CN112350553B - Silicon controlled controller for frequency converter - Google Patents
Silicon controlled controller for frequency converter Download PDFInfo
- Publication number
- CN112350553B CN112350553B CN202011395546.3A CN202011395546A CN112350553B CN 112350553 B CN112350553 B CN 112350553B CN 202011395546 A CN202011395546 A CN 202011395546A CN 112350553 B CN112350553 B CN 112350553B
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- pulse
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 20
- 239000010703 silicon Substances 0.000 title claims abstract description 20
- 238000002955 isolation Methods 0.000 claims abstract description 34
- 239000003990 capacitor Substances 0.000 claims description 35
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
- H02M1/092—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices the control signals being transmitted optically
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Power Conversion In General (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses a silicon controlled controller for a frequency converter, which comprises an oscillator circuit, a MOSFET driving circuit and a pulse isolation trigger circuit which are sequentially connected, wherein the MOSFET driving circuit is respectively connected with a photoelectric isolation circuit and a power supply circuit, and the pulse isolation trigger circuit is connected with a silicon controlled electronic switch. The maximum level of the output power exceeds 100kW, and the invention has the characteristics of high control speed, high efficiency, low cost, no spark, no noise and the like, is stable and reliable in control, realizes the on-off control of the intermediate frequency thyristor electronic switch of the special frequency converter and the load motor, and meets the control requirement of the on-off of the output intermediate frequency voltage of the special frequency converter.
Description
Technical Field
The invention belongs to the field of frequency converter control, and particularly relates to a silicon controlled rectifier controller for a frequency converter.
Background
The special low-power frequency converter generally adopts a contactor to control the connection and disconnection of the special low-power frequency converter and a load motor, and the contactor has the characteristics of small volume, simple control mode and the like, so that the requirement of load switching can be met. With the improvement of the power level of the special frequency converter, the output load current of the special frequency converter is increased, and the traditional mechanical contactor can generate very large current, namely closing inrush current, due to the time randomness of load switching when switching loads. The switching-on inrush current not only affects the service life of the contactor, but also causes impact on the frequency converter and the load motor, and can also affect the normal operation of other equipment on the system.
The silicon controlled electronic switch has the characteristics of quick response, capability of realizing on and off in microsecond level, no contact operation, no spark, no noise, high efficiency, low cost and the like, so that the silicon controlled electronic switch is widely applied in the industrial field, and the corresponding controller is mature. However, the commonly used thyristor controller in the market is generally applied to the 50Hz power frequency occasion, and can not meet the control requirement of on-off of the intermediate frequency voltage output by the special frequency converter, and based on the control requirement, the thyristor controller of the special frequency converter is needed.
Disclosure of Invention
The invention provides a controllable silicon controller for a frequency converter, which aims to overcome the defect that the controllable silicon controller in the prior art cannot meet the control requirement of on-off of intermediate frequency voltage.
The invention is realized by the following technical scheme:
a controllable silicon controller for a frequency converter comprises an oscillator circuit, a MOSFET driving circuit and a pulse isolation trigger circuit which are sequentially connected, wherein the MOSFET driving circuit is respectively connected with a photoelectric isolation circuit and a power supply circuit, and the pulse isolation trigger circuit is connected with a controllable silicon electronic switch.
In the above technical solution, the oscillator circuit includes a trigger, a resistor R5 and a capacitor C5 connected to each other.
In the above technical solution, the oscillator circuit generates a pulse signal of 20 kHz.
In the above technical solution, the schmitt trigger is a schmitt trigger 4584.
In the above technical solution, the MOSFET driving circuit includes a driver and two MOSFET tubes respectively connected to the driver.
In the above technical scheme, the MOSFET driving circuit changes the pulse signal generated by the oscillator circuit into a push-pull signal, and drives the two MOSFET tubes to conduct in turn.
In the above technical solution, the model of the driver is IR2110.
In the above technical scheme, the pulse isolation trigger circuit includes three primary series-connected pulse transformer sets T1 and T2, T3 and T4, and T5 and T6, and the three pulse transformer sets are connected in parallel; each pulse transformer is connected with a corresponding rectifier bridge.
