CN204290341U - Energy conversion device - Google Patents
Energy conversion device Download PDFInfo
- Publication number
- CN204290341U CN204290341U CN201420831384.7U CN201420831384U CN204290341U CN 204290341 U CN204290341 U CN 204290341U CN 201420831384 U CN201420831384 U CN 201420831384U CN 204290341 U CN204290341 U CN 204290341U
- Authority
- CN
- China
- Prior art keywords
- motor driver
- energy
- voltage
- bus
- energy storage
- 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.)
- Active
Links
Classifications
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
Abstract
The utility model discloses a kind of energy conversion device, comprise energy releasing device and energy absorbing device; Energy releasing device is in parallel with the DC bus of motor driver, and connect outside energy storage device, for when motor driver is in motoring condition, according to the change in voltage on the DC bus of motor driver, by the delivery of electrical energy that stores in outside energy storage device in motor driver; Energy absorbing device is in parallel with the DC bus of motor driver, and connect outside energy storage device, for when motor driver is in generating state, according to the change in voltage on the DC bus of motor driver, the delivery of electrical energy produced by motor driver is to outside energy storage device.The energy conversion device that the utility model provides, achieves the high speed energy conversion between motor driver and outside energy storage device, meet motor and carry out high-speed power generation and electronic switching, and transient absorption and release is compared with the need of work of macro-energy.
Description
Technical field
The utility model relates to technical field of motors, particularly relates to a kind of energy conversion device.
Background technology
Motor, when four quadrant running, often needs electronic and generating conversion mutually.When electronic, motor needs to absorb electric energy; When generating electricity, motor can discharge electric energy.Traditional energy conversion only has feedback function, or rectification and feedback function is combined, and the used time of rectification and feedback handoff procedure is long, and will meet certain voltage conditions and could work.Therefore, traditional energy conversion being applicable to motor cannot carry out high speed energy conversion, is difficult to meet motor and carries out high-speed power generation and electronic switching, and transient absorption and release are compared with the need of work of macro-energy.
Utility model content
Based on this, be necessary the defect for prior art and deficiency, a kind of energy conversion device being applicable to machine operation is provided, to realize high speed energy conversion, meet motor and carry out high-speed power generation and electronic switching, and transient absorption and release are compared with the need of work of macro-energy.
For realizing the energy conversion device that the utility model object provides, comprise energy releasing device and energy absorbing device;
Described energy releasing device is in parallel with the DC bus of motor driver, and connect outside energy storage device, for when described motor driver is in motoring condition, according to the change in voltage on the DC bus of described motor driver, by the delivery of electrical energy that stores in described outside energy storage device to described motor driver;
Described energy absorbing device is in parallel with the DC bus of described motor driver, and connect described outside energy storage device, for when described motor driver is in generating state, according to the change in voltage on the DC bus of described motor driver, in the delivery of electrical energy that described motor driver is produced to described outside energy storage device.
Wherein, described outside energy storage device is three phase network or DC energy storage device.
Further, described DC energy storage device is electric capacity or storage battery.
Wherein, described motor driver is DC motor driver or AC motor drive.
Wherein in an embodiment, described energy releasing device is AC/DC device, and described outside energy storage device is three phase network;
The voltage of described AC/DC device on the DC bus monitoring motor driver, and the voltage on the DC bus of described motor driver is prescribed a time limit lower than the lower of described motor driver normal working voltage, three-phase alternating current in described three phase network is converted to the direct current that described motor driver needs, transfer to described motor driver.
Wherein in an embodiment, described energy absorbing device comprises the DC/DC device, the first capacitive energy storage device and the DC/AC device that are electrically connected successively;
A described DC/DC device is in parallel with the DC bus of described motor driver, voltage on the DC bus monitoring described motor driver, and the voltage on the DC bus of described motor driver is prescribed a time limit higher than the upper of described motor driver normal working voltage, is discharged into by the direct current that described motor driver exports in described first capacitive energy storage device;
Described first capacitive energy storage device is for absorbing the direct current of a described DC/DC device release;
A described DC/AC device connects described three phase network, for converting the direct current in described first capacitive energy storage device to three-phase alternating current, transfers in described three phase network.
