CN108242892A - For controlling the method and apparatus of driving circuit - Google Patents
For controlling the method and apparatus of driving circuit Download PDFInfo
- Publication number
- CN108242892A CN108242892A CN201611208646.4A CN201611208646A CN108242892A CN 108242892 A CN108242892 A CN 108242892A CN 201611208646 A CN201611208646 A CN 201611208646A CN 108242892 A CN108242892 A CN 108242892A
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- Prior art keywords
- bus capacitance
- driving circuit
- storage duration
- monitored
- bus
- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M5/4585—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only having a rectifier with controlled elements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
Abstract
A kind of this disclosure relates to method (300) for being used to control driving circuit (100), wherein described driving circuit (100) includes bus capacitance (130), and the method (300) is monitored including the storage duration to bus capacitance (130)；In response to the monitored bus capacitance (130) using duration more than threshold value, generation is used to indicate the control signal (Sc) for the input voltage that provide the bus capacitance (130), to confess that the supply voltage of electric line (Vac) is controllably rectified to the input voltage (Vdc) that provide the bus capacitance (130) in the future.In addition, the disclosure further relates to a kind of equipment (200) for being used to control driving circuit (100).
Description
Technical field
The present invention relates to circuit fields.Particularly, the present invention relates to a kind of methods and apparatus for controlling driving circuit.
More particularly, it relates to a kind of be used to control the side restored automatically of electrolytic capacitor that the long-time in driving circuit stores
Method and equipment.
Background technology
Usually using alminium electrolytic condenser as the bus capacitance in driver.The oxide layer of alminium electrolytic condenser is such as drive
It moves the storage time (such as 1 year or more) of device and degrades.At this moment if specified input voltage is applied to driver
Input terminal, the bus capacitance of driver may cause internal short-circuit due to defective insulation.Therefore, it is necessary to control to be applied to bus
Input voltage on capacitance, to be repaired to bus capacitance.Traditional method needs to control input voltage manually, this
Considerably increase the workload and cost of labor of maintenance.
Invention content
In order to solve problem of the prior art, embodiment of the disclosure is intended to provide a kind of side for being used to control driving circuit
Method, this method can be according to the storage durations of the bus capacitance of driving circuit come the determining bus capacitance that provide driving circuit
Input voltage and supply voltage is automatically adjusted to provide driving circuit bus capacitance input voltage, so as to
On the one hand it avoids since bus capacitance stores the risk that degradation (degraded) is caused to bring for a long time, on the other hand eliminates people
Work adjusts the workload of voltage, so as to further improve the performance of driving circuit.
The first aspect of the disclosure provides a kind of method for controlling driving circuit, wherein the driving circuit includes
Bus capacitance, the method includes：The storage duration of bus capacitance is monitored；And in response to the monitored bus
The storage duration of capacitance is more than threshold value, and generation is used to indicate the control signal for the input voltage that provide the bus capacitance,
To confess that the supply voltage of electric line is controllably rectified to the input voltage that provide the bus capacitance in the future.
According to the disclosure exemplary embodiment, the storage duration of bus capacitance is monitored including from it is real-time when
Clock obtains the storage duration of the bus capacitance.
According to the disclosure exemplary embodiment, generation is used to indicate the input electricity that provide the bus capacitance
The control signal of pressure includes being more than first threshold in response to the storage duration of the monitored bus capacitance and is less than the
Two threshold values generate first control signal；And in response to the monitored bus capacitance storage duration be more than described second
Threshold value generates second control signal.
According to the disclosure exemplary embodiment, the supply voltage is general three-phase alternating voltage.
The second aspect of the disclosure provides a kind of equipment for controlling driving circuit, wherein the driving circuit includes
Bus capacitance, the equipment include：Monitoring device is configured the storage duration to bus capacitance and is monitored；And judgement dress
It puts, be coupled the monitoring device and be configured to respond to the storage duration of the monitored bus capacitance more than threshold
Value, generation is used to indicate the control signal for the input voltage that provide the bus capacitance, to confess the confession of electric line in the future
Piezoelectric voltage is controllably rectified to the input voltage that provide the bus capacitance.
According to the disclosure exemplary embodiment, the monitoring device is additionally configured to from described in real-time clock acquisition
The storage duration of bus capacitance.
According to the disclosure exemplary embodiment, the decision maker is additionally configured to described in response to monitoring
The storage duration of bus capacitance is more than first threshold and is less than second threshold, generates first control signal；And in response to
The storage duration for monitoring the bus capacitance is more than the second threshold, generates second control signal.