In the above technical scheme, the pulse isolation trigger circuit couples and rectifies the signal output by the MOSFET driving circuit through the pulse transformer and simultaneously triggers six thyristors, thereby controlling the conduction of the thyristor electronic switch.
In the above technical scheme, the power supply circuit comprises a three-phase bridge rectifier, an electrolytic capacitor and a three-terminal voltage regulator tube, wherein the three-phase bridge rectifier consists of diodes D5-D7 and D8-D10.
The beneficial effects of the invention are as follows:
The invention provides a controllable silicon controller for a special frequency converter, which meets the driving requirement of a controllable silicon electronic switch of the medium-frequency voltage of the special frequency converter, can be applied to the special frequency converter with various power levels, and has the maximum level of output power exceeding 100kW; the method has the characteristics of high control speed, high efficiency, low cost, no spark, no noise and the like, is stable and reliable in control, realizes the on-off control of the medium frequency thyristor electronic switch of the special frequency converter and the load motor, and meets the control requirement of the on-off of the medium frequency voltage output by the special frequency converter.
Drawings
FIG. 1 is a schematic diagram of a thyristor controller for a frequency converter according to the present invention applied to a dedicated frequency converter;
fig. 2 is a circuit diagram of a thyristor controller for a frequency converter according to the present invention.
Wherein:
1. Oscillator circuit 2 MOSFET drive circuit
3. Pulse isolation trigger circuit 4 photoelectric isolation circuit
5. Silicon controlled electronic switch of power supply circuit 6
7. The special frequency converter 8 loads the motor.
Other relevant drawings may be made by those of ordinary skill in the art from the above figures without undue burden.
Detailed Description
In order to make the technical scheme of the invention better understood by the person skilled in the art, the technical scheme of the invention for the thyristor controller of the frequency converter is further described below by a specific embodiment in combination with the attached drawings of the specification.
As shown in fig. 1 and 2, a thyristor controller of a frequency converter comprises an oscillator circuit 1, a MOSFET driving circuit 2 and a pulse isolation trigger circuit 3 which are sequentially connected, wherein the MOSFET driving circuit 2 is respectively connected with a photoelectric isolation circuit 4 and a power supply circuit 5, and the pulse isolation trigger circuit 3 is connected with a thyristor electronic switch 6.
The oscillator circuit 1, the MOSFET driving circuit 2 and the pulse isolation trigger circuit 3 form a core circuit of the silicon controlled controller.
The oscillator circuit 1 is an oscillator circuit composed of a schmitt trigger 4584, a resistor and a capacitor, and generates a pulse signal of about 20 kHz.
The specific circuit connection of the oscillator circuit 1 is as follows:
The No. 1 pin of schmidt trigger U3 is connected with one end of resistance R5, one end of electric capacity C5, and resistance R5's the other end is connected with U3's No. 2 pin, no. 3 pin, and electric capacity C5's the other end is connected with U3's No. 4 pin, no. 5 pin. The pin 6 of the U3 is connected with the pin 9 of the U3 and the pin 10 of the driver U4 in the MOSFET driving circuit 2, and the pin 8 of the Schmidt trigger U3 is connected with the pin 12 of the driver U4 in the MOSFET driving circuit 2.
The MOSFET driving circuit 2 adopts IR2110 as a driver, changes a pulse signal generated by an oscillator circuit into a push-pull signal, and drives two MOSFET tubes to conduct alternately.
