CN201726353U - Inverter for dishwashers - Google Patents
Inverter for dishwashers Download PDFInfo
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- CN201726353U CN201726353U CN2010201236409U CN201020123640U CN201726353U CN 201726353 U CN201726353 U CN 201726353U CN 2010201236409 U CN2010201236409 U CN 2010201236409U CN 201020123640 U CN201020123640 U CN 201020123640U CN 201726353 U CN201726353 U CN 201726353U
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Abstract
The utility model relates to an inverter for dishwashers, which is used for controlling the rotation speed of a permanent magnet synchronous motor. The inverter comprises a rectifier module, an inverter module, a current detection module, a voltage detection module, a control module and a communication interface connected with an upper computer, wherein the control module comprises a rotor speed and position determination unit, a speed loop PID regulation unit, a current-reading unit, a CLARK conversion unit, a PARK conversion unit, a current loop PID regulation unit, a reverse PARK conversion unit and a space vector pulse width modulation unit. The inverter has the advantages of high efficiency, little energy consumption, stable operation and low noise.
Description
Technical field
The utility model relates to electronic intelligence control technology field, more particularly, relates to a kind of frequency converter of dishwasher.
Background technology
The motor of traditional dishwasher uses alternating current machine mostly, and the rotating speed of motor of this dishwasher is fixed, and is immutable, and energy consumption is big, and noise and temperature fluctuation are big.
The utility model content
The technical problems to be solved in the utility model is, at the above-mentioned defective of prior art, provides a kind of frequency converter of dishwasher, can make that the dishwasher energy consumption is little, noise and temperature fluctuation be little.
The technical scheme that its technical problem that solves the utility model adopts is: the frequency converter of constructing a kind of dishwasher, be used to control the rotating speed of permagnetic synchronous motor, comprise rectification module, inversion module, also comprise current detection module, voltage detection module, control module and be connected the communication interface of host computer that described control module comprises spinner velocity and position determination unit, speed ring PID regulon, electric current reading unit, CLARK converter unit, PARK converter unit, electric current loop PID regulon, anti-PARK converter unit, space vector pulse width modulation unit;
Wherein, the input of rectification module connects AC power, the output of rectification module connects the input of inversion module, the control end link control module of inversion module, the input of voltage detection module connects the output of rectification module, the output of voltage detection module connects the first input end of spinner velocity and position determination unit, the feedback end of the first output connection speed ring PID regulon of spinner velocity and position determination unit, the given side of speed ring PID regulon connects communication interface, the output of speed ring PID regulon connects the given side of electric current loop PID regulon, the input of current detection module connects the output of inversion module, the output of current detection module connects the input of electric current reading unit, the input of the CLARK converter unit that the output of electric current reading unit connects, first output of CLARK converter unit connects second input of spinner velocity and position determination unit, second output of CLARK converter unit connects the first input end of PARK converter unit, second input of PARK converter unit connects second output of spinner velocity and position determination unit, the output of PARK converter unit connects the feedback end of electric current loop PID regulon, the output of electric current loop PID regulon connects the first input end of anti-PARK converter unit, second input of anti-PARK converter unit connects the 3rd output of spinner velocity and position determination unit, first output of anti-PARK converter unit connects the 3rd input of spinner velocity and position determination unit, the input of the second output connection space vector pwm unit of anti-PARK converter unit, the output of space vector pulse width modulation unit connects the control end of inversion module.
In the frequency converter of dishwasher described in the utility model, described current detection module is single resistor current detection module.
In the frequency converter of dishwasher described in the utility model, spinner velocity and position determination unit are sliding mode observer.
In the frequency converter of dishwasher described in the utility model, also be included as control module powered switch power supply.
