CN1217472C - Inverter - Google Patents
Inverter Download PDFInfo
- Publication number
- CN1217472C CN1217472C CN98123089XA CN98123089A CN1217472C CN 1217472 C CN1217472 C CN 1217472C CN 98123089X A CN98123089X A CN 98123089XA CN 98123089 A CN98123089 A CN 98123089A CN 1217472 C CN1217472 C CN 1217472C
- Authority
- CN
- China
- Prior art keywords
- circuit
- mentioned
- output
- inverter
- inverter circuit
- 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 - Fee Related
Links
Images
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
- H02M1/36—Means for starting or stopping converters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0069—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to the isolation, e.g. ground fault or leak current
-
- 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
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- 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
Abstract
n an inverter apparatus in which an inverter circuit drives a motor, a plurality of abnormality detecting apparatus detect abnormal signals. After the inverter circuit initiates an abnormality protection operation, the contents of the abnormality are inspected, and abnormality processing corresponding to the contents of the abnormality is quickly executed to realize a highly reliable inverter apparatus. According to the detected abnormality of the inverter circuit 4 or the motor 5, the output signals of the plurality of abnormality detecting apparatus 63 will operate an output inhibit circuit 62 in order to stop the output of the inverter circuit 4. The output signals of the abnormality detecting apparatus 62 are additionally loaded to a rotation control circuit 60 for identifying the abnormality.
Description
Technical field
The present invention relates to inverter by the inverter circuit drive motors.
Background technology
In recent years, proposed frequency by changing motor by inverter changing rotating speed of motor significantly for washing machine, thereby improved the motion of washing (-)off properties or dewatering.
In the past, the formation of this washing machine was shown in Japanese kokai publication hei 9-130960 communique.That is, detect the overcurrent of inverter, the signal loading of circuit overcurrent protection in the microcomputer of control inverter circuit, is protected according to overcurrent by circuit overcurrent protection.
But, in this structure in the past, when existing the short circuit current that when according to the power switch semiconductor misoperation of inverter circuit, produces to protect, since the operating lag of microcomputer, the problem of power transfer semiconductor generation short trouble.In addition, when the leakage, breaking action of motor immersion etc. took place, the delay of might moving because of opening circuit when microcomputer fault or misoperation be got an electric shock.
Summary of the invention
The present invention will solve above-mentioned problem in the past; its purpose is, detects abnormal signal by a plurality of abnormal detectors, judges unusual content in the abnormal protection action beginning back of inverter circuit; carry out at high speed and the unusual corresponding abnormality processing of content, realize the high inverter of reliability.
To achieve these goals, the inverter circuit of being controlled by the control circuit direct current power that will be connected in the rectification circuit on the AC power is converted to alternating electromotive force rear drive motor.Control circuit, control inverter circuit by the rotation control circuit that the control motor rotates, make the output inhibit circuit move the output that stops inverter circuit by the output signal of the unusual a plurality of abnormal detectors that detect inverter circuit or motor, with the output signal of abnormal detector load on judge in the rotation control circuit unusual.
Thus, detect abnormal signal, judge unusual content, just can carry out at high speed and the unusual corresponding abnormality processing of content, can realize the inverter that reliability is high by dual abnormal protection action back at inverter circuit by a plurality of abnormal detectors.
A kind of inverter of technical scheme 1 of the present invention has: AC power; Be connected the rectification circuit on the above-mentioned AC power; The direct current power of above-mentioned rectification circuit is converted to the inverter circuit of alternating electromotive force; Motor by above-mentioned inverter circuit driving; Control the control circuit of above-mentioned inverter circuit; It is characterized in that above-mentioned control circuit has: thus the rotation control circuit that above-mentioned inverter circuit control motor rotates controlled; Be used to detect the first unusual abnormal detector of the electric current that flows through above-mentioned inverter circuit; Be used to detect the second unusual abnormal detector between above-mentioned AC power and above-mentioned rectification circuit; And the output inhibit circuit that the output of above-mentioned inverter circuit is stopped according to the output signal of the output signal of above-mentioned first abnormal detector and above-mentioned second abnormal detector, above-mentioned rotation control circuit is imported the output signal of the output signal of above-mentioned output inhibit circuit and above-mentioned at least second abnormal detector and is differentiated unusually according to the signal that these are transfused to.Thereby can be by detecting abnormal signal by a plurality of abnormal detectors; carry out prohibited acts by the inverter circuit of output inhibit circuit execution; the dual abnormal protection action that stops with the driving of the inverter circuit of carrying out by rotation control circuit; after this; so can carry out at high speed and the unusual corresponding abnormality processing of content because judge unusual content, can realize the inverter that reliability is high.