The specific circuit connection of the MOSFET driving circuit 2 is as follows:
One end of a capacitor C3 is connected with pin 9 of the driver U4 and +15V, and the other end of the capacitor C3 is connected with pin 13 of the driver U4 and GND;
The anode of the diode D3 is connected with the anode of the electrolytic capacitor C2, one end of the capacitor C4, the pin 3 of the driver U4 and +15; the cathode of the diode D3 is connected with one end of the C1 and a pin 6 of the driver U4; the other end of the capacitor C1 is connected with the No. 5 pin of the driver U4, the source electrode of the MOSFET U1, the drain electrode of the MOSFET U2, the No. 2 pin of the pulse transformer T4 and the No. 2 pin of the pulse transformer T6 in the pulse isolation trigger circuit 3, and the other end of the capacitor C4 is connected with the cathode of the electrolytic capacitor C2, the No. 2 pin of the driver U4, the source electrode of the MOSFET U2 and GND. One end of the resistor R1 is connected with the cathode of the diode D1 and the pin 7 of the driver U4, and the other end of the resistor R1 is connected with the anode of the diode D1 and the grid electrode of the MOSFET U1. One end of the resistor R2 is connected with the cathode of the diode D2 and the No. 1 pin of the driver U4, and the other end of the resistor R2 is connected with the anode of the diode D2 and the grid electrode of the MOSFET U2.
The pulse isolation triggering circuit 3 is used for coupling and rectifying signals output by the MOSFET driving circuit 2 through a pulse transformer and triggering six thyristors at the same time, so that the conduction of the thyristor electronic switch 6 is controlled, and the connection between the special frequency converter 7 and the load motor 8 is realized.
The specific circuit connection of the pulse isolation trigger circuit 3 is as follows:
The No. 2 pin of the pulse transformer T1 is connected with the No.1 pin of the pulse transformer T2, the No. 2 pin of the pulse transformer T3 is connected with the No.1 pin of the pulse transformer T4, and the No. 2 pin of the pulse transformer T5 is connected with the No.1 pin of the pulse transformer T6.
The pin 3 of the pulse transformer T1 is connected with the pin 1 of the rectifier bridge B1, and the pin 4 of the pulse transformer T1 is connected with the pin 2 of the rectifier bridge B1. One end of a resistor R6 is connected with one end of a resistor R7 and a pin 3 of a rectifier bridge B1, the other end of the resistor R6 is connected with a cathode of a diode D11 and a pin 1 of a wiring terminal CN3, the other end of the resistor R7 is connected with an anode of the diode D11 and a positive electrode of an electrolytic capacitor C8, and a negative electrode of the electrolytic capacitor C8 is connected with a pin 4 of the rectifier bridge B1 and a pin 2 of the wiring terminal CN 3.
The pin 3 of the pulse transformer T2 is connected with the pin 1 of the rectifier bridge B2, and the pin 4 of the pulse transformer T2 is connected with the pin 2 of the rectifier bridge B2. One end of a resistor R8 is connected with one end of a resistor R9 and a pin 3 of a rectifier bridge B2, the other end of the resistor R8 is connected with a cathode of a diode D12 and a pin 4 of a wiring terminal CN3, the other end of the resistor R9 is connected with an anode of the diode D12 and a positive electrode of an electrolytic capacitor C9, and a negative electrode of the electrolytic capacitor C9 is connected with a pin 4 of the rectifier bridge B2 and a pin 5 of the wiring terminal CN 3.
The pin 3 of the pulse transformer T3 is connected with the pin 1 of the rectifier bridge B3, and the pin 4 of the pulse transformer T3 is connected with the pin 2 of the rectifier bridge B3. One end of a resistor R10 is connected with one end of a resistor R11 and a pin 3 of a rectifier bridge B3, the other end of the resistor R10 is connected with a cathode of a diode D13 and a pin 1 of a wiring terminal CN4, the other end of the resistor R11 is connected with an anode of the diode D13 and a positive electrode of an electrolytic capacitor C10, and a negative electrode of the electrolytic capacitor C10 is connected with a pin 4 of the rectifier bridge B3 and a pin 2 of the wiring terminal CN 4.
The pin 3 of the pulse transformer T4 is connected with the pin 1 of the rectifier bridge B4, and the pin 4 of the pulse transformer T4 is connected with the pin 2 of the rectifier bridge B4. One end of a resistor R12 is connected with one end of a resistor R13 and a pin 3 of a rectifier bridge B4, the other end of the resistor R12 is connected with a cathode of a diode D14 and a pin 4 of a wiring terminal CN4, the other end of the resistor R13 is connected with an anode of the diode D14 and a positive electrode of an electrolytic capacitor C11, and a negative electrode of the electrolytic capacitor C11 is connected with a pin 4 of the rectifier bridge B4 and a pin 5 of the wiring terminal CN 4.