Implement the frequency converter of dishwasher of the present utility model, the advantage that efficient height, energy consumption be little, operate steadily, noise is low.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the building-block of logic of the frequency converter embodiment one of the utility model washing machine;
Embodiment
As shown in Figure 1, in the building-block of logic of the frequency converter embodiment one of washing machine of the present utility model, the frequency converter of this washing machine is used to control the rotating speed of permagnetic synchronous motor (PMSM), in this embodiment, frequency converter comprises rectification module 100, inversion module 200, the communication interface 300 that connects host computer, current detection module 400, voltage detection module 500 and control module 600, wherein, control module 600 comprises spinner velocity and position determination unit 610, speed ring PID regulon 620, electric current reading unit 630, CLARK converter unit 640, PARK converter unit 650, electric current loop PID regulon 660, anti-PARK converter unit 670 and space vector pulse width modulation (SVPWM) unit 680.The input of rectification module 100 connects AC power, the output of rectification module 100 connects the input of inversion module 200, the control end link control module 600 of inversion module 200, the input of voltage detection module 500 connects the output of rectification module 100, the output of voltage detection module 500 connects the first input end of spinner velocity and position determination unit 610, the feedback end of the first output connection speed ring PID regulon 620 of spinner velocity and position determination unit 610, the given side of speed ring PID regulon 620 connects communication interface 300, the output of speed ring PID regulon 620 connects the given side of electric current loop PID regulon 660, the input of current detection module 400 connects the output of inversion module 200, the output of current detection module 400 connects the input of electric current reading unit 630, the output of electric current reading unit 630 connects the input of CLARK converter unit 640, first output of CLARK converter unit 640 connects second input of spinner velocity and position determination unit 610, second output of CLARK converter unit 640 connects the first input end of PARK converter unit 650, second input of PARK converter unit 650 connects second output of spinner velocity and position determination unit 610, the output of PARK converter unit 650 connects the feedback end of electric current loop PID regulon 660, the output of electric current loop PID regulon 660 connects the first input end of anti-PARK converter unit 670, second input of anti-PARK converter unit 670 connects the 3rd output of spinner velocity and position determination unit 610, first output of anti-PARK converter unit 670 connects the 3rd input of spinner velocity and position determination unit 610, the input of the second output connection space vector pwm unit 680 of anti-PARK converter unit 670, the output of space vector pulse width modulation unit 680 connects the control end of inversion module 200.
The following describes the operation principle of this dishwasher frequency converter, at first the alternating current (220VAC-240VAC) of AC power output becomes direct current behind rectification module 100, inversion module 200 generally is made of six power transistors (IGBT) that are divided into upper arm and underarm, as the switch of control motor coil.This inversion module 200 becomes to require the three phase sine voltage of frequency with dc inverter according to the control signal of control module 600 outputs, and exports permagnetic synchronous motor to, thereby allows motor rotational speed on request.Current detection module 400 detects the three-phase current of permagnetic synchronous motor, and voltage detection module 500 detects busbar voltage, and control module 600 is according to three-phase current that is detected and busbar voltage, to inversion module 200 output frequency control signals.Specifying control module 600 below is how to realize above function, at first, electric current reading unit 630 reads the different electric currents that constantly detected, and obtain three-phase current ia according to ia+ib+ic=0, ib, ic, CLARK converter unit 640 is with resultant three-phase current ia, ib, ic is transformed to the i α in the static orthogonal coordinate system of two-phase, i β, spinner velocity and position determination unit 610 are according to the busbar voltage that is detected, i α in the static orthogonal coordinate system of the resulting two-phase of CLARK conversion, predeterminated voltage v α * in the static orthogonal coordinate system of two-phase that i β and anti-PARK converter unit 670 are calculated, v β *, the physical location of estimation rotor, promptly determine the speed omega r and the angle θ rel of rotor, PARK converter unit 650 is according to determined angle θ rel, with the i α in the static orthogonal coordinate system of two-phase, i β is converted to the iqs in the two-phase rotating coordinate system, ids.Speed ring PID regulon 620 receives the feedback speed ω r that setting speed ω r* that host computers are sent by communication interface 300 and spinner velocity and position determination unit 610 are exported, thereby calculate the predetermined current iqs* in the two-phase rotating coordinate system, ids*, electric current loop PID regulon 660 is according to the predetermined current iqs* in the two-phase rotating coordinate system, iqs in the two-phase rotating coordinate system of ids* and PARK conversion output, ids, calculate in the two-phase rotating coordinate system predeterminated voltage vqs*, vds*, anti-PARK converter unit 670 is according to determined angle θ rel, with the predeterminated voltage vqs* in the two-phase rotating coordinate system that is calculated, the anti-PARK of vds* is transformed to predeterminated voltage v α * in the static orthogonal coordinate system of two-phase, v β *, and exporting space vector pulse width modulation unit 680 to, space vector pulse width modulation unit 680 is with predeterminated voltage v α * in the static orthogonal coordinate system of two-phase, v β * is transformed to three-phase predeterminated voltage va, vb, vc also outputs to inversion module 200.
Preferably, spinner velocity and position determination unit 610 are sliding mode observer, and sliding mode observer is constantly revised by constantly obtaining the deviation between estimated value and the measured value, both deviations is faded away, to realize the estimation to angle of rotor and speed.Adopt sliding mode observer, can save position transducer, and precision is higher, robustness is stronger.
Preferably, current detection module 400 is single resistor current detection module, this list resistance is connected the bus negative terminal, bus current is sampled, sample by bus current to the special occasion, parse the threephase stator electric current of motor then, this single resistance bus current sampling is compared with three resistance or Hall current sensor and is obviously wanted cheap, can effectively save the circuit hardware cost.
Preferably, the inverter in the utility model also comprises Switching Power Supply, is used to control module 600 power supplies.