The invention of technical solution of the present invention 2 is exactly in the invention of technical scheme 1, and above-mentioned control circuit is designed to make the output of inverter circuit stop the back unusual content of differentiation by the output inhibit circuit and carrying out abnormality processing.Like this, can extend the unusual processing time of judging, can corresponding unusual content carry out the abnormal protection action, and can carry out protection action according to priority.
The invention of technical solution of the present invention 3, be exactly in the invention of technical scheme 1, also possesses the Power Supply breaking system between AC power of being connected and the rectification circuit, above-mentioned Power Supply breaking system is made of zero phase current transformer and power switch device, the output signal of above-mentioned zero phase current transformer is added in second abnormal detector, when detection was unusual, after stopping the output of inverter circuit by the output inhibit circuit, rotation control circuit carried out anomalous discrimination and makes above-mentioned power switch device action.Therefore can be by the output inhibit circuit in the electric leakage of instantaneous trip from motor, owing to can cut off electric leakage, therefore can carry out duplicate protection thereafter with the power switch device of relay etc., can realize the anti-electric shock apparatus that reliability is high.
The invention of technical solution of the present invention 4, be in the invention of technical scheme 1, above-mentioned inverter circuit has: be connected the electrolytic capacitor between the input terminal of above-mentioned inverter circuit of input dc power power and be connected input terminal of above-mentioned inverter circuit and the current sensing means between the power switch device, detect the electric current that flows through above-mentioned inverter circuit by above-mentioned current sensing means, and with this detection signal as input signal to first abnormal detector.Can constitute the last underarm short-circuit protection and the demagnetization that prevents motor of power switch device thus, can correspondingly carry out suitable processing, perhaps report unusual with the unusual content of motor overload or misoperation etc.
Description of drawings
Fig. 1 is the circuit diagram of square frameization of a part of the inverter of the embodiment of the invention 1.
Fig. 2 is the profile that possesses the washing machine of same inverter.
Fig. 3 is the flow chart in abnormal detector when action of same inverter.
Fig. 4 is the circuit diagram of square frameization of a part of the inverter of the embodiment of the invention 2.
Fig. 5 is the flow chart of the electric leakage abnormal test of same inverter.
Embodiment
Below, with reference to the description of drawings embodiments of the invention.
(embodiment 1)
As shown in Figure 1, by Power Supply breaking system 2 alternating electromotive force is added in rectification circuit 3 from AC power 1 and is converted to direct current power.By inverter circuit 4 the output DC power of rectification circuit 3 is converted to alternating electromotive force, alternating electromotive force is added on the motor 5.Inverter circuit 4 is made of choking-winding 40, input capacitor 41, power switch device 42 and current sensing means 43.
Power Supply breaking system 2 is made of the zero phase current transformer 20 that constitutes residual current circuit breaker and power switch device 21a, 21b, detects deenergization behind the unsymmetrical current by zero phase current transformer 20.
The output inhibit circuit 62 of the output of oxide-semiconductor control transistors drive circuit 61, possesses latch circuit, and latch circuit output is added in output is stopped, be added in simultaneously on the rotation control circuit 60, rotation control circuit 60 stops the rotation control signal after detecting the latch circuit signal.In order to use the latch circuit signal, the signal Va that promptly abends stops output signal moment of rotation control circuit 60, uses the high speed input terminal or inserts input terminal.
The abnormal signal S of abnormal detector 63 also is added in the rotation control circuit 60, abends signal Va then imports abnormal signal S if detect, and judges unusual content.After judging unusual content, once more during starter motor 5, remove the reset signal Vr of breech lock.
The 2nd abnormal detector 63b, it is the device that detects electric leakage by the output signal that detects zero phase current transformer 20, detection of electrical leakage output signal Sb is added on logic and circuit 64 and the rotation control circuit 60, if be judged as by rotation control circuit 60 and detect electric leakage, then cut off the electricity supply by drive circuit 65 driving power switching device 21a, 21b.
