイツチング
素子の駆動信号端子に第１ドライブ部の一端を接
続し、前記第１ドライブ部のパワー端子をコンデ
ンサを介して、前記第１・第２スイツチング素子
間の中点に接続すると共に、前記第１ドライブ部
の他端を、周波数設定部からの信号を受けて第１
信号を発する制御回路部の端子に接続し、前記第
２スイツチング素子の駆動信号端子に第２ドライ
ブ部の一端を接続し、この第２ドライブ部の電源
端子に直流電源部を接続すると共に前記第２ドラ
イブ部の他端を前記制御回路部の第２信号を発す
る端子に接続し、前記直流電源部をダイオードを
介して前記第１ドライブ部のパワー端子と前記コ
ンデンサとの間に接続し、前記ダイオードを前記
第２スイツチング素子が導通したときに前記コン
デンサを充電する方向としたことにより、第２ス
イツチング素子がON時には、直流電源部よりダ
イオードを通してコンデンサを充電し、第２スイ
ツチング素子がOFF時、前記コンデンサの充電
電圧により、効率よく、第１スイツチング素子を
ONするもので、第１スイツチング素子の磁気結
合により電気的に絶縁した専用の直流電源部を不
要とし、インバータ装置の駆動回路の小型化、低
価格化を図るものである。Structure of the Invention In order to achieve this object, the present invention connects a first switching element and a second switching element in series between power supply terminals, and connects a first drive section to a drive signal terminal of the first switching element. The power terminal of the first drive section is connected to the midpoint between the first and second switching elements via a capacitor, and the other end of the first drive section is connected to a frequency setting section. After receiving the signal from
One end of the second drive section is connected to a terminal of a control circuit section that emits a signal, one end of the second drive section is connected to a drive signal terminal of the second switching element, and a DC power supply section is connected to a power supply terminal of the second drive section. The other end of the second drive section is connected to a terminal for emitting a second signal of the control circuit section, the DC power supply section is connected between the power terminal of the first drive section and the capacitor via a diode, and the By arranging the diode to charge the capacitor when the second switching element is conductive, when the second switching element is ON, the capacitor is charged from the DC power supply through the diode, and when the second switching element is OFF, the capacitor is charged. The charging voltage of the capacitor efficiently activates the first switching element.
The device is turned ON, and the magnetic coupling of the first switching element eliminates the need for a dedicated electrically insulated DC power supply section, thereby reducing the size and cost of the drive circuit of the inverter device.
実施例の説明
本発明のインバータ装置の駆動回路の一実施例
を第３図、第４図に示し説明する。DESCRIPTION OF EMBODIMENTS An embodiment of the drive circuit for the inverter device of the present invention is shown in FIGS. 3 and 4 and will be described.
第１図、第２図と同じ箇所には同じ番号をつけ
重複の説明は省略する。 The same parts as in FIGS. 1 and 2 are given the same numbers and redundant explanations will be omitted.
第４図で、３′，４′，５′は各相駆動回路６′，
８′は第１および第２ベース部、７，９は第１お
よび第２スイツチング素子、１４，１５は第１お
よび第２ドライブ部で、パワー端子１４ａと電源
端子１５ａを有する。これら第１および第２ドラ
イブ部１４，１５は、それぞれ前記第１および第
２スイツチング素子７，９のベース端子等の駆動
信号端子に接続されている。１３は磁気結合によ
り電気的に絶縁した専用の直流電源部、１６，１
７は第１、第２ドライブ部１４，１５の第１およ
び第２信号入力端子、１８は第１ドライブ部１４
のパワー端子１４ａと直列接続した第１および第
２スイツチング素子の中点２２とに接続するコン
デンサ、１９は前記パワー端子１４ａと直流電源
部１３を接続するダイオード、２０は第１スイツ
チング素子７が整流回路２の側と接続する側
の電力電源端子、２１は同様に第２スイツチング
素子９が整流回路２の側と接続する側の電力
電源端子、２２は第１、第２スイツチング素子
７，９の中点である。 In Fig. 4, 3', 4', 5' are each phase drive circuit 6',
Reference numeral 8' indicates first and second base parts, 7 and 9 are first and second switching elements, and 14 and 15 are first and second drive parts, each of which has a power terminal 14a and a power supply terminal 15a. These first and second drive sections 14 and 15 are connected to drive signal terminals such as base terminals of the first and second switching elements 7 and 9, respectively. 13 is a dedicated DC power supply section electrically insulated by magnetic coupling; 16, 1
7 is the first and second signal input terminals of the first and second drive sections 14 and 15; 18 is the first drive section 14;
A capacitor 19 connects the power terminal 14a and the midpoint 22 of the first and second switching elements connected in series, 19 a diode connecting the power terminal 14a and the DC power supply 13, 20 a rectifier connected to the first switching element 7. Similarly, reference numeral 21 indicates a power supply terminal on the side to which the second switching element 9 connects to the rectifier circuit 2 side, and reference numeral 22 indicates a power supply terminal on the side to which the second switching element 9 connects to the rectifier circuit 2 side. It is the midpoint.