Wherein in an embodiment, described energy absorbing device comprises the 2nd DC/DC device and the 2nd DC/AC device;
Described 2nd DC/DC device and the electrical connection of the 2nd DC/AC device;
Described 2nd DC/DC device is in parallel with the DC bus of described motor driver, voltage on the DC bus monitoring described motor driver, voltage on the DC bus of described motor driver is prescribed a time limit higher than the upper of described motor driver normal working voltage, is discharged into by the direct current that described motor driver sends in described 2nd DC/AC device;
Described 2nd DC/AC device connects described three phase network, converts three-phase alternating current to, transfer in described three phase network for the direct current exported by described 2nd DC/DC device.
Wherein in an embodiment, described energy absorbing device is the 3rd DC/AC device;
The voltage of described 3rd DC/AC device on the DC bus monitoring described motor driver, voltage on the DC bus of described motor driver is prescribed a time limit higher than the upper of described motor driver normal working voltage, convert the direct current that described motor driver sends to three-phase alternating current, transfer in described three phase network.
Wherein in an embodiment, described energy releasing device is the 3rd DC/DC device, and described outside energy storage device is DC energy storage device;
The voltage of described 3rd DC/DC device on the DC bus monitoring motor driver, voltage on the DC bus of described motor driver is prescribed a time limit lower than the lower of described motor driver normal working voltage, convert the direct current in described DC energy storage device to direct current required for described motor driver, transfer in described motor driver.
Wherein in an embodiment, described energy absorbing device comprises the 4th DC/DC device, the second capacitive energy storage device and the 5th DC/DC device that are electrically connected successively;
Described 4th DC/DC device is in parallel with the DC bus of described motor driver, voltage on the DC bus monitoring described motor driver, voltage on the DC bus of described motor driver is prescribed a time limit higher than the upper of described motor driver normal working voltage, is discharged into by the direct current that described motor driver exports in described second capacitive energy storage device;
Described second capacitive energy storage device is for absorbing the direct current of described 4th DC/DC device release;
Described 5th DC/DC device connects described DC energy storage device, for the direct current in described second capacitive energy storage device being converted to the direct current of described DC energy storage device, transfers in described DC energy storage device.
The beneficial effects of the utility model: the energy conversion device that the utility model provides, by detecting the voltage on the DC bus of motor driver, energy releasing device and energy absorbing device is adopted to be operated in the electronic link different with generating two respectively, there is provided energy when motor driver is operated in motoring condition, absorb energy when motor driver is operated in generating state.It achieves high speed energy conversion between motor driver and outside energy storage device, meet motor and carry out high-speed power generation and electronic switching, and transient absorption and release is compared with the need of work of macro-energy.
Accompanying drawing explanation
In order to make the object of energy conversion device of the present utility model, technical scheme and advantage clearly understand, below in conjunction with concrete drawings and the specific embodiments, energy conversion device of the present utility model is further elaborated.
Fig. 1 is the structural representation of energy conversion device of the present utility model;
Fig. 2 is the structural representation of the embodiment one of the energy conversion device of the present utility model shown in Fig. 1;
Fig. 3 is the structural representation of the embodiment two of the energy conversion device of the present utility model shown in Fig. 1;
Fig. 4 is the structural representation of the embodiment three of the energy conversion device of the present utility model shown in Fig. 1;
Fig. 5 is the structural representation of the embodiment four of the energy conversion device of the present utility model shown in Fig. 1.
Embodiment
The utility model is described in detail below in conjunction with embodiment.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
As shown in Figure 1, the energy conversion device 100 that the utility model provides is in parallel with the DC bus of motor driver 200, and connects outside energy storage device 300.When motor driver 200 carries out electronic and generating, the voltage on the DC bus of motor driver 200 monitored by the energy conversion device 100 that the utility model provides, according to the change in voltage on the DC bus of motor driver 200, independently carry out absorption and the release of energy, the electric energy in the electric energy produce motor driver 200 and outside energy storage device 300 is changed.