Report circuit 66, judge at the microcomputer that constitutes rotation control circuit 60 and report unusually when unusual.
Fig. 2 has showed the embodiment of the washing machine that possesses the motor 5 that drives by above-mentioned inverter circuit 4.Its formation is arranged to steel ladle 10 to be hung on the shell 8 by rod 9 as shown in Figure 2, and the double dehydration barrel 11 of laundry is set in steel ladle 10, by the thumb wheel 12 of motor 5 drive arrangements in the bottom of the double dehydration barrel 11 of laundry.
When general laundry, drive thumb wheel 12 rotations, when the dehydration running, drive the double dehydration barrel 11 of laundry and rotate.In addition, carry out in the feedwater rinse cycle of rinsing to the waterside, the double dehydration barrel 11 of laundry is slowly run while feed water on the limit.Have again, while as a method of circulation cleaning in that the laundry dehydration barrel 11 of holding concurrently is rotated under the situation of wash, the double dehydration barrel 11 of doing washing is slowly run.
When driving thumb wheel 12 rotations, because being connected, adopts on the planetary reducing gear 14 on the axle 13 of motor 5, the output shaft 15 of reducing gear 14 is connected on the thumb wheel 12, the rotating speed of the rotor 50 of reducing motor 5 and constitute torque-converters, so can reduce the max. output torque of motor 5, thereby can make motor 5 miniaturizations.
But when the output of motor 5 was big, promptly when flowing through overcurrent, output torque increased, and its result is the production excessive torque on reducing gear 14, produced the fault of the wearing and tearing etc. of reducing gear 14.Need high speed detection thus and cut off the electric current of motor 5, prevent the demagnetization of permanent magnet 52 and the fault of reducing gear 14.
As the running of dewatering, when only the double dehydration barrel 11 of driving laundry is rotated, do not pass through reducing gear 14 by clutch mechanism (not shown), directly connect motor 5 and the dehydration barrel 11 of holding concurrently of doing washing.
As shown in Figure 2, if motor 5 is installed in the lower central of reducing gear 14, then has center of gravity and reduce the feature that reduces vibration noise, but because the position of motor 5 reduces, when water accumulated in draining support place of the washing machine that is called as waterproof seat, motor 5 immersions might be leaked electricity.At this moment, if detect electric leakage as mentioned above, inverter is stopped and cutting off the electricity supply at a high speed.
In above-mentioned formation, action when detecting unusually has been described with reference to Fig. 3.Fig. 3 is that the signal Va that abends that detects output inhibit circuit 62 judges unusual subprogram, to insert signal, perhaps carries out with the ground of the time cycle property below several milliseconds in the running.
From step 600 beginning subprogram, in step 601, detect the signal Va that abends of latch circuit, latch circuit judges whether to be set according to the abnormal signal of abnormal detector 63 in step 602.If signal becomes height, then moved owing at this moment exporting inhibit circuit 62, be the abnormality of output prohibited acts state, so enter step 603, rotation control circuit 60 stops rotation control circuit, stops the action of inverter circuit 4, and stops drive motors 5.If latch-up signal is low,, then be judged as noise, backspace subroutine if promptly do not abend signal.
In step 604, detect the output signal S of abnormal detector 63, in step 605, judge having or not of electric leakage abnormal signal Sb, if there is electric leakage unusually then enter step 606, driving power switching device 21 is cut off the electricity supply.
If electric leakage is not unusual, then do not enter step 607, in step 607, judge having or not of overcurrent abnormality signal Sa, if overcurrent abnormality is arranged then enter the count value that step 608 increases the anomalous counts device.But at this moment, the output of abnormal detector 63 must be to keep the monostable of abnormal signal to move during certain.
Then, judge in step 609 whether anomalous counts value N becomes maximum Nmax, if become maximum Nmax, then enters step 610, the abnormality processing of reporting unusually etc. owing to the 1st abnormal detector 63a action.This anomalous counts value N becomes the unusual of maximum Nmax, is the stop by motor 5, and perhaps the overcurrent abnormality that causes of the upper arm of power switch device 42 or underarm short circuit becomes the abnormal operation corresponding with the abnormality detection content.