The pin 3 of the pulse transformer T5 is connected with the pin 1 of the rectifier bridge B5, and the pin 4 of the pulse transformer T5 is connected with the pin 2 of the rectifier bridge B5. One end of a resistor R14 is connected with one end of a resistor R15 and a pin 3 of a rectifier bridge B5, the other end of the resistor R14 is connected with a cathode of a diode D15 and a pin 1 of a wiring terminal CN5, the other end of the resistor R15 is connected with an anode of the diode D15 and a positive electrode of an electrolytic capacitor C12, and a negative electrode of the electrolytic capacitor C12 is connected with a pin 4 of the rectifier bridge B5 and a pin 2 of the wiring terminal CN 5.
The pin 3 of the pulse transformer T6 is connected with the pin 1 of the rectifier bridge B6, and the pin 4 of the pulse transformer T6 is connected with the pin 2 of the rectifier bridge B6. One end of a resistor R16 is connected with one end of a resistor R17 and a pin 3 of a rectifier bridge B6, the other end of the resistor R16 is connected with a cathode of a diode D16 and a pin 4 of a wiring terminal CN5, the other end of the resistor R17 is connected with an anode of the diode D16 and a positive electrode of an electrolytic capacitor C13, and a negative electrode of the electrolytic capacitor C13 is connected with a pin 4 of the rectifier bridge B6 and a pin 5 of the wiring terminal CN 5.
The photoelectric isolation circuit 4 realizes the electric isolation of the pulse isolation trigger circuit 3 from external control signals.
The specific circuit connection of the photoelectric isolation circuit 4 is as follows:
The pin 1 of the wiring terminal CN1 is connected with the pin 2 of the optical coupler U5, the pin 3 of the wiring terminal CN1 is connected with one end of the resistor R3, and the pin 1 of the other end of the resistor R3 is connected with the pin 1 of the optical coupler U5; one end of the resistor R4 is connected with +15V, the other end of the resistor R4 is respectively connected with a No. 4 pin of the optocoupler U5 and a No. 11 pin of the driver U4 in the MOSFET driving circuit 2, and a No. 3 pin of the optocoupler U5 is connected with GND.
The power supply circuit 5 supplies IMOSFET the power necessary for the operation of the driver circuit 2.
The specific circuit connection of the power supply circuit 5 is as follows:
The pin 4 of the connecting terminal CN2 is connected with the anode of the diode D5 and the cathode of the diode D8, the pin 3 of the connecting terminal CN2 is connected with the anode of the diode D6 and the cathode of the diode D9, and the pin 2 of the connecting terminal CN2 is connected with the anode of the diode D7 and the anode of the diode D10.
The cathode of the diode D5, the cathode of the diode D6, the cathode of the diode D7 and the anode of the electrolytic capacitor C6 are connected with the drain electrode of the MOSFET U1 in the MOSFET driving circuit 2;
The anode of the diode D8, the anode of the diode D9, the anode of the diode D10, the cathode of the electrolytic capacitor C7, the cathode of the electrolytic capacitor C14 and the pin 2 of the three-terminal voltage regulator IC1 are connected with one end of the capacitor C15, and the other end of the capacitor C15 is connected with the pin 3 of the three-terminal voltage regulator IC1, the anode of the capacitor C14 and +15V; the cathode of the electrolytic capacitor C6, the anode of the electrolytic capacitor C7 and the pin 1 of the three-terminal voltage stabilizing tube IC1 are connected with the pin 1 of the pulse transformer T1, the pin 1 of the pulse transformer T3 and the pin 1 of the pulse transformer T5 in the pulse isolation trigger circuit 3.