Particularly, the energy conversion device 100 that the utility model provides mainly comprises energy releasing device 110 and energy absorbing device 120.Energy releasing device 110 and energy absorbing device 120 are connected outside energy storage device 300 respectively, and in parallel with the DC bus of motor driver 200 respectively, the voltage on the DC bus of monitoring motor driver 200, the two separate work.
Wherein, energy releasing device 110, can according to the change in voltage on the DC bus of motor driver when motor driver is in motoring condition, by the delivery of electrical energy that stores in outside energy storage device in motor driver.Energy absorbing device 120, can according to the change in voltage on the DC bus of motor driver when motor driver is in generating state, and the delivery of electrical energy produced by motor driver is to outside energy storage device.
Such as, when motor driver 200 normally works, the voltage range on its DC bus is V1 ~ V2 (V1<V2).
When motor driver 200 is in motoring condition, need to absorb energy from outside.Energy releasing device 110 monitors the voltage on the DC bus of motor driver 200, when the voltage on this DC bus is lower than V1, energy releasing device 110 is started working, it absorbs energy from outside energy storage device, and this power conversion is become and the electric energy required for motor driver 200, provide energy by this DC bus to motor driver 200.In this process, energy absorbing device 120 does not work.
When motor driver 200 is in generating state, the voltage on the DC bus of motor driver 200 can raise.When the voltage on DC bus is higher than V1 or V1+ △ V1 ((V1+ △ V1) <V2), energy releasing device 110 quits work, and now energy absorbing device 120 does not also work.
When the voltage of DC bus is more than V2, energy absorbing device 120 is started working, its voltage that voltage transitions on DC bus of motor driver 200 is become to mate with outside energy storage device 300, and by fault offset in outside energy storage device 300, make the voltage on the DC bus of motor driver 200 maintain V2.In this process, energy releasing device 110 does not participate in work.When voltage on the DC bus of motor driver 200 is lower than V2 or V2-△ V2 ((V1+ △ V1) < (V2-△ V2)), energy absorbing device 120 quits work, and now energy releasing device 110 does not also participate in work.
Outside energy storage device 300 in the utility model can be three phase network or DC energy storage device.Wherein, DC energy storage device can be electric capacity or storage battery etc.Motor driver 200 can be DC motor driver, also can be AC motor drive.
Particularly, when the outside energy storage device 300 that the energy conversion device 100 that the utility model provides connects is for three phase network, energy releasing device 110 can be AC/DC device (AC/DC transducer).
This AC/DC device can monitor the voltage on the DC bus of motor driver 100, and the voltage on the DC bus of motor driver 100 is prescribed a time limit lower than the lower of motor driver 100 normal working voltage, three-phase alternating current in three phase network is converted to the direct current that motor driver 100 needs, transfer to motor driver 100.
Correspondingly, when the outside energy storage device 300 that the energy conversion device 100 that the utility model provides connects is for three phase network, energy absorbing device 120 can for a DC/DC device (electric pressure converter is equivalent to transformer), the first capacitive energy storage device and the DC/AC device (straight/a-c transducer) be electrically connected successively.
Wherein, one DC/DC device is in parallel with the DC bus of motor driver 100, it can monitor the voltage on the DC bus of motor driver 100, and the voltage on the DC bus of motor driver 100 is prescribed a time limit higher than the upper of motor driver 100 normal working voltage, is discharged in the first capacitive energy storage device by the direct current that motor driver 100 exports.
This first capacitive energy storage device can transient absorption the one DC/DC device release direct current energy.
One DC/AC device connects three phase network, it can monitor the voltage at the first capacitive energy storage device two ends, after the voltage at the first capacitive energy storage device two ends reaches its operating voltage, convert the direct current in the first capacitive energy storage device to three-phase alternating current, transfer in three phase network.