In step 609, when reaching Nmax, anomalous counts value N do not enter step 611, and latch circuit is resetted, in step 612, detect the output of latch circuit, judge in step 613 whether latch circuit is reset.If latch circuit is output as height, if when promptly latch circuit is not reset, enter step 614, carry out unusual the reporting unusually of latch circuit, perhaps carry out the abnormality processing of the storage etc. of unusual content.If repeatedly reset and repeatedly confirm to detect unusual, then can prevent the misoperation of the abnormality detection of latch circuit.
When the laundry running of washing machine, increase excessive torque for motor 5 because clothes twines in moment and make the action of overcurrent abnormality checkout gear, but because anomalous counts device N does not reach Nmax thereby do not report unusually, can continue the laundry running in this case.
In washing machine, the starting torque of washing running is big, so-called dc brushless motor no Sensorised very difficult technically, position transducer is owing to use microcomputer to insert signal, if therefore the output signal to abnormal detector all adopts the insertion signal processing, then do not produce Motor torque, perhaps the abnormality processing action postpones, and makes the signal processing high speed but the present invention can reduce the insertion signal.
If employing present embodiment; then the output of the abnormal detector 63 that leak electricity at a high speed abnormality detection and overcurrent abnormality are detected is added on the output inhibit circuit 62; in the output prohibited acts of carrying out inverter circuit 4; stop the output of inverter circuit 4 in addition by rotation control circuit 60; judge the output signal of abnormal detector 63; carry out with the unusual corresponding dump of content or report the abnormal protection that waits unusually and move; thereby can prevent the electric shock that the electric leakage by motor 5 causes; prevent the short trouble of power switch device 42; prevent the demagnetization of the permanent magnet of motor 5, perhaps protect the mechanism that is connected on the motor 5 to prevent to be subjected to excessive torque etc.
In addition, overload at moment when laundry is turned round, the overcurrent that the misoperation of the power switch device that causes with impact noise by the outside produces only judges to unusually in unusual continuous situation repeatedly, can start once more to remain in operation unusually once in a while.
(embodiment 2)
As shown in Figure 4, control circuit 6 ' is by constituting with the lower part: rotation control circuit 60, and it produces 3 cross streams with microcomputer as the control maincenter, the positive and negative rotation or the rotating speed of control motor 5; Transistor driver circuit 61 is by the output signal driving power switching device 42 of rotation control circuit 60; Output inhibit circuit 62, the output of disable transistor drive circuit 61; A plurality of abnormal detectors 63 ' detect the unusual of inverter circuit 4; Logic and circuit 64 make 62 actions of output inhibit circuit, the output of oxide-semiconductor control transistors drive circuit 61 according to the output signal of abnormal detector 63 '.Basically the formation with embodiment 1 shown in Figure 1 is identical.
Constitute the 1st abnormal detector 63a ' of abnormal detector 63 ', detect the overcurrent of current sensing means 43 and signal is added on the logical circuit 64, make 62 actions of output inhibit circuit.The 1st abnormal detector 63a ' is made of the comparison circuit of integrated circuit relatively etc., does not need breech lock output or monostable action, does not also need signal is added on the rotation control circuit 60.
The 2nd abnormality detection displacement 63b, the same with the foregoing description 1 is the electric leakage abnormal detector, if detect electric leakage then keep the monostable action of exporting, and signal is added on logic and circuit 64 and the rotation control circuit 60 at certain hour,
The situation of present embodiment is, makes the latch circuit action of output inhibit circuit 62 by overcurrent abnormality signal Sa by logic and circuit 64, and rotation control circuit 60 stops driving power switching device 42 after detecting the signal Va that abends.At this moment, detect the signal of input abnormal detector 63 ' behind the signal Va that abends, can judge unusual content by having or not of electric leakage abnormal signal Sb, promptly, if there is electric leakage unusually then cut off the electricity supply because electric leakage is unusual, if not then can be judged as overcurrent abnormality, can omit the step 607 in the flow process of Fig. 3.
In the Power Supply breaking system 2 ' of Fig. 4, connect electrical leakage breaking test resistance 22 and leak(age) test switching device 23, add drive signal from rotation control circuit 60, if forced closed leak(age) test switching device 23, then in zero phase current transformer 20, flow through unsymmetrical current, 63 actions of electric leakage abnormal detector, output electric leakage abnormal signal Sb.At this moment, abnormal signal Va and electric leakage abnormal signal Sb by checking output inhibit circuit 62 just can judge that leak(age) test is normal or unusual.