The utility model adopts FOC (field orientation) control, can conveniently realize the lotus root of separating of magnetic field ac-dc axis, thereby realize Torque Control, realize weak magnetic or strong magnetic control system by the control direct axis component by the quadrature axis component of controlling magnetic field, weak magnetic control system can improve rotating speed, and strong magnetic control system can improve moment.
Be preferred embodiment of the present utility model only below, be not limited to the utility model, for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present utility model.
Claims (4)
1. the frequency converter of a dishwasher, be used to control the rotating speed of permagnetic synchronous motor, comprise rectification module (100), inversion module (200), it is characterized in that, also comprise current detection module (400), voltage detection module (500), control module (600) and the communication interface that is connected host computer (300), described control module (600) comprise spinner velocity and position determination unit (610), speed ring PID regulon (620), electric current reading unit (630), CLARK converter unit (640), PARK converter unit (650), electric current loop PID regulon (660), anti-PARK converter unit (670), space vector pulse width modulation unit (680);
Wherein, the input of rectification module (100) connects AC power, the output of rectification module (100) connects the input of inversion module (200), the control end link control module (600) of inversion module (200), the input of voltage detection module (500) connects the output of rectification module (100), the output of voltage detection module (500) connects the first input end of spinner velocity and position determination unit (610), the feedback end of the first output connection speed ring PID regulon (620) of spinner velocity and position determination unit (610), the given side of speed ring PID regulon (620) connects communication interface (300), the output of speed ring PID regulon (620) connects the given side of electric current loop PID regulon (660), the input of current detection module (400) connects the output of inversion module (200), the output of current detection module (400) connects the input of electric current reading unit (630), the output of electric current reading unit (630) connects the input of CLARK converter unit (640), first output of CLARK converter unit (640) connects second input of spinner velocity and position determination unit (610), second output of CLARK converter unit (640) connects the first input end of PARK converter unit (650), second input of PARK converter unit (650) connects second output of spinner velocity and position determination unit (610), the output of PARK converter unit (650) connects the feedback end of electric current loop PID regulon (660), the output of electric current loop PID regulon (660) connects the first input end of anti-PARK converter unit (670), second input of anti-PARK converter unit (670) connects the 3rd output of spinner velocity and position determination unit (610), first output of anti-PARK converter unit (670) connects the 3rd input of spinner velocity and position determination unit (610), the input of the second output connection space vector pwm unit (680) of anti-PARK converter unit (670), the output of space vector pulse width modulation unit connects the control end of inversion module.
2. the frequency converter of dishwasher according to claim 1 is characterized in that, described current detection module is single resistor current detection module.
3. the frequency converter of dishwasher according to claim 1 is characterized in that, spinner velocity and position determination unit are sliding mode observer.
4. the frequency converter of dishwasher according to claim 1 is characterized in that, also is included as control module powered switch power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201236409U CN201726353U (en) | 2010-03-03 | 2010-03-03 | Inverter for dishwashers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201236409U CN201726353U (en) | 2010-03-03 | 2010-03-03 | Inverter for dishwashers |
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| Publication Number | Publication Date |
|---|---|
| CN201726353U true CN201726353U (en) | 2011-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201236409U Expired - Fee Related CN201726353U (en) | 2010-03-03 | 2010-03-03 | Inverter for dishwashers |
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| CN (1) | CN201726353U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594254A (en) * | 2012-02-27 | 2012-07-18 | 美的集团有限公司 | System for reducing noise of permanent magnet synchronous motor and control method |
| CN102957372A (en) * | 2011-08-23 | 2013-03-06 | 上海工程技术大学 | Double closed-loop control system of permanent-magnet synchronous motor |
| CN104124849A (en) * | 2013-04-25 | 2014-10-29 | 常州雷利电机科技有限公司 | Brushless motor for drainage pump and drainage pump |
-
2010
- 2010-03-03 CN CN2010201236409U patent/CN201726353U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957372A (en) * | 2011-08-23 | 2013-03-06 | 上海工程技术大学 | Double closed-loop control system of permanent-magnet synchronous motor |
| CN102594254A (en) * | 2012-02-27 | 2012-07-18 | 美的集团有限公司 | System for reducing noise of permanent magnet synchronous motor and control method |
| CN104124849A (en) * | 2013-04-25 | 2014-10-29 | 常州雷利电机科技有限公司 | Brushless motor for drainage pump and drainage pump |
| WO2014173232A1 (en) * | 2013-04-25 | 2014-10-30 | 常州雷利电机科技有限公司 | Brushless motor for drainage pump and drainage pump |
| CN104124849B (en) * | 2013-04-25 | 2018-03-27 | 常州雷利电机科技有限公司 | Draining pump brushless motor and draining pump |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110126 Termination date: 20180303 |