Correspondingly, when the outside energy storage device 300 that the energy conversion device 100 that the utility model provides connects is for three phase network, energy absorbing device 120 can also be the 2nd DC/DC device of electrical connection and the 2nd DC/AC device.
Wherein, 2nd DC/DC device is in parallel with the DC bus of motor driver 100, it can monitor the voltage on the DC bus of motor driver 100, voltage on the DC bus of motor driver 100 is prescribed a time limit higher than the upper of motor driver 100 normal working voltage, is discharged into by the direct current that motor driver 100 sends in the 2nd DC/AC device.
2nd DC/AC device connects three phase network, and it can monitor the output voltage of the 2nd DC/DC device.After the voltage at the first capacitive energy storage device two ends reaches its operating voltage, the 2nd DC/AC device is started working, and converts the direct current that the 2nd DC/DC device exports to three-phase alternating current, transfers in three phase network.
Correspondingly, when the outside energy storage device 300 that the energy conversion device 100 that the utility model provides connects is for three phase network, energy absorbing device 120 can also be the 3rd DC/AC device.
3rd DC/AC device can monitor the voltage on the DC bus of motor driver 100, voltage on the DC bus of motor driver 100 is prescribed a time limit higher than the upper of motor driver 100 normal working voltage, convert the direct current that motor driver 100 sends to three-phase alternating current, transfer in three phase network.
Particularly, when the outside energy storage device 300 that the energy conversion device 100 that the utility model provides connects is for DC energy storage device, energy releasing device 110 can be the 3rd DC/DC device.
3rd DC/DC device can monitor the voltage on the DC bus of motor driver 100, voltage on the DC bus of motor driver 100 is prescribed a time limit lower than the lower of motor driver 100 normal working voltage, convert the direct current in DC energy storage device to direct current required for motor driver 100, transfer in motor driver 100.
Correspondingly, when the outside energy storage device 300 that the energy conversion device 100 that the utility model provides connects is for DC energy storage device, energy absorbing device 120 can for the 4th DC/DC device, the second capacitive energy storage device and the 5th DC/DC device be electrically connected successively.
4th DC/DC device is in parallel with the DC bus of motor driver 100, it can monitor the voltage on the DC bus of motor driver 100, voltage on the DC bus of motor driver 100 is prescribed a time limit higher than the upper of motor driver 100 normal working voltage, is discharged in the second capacitive energy storage device by the direct current that motor driver 100 exports.
This second capacitive energy storage device can transient absorption the 4th DC/DC device release direct current energy.
5th DC/DC device connects DC energy storage device, it can monitor the voltage at the second capacitive energy storage device two ends, after the voltage at the second capacitive energy storage device two ends reaches its operating voltage, convert the direct current in the second capacitive energy storage device to direct current required for DC energy storage device, transfer in DC energy storage device.
The energy conversion device 100 that the utility model provides is by detecting the voltage on the DC bus of motor driver 200, energy releasing device 110 and energy absorbing device 120 is adopted to be operated in the electronic link different with generating two respectively, there is provided energy when motor driver 200 is operated in motoring condition, absorb energy when motor driver 200 is operated in generating state.It achieves high speed energy conversion between motor driver 200 and outside energy storage device 300, meet motor and carry out high-speed power generation and electronic switching, and transient absorption and release is compared with the need of work of macro-energy.
The kind of the outside energy storage device that the energy conversion device that the utility model provides specifically connects according to it, can have numerous embodiments, specific implementation procedure declaration is as follows:
Embodiment one
The energy conversion device that the present embodiment provides can realize high speed energy conversion between motor driver 200 and three phase network 310.
See Fig. 2, the energy conversion device that the utility model provides its primarily of AC/DC device the 11, one DC/DC device 12, first capacitive energy storage device 13 and these four, a DC/AC device 14 part composition.Wherein, an AC/DC device 11 is energy releasing device.One DC/DC device 12, first capacitive energy storage device 13 and these three parts of a DC/AC device 14 constitute energy absorbing device.