The working principle of the invention is as follows:
The core part of the controlled silicon controller consists of an oscillator circuit, a MOSFET driver circuit and a pulse isolation trigger circuit. An oscillator circuit consisting of a schmitt trigger 4584, a resistor and a capacitor is used to generate a pulse signal of about 20 kHz. The MOSFET driver circuit adopts IR2110 as a driver, changes the pulse signal generated by the oscillator circuit into a push-pull signal, and drives two MOSFET tubes to conduct alternately. And then the six thyristors are triggered simultaneously after the pulse isolation trigger circuit is coupled and rectified by the pulse transformer, so that the conduction of the thyristor electronic switch is controlled, and the connection between the special frequency converter and the load motor is realized.
The working process of the invention comprises the following steps:
the power supply circuit provides working power for the MOSFET driver circuit, and the photoelectric isolation circuit realizes the isolation of the pulse isolation trigger circuit and the external control circuit. The oscillator circuit generates a pulse signal of about 20kHz, the MOSFET driver circuit amplifies the power of the pulse signal of the oscillator circuit, then six paths of driving signals are generated through the pulse isolation trigger circuit, and then the thyristor electronic switch is driven and controlled, so that the on-off control of the special frequency converter and the load motor is realized.
The silicon controlled controller of the invention has been applied in dedicated frequency converters of various power classes, the maximum class of output power exceeding 100kW. The silicon controlled controller has the characteristics of high control speed, high efficiency, low cost, no spark, no noise and the like, is stable and reliable in control, realizes the on-off control of the medium frequency silicon controlled electronic switch of the special frequency converter and the load motor, and meets the control requirement of the on-off of the medium frequency voltage output by the special frequency converter.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The applicant declares that the above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be apparent to those skilled in the art that any changes or substitutions that are easily conceivable within the technical scope of the present invention disclosed by the present invention fall within the scope of the present invention and the disclosure.
Claims (7)
1. A thyristor controller for a frequency converter, characterized by: the device comprises an oscillator circuit (1), a MOSFET driving circuit (2) and a pulse isolation trigger circuit (3) which are sequentially connected, wherein the MOSFET driving circuit (2) is respectively connected with a photoelectric isolation circuit (4) and a power supply circuit (5), and the pulse isolation trigger circuit (3) is connected with a silicon controlled electronic switch (6); the oscillator circuit (1) comprises a trigger, a resistor R5 and a capacitor C5 which are connected with each other; the specific circuit connection of the oscillator circuit (1) is as follows: the No. 1 pin of the Schmitt trigger U3 is connected with one end of a resistor R5 and one end of a capacitor C5, the other end of the resistor R5 is connected with the No. 2 pin of the Schmitt trigger U3 and the No. 3 pin of the Schmitt trigger U3, the other end of the capacitor C5 is connected with the No. 4 pin of the Schmitt trigger U3 and the No. 5 pin of the Schmitt trigger U3, the No. 6 pin of the Schmitt trigger U3 is connected with the No. 9 pin of the Schmitt trigger U3 and the No. 10 pin of a driver U4 in the MOSFE driving circuit, and the No. 8 pin of the Schmitt trigger U3 is connected with the No. 12 pin of the driver U4 in the MOSFET driving circuit 2; the pulse isolation trigger circuit (3) comprises three groups of primary pulse transformer groups T1 and T2, T3 and T4 and T5 and T6 which are connected in series, and the three groups of pulse transformer groups are connected in parallel; each pulse transformer is connected with a corresponding rectifier bridge respectively; the specific circuit connection of the photoelectric isolation circuit is as follows: the pin 1 of the wiring terminal CN1 is connected with the pin 2 of the optical coupler U5, the pin 3 of the wiring terminal CN1 is connected with one end of the resistor R3, and the pin 1 of the other end of the resistor R3 is connected with the pin 1 of the optical coupler U5; one end of the resistor R4 is connected with +15V, the other end of the resistor R4 is respectively connected with a pin No. 4 of the optocoupler U5 and a pin No. 11 of the driver U4 in the MOSFET driving circuit 2, and a pin No. 3 of the optocoupler U5 is connected with GND; the power supply circuit (5) comprises a three-phase bridge rectifier, an electrolytic capacitor and a three-terminal voltage stabilizing tube, wherein the three-phase bridge rectifier consists of a diode D5, a diode D6, a diode D7, a diode D8, a diode D9 and a diode D10.