以下にその動作について説明する。第２信号入
力端子１７がON信号を受信したら、第２ドライ
ブ部１５は、直流電源部１３により第２スイツチ
ング素子９をONする。第２スイツチング素子９
がON時には、中点２２と側の電力電源端子２
１はほぼ同電位となり、直流電源部１３よりダイ
オード１９を通して、第１ベース部６′のコンデ
ンサ１８が直流電源部１３の電圧まで充電され
る。第２スイツチング素子９がOFF時には中点
２２は側の電力電源端子２１の電位より高くな
るが、コンデンサ１８の電位は、ダイオード１９
が阻止する為に放電しない。ついで第１スイツチ
ング素子７がONになるとコンデンサ１８の−側
の電圧は整流回路２の＋側の電圧になるので、コ
ンデンサ１８の＋側の電圧は整流回路２の電圧と
直流電源部１３の電圧との和の電圧になる。この
和の電圧の波形は第１、第２のスイツチング素子
７，９の互いに逆位相の開閉動作により、前記和
の電圧と直流電源部１３の電圧とを振幅する短波
形である。この和の電圧で第１ドライブ部１４を
付勢するが、第１ドライブ部１４では必要に応じ
適宜第１スイツチング素子７の駆動特性に適合す
るように電圧波形を調整する。で、第１信号入力
端子１６がON信号を受信したら、前記コンデン
サの充電電圧により第１スイツチング素子７を効
率よくONする事となる。以上のように本実施例
によれば、インバータ装置の駆動回路において、
第２スイツチング素子９がON時には、直流電源
部１３により充電されるコンデンサ１８と、第２
スイツチング素子９がOFF時には前記コンデン
サの電圧が第２ドライブ部１５へ放電するのを阻
止するダイオード１９を設ける事により１個の直
流電源部で、直列に接続される２個のスイツチン
グ素子を効率よく交互にON−OFFする事が可能
となる。なおまた、第１ドライブ部１４での電力
消費が比較的少ない小型のインバータでは、多相
インバータであつても複数の第１スイツチング素
子７への直流電源が１つでもよい場合があるが、
その場合でも電位が第２ドライブ部１５への直流
電源とは異なるために共通のものとはできず、従
つて合計２個の直流電源が必要であつた。 The operation will be explained below. When the second signal input terminal 17 receives the ON signal, the second drive section 15 turns on the second switching element 9 using the DC power supply section 13 . Second switching element 9
When ON, the center point 22 and side power supply terminal 2
1 have almost the same potential, and the capacitor 18 of the first base part 6' is charged from the DC power supply part 13 through the diode 19 to the voltage of the DC power supply part 13. When the second switching element 9 is OFF, the midpoint 22 is higher than the potential of the side power supply terminal 21, but the potential of the capacitor 18 is higher than the potential of the diode 19.
does not discharge to prevent it. Then, when the first switching element 7 is turned on, the voltage on the negative side of the capacitor 18 becomes the voltage on the positive side of the rectifier circuit 2, so the voltage on the positive side of the capacitor 18 is equal to the voltage of the rectifier circuit 2 and the voltage of the DC power supply section 13. The voltage is the sum of The waveform of this sum voltage is a short waveform in which the sum voltage and the voltage of the DC power supply section 13 are amplified by the opening/closing operations of the first and second switching elements 7 and 9 in mutually opposite phases. This sum of voltages energizes the first drive section 14, and the first drive section 14 adjusts the voltage waveform as appropriate to match the drive characteristics of the first switching element 7 as necessary. When the first signal input terminal 16 receives the ON signal, the first switching element 7 is efficiently turned on by the charging voltage of the capacitor. As described above, according to this embodiment, in the drive circuit of the inverter device,
When the second switching element 9 is ON, the capacitor 18 charged by the DC power supply section 13 and the second
By providing a diode 19 that prevents the voltage of the capacitor from discharging to the second drive unit 15 when the switching element 9 is OFF, one DC power supply unit can efficiently operate two switching elements connected in series. It is possible to turn ON and OFF alternately. Furthermore, in the case of a small inverter in which the power consumption in the first drive unit 14 is relatively low, even if it is a multi-phase inverter, only one DC power supply may be sufficient for the plurality of first switching elements 7.
Even in that case, since the potential is different from that of the DC power supply to the second drive unit 15, it is impossible to use a common one, and therefore a total of two DC power supplies are required.
この場合でも、本発明によればエネルギーを供
給する直流電源を１個に集約し簡素化することが
可能である。 Even in this case, according to the present invention, it is possible to consolidate and simplify the DC power supplies that supply energy into one.
