CN203278743U - Motor frequency conversion controller - Google Patents
Motor frequency conversion controller Download PDFInfo
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- CN203278743U CN203278743U CN2013202670901U CN201320267090U CN203278743U CN 203278743 U CN203278743 U CN 203278743U CN 2013202670901 U CN2013202670901 U CN 2013202670901U CN 201320267090 U CN201320267090 U CN 201320267090U CN 203278743 U CN203278743 U CN 203278743U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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Abstract
The utility model provides a motor frequency conversion controller. The controller comprises a power supply module, an optoelectronic isolation module, a control module and a two-phase three-bridge arm inverter module. The power supply module is connected with the control module. The control module is connected with the two-phase three-bridge arm inverter module. The two-phase three-bridge arm inverter module is connected with an external one-way asynchronous motor. The control module is further connected with the optoelectronic isolation module. The optoelectronic isolation module is provided with input ends of impulse signals, direction signals and enabling signals. The controller allows a frequency conversion controlling method to replace the conventional a silicon control conduction angle voltage regulating control method, and allows the two-phase asynchronous motor to replace the single-phase asynchronous motor, regards the starting winding as a single-phase operation winding, allows the two-phase motor to be subjected to two-phase and three-bridge arm SVPWM in combination with V/F frequency conversion control, thereby improving control of the single-phase asynchronous motor and then meeting the requirements that horizontal woven piece traction cannot be influenced by the external power supply.
Description
Technical field
The utility model relates to the Weaving device control field, refers in particular to a kind of motor frequency conversion controller that computer flat knitting machine plays end lifting motor and roller motor that is exclusively used in.
Background technology
At present, the part tractive of knitting of computer flat knitting machine needs all to use that roller motor and end lifting motor participate in completing, roller motor and an end lifting motor are a kind of single-phase asynchronous torque motor actually, require motor to keep constant moment of force in the process of knitting the part tractive of computer flat knitting machine.And the control method of the torque controller of traditional roller motor, an end lifting motor is the angle of flow by the SCR control AC power, completes by pressure regulation.Yet, the reason such as unstable or AC power inferior quality due to line voltage, the method that adopts traditional angle of flow to control pressure regulation is difficult to guarantee the constant moment of force traction, namely is difficult to the level and smooth output voltage of adjusting.In a single day the motor frequency conversion controller slightly high at the average effective voltage of controlling output, will cause drawing fabric fast, easy-to-draw bad fabric; And if average effective voltage is slightly low, draw fabric partially slow, easily cause fabric stagnant long-pending.Thereby existing motor frequency conversion controller in use often needs manually to go to adjust, and need to often readjust along with the variation of external voltage, brings inconvenience for the user of computer flat knitting machine.
The utility model content
The purpose of this utility model is to have overcome defects, provides a kind of and can carry out to playing end lifting motor and roller motor the motor frequency conversion controller of variable frequency control.
The purpose of this utility model is achieved in that a kind of motor frequency conversion controller, and it comprises power module, photoelectric isolation module, control module and two-phase three-leg inverter module;
Described power module is used to control module and two-phase three-leg inverter module for power supply;
Described photoelectric isolation module is used for the upper control device is transmitted delivering to control module after pulse signal, direction signal and enable signal are isolated;
Described control module is used for carrying out the V/F variable frequency control according to the instruction of the described pulse signal that receives from described photoelectric isolation module, direction signal, enable signal, and output 6 tunnel space vector pulse width modulation signals are to two-phase three-leg inverter module;
Described two-phase three-leg inverter module is used for direct current is converted to alternating current;
Described power module link control module, control module connect two-phase three-leg inverter module, and two-phase three-leg inverter module output three phase supply is connected to outside unidirectional asynchronous machine; Described control module also connects photoelectric isolation module, and photoelectric isolation module is provided with pulse signal, direction signal, enable signal input;
In above-mentioned, described two-phase three-leg inverter module comprises intelligent power driver module unit;
In above-mentioned, described two-phase three-leg inverter module comprises protected location, full-bridge or half bridge drive unit and 6 road power switchs; Described control module output connects full-bridge or half bridge drive unit, and full-bridge or half bridge drive unit connect respectively 6 road power switchs, and power switch output connects full-bridge or half bridge drive unit by protected location; Described full-bridge or half bridge drive unit have also been exported the overcurrent protection signal and have been connected to control module; Full-bridge or half bridge drive unit receive and drive respectively closing/closing of 6 road power switchs from output pulse width modulation signal after 6 tunnel space vector pulse width modulation signals of control module;
In above-mentioned, described 6 road power switchs comprise 6 insulated gate bipolar transistors; Described 6 insulated gate bipolar transistors are divided into three groups in twos; The base stage of two insulated gate bipolar transistors in every group connects respectively the pulse-width modulation output of full-bridge or half bridge drive unit, the collector electrode of an insulated gate bipolar transistor connects the positive pole of power module, the collector electrode that emitter connects another insulated gate bipolar transistor, the emitter of another insulated gate bipolar transistor and connects the ground of power module, and the connecting place of two insulated gate bipolar transistors in every group leads to a power supply mutually;
In above-mentioned, described 6 road power switchs comprise 6 metal-oxide-semiconductors; Described 6 metal-oxide-semiconductors are divided into three groups in twos; The grid of two metal-oxide-semiconductors in every group connects respectively the pulse-width modulation output of full-bridge or half bridge drive unit, positive pole, the drain electrode that the source electrode of a metal-oxide-semiconductor connects power module connects the source electrode of another metal-oxide-semiconductor, the drain electrode of another metal-oxide-semiconductor connects the ground of power module, and the connecting place of two metal-oxide-semiconductors in every group leads to a power supply mutually.