One AC/DC device 11 monitors the voltage on the DC bus of motor driver 200, and voltage range when motor driver 200 normally works on DC bus is V1 ~ V2 (V1<V2).When motor driver 200 is in motoring condition, need to absorb energy from outside.When the voltage on its DC bus is lower than V1, an AC/DC device 11 converts three-phase alternating current to direct current, and energy is supplied to motor driver 200 by this DC bus; When the voltage on this DC bus is higher than V1 or V1+ △ V1 (V1+ △ V1<V2), an AC/DC device 11 quits work.
One DC/DC device 12 monitors the voltage on the DC bus of motor driver 200.When motor driver 200 is in generating state, the voltage on its DC bus can raise.When the voltage on this DC bus is more than V2, one DC/DC device 12 is started working, it is make the voltage on the DC bus of motor driver 200 maintain V2 or lower than V2, with the maximum fan-out capability work of power device, the energy sent by motor driver 200 carries out changing and is discharged in the first capacitive energy storage device 13.Wherein, a DC/DC device 12 is transformed into the voltage in the first capacitive energy storage device 13 is V3 (V3 can be any one magnitude of voltage in V3≤V1, V1<V3<V2, V2≤V3).
First capacitive energy storage device 13 is super capacitor, and it can the energy that discharged by a DC/DC device 12 of transient absorption.
One DC/AC device 14 monitors the voltage at the first capacitive energy storage device 13 two ends.When the voltage at the first capacitive energy storage device 13 two ends is higher than V4 (V4 is the operating voltage of a DC/AC device 14), one DC/AC device 14 is started working, by the converting direct-current power into alternating-current power that the first capacitive energy storage device 13 exports, be discharged in three phase network 310.When the voltage at the first capacitive energy storage device 13 two ends is lower than V4 or V4-△ V4, a DC/AC device 14 quits work.
Embodiment two
The energy conversion device that the present embodiment provides can realize high speed energy conversion between motor driver 200 and three phase network 310.
See Fig. 3, the energy conversion device that the utility model provides its primarily of the 2nd AC/DC device 21, the 2nd DC/DC device 22, these three, the 2nd DC/AC device 23 part composition.Wherein, the 2nd AC/DC device 21 is energy releasing device, and the 2nd DC/DC device 22 and these two parts of the 2nd DC/AC device 23 constitute energy absorbing device.
2nd AC/DC device 21 monitors the voltage on the DC bus of motor driver 200, and voltage range when motor driver 200 normally works on DC bus is V1 ~ V2 (V1<V2).When motor driver 200 is in motoring condition, need to absorb energy from outside.When the voltage on its DC bus is lower than V1, the 2nd AC/DC device 21 converts three-phase alternating current to direct current, and energy is supplied to motor driver 200 by this DC bus; When the voltage on this DC bus is higher than V1 or V1+ △ V1 (V1+ △ V1<V2), the 2nd AC/DC device 21 quits work.
2nd DC/DC device 22 monitors the voltage on the DC bus of motor driver 200.When motor driver 200 is in generating state, the voltage on its DC bus can raise.When the voltage on this DC bus is more than V2, one DC/DC device 12 is started working, it is make the voltage on the DC bus of motor driver 200 maintain V2 or lower than V2, with the maximum fan-out capability work of power device, the energy sent by motor driver 200 carries out changing and is discharged in the 2nd DC/AC device 23.Wherein, the 2nd DC/DC device 22 is transformed into the voltage in the 2nd DC/AC device 23 is V4.
2nd DC/AC device 23 monitors the output voltage of the 2nd DC/DC device 22.When the output voltage of the 2nd DC/DC device 22 is higher than V4 (V4 is the operating voltage of the 2nd DC/AC device 23), 2nd DC/AC device 23 is started working, by the converting direct-current power into alternating-current power of the output of the 2nd DC/DC device 22, be discharged in three phase network 310.When the voltage at the 2nd DC/AC device 23 two ends is lower than V4 or V4-△ V4, the 2nd DC/AC device 23 quits work.