発明の効果
以上の説明からも明らかのように本発明は、第
１ドライブ部と２個直列に接続されるスイツチン
グ素子の中点とを接続するコンデンサと、第２ド
ライブ部に接続される直流電源部と前記コンデン
サとを接続するダイオードを設けるインバータ装
置の駆動回路を用いる事により、第１、第２スイ
ツチング素子の専用の直流電源部を共通とするの
で、小型化、低価格化が図れる。特に、多相イン
バータ装置においては、各スイツチング素子の専
用の磁気結合により電気的に絶縁した専用の直流
電源部が不要となり、共通の１個の直流電源部と
なるので、大幅な小型化、低価格化が可能とな
る。Effects of the Invention As is clear from the above description, the present invention provides a capacitor that connects the first drive section and the midpoint of two switching elements connected in series, and a DC power supply that is connected to the second drive section. By using a drive circuit for an inverter device that is provided with a diode connecting the switching element and the capacitor, the first and second switching elements can share a dedicated DC power supply, thereby making it possible to reduce the size and cost. In particular, in multi-phase inverter devices, dedicated magnetic coupling of each switching element eliminates the need for a dedicated electrically isolated DC power supply section, resulting in a single common DC power supply section, resulting in significant downsizing and low cost. Pricing becomes possible.
第１図は従来例のインバータ装置の基本構成
図、第２図は同インバータ装置の駆動回路図、第
３図は本発明の一実施例におけるインバータ装置
の駆動回路を採用したインバータ装置の基本回路
図、第４図は同駆動回路図である。
７，９……第１、第２スイツチング素子、１
４，１５……第１、第２ドライブ回路、１６，１
７……第１、第２信号入力端子、１３……直流電
源部、１８……コンデンサ、１９……ダイオー
ド。
FIG. 1 is a basic configuration diagram of a conventional inverter device, FIG. 2 is a drive circuit diagram of the same inverter device, and FIG. 3 is a basic circuit diagram of an inverter device adopting the drive circuit of an inverter device according to an embodiment of the present invention. FIG. 4 is a diagram of the drive circuit. 7, 9...first and second switching elements, 1
4,15...first and second drive circuits, 16,1
7...First and second signal input terminals, 13...DC power supply section, 18...Capacitor, 19...Diode.
Claims (1)
第２スイツチング素子とを直列に接続し、前記第
１スイツチング素子の駆動信号端子に第１ドライ
ブ部の一端を接続し、前記第１ドライブ部のパワ
ー端子をコンデンサを介して、前記第１・第２ス
イツチング素子間の中点に接続すると共に、前記
第１ドライブ部の他端を、周波数設定部からの信
号を受けて第１信号を発する制御回路部の端子に
接続し、前記第２スイツチング素子の駆動信号端
子に第２ドライブ部の一端を接続し、この第２ド
ライブ部の電源端子に直流電源部を接続すると共
に前記第２ドライブ部の他端を前記制御回路部の
第２信号を発する端子に接続し、前記直流電源部
をダイオードを介して前記第１ドライブ部のパワ
ー端子と前記コンデンサとの間に接続し、前記ダ
イオードを前記第２スイツチング素子が導通した
ときに前記コンデンサを充電する方向としたイン
バータ装置の駆動回路。1 A first switching element and a second switching element are connected in series between power supply terminals, one end of a first drive section is connected to a drive signal terminal of the first switching element, and the power of the first drive section is a control circuit that connects a terminal to a midpoint between the first and second switching elements via a capacitor, and connects the other end of the first drive section to a control circuit that receives a signal from a frequency setting section and generates a first signal; One end of the second drive section is connected to the drive signal terminal of the second switching element, and a DC power supply section is connected to the power supply terminal of the second drive section. The DC power source is connected between the power terminal of the first drive unit and the capacitor via a diode, and the diode is connected to the second signal generating terminal of the control circuit unit. A drive circuit for an inverter device in which the capacitor is charged when the switching element becomes conductive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58178550A JPS6070980A (en) | 1983-09-27 | 1983-09-27 | Drive circuit of inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58178550A JPS6070980A (en) | 1983-09-27 | 1983-09-27 | Drive circuit of inverter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6070980A JPS6070980A (en) | 1985-04-22 |
| JPH0584151B2 true JPH0584151B2 (en) | 1993-12-01 |
Family
ID=16050440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58178550A Granted JPS6070980A (en) | 1983-09-27 | 1983-09-27 | Drive circuit of inverter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6070980A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2746271B2 (en) * | 1988-04-25 | 1998-05-06 | 松下電工株式会社 | Inverter device |
| FR2639489B1 (en) * | 1988-11-22 | 1991-02-15 | Telemecanique | POWER SWITCHING DEVICE, IN PARTICULAR FOR FREQUENCY CONVERTERS |
| JP5532192B2 (en) * | 2008-01-24 | 2014-06-25 | 独立行政法人産業技術総合研究所 | Power converter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57162970A (en) * | 1981-04-01 | 1982-10-06 | Sanyo Electric Co Ltd | Delay circuit |
-
1983
- 1983-09-27 JP JP58178550A patent/JPS6070980A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6070980A (en) | 1985-04-22 |
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