In above-mentioned, described power module comprises AC power filter unit, switching power supply and the rectification filtering unit that connects successively;
In above-mentioned, described control module comprises single-chip microcomputer or the digital signal processor with 6 road PWM peripheral hardwares.
Than common electric machine controller, the beneficial effects of the utility model are by method for controlling frequency conversion being replaced traditional thyristor operating angle Regulation Control method, and single-phase asynchronous motor is considered as two-phase induction motor, to start winding is considered as one and moves mutually winding, two-phase induction motor is carried out two-phase three brachium pontis SVPWM in conjunction with the variable frequency control of V/F and then the perfect control of single-phase asynchronous motor, knit to satisfy straight-bar machines the requirement that the part tractive is not affected by extraneous power supply.
Description of drawings
Below in conjunction with accompanying drawing in detail concrete structure of the present utility model is described in detail
Fig. 1 is integrated circuit module map of the present utility model;
Fig. 2 is power drive schematic diagram of the present utility model;
Fig. 3 is unidirectional asynchronous machine traditional wired mode;
Fig. 4 is the unidirectional asynchronous machine two-phase three brachium pontis frequency conversion modes of connection of the present utility model;
Fig. 5 is two-phase three-leg inverter schematic diagram of the present utility model;
Fig. 6 is two-phase three-leg inverter basic voltage vectors figure of the present utility model;
Fig. 7 is the corresponding PWM oscillogram 1 that the utility model adopts symmetric form PWM mode to generate in different sectors;
Fig. 8 is the corresponding PWM oscillogram 2 that the utility model adopts symmetric form PWM mode to generate in different sectors.
Embodiment
By describing technology contents of the present utility model, structural feature in detail, being realized purpose and effect, below in conjunction with execution mode and coordinate accompanying drawing to be explained in detail.
See also Fig. 1, a kind of motor frequency conversion controller of present embodiment, it comprises power module, photoelectric isolation module, control module and two-phase three-leg inverter module.Wherein,
Power module is used to control module and two-phase three-leg inverter module for power supply; Comprise AC power filter unit, switching power supply and rectification filtering unit as a kind of embodiment power module, AC power filter unit, switching power supply are connected with rectification filtering unit and are connected, be converted to direct current thereby the alternating current of inputting is first carried out filtering by switching power supply, then carry out being used for whole product systems power supply after rectifying and wave-filtering.
Photoelectric isolation module is used for the upper control device is transmitted delivering to control module after pulse signal, direction signal and enable signal are isolated;
Control module is used for carrying out the V/F variable frequency control according to the instruction of the described pulse signal that receives from described photoelectric isolation module, direction signal, enable signal, and output 6 tunnel space vector pulse width modulation signals are to two-phase three-leg inverter module.
As a kind of embodiment, control module adopts with 6 road PWM peripheral hardwares 16 or 32 MCU or DSP, output 6 road SVPWM.
Two-phase three-leg inverter module is used for direct current is converted to alternating current;
Above-mentioned power module link control module, control module connect two-phase three-leg inverter module, and two-phase three-leg inverter module output three phase supply is connected to outside unidirectional asynchronous machine; Described control module also connects photoelectric isolation module, and photoelectric isolation module is provided with pulse signal, direction signal, enable signal input.