According to the disclosure exemplary embodiment, the supply voltage is general three-phase alternating voltage.
Embodiment of the disclosure provided for the method and apparatus that controls driving circuit, can be according to driving circuit
The storage duration of bus capacitance is automatically adjusted to provide the input voltage of the bus capacitance of driving circuit, so as on the one hand
It avoids since bus capacitance stores the risk that causes to degrade and bring for a long time, on the other hand eliminates the work of manual adjustment voltage
Amount, so as to further improve the performance of driving circuit.
It should be appreciated that Summary is not intended to the key or important feature of mark embodiment of the disclosure, it is also non-
It is intended for limitation the scope of the present disclosure.The other feature of the disclosure will be easy to understand by following description.
Description of the drawings
By the description to the example embodiment in attached drawing, the feature and advantage of the disclosure will be apparent from, in the accompanying drawings：
Fig. 1 shows the schematic diagram of the structure of the driving circuit 100 according to one embodiment of the disclosure；
Fig. 2 shows one embodiment according to the disclosure for controlling the schematic diagram of the equipment 200 of driving circuit；
Fig. 3 shows the flow chart for being used to control the method 300 of driving circuit of one embodiment according to the disclosure；
Fig. 4 shows the flow chart for being used to control the method 400 of driving circuit of one embodiment according to the disclosure；
Fig. 5 shows the isoboles of the driving circuit for simulating 500 of one embodiment according to the disclosure；
Fig. 6 shows the oscillogram of the input voltage of the bus capacitance through simulation of one embodiment according to the disclosure.
In all the appended drawings, same or similar reference number represents same or similar element.
Specific embodiment
The principle of the disclosure is described referring now to some example embodiments.It is appreciated that these embodiments are merely for saying
It is bright and help it will be understood by those skilled in the art that with the purpose of the embodiment disclosure and describe rather than suggest the model to the disclosure
Any restrictions enclosed.Content of this disclosure described here can in a manner of described below except various modes implement.
As herein, term " comprising " and its various variants are construed as open-ended term, it means that " including but
It is not limited to ".Term " some embodiments " is construed as " at least one embodiment ".
Fig. 1 shows the schematic diagram of the structure of the driving circuit 100 according to one embodiment of the disclosure.As shown in Figure 1,
Driving circuit 100 includes：For providing supply voltage three-phase alternating-current supply 110, it is coupled to the rectification of the three-phase alternating-current supply 110
Device 120, rectifier 120 in Fig. 1 include the bridge rectifier of thyristor, the rectifier 120 be used for supply voltage into
Row rectification.Driving circuit 100 further includes the bus capacitance 130 for being coupled to rectifier 120, the inversion for being coupled to bus capacitance 130
Device 140 and the motor 150 for being coupled to inverter.The inverter 140 is used to turn the DC voltage exported from bus capacitance 130
It changes alternating voltage into, provides the alternating voltage to motor 150.It should be appreciated that the driving circuit 100 shown in Fig. 1 is only
It is an exemplary embodiment of the disclosure, and not as the restriction of the structure to the driving circuit 100, without prejudice to this public affairs
Under the premise of the spirit opened, the component that is included to the driving circuit 100 shown in Fig. 1 increased, is deleted and equivalent
Any situation replaced all is possible.
Bus capacitance in this driving circuit shown in FIG. 1 is usually since its oxide layer is made with the growth of storage time
Into aging, so as to which the insulation of bus capacitance be caused to degrade.And it is needed largely by adjusting the voltage on bus capacitance manually
Maintenance cost and workload.Therefore a kind of effective method is needed so that the voltage that be applied on bus capacitance can
It is automatically controlled based on its different degree of aging changed over time.
Fig. 2 shows one embodiment according to the disclosure for controlling the schematic diagram of the equipment 200 of driving circuit.Such as
Shown in Fig. 2, for the equipment 200 of driving circuit to be controlled to include monitoring device 220, which can be to bus capacitance
130 storage duration is monitored.It should be noted that the monitoring unit 220 can be provided in the operating surface of driving circuit
Real-time clock on plate.When the driving circuit is switched on, monitoring unit 220 starts to monitor the use duration of bus capacitance 130.
The equipment 200 of control driving circuit further includes decision maker 210, which is coupled monitoring device 220.The decision maker
Control signal is generated for the storage duration of the bus capacitance 130 monitored according to monitoring device 220, rectification to be controlled to fill
Put the rectification of 120 couples of supply voltage Vac.Specifically, when decision maker 220 can include the storage of scheduled bus capacitance 130
Long threshold value, such as the threshold value can be 1 year.In this case, once decision maker 220 receives depositing for bus capacitance 130
Duration is stored up more than 1 year, then generates control signal Sc.Control signal Sc can indicate to provide the bus capacitance 130
Input voltage.Control signal Sc is sent to fairing 120, whole to be carried out to the supply voltage Vac from supply line
Stream, such as it is rectified to the input voltage that the bus capacitance 130 to be provided indicated by control signal Sc.
In certain embodiments, decision maker 220 can include the storage duration of at least one scheduled bus capacitance 130
Threshold value.Particularly, decision maker 220 can include the storage duration threshold value of two scheduled bus capacitances 130, such as the first threshold
Value and second threshold.In certain embodiments, which can be 1 year and the second threshold can be 2 years.This
In the case of, when the storage duration for receiving bus capacitance 130 is more than 1 year and 2 years are less than, decision maker 220 can generate
First control signal will provide the first input voltage of the bus capacitance 130 with instruction.And work as and receive bus capacitance
For 130 storage duration more than 2 years, decision maker 220 can generate second control signal, and the bus is provided with instruction
Second input voltage of capacitance 130.In certain embodiments, these control signals can be sent to drive shown in FIG. 1
The fairing 120 of circuit 100 is moved so that the fairing 120 to be controlled to carry out rectification Vac to supply voltage.Specifically, certain
In embodiment, rectifier 120 includes the bridge rectifier of thyristor, which can change the angle of flow of thyristor,
Supply voltage to be controllably rectified to the input voltage that provide bus capacitance 130.
Fig. 3 shows the flow chart for being used to control the method 300 of driving circuit of one embodiment according to the disclosure.Figure
4 show the flow chart for being used to control the method 400 of driving circuit of one embodiment according to the disclosure.Presently in connection with Fig. 2
To illustrate the method according to an embodiment of the present disclosure for controlling driving circuit shown in figs. 3 and 4.As shown in figure 3,
At 310, the storage duration of bus capacitance is monitored.As mentioned by when being illustrated to Fig. 2, to bus capacitance
It can be implemented using the monitoring of duration by the real-time clock being arranged on the operation panel of driving circuit.At 320, work as reception
To the bus capacitance monitored storage duration and judge that this alreadys exceed threshold value using duration, just generation control signal, with
The supply voltage of confession electric line is rectified to the input voltage that provide the bus capacitance in the future.The control signal can be used
The input voltage of bus capacitance is provided in instruction.Next step 320 in figure 3 is expanded on further with reference to Fig. 4.
The action implemented at 410 is approximate or is equal to step 310 in figure 3, therefore details are not described herein.Such as illustrated to Fig. 2
When it is mentioned, the storage duration threshold value of at least one bus capacitance 130 can be made a reservation for.It is shown in Fig. 4 go out method 400 in,
Assuming that there are the storage duration threshold value of two scheduled bus capacitances, such as first threshold and second threshold.In some embodiments
In, which can be 1 year and the second threshold can be 2 years.Therefore, at 420, the received bus electricity of judgement
Whether whether the storage duration of appearance is more than first threshold, i.e., be more than 1 year, if it is, at 430, the received bus of judgement
Whether the storage duration of capacitance is more than second threshold, if it is not, then at 440, generates first control signal, first control signal
The first input voltage of bus capacitance can be indicated to provide, such as the voltage can be 0.5 times of supply voltage.If
It is then at 460, to generate second control signal, second control signal can indicate to provide the second input of bus capacitance
Voltage, such as the voltage can be 0.25 times of supply voltages.In addition, if received bus capacitance is judged at 420
It stores duration and is less than first threshold, then do not generate control signal.It should be appreciated that the bus capacitance of this part description uses duration
Pair that provide between the voltage of bus capacitance and supply voltage indicated by the size and number of threshold value and control signal
It should be related to the restriction for being only exemplary and being not intended as to them.These numerical value can be according to the operation of driving circuit
Limitation with bus capacitance requires to be changed.
Fig. 5 shows the isoboles and Fig. 6 of the driving circuit for simulating 500 of one embodiment according to the disclosure
Show the oscillogram of the input voltage of the bus capacitance through simulation of one embodiment according to the disclosure.It is risen in order to concise
See, the equipment for controlling driving circuit be not shown in Figure 5, it should be understood that can utilize Fig. 2 to Fig. 4 according to this
Disclosed embodiment is used to control the device and method of driving circuit to according to driving circuit for simulating illustrated in fig. 5
500 carry out simulation control.As shown in figure 5, driving circuit 500 for simulating includes rectifier 510, which can be with
It is the bridge-type rectifier for including thyristor.The rectifier 510 is coupling between three-phase alternating-current supply and bus capacitance 520.
Three-phase alternating-current supply provides input voltage vin to rectifier 510.As being described above, to the bus capacitance in Fig. 5
520 storage duration is monitored, if monitoring that storage duration more than 1 year, exports rectifier 510 control signal.
In some embodiments, control signal can be reference voltage Vref.Such as at 430 in Fig. 4, the received bus electricity of judgement
Whether the storage duration of appearance is more than second threshold, such as the second threshold can be 2 years.Generate second control signal, the second control
Signal processed can indicate to provide the second input voltage of bus capacitance, such as the voltage can be 0.25 times of power supply electricity
Pressure.Referring again to Fig. 5, decision maker herein for example can Vref be supplied to as the reference voltage by 0.25 times of supply voltage
Rectifier 510.Rectifier 510 in Fig. 5 includes angle of flow regulating device 515.In certain embodiments, which adjusts dress
The input signal from three aspects can be received by putting 515.First aspect is the input voltage vin from supply line, second
Aspect is reference voltage Vref from decision maker and the third aspect is the bus capacitance fed back from bus capacitance 520
Voltage Vbus.Although not shown in the drawings, the angle of flow regulating device 515 can also include comparison means and trigger device.Wherein
Comparison means is compared reference voltage Vref with the bus capacitor voltage Vbus fed back from bus capacitance 520, once
It is had differences between reference voltage Vref and bus capacitor voltage Vbus, is then generated to trigger rectifier 510 by trigger device
In angle of flow regulating device 515 trigger signal so that angle of flow regulating device 515 adjust rectifier 510 in the angle of flow
To carry out rectification to the input voltage vin from supply line.Supply voltage after rectified is applied to bus capacitance 520.
Thus avoid short-circuit risks caused by possibility after rated voltage is applied directly on bus capacitance 520.As a result, bus
Capacitance voltage Vbus is equal or approximately equal to applied reference voltage Vref.It is shown in FIG. 6 certain according to the disclosure
The illustrative isoboles that the driving circuit being shown in FIG. 5 is applied in for the equipment that controls driving circuit of a little fact Examples
When obtained input voltage vin and bus capacitor voltage Vbus simulation curves, wherein input voltage vin is 400Vac, and is joined
Examine the input voltage that voltage Vref is 0.25 times.Assuming that in the ideal case, alternating voltage 400Vac is converted into 565.5Vdc's
DC voltage.Then reference voltage Vref is approximately equal to 141Vdc.The bus capacitor voltage Vbus curves through simulation are shown in FIG. 6
Vbus is approximately equal to 141Vdc.
In general, although the details of several specific implementations in above discussion by comprising, these should
It is interpreted any restrictions to the scope of the present disclosure, but the description of feature is only for specific embodiment.The one of separation
Certain features described in a little embodiments can also in combination perform in single embodiment.On the contrary, it is retouched in single embodiment
The various features stated can also be implemented separately or implement in any suitable subcombination in various embodiments.
Although the disclosure is described with specific structural features, it will be appreciated that in the dependent claims limit
The range of technical solution is not necessarily limited to above-mentioned specific features.In other words, the optional reality of the only disclosure described above
Apply example.For those skilled in the art, embodiment of the disclosure may have various modifications and variations.It is all in the disclosure
Spirit and principle within any modification, equivalence replacement, the improvement etc. made, be all contained within the protection domain of the disclosure.
Claims (8)
1. one kind is for controlling the method (300) of driving circuit (100), wherein the driving circuit (100) is including bus capacitance
(130), the method (300) includes：
Bus capacitance (130) is monitored using duration；And
Storage duration in response to the monitored bus capacitance (130) is more than threshold value, and generation, which is used to indicate, will provide institute
The control signal of the input voltage of bus capacitance (130) is stated, to confess that the supply voltage of electric line is controllably rectified to institute in the future
The input voltage of the bus capacitance (130) will be provided by stating.