2. The thyristor controller for a frequency converter according to claim 1, wherein: the oscillator circuit (1) generates a 20kHz pulse signal.
3. The thyristor controller for a frequency converter according to claim 1, wherein: the schmitt trigger is of the type schmitt trigger 4584.
4. The thyristor controller for a frequency converter according to claim 1, wherein: the MOSFET driving circuit (2) comprises a driver and two MOSFET tubes respectively connected with the driver.
5. The thyristor controller for a frequency converter according to claim 4, wherein: the MOSFET driving circuit (2) changes a pulse signal generated by the oscillator circuit (1) into a push-pull signal, and drives the two MOSFET tubes to conduct in turn.
6. The thyristor controller for a frequency converter according to claim 4, wherein: the model of the driver is IR2110.
7. The thyristor controller for a frequency converter according to claim 1, wherein: the pulse isolation trigger circuit (3) is used for coupling and rectifying signals output by the MOSFET drive circuit (2) through the pulse transformer and then triggering six thyristors at the same time, so that the conduction of the thyristor electronic switch (6) is controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011395546.3A CN112350553B (en) | 2020-12-03 | 2020-12-03 | Silicon controlled controller for frequency converter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011395546.3A CN112350553B (en) | 2020-12-03 | 2020-12-03 | Silicon controlled controller for frequency converter |
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| CN112350553A CN112350553A (en) | 2021-02-09 |
| CN112350553B true CN112350553B (en) | 2024-07-09 |
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| CN202385073U (en) * | 2011-12-26 | 2012-08-15 | 核工业理化工程研究院 | High-power silicon-controlled switch controller |
| CN213693455U (en) * | 2020-12-03 | 2021-07-13 | 核工业理化工程研究院 | Silicon controlled rectifier controller for frequency converter |
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| GB919796A (en) * | 1960-11-09 | 1963-02-27 | Ici Ltd | Automatic control of vibrating drives |
| GB1028090A (en) * | 1963-04-02 | 1966-05-04 | Telephone Mfg Co Ltd | Improvements in or relating to electronic switches |
| FR1530539A (en) * | 1967-05-16 | 1968-06-28 | Thyristor inverter with polyphase excitation and distributed power supply | |
| US4554512A (en) * | 1984-08-27 | 1985-11-19 | Aerotech, Inc. | Switching amplifier with MOSFET driver circuit |
| FI75071C (en) * | 1986-02-13 | 1988-04-11 | Salora Oy | Connection for a resonant type DC source. |
| US5051609A (en) * | 1990-10-02 | 1991-09-24 | Teledyne Inet | Simplified driver circuit for solid-state power switches |
| DE4102106C2 (en) * | 1991-01-25 | 1994-01-13 | Honeywell Regelsysteme Gmbh | Level sensor |
| SG68587A1 (en) * | 1996-07-27 | 1999-11-16 | Singapore Productivity And Sta | An electronic ballast circuit |
| CN1307020C (en) * | 2004-12-14 | 2007-03-28 | 天力管件有限公司 | Convertion portable copper pipe hard soldering machine |
| CN101277090A (en) * | 2007-03-28 | 2008-10-01 | 陈国弟 | Insulation triggering circuit for vehicle magnetoelectric generator controlled rectifier |
| CN202406006U (en) * | 2011-12-30 | 2012-08-29 | 长江三峡能事达电气股份有限公司 | Novel high-power high-voltage controllable silicon pulse driver |
| CN204669210U (en) * | 2015-06-24 | 2015-09-23 | 南京科技职业学院 | A kind of pulse driving circuit of electrical arc spraying power source |
| CN206481243U (en) * | 2016-12-21 | 2017-09-08 | 浙江中自机电控制技术有限公司 | A kind of switch reluctance machine drive silicon controlled control circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202385073U (en) * | 2011-12-26 | 2012-08-15 | 核工业理化工程研究院 | High-power silicon-controlled switch controller |
| CN213693455U (en) * | 2020-12-03 | 2021-07-13 | 核工业理化工程研究院 | Silicon controlled rectifier controller for frequency converter |
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| CN112350553A (en) | 2021-02-09 |
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