The action of electrical leakage breaking test is described with reference to Fig. 5 in the above-described configuration.When the running beginning, establish the proof mark of electrical leakage breaking test, closed leak(age) test switching device 23 (not shown) during tens of milliseconds.
Fig. 5 is the figure that is added the step in flow process shown in Figure 3, differentiates having or not of proof mark in step 621, if there is proof mark just to enter step 622, and after postponing certain hour, in step 623, the input latch-up signal, signal Va promptly abends.
In step 624, judge having or not of the signal that abends, to be judged as latch circuit unusual if latch circuit, then enters step 625 not by set, the processing that shuts down and report unusually etc.If latch circuit normally then enter step 626, input electric leakage abnormal signal Sb judges having or not of electric leakage abnormal signal Sb in step 627, if enter the step 628 input abnormality processing of leaking electricity without signal.If normally then backspace subroutine is fallen proof mark, carry out flow process shown in Figure 3 since next time.
In addition, though show in the above-described embodiments, when constituting by Intelligent Power Module (IPM) under the situation of power switch device 42, usually in IPM in order to prevent the built-in overcurrent detecting device of transistorized short trouble, output over-current detection signal Fo.Usually, the built-in overcurrent of IPM detects level because than the permanent magnet of motor prevent that the demagnetization current level is also high, so need the demagnetization current abnormal detector in addition.Have, when being provided with the electric leakage abnormal detector, abnormal detector needs 3 at least again, if import abnormal signal respectively inverter circuit is stopped, then the high speed input terminal increases, and the abnormality processing time of microcomputer also increases, if but adopted the present invention, then could reduce the abnormality processing time.
If adopt the invention of technical scheme 1 of the present invention as mentioned above, owing to possess AC power; Be connected in the rectification circuit of above-mentioned AC power; The direct current power of above-mentioned rectification circuit is converted to the inverter circuit of alternating electromotive force; Motor by above-mentioned inverter circuit driving; Control the control circuit of above-mentioned inverter circuit, wherein, above-mentioned control circuit has, thereby controls the rotation control circuit that above-mentioned inverter circuit control motor rotates; Detect unusual a plurality of abnormal detectors of above-mentioned inverter circuit or above-mentioned motor; The output inhibit circuit that the output of above-mentioned inverter circuit is stopped according to the output signal of above-mentioned abnormal detector; And with the output signal of above-mentioned abnormal detector be added in judge in the above-mentioned rotation control circuit unusual, so can detect abnormal signal by a plurality of abnormal detectors, do not carry out the prohibited acts of inverter circuit at high speed by constituting the microcomputer of rotation control circuit by the output inhibit circuit, thereafter, because judge unusual content, so can prevent the destruction of the power switch device that causes by inversion action and the demagnetization of motor with several milliseconds of execution, perhaps prevent from the electric shock that causes by electric leakage from can realize the inverter that reliability is high.
In addition; if adopt the invention of technical scheme 2; then because control circuit makes the output of inverter circuit stop the unusual content of back differentiation by the output inhibit circuit; carry out abnormality processing; so can prolong the processing time of unusual judgement; can differentiate the misoperation of noise etc. and the misoperation of decision instant etc., can realize and the unusual corresponding optimum control of content, and can protect action according to priority.
Have again; if adopt the invention of technical scheme 3 of the present invention; then because of the Power Supply breaking system that possesses between AC power of being connected and the rectification circuit; above-mentioned Power Supply breaking system is made of zero phase current transformer and power switch device; the output signal of above-mentioned zero phase current transformer is added in the abnormal detector; the output signal of above-mentioned abnormal detector is added in rotation control circuit and the output inhibit circuit output of inverter circuit is stopped; then differentiate and make above-mentioned power switch device action unusually; so can be with exporting of the electric leakage of inhibit circuit instantaneous trip from motor; thereafter because can cut off electric leakage with the power switch device of relay etc.; so can realize duplicate protection, can improve the reliability of protection against electric shock.And then, because cut off the electricity supply after inverter circuit is stopped, so can prevent because the contact that the impulse current the during disconnection of power switch device causes damages.
And then, if adopt the invention of technical scheme 4, then because inverter circuit has the current sensing means that is connected in series with electrolytic capacitor and power switch device, unusually judge after making output inhibit circuit action with above-mentioned current sensing means and abnormal detector, so for because the moment misoperation that noise etc. causes, perhaps in the moment stop of the motor in when washing, do not regard as unusually, behind of short duration stopping, can remaining in operation.Have, if the signal that abends is successive, then is judged to be unusual and running is stopped, execute exception is reported the abnormality processing that waits, therefore can distinguish fault etc. unusually and the protection of moment property.And then, when breaking down, make the specific of fault content become simple by reporting unusually etc., can shorten the fault repair time.
Claims (4)
1. an inverter has: AC power; Be connected the rectification circuit on the above-mentioned AC power; The direct current power of above-mentioned rectification circuit is converted to the inverter circuit of alternating electromotive force; Motor by above-mentioned inverter circuit driving; Control the control circuit of above-mentioned inverter circuit; It is characterized in that,
Above-mentioned control circuit has: thus control the rotation control circuit that above-mentioned inverter circuit control motor rotates; Be used to detect the first unusual abnormal detector of the electric current that flows through above-mentioned inverter circuit; Be used to detect the second unusual abnormal detector between above-mentioned AC power and above-mentioned rectification circuit; And the output inhibit circuit that the output of above-mentioned inverter circuit is stopped according to the output signal of the output signal of above-mentioned first abnormal detector and above-mentioned second abnormal detector,
Above-mentioned rotation control circuit is imported the output signal of the output signal of above-mentioned output inhibit circuit and above-mentioned at least second abnormal detector and is differentiated unusually according to the signal that these are transfused to.
2. inverter according to claim 1 is characterized in that, above-mentioned control circuit is designed to make the output of inverter circuit stop the back unusual content of differentiation by the output inhibit circuit and carrying out abnormality processing.
3. inverter according to claim 1, it is characterized in that, also possesses the Power Supply breaking system between AC power of being connected and the rectification circuit, above-mentioned Power Supply breaking system is made of zero phase current transformer and power switch device, the output signal of above-mentioned zero phase current transformer is added in second abnormal detector, when detection was unusual, after stopping the output of inverter circuit by the output inhibit circuit, rotation control circuit carried out anomalous discrimination and makes above-mentioned power switch device action.
4. inverter according to claim 1 is characterized in that, above-mentioned inverter circuit has:
Be connected the electrolytic capacitor between the input terminal of above-mentioned inverter circuit of input dc power power and be connected input terminal of above-mentioned inverter circuit and the current sensing means between the power switch device, detect the electric current that flows through above-mentioned inverter circuit by above-mentioned current sensing means, and with this detection signal as input signal to first abnormal detector.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP197073/1998 | 1998-07-13 | ||
| JP19707398A JP3255115B2 (en) | 1998-07-13 | 1998-07-13 | Inverter device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1241838A CN1241838A (en) | 2000-01-19 |
| CN1217472C true CN1217472C (en) | 2005-08-31 |
Family
ID=16368277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98123089XA Expired - Fee Related CN1217472C (en) | 1998-07-13 | 1998-12-09 | Inverter |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3255115B2 (en) |
| KR (1) | KR100531529B1 (en) |
| CN (1) | CN1217472C (en) |
| TW (1) | TW415143B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI828419B (en) * | 2022-08-01 | 2024-01-01 | 大陸商昂寶電子（上海）有限公司 | Current sensing and overcurrent protection circuit for brushless DC motors |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100384171B1 (en) * | 2000-12-30 | 2003-05-16 | 현대자동차주식회사 | Device and method for driving a motor of electric vehicle in a state of emergency |
| CN100417004C (en) * | 2003-07-23 | 2008-09-03 | 松下电器产业株式会社 | Motor controlling equipment and washer and dryer using the same |
| JP4430501B2 (en) | 2004-09-29 | 2010-03-10 | トヨタ自動車株式会社 | Power output apparatus and vehicle equipped with the same |
| JP2006180569A (en) * | 2004-12-20 | 2006-07-06 | Tamagawa Seiki Co Ltd | Driving method of driver |
| JP4085112B2 (en) * | 2006-01-31 | 2008-05-14 | ファナック株式会社 | Motor control method and motor control apparatus |
| WO2008047439A1 (en) * | 2006-10-19 | 2008-04-24 | Mitsubishi Electric Corporation | Power converter |
| JP2011067065A (en) * | 2009-09-18 | 2011-03-31 | Omron Automotive Electronics Co Ltd | Motor driving apparatus |
| JP5879712B2 (en) * | 2011-03-18 | 2016-03-08 | 日立工機株式会社 | Electric tool |
| EP2686951A2 (en) | 2011-03-18 | 2014-01-22 | Hitachi Koki Co., Ltd. | Electric power tool |
| WO2012137514A1 (en) | 2011-04-08 | 2012-10-11 | 富士電機株式会社 | Power converter controller |
| JP6056631B2 (en) * | 2013-04-22 | 2017-01-11 | 株式会社デンソー | Motor control device and blower motor protection processing management method |
| JP6757112B2 (en) * | 2014-01-17 | 2020-09-16 | 株式会社日立産機システム | Power converter and state determination method of power converter |
| WO2019180828A1 (en) * | 2018-03-20 | 2019-09-26 | 三菱電機株式会社 | Air conditioner |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR900008393B1 (en) * | 1986-10-02 | 1990-11-17 | 미츠비시 덴키 가부시키가이샤 | Over current protection circuit for inverter apparatus |
| KR930001682Y1 (en) * | 1988-05-31 | 1993-04-10 | 삼성전자 주식회사 | Inverter |
| JP2735226B2 (en) * | 1988-07-06 | 1998-04-02 | 株式会社日立製作所 | Inverter abnormality judgment circuit |
| JPH0870580A (en) * | 1994-08-30 | 1996-03-12 | Sanyo Electric Co Ltd | Alarm circuit |
| KR0121247Y1 (en) * | 1995-06-20 | 1998-10-01 | 구자홍 | Breaking circuit for inrush current |
-
1998
- 1998-07-13 JP JP19707398A patent/JP3255115B2/en not_active Expired - Fee Related
- 1998-12-09 CN CN98123089XA patent/CN1217472C/en not_active Expired - Fee Related
- 1998-12-16 TW TW087120985A patent/TW415143B/en not_active IP Right Cessation
- 1998-12-31 KR KR1019980063367A patent/KR100531529B1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI828419B (en) * | 2022-08-01 | 2024-01-01 | 大陸商昂寶電子（上海）有限公司 | Current sensing and overcurrent protection circuit for brushless DC motors |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1241838A (en) | 2000-01-19 |
| KR100531529B1 (en) | 2006-01-27 |
| JP3255115B2 (en) | 2002-02-12 |
| KR20000010517A (en) | 2000-02-15 |
| TW415143B (en) | 2000-12-11 |
| JP2000032772A (en) | 2000-01-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1217472C (en) | Inverter | |
| CN108776306B (en) | Intelligent diagnosis device and method for faults of permanent magnet motor | |
| CN101382585B (en) | Test method, apparatus and generator for inverter in generator | |
| US9312796B2 (en) | Method and device for operating a brushless motor | |
| US5475290A (en) | Device for protecting washing machine motor including brushless motor against overcurrent | |
| CN106908722B (en) | A kind of diagnostic method of the phase current failure of switched reluctance machines | |
| CN101078747A (en) | Double salient-pole motor drive power tube fault diagnosis method | |
| CN1674431A (en) | Apparatus and method for determining whether motor lock error occurs in sensorless motor | |
| CN1920155A (en) | Barrel collision detection apparatus of washing machine and detection method thereof | |
| JP2001320894A (en) | Motor drive device | |
| CN112012914B (en) | Anti-reverse control device, magnetic suspension system and anti-reverse control method thereof | |
| CN112230075A (en) | Phase sequence detection method and device of brushless direct current motor and brushless direct current motor | |
| CN1077172C (en) | Washing machine | |
| KR101912970B1 (en) | Method and device for operating a brushless motor | |
| CN116653632A (en) | Control method and device for pure electric vehicle, pure electric vehicle and storage medium | |
| JPH11169582A (en) | Washing machine | |
| JPH11215880A (en) | Electric washing machine | |
| CN109659903A (en) | A kind of switched reluctance machines stall detection method | |
| CN109193566B (en) | Motor fault shutdown method and device, storage medium and motor | |
| JP2003219676A (en) | Motor driving device and washing machine | |
| JP4007054B2 (en) | Washing machine | |
| CN1212475C (en) | Stator controller | |
| JP2000032771A (en) | Inverter device | |
| JP7470014B2 (en) | washing machine | |
| CN1467326A (en) | Washing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050831 Termination date: 20111209 |