Embodiment three
The energy conversion device that the present embodiment provides can realize high speed energy conversion between motor driver 200 and three phase network 310.
See Fig. 4, the energy conversion device that the utility model provides its primarily of the 3rd AC/DC device 31, these two, the 3rd DC/AC device 32 part composition.Wherein, the 3rd AC/DC device 31 is energy releasing device, and the 3rd DC/AC device 32 is energy absorbing device.
3rd AC/DC device 31 monitors the voltage on the DC bus of motor driver 200, and voltage range when motor driver 200 normally works on DC bus is V1 ~ V2 (V1<V2).When motor driver 200 is in motoring condition, need to absorb energy from outside.When the voltage on its DC bus is lower than V1, the 3rd AC/DC device 31 converts three-phase alternating current to direct current, and energy is supplied to motor driver 200 by this DC bus; When the voltage on this DC bus is higher than V1 or V1+ △ V1 (V1+ △ V1<V2), the 3rd AC/DC device 31 quits work.
3rd DC/AC device 32 monitors the voltage on the DC bus of motor driver 200.When motor driver 200 is in generating state, the voltage on its DC bus can raise.When the voltage on this DC bus is more than V2,3rd DC/AC device 32 is started working, it is make the voltage on the DC bus of motor driver 200 maintain V2 or lower than V2, with the maximum fan-out capability work of power device, the energy sent by motor driver 200 carries out changing and is discharged in three phase network 310.When the voltage on the DC bus when motor driver 200 is lower than V2 or V2-△ V2 (V1+ △ V1<V2-△ V2), the 3rd DC/AC device 32 quits work.
Embodiment four
The energy conversion device that the present embodiment provides can realize high speed energy conversion between motor driver 200 and DC energy storage device 320.
See Fig. 5, the energy conversion device that the utility model provides its primarily of the 3rd DC/DC device 41, the 4th DC/DC device 42, second capacitive energy storage device 43 and these four, the 5th DC/DC device 44 part composition.Wherein, the 3rd DC/DC device 41 is energy releasing device.4th DC/DC device 42, second capacitive energy storage device 43 and these three parts of the 5th DC/DC device 44 constitute energy absorbing device.
3rd DC/DC device 41 monitors the voltage on the DC bus of motor driver 200, and voltage range when motor driver 200 normally works on DC bus is V1 ~ V2 (V1<V2).When motor driver 200 is in motoring condition, need to absorb energy from outside.When the voltage on its DC bus is lower than V1, direct current (voltage is V5) in DC energy storage device 320 is converted to the direct current (voltage be V1 ~ V2) of motor driver 200 normally required for work by the 3rd DC/DC device 41, and the energy in DC energy storage device 320 is passed to motor driver 200 by this DC bus; When the voltage on this DC bus is higher than V1 or V1+ △ V1 (V1+ △ V1<V2), the 3rd DC/DC device 41 quits work.
4th DC/DC device 42 monitors the voltage on the DC bus of motor driver 200.When motor driver 200 is in generating state, the voltage on its DC bus can raise.When the voltage on this DC bus is more than V2, one DC/DC device 12 is started working, it is make the voltage on the DC bus of motor driver 200 maintain V2 or lower than V2, with the maximum fan-out capability work of power device, the energy sent by motor driver 200 carries out changing and is discharged in the second capacitive energy storage device 43.Wherein, the 4th DC/DC device 42 is transformed into the voltage in the second capacitive energy storage device 43 is V3 (V3 can be any one magnitude of voltage in V3≤V1, V1<V3<V2, V2≤V3).
Second capacitive energy storage device 43 is super capacitor, and it can the energy that discharged by the 4th DC/DC device 42 of transient absorption.