As a kind of embodiment, above-mentioned two-phase three-leg inverter module comprises intelligent power driver module (IPM driving) unit.
Referring to Fig. 2, as another kind of embodiment, above-mentioned two-phase three-leg inverter module also can further adopt the circuit that comprises that protected location, full-bridge or half bridge drive unit and 6 road power switchs form.Wherein, control module output connects full-bridge or half bridge drive unit, and full-bridge or half bridge drive unit connect respectively 6 road power switchs, and power switch output connects full-bridge or half bridge drive unit by protected location; Described full-bridge or half bridge drive unit have also been exported the overcurrent protection signal and have been connected to control module; Full-bridge or half bridge drive unit receive and drive respectively closing/closing of 6 road power switchs from output pulse width modulation signal after 6 tunnel space vector pulse width modulation signals of control module.
6 road power switchs in above-described embodiment can adopt 6 insulated gate bipolar transistors or 6 metal-oxide-semiconductors.6 insulated gate bipolar transistors or metal-oxide-semiconductor are divided into three groups in twos.
For insulated gate bipolar transistor, the base stage of two insulated gate bipolar transistors in every group connects respectively the pulse-width modulation output of full-bridge or half bridge drive unit, the collector electrode of an insulated gate bipolar transistor connects the positive pole of power module, the collector electrode that emitter connects another insulated gate bipolar transistor, the emitter of another insulated gate bipolar transistor and connects the ground of power module, and the connecting place of two insulated gate bipolar transistors in every group leads to a power supply mutually.
For metal-oxide-semiconductor, the grid of two metal-oxide-semiconductors in every group connects respectively the pulse-width modulation output of full-bridge or half bridge drive unit, positive pole, the drain electrode that the source electrode of a metal-oxide-semiconductor connects power module connects the source electrode of another metal-oxide-semiconductor, the drain electrode of another metal-oxide-semiconductor connects the ground of power module, and the connecting place of two metal-oxide-semiconductors in every group leads to a power supply mutually.
be unidirectional asynchronous machine traditional wired mode as Fig. 3, be connected by a start-up capacitance between the startup winding of traditional unidirectional asynchronous machine and operation winding, and power for the three-phase output that coordinates two-phase three-leg inverter module in the utility model, lifting motor at the bottom of single-phase and roller motor are considered as two-phase induction motor, referring to Fig. 4, the startup winding is considered as a three-phase output that moves mutually winding access two-phase three-leg inverter module powers, thereby further carry out two-phase three brachium pontis SVPWM in conjunction with the variable frequency control of V/F, method for controlling frequency conversion is replaced traditional thyristor operating angle Regulation Control method, improved the control of end lifting motor and roller motor, knit to satisfy straight-bar machines the requirement that the part tractive is not affected by extraneous power supply.In addition, the motor frequency conversion controller by adopting this this patent has also been cancelled external starting capacitance and the original positive and reverse rotation control circuit of motor except improving performance.
Motor frequency conversion controller integral body of the present utility model is an independently special module, and it can receive the pulse from the upper control device, direction, enable command signal.The corresponding output frequency of the corresponding frequency converter of the frequency of pulse wherein.The fault-signal of upper control device No. one frequency converter also can be provided in addition, as required.
This product variable frequency control thinking:
The topological structure of two-phase three-leg inverter module is the two-phase three-leg inverter, sees Fig. 5, represents the state of six switching tubes with q1, q2, q3, q4, q5, q6.Because of q1 and q2, q3 and q4, q5 and q6 on off state are complementary, so can represent with (q1q3q5) for the on off state of inverter.Thereby eight kinds of switch combination states are arranged.That is:
(000), (100), (110), (010), (011), (001), (101), (111), corresponding 8 the basic voltage vectors V0 of these 8 kinds of assembled state, V1, V2, V3, V4, V5, V6, V7, wherein V0, V7 represents zero vector, V1, V2, V3, V4, V5, V6 are non-zero vector, can get basic voltage vectors V1, V3 in conjunction with Fig. 1, V4, the V6 amplitude is Ud, V2, the V5 amplitude is √ 2Ud, thereby gets two-phase three brachium pontis basic voltage vectors figure such as Fig. 6.
In the SVPWM modulation, reference voltage vector Vout rotates take the origin of coordinates as round dot and forms round vector locus (because straight-bar machines is identical with single-phase asynchronous motor major-minor umber of turn).Reference voltage vector Vout can be synthetic by two basic voltage vectors that are adjacent and zero vector, and specific implementation is, at one time in (in carrier cycle), reference voltage vector Vout is synthetic by two basic voltage vectors that are adjacent and zero vector.