2. the method (300) stated according to claim 1, wherein the storage duration of bus capacitance (130) is monitored including：
The storage duration of the bus capacitance (130) is obtained from real-time clock.
3. according to the method for claim 1 (300), wherein generation, which is used to indicate, will provide the bus capacitance (130)
The control signal of input voltage include：
It is more than first threshold in response to the storage duration of the monitored bus capacitance (130) and is less than second threshold,
Generate first control signal；
Storage duration in response to the monitored bus capacitance (130) is more than the second threshold, and the second control of generation is believed
Number.
4. according to the method for claim 1 (300), the supply voltage is general three-phase alternating voltage.
5. one kind is for controlling the equipment (200) of driving circuit (100), wherein the driving circuit includes bus capacitance (130),
The equipment includes：
Monitoring device (220) is configured to be monitored the storage duration of bus capacitance (130)；
Decision maker (210) is coupled the monitoring device (220) and is configured to respond to the monitored bus electricity
The storage duration for holding (130) is more than threshold value, and generation is used to indicate the control for the input voltage that provide the bus capacitance (130)
Signal processed, to confess that the supply voltage of electric line will provide the bus capacitance (130) described in being controllably rectified in the future
Input voltage.
6. equipment (200) according to claim 5, the monitoring device (220) is additionally configured to：
The storage duration of the bus capacitance (130) is obtained from real-time clock.
7. circuit device (100) according to claim 5, the decision maker (210) is additionally configured to：
It is more than first threshold in response to the storage duration of the monitored bus capacitance (130) and is less than second threshold,
Generate first control signal；
Storage duration in response to the monitored bus capacitance (130) is more than the second threshold, and the second control of generation is believed
Number.
8. circuit device (100) according to claim 5, the supply voltage is general three-phase alternating voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611208646.4A CN108242892A (en) | 2016-12-23 | 2016-12-23 | For controlling the method and apparatus of driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611208646.4A CN108242892A (en) | 2016-12-23 | 2016-12-23 | For controlling the method and apparatus of driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108242892A true CN108242892A (en) | 2018-07-03 |
Family
ID=62704206
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611208646.4A Pending CN108242892A (en) | 2016-12-23 | 2016-12-23 | For controlling the method and apparatus of driving circuit |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06165523A (en) * | 1992-11-17 | 1994-06-10 | Fuji Electric Co Ltd | Detecting apparatus for deterioration of smoothing capacitor for inverter |
| CN201069461Y (en) * | 2007-06-18 | 2008-06-04 | 深圳市中传电气技术有限公司 | A life monitoring device for aluminum electrolysis capacitor in the frequency converter |
| CN101652725A (en) * | 2007-03-29 | 2010-02-17 | 三洋电机株式会社 | Electric device |
| US7706153B2 (en) * | 2005-09-07 | 2010-04-27 | Kabushiki Kaisha Toshiba | DC-DC Converter |
| CN103158574A (en) * | 2011-12-19 | 2013-06-19 | 马自达汽车株式会社 | Control device of vehicle-onboard electric source |
| CN203275604U (en) * | 2013-04-26 | 2013-11-06 | 上海市城市排水有限公司 | Preventive safety detector of high-voltage frequency conversion speed adjusting device |
-
2016
- 2016-12-23 CN CN201611208646.4A patent/CN108242892A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06165523A (en) * | 1992-11-17 | 1994-06-10 | Fuji Electric Co Ltd | Detecting apparatus for deterioration of smoothing capacitor for inverter |
| US7706153B2 (en) * | 2005-09-07 | 2010-04-27 | Kabushiki Kaisha Toshiba | DC-DC Converter |
| CN101652725A (en) * | 2007-03-29 | 2010-02-17 | 三洋电机株式会社 | Electric device |
| CN201069461Y (en) * | 2007-06-18 | 2008-06-04 | 深圳市中传电气技术有限公司 | A life monitoring device for aluminum electrolysis capacitor in the frequency converter |
| CN103158574A (en) * | 2011-12-19 | 2013-06-19 | 马自达汽车株式会社 | Control device of vehicle-onboard electric source |
| CN203275604U (en) * | 2013-04-26 | 2013-11-06 | 上海市城市排水有限公司 | Preventive safety detector of high-voltage frequency conversion speed adjusting device |
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Application publication date: 20180703 |