5th DC/DC device 44 monitors the voltage at the second capacitive energy storage device 43 two ends.When the voltage at the second capacitive energy storage device 43 two ends is higher than V4 (V4 is the operating voltage of the 5th DC/DC device 44), 5th DC/DC device 44 is started working, the voltage V4 at the second capacitive energy storage device 43 two ends is converted to the nominal input voltage V5 of DC energy storage device 320, the stored energy sent by motor driver 200 is in DC energy storage device 320.When the voltage at the second capacitive energy storage device 43 two ends is lower than V6 (V6 be the 5th DC/DC device 44 quit work voltage), the 5th DC/DC device 44 quits work.
Above embodiment only have expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (10)
1. an energy conversion device, is characterized in that, comprises energy releasing device and energy absorbing device;
Described energy releasing device is in parallel with the DC bus of motor driver, and connect outside energy storage device, for when described motor driver is in motoring condition, according to the change in voltage on the DC bus of described motor driver, by the delivery of electrical energy that stores in described outside energy storage device to described motor driver;
Described energy absorbing device is in parallel with the DC bus of described motor driver, and connect described outside energy storage device, for when described motor driver is in generating state, according to the change in voltage on the DC bus of described motor driver, in the delivery of electrical energy that described motor driver is produced to described outside energy storage device.
2. energy conversion device according to claim 1, is characterized in that, described outside energy storage device is three phase network or DC energy storage device.
3. energy conversion device according to claim 2, is characterized in that, described DC energy storage device is electric capacity or storage battery.
4. energy conversion device according to claim 1, is characterized in that, described motor driver is DC motor driver or AC motor drive.
5. the energy conversion device according to any one of Claims 1-4, is characterized in that, described energy releasing device is AC/DC device, and described outside energy storage device is three phase network;
The voltage of described AC/DC device on the DC bus monitoring motor driver, and the voltage on the DC bus of described motor driver is prescribed a time limit lower than the lower of described motor driver normal working voltage, three-phase alternating current in described three phase network is converted to the direct current that described motor driver needs, transfer to described motor driver.
6. energy conversion device according to claim 5, is characterized in that, described energy absorbing device comprises the DC/DC device, the first capacitive energy storage device and the DC/AC device that are electrically connected successively;
A described DC/DC device is in parallel with the DC bus of described motor driver, voltage on the DC bus monitoring described motor driver, and the voltage on the DC bus of described motor driver is prescribed a time limit higher than the upper of described motor driver normal working voltage, is discharged into by the direct current that described motor driver exports in described first capacitive energy storage device;
Described first capacitive energy storage device is for absorbing the direct current of a described DC/DC device release;
A described DC/AC device connects described three phase network, for converting the direct current in described first capacitive energy storage device to three-phase alternating current, transfers in described three phase network.
7. energy conversion device according to claim 5, is characterized in that, described energy absorbing device comprises the 2nd DC/DC device and the 2nd DC/AC device;
Described 2nd DC/DC device and the electrical connection of the 2nd DC/AC device;
Described 2nd DC/DC device is in parallel with the DC bus of described motor driver, voltage on the DC bus monitoring described motor driver, voltage on the DC bus of described motor driver is prescribed a time limit higher than the upper of described motor driver normal working voltage, is discharged into by the direct current that described motor driver sends in described 2nd DC/AC device;
Described 2nd DC/AC device connects described three phase network, converts three-phase alternating current to, transfer in described three phase network for the direct current exported by described 2nd DC/DC device.
8. energy conversion device according to claim 5, is characterized in that, described energy absorbing device is the 3rd DC/AC device;
The voltage of described 3rd DC/AC device on the DC bus monitoring described motor driver, voltage on the DC bus of described motor driver is prescribed a time limit higher than the upper of described motor driver normal working voltage, convert the direct current that described motor driver sends to three-phase alternating current, transfer in described three phase network.