When reference voltage vector is positioned at different sector, can calculate basic vector in the unit interval action time as follows:
During S=l, t
1=(V
Outd-V
Outq) T
E, t
2=V
OutqT
E
During S=2, t
2=V
OutdT
E, t
3=(V
Outq-V
Outd) T
E
During S=3, t
3=V
OutqT
E, t
4=-V
OutdT
E
During s=4, t
4=(V
Outq-V
Outd) T
E, t
5=-V
OutqT
E
During s=5, t
5=-V
OutdT
E, t
6=(V
Outd-V
Outq) T
E
During 5=6, t
6=-V
OutqT
E, t
1=V
OutdT
E
T
E=t
pwm/U
d。
Thereby, in different sectors, corresponding PWM waveform such as Fig. 7,8 of adopting symmetric form PWM mode to generate.
The above is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present utility model.
Claims (7)
1. motor frequency conversion controller, it is characterized in that: it comprises power module, photoelectric isolation module, control module and two-phase three-leg inverter module;
Described power module is used to control module and two-phase three-leg inverter module for power supply;
Described photoelectric isolation module is delivered to control module after being used for pulse signal, direction signal and enable signal that the upper control device transmits are isolated;
Described control module is used for carrying out the V/F variable frequency control according to the instruction of the described pulse signal that receives from described photoelectric isolation module, direction signal, enable signal, and output 6 tunnel space vector pulse width modulation signals are to two-phase three-leg inverter module;
Described power module link control module, control module connect two-phase three-leg inverter module, and two-phase three-leg inverter module output three phase supply is connected to outside unidirectional asynchronous machine; Described control module also connects photoelectric isolation module, and photoelectric isolation module is provided with pulse signal, direction signal, enable signal input.
2. motor frequency conversion controller as claimed in claim 1 is characterized in that: described two-phase three-leg inverter module comprises intelligent power driver module unit.
3. motor frequency conversion controller as claimed in claim 1, it is characterized in that: described two-phase three-leg inverter module comprises protected location, full-bridge or half bridge drive unit and 6 road power switchs; Described control module output connects full-bridge or half bridge drive unit, and full-bridge or half bridge drive unit connect respectively 6 road power switchs, and power switch output connects full-bridge or half bridge drive unit by protected location; Described full-bridge or half bridge drive unit have also been exported the overcurrent protection signal and have been connected to control module; Full-bridge or half bridge drive unit receive and drive respectively closing/closing of 6 road power switchs from output pulse width modulation signal after 6 tunnel space vector pulse width modulation signals of control module.
4. motor frequency conversion controller as claimed in claim 3, it is characterized in that: described 6 road power switchs comprise 6 insulated gate bipolar transistors; Described 6 insulated gate bipolar transistors are divided into three groups in twos; The base stage of two insulated gate bipolar transistors in every group connects respectively the pulse-width modulation output of full-bridge or half bridge drive unit, the collector electrode of an insulated gate bipolar transistor connects the positive pole of power module, the collector electrode that emitter connects another insulated gate bipolar transistor, the emitter of another insulated gate bipolar transistor and connects the ground of power module, and the connecting place of two insulated gate bipolar transistors in every group leads to a power supply mutually.
5. motor frequency conversion controller as claimed in claim 3, it is characterized in that: described 6 road power switchs comprise 6 metal-oxide-semiconductors; Described 6 metal-oxide-semiconductors are divided into three groups in twos; The grid of two metal-oxide-semiconductors in every group connects respectively the pulse-width modulation output of full-bridge or half bridge drive unit, positive pole, the drain electrode that the source electrode of a metal-oxide-semiconductor connects power module connects the source electrode of another metal-oxide-semiconductor, the drain electrode of another metal-oxide-semiconductor connects the ground of power module, and the connecting place of two metal-oxide-semiconductors in every group leads to a power supply mutually.
6. motor frequency conversion controller as described in claim 1-5 any one is characterized in that: described power module comprises AC power filter unit, switching power supply and the rectification filtering unit that connects successively.
7. motor frequency conversion controller as described in claim 1-5 any one, it is characterized in that: described control module comprises single-chip microcomputer or the digital signal processor with 6 road PWM peripheral hardwares.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013202670901U CN203278743U (en) | 2013-01-17 | 2013-05-16 | Motor frequency conversion controller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310017653 | 2013-01-17 | ||
| CN201310017653.6 | 2013-01-17 | ||
| CN2013202670901U CN203278743U (en) | 2013-01-17 | 2013-05-16 | Motor frequency conversion controller |
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| CN203278743U true CN203278743U (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013202670901U Expired - Lifetime CN203278743U (en) | 2013-01-17 | 2013-05-16 | Motor frequency conversion controller |
| CN201310181738.8A Active CN103248311B (en) | 2013-01-17 | 2013-05-16 | Frequency conversion controller of motor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248311A (en) * | 2013-01-17 | 2013-08-14 | 福建睿能电子有限公司 | Frequency conversion controller of motor |
| CN104038077A (en) * | 2014-04-29 | 2014-09-10 | 西南交通大学 | Single-phase direct-hanging AC-DC-AC converting system based on MMC (Modular Multilevel Converter) |
| CN109914025A (en) * | 2019-04-11 | 2019-06-21 | 北京大豪科技股份有限公司 | Yarn storage send yarn driving device and method, horizontal loom, equipment and storage medium |
| CN111549442A (en) * | 2020-03-24 | 2020-08-18 | 苏州特点电子科技有限公司 | Zero waste yarn end-starting control method of full-automatic computerized flat knitting machine |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013113557A1 (en) * | 2013-12-05 | 2015-06-11 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Compressor system for a railway vehicle and method for operating the compressor system with a safe emergency operation |
| CN104868821B (en) * | 2014-08-29 | 2018-04-03 | 广东美的环境电器制造有限公司 | The arrangements for speed regulation and speed regulating method of single phase induction motor |
| CN105141215B (en) * | 2015-08-19 | 2018-01-23 | 宋希华 | Single-phase output frequency converter and its control method |
| CN105680764A (en) * | 2016-03-31 | 2016-06-15 | 安徽理工大学 | Drill protection control system based on frequency conversion speed regulation |
| CN117176015A (en) * | 2023-09-18 | 2023-12-05 | 宁波舜韵电子有限公司 | High-power intelligent integrated kitchen electric variable frequency controller |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6121749A (en) * | 1998-05-11 | 2000-09-19 | Work Smart Energy Enterprises, Inc. | Variable-speed drive for single-phase motors |
| CN201044422Y (en) * | 2007-05-09 | 2008-04-02 | 乐星产电(无锡)有限公司 | Intelligent general frequency converter |
| CN202143030U (en) * | 2011-08-17 | 2012-02-08 | 广东奥特龙电器制造有限公司 | Motor controller for range hood |
| CN203278743U (en) * | 2013-01-17 | 2013-11-06 | 福建睿能电子有限公司 | Motor frequency conversion controller |
-
2013
- 2013-05-16 CN CN2013202670901U patent/CN203278743U/en not_active Expired - Lifetime
- 2013-05-16 CN CN201310181738.8A patent/CN103248311B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248311A (en) * | 2013-01-17 | 2013-08-14 | 福建睿能电子有限公司 | Frequency conversion controller of motor |
| CN103248311B (en) * | 2013-01-17 | 2016-02-24 | 福建睿能科技股份有限公司 | Frequency conversion controller of motor |
| CN104038077A (en) * | 2014-04-29 | 2014-09-10 | 西南交通大学 | Single-phase direct-hanging AC-DC-AC converting system based on MMC (Modular Multilevel Converter) |
| CN109914025A (en) * | 2019-04-11 | 2019-06-21 | 北京大豪科技股份有限公司 | Yarn storage send yarn driving device and method, horizontal loom, equipment and storage medium |
| CN111549442A (en) * | 2020-03-24 | 2020-08-18 | 苏州特点电子科技有限公司 | Zero waste yarn end-starting control method of full-automatic computerized flat knitting machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103248311A (en) | 2013-08-14 |
| CN103248311B (en) | 2016-02-24 |
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| C56 | Change in the name or address of the patentee |
Owner name: FUJIAN RAYNEN TECHNOLOGY CO., LTD.? Free format text: FORMER NAME: FUJIAN RAYNEN ELECTRONICS CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: Copper Road Software Avenue Gulou District of Fuzhou city in Fujian province 350003 Software Park No. 89 C District No. 26 building three layer A Patentee after: FUJIAN RAYNEN TECHNOLOGY Co.,Ltd. Address before: Copper Road Software Avenue Gulou District of Fuzhou city in Fujian province 350003 Software Park No. 89 C District No. 26 Patentee before: FUJIAN RAYNEN ELECTRONICS Co.,Ltd. |
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Granted publication date: 20131106 |