9. the energy conversion device according to any one of Claims 1-4, is characterized in that, described energy releasing device is the 3rd DC/DC device, and described outside energy storage device is DC energy storage device;
The voltage of described 3rd DC/DC device on the DC bus monitoring motor driver, voltage on the DC bus of described motor driver is prescribed a time limit lower than the lower of described motor driver normal working voltage, convert the direct current in described DC energy storage device to direct current required for described motor driver, transfer in described motor driver.
10. energy conversion device according to claim 9, is characterized in that, described energy absorbing device comprises the 4th DC/DC device, the second capacitive energy storage device and the 5th DC/DC device that are electrically connected successively;
Described 4th DC/DC device is in parallel with the DC bus of described motor driver, voltage on the DC bus monitoring described motor driver, voltage on the DC bus of described motor driver is prescribed a time limit higher than the upper of described motor driver normal working voltage, is discharged into by the direct current that described motor driver exports in described second capacitive energy storage device;
Described second capacitive energy storage device is for absorbing the direct current of described 4th DC/DC device release;
Described 5th DC/DC device connects described DC energy storage device, for the direct current in described second capacitive energy storage device being converted to the direct current of described DC energy storage device, transfers in described DC energy storage device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420831384.7U CN204290341U (en) | 2014-12-24 | 2014-12-24 | Energy conversion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420831384.7U CN204290341U (en) | 2014-12-24 | 2014-12-24 | Energy conversion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204290341U true CN204290341U (en) | 2015-04-22 |
Family
ID=52873471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420831384.7U Active CN204290341U (en) | 2014-12-24 | 2014-12-24 | Energy conversion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204290341U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466995A (en) * | 2014-12-24 | 2015-03-25 | 中国科学院宁波材料技术与工程研究所 | Energy conversion device |
-
2014
- 2014-12-24 CN CN201420831384.7U patent/CN204290341U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466995A (en) * | 2014-12-24 | 2015-03-25 | 中国科学院宁波材料技术与工程研究所 | Energy conversion device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103825470A (en) | Four-quadrant frequency converter | |
| CN104009497B (en) | A kind of LVRT Capability of Wind Turbine Generator and active power filter compensating device and changing method | |
| CN101299572A (en) | Pass-by apparatus for high voltage frequency transformer | |
| CN103023344A (en) | Universal smart grid power electronic device | |
| CN104466995A (en) | Energy conversion device | |
| CN103368410B (en) | Traction convertor | |
| CN103427729A (en) | Rod pumped well group control system based on direct current bus | |
| CN111478616A (en) | Subway traction power supply system and bidirectional converter device | |
| CN204144996U (en) | A kind of multiple control lift energy feedback net arrangement with super capacitor | |
| CN203119770U (en) | Multi-motor-driving frequency-converting and energy-saving device based on common DC bus and pumping unit | |
| CN204290341U (en) | Energy conversion device | |
| CN201478838U (en) | Auxiliary power supply device capable of being connected in parallel | |
| CN201690400U (en) | Frequency-conversion soft-start hybrid power cabinet | |
| CN105024396A (en) | Energy feedback frequency converter | |
| CN204720986U (en) | The compound circuit of a kind of integrated rectification, active power filtering and energy back braking function | |
| CN201726156U (en) | Feedback energy-saving device with variable-frequency motor | |
| CN202888951U (en) | Emergency power supply device reconstructed through frequency converter | |
| CN103516046B (en) | Mobile substation photovoltaic and super capacitor AC/DC integrated power supply | |
| CN201663041U (en) | High-impedance transformer for solar power generation | |
| CN201629676U (en) | Elevator matrix frequency conversion device | |
| CN202334414U (en) | Novel speed regulating device for switched reluctance motor | |
| CN201830134U (en) | Frequency converter with bypass | |
| CN202143022U (en) | High power brushless DC motor control device for well-drilling winch in oil field | |
| CN201319509Y (en) | Full digital control three-phase input and output power frequency online UPS power supply | |
| CN204304454U (en) | A kind of dual controller SVG device with 3G function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |