CN109687397A - A kind of power electronics direct current protecting device of three phase full bridge topology - Google Patents
A kind of power electronics direct current protecting device of three phase full bridge topology Download PDFInfo
- Publication number
- CN109687397A CN109687397A CN201910000029.2A CN201910000029A CN109687397A CN 109687397 A CN109687397 A CN 109687397A CN 201910000029 A CN201910000029 A CN 201910000029A CN 109687397 A CN109687397 A CN 109687397A
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- CN
- China
- Prior art keywords
- electronic devices
- direct current
- power electronic
- power
- full bridge
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- 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
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/1213—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for DC-DC converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
- H02H3/202—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage for dc systems
Abstract
The invention discloses a kind of power electronics direct current protecting devices of three phase full bridge topology; the protection problem being able to solve in direct current system; using power electronic devices as solid-state switch; direct current reactor limitation current changing rate is sealed in the power electronics direct current protecting device circuit of three phase full bridge topology, utilizes diode afterflow when power electronic devices turns off in circuit；The present invention can be set on the primary circuit of direct current power system, play the role of through-flow, isolation and protection.
Description
Technical field
The invention belongs to technical field of electric power, and in particular to a kind of power electronics direct current protecting dress of three phase full bridge topology
It sets, the protection suitable for direct current system.
Background technique
As electric propulsion of warship power is constantly promoted, ship electric network short circuit current level is improved rapidly, existing mother
Protective device such as oily bus connection switch, air bus connection switch, movement speed is slow, and arc extinguishing is difficult, and rupturing capacity is restricted, it is difficult to
Meet the breaking capacity requirement that increased dramatically.
Power electronics direct current protecting device, as contactless load control unit, overcomes machinery using power electronic devices
The shortcomings that formula mother screen, will not generate electric arc in system turn off process, extend switch life, avoid causing during switch on-off
Switching overvoltage, the dielectric level of equipment is greatly reduced, since misoperation causes equipment damage that can also greatly reduce.
Simultaneously as the make-and-break time of power electronic devices is in microsecond even nanosecond, therefore power electronics direct current protecting
The movement speed of device greatly improves.The power electronics direct current protecting device can greatly improve naval vessel direct current networking combined power
The reliability and safety of system.
Summary of the invention
The purpose of the present invention is designing a kind of power electronics direct current protecting device of three phase full bridge topology, power electronics is utilized
Movement speed, the reliability, safety of technology raising dc switch.
The technical solution adopted by the present invention to solve the technical problems is: a kind of power electronics direct current of three phase full bridge topology
Protective device, including being located at two positive and negative direct current busbars of the left and right sides and being connected between DC master row positive and negative anodes
Support Capacitor C1 and C2, two groups of three phase full bridge (PCC) powers and three direct currents being connected between two three-phase full bridge power components
Anti- device, direct current reactor between DC master row positive and negative anodes with the current changing rate di/dt of limit circuit, one group three of left side
Phase full bridge power component is made of power electronic devices T1~T6, concatenated power electronic devices T1, T2, concatenated power electronics
Device T3, T4 and concatenated power electronic devices T5, T6 are in parallel with Support Capacitor C1, another group of three phase full bridge power on right side
Component is made of power electronic devices T7~T12, concatenated power electronic devices T7, T8, concatenated power electronic devices T9,
T10 and concatenated power electronic devices T11, T12 are in parallel with Support Capacitor C2, and a direct current reactor one end is connected to electric power
The other end is connected between power electronic devices T7, T8 between electronic device T5, T6, and a direct current reactor one end is connected to electricity
The other end is connected between power electronic devices T9, T10 between power electronic device T3, T4, direct current reactor one end connection
The other end is connected between power electronic devices T11, T12 between power electronic devices T1, T2, the power electronic devices
The upper inverse parallel of T1~T12 has diode D1~D12, turns off moment power electronic devices T1~T8 whole locking pulse, direct current
The circuit afterflow that electric current on anti-device is constituted by diode D1~D12, direct current reactor and Support Capacitor C1 and C2, positive normal open
Stream allows electric current Two-phase flow.
It further, can when carrying out closed procedure in the biggish situation of voltage phase difference of the device two sides DC master row
Precharge of the unilateral bus to another side bus is realized by the chopper that power electronic devices and direct current reactor are constituted.
Further, the power electronic devices is switching tube.
It further, further include control system；The control system passes through the electric current and two on measurement direct current reactor
The voltage of side Support Capacitor C1 and C2, work as generation: a, and electric current is more than limits value；B, the variation road of electric current are more than limits value；C, electricity
Pressing pressure difference is more than limits value；For the moment, protective device movement disconnects two sides connection to above-mentioned three kinds of situations.
The beneficial effect comprise that:
The present invention is used as solid-state switch using power electronic devices, and direct current reactor limitation current changing rate is sealed in circuit, is led
Anti-paralleled diode afterflow in switch OFF that electric and electronic power component is utilized in circuit, can be set to direct current power system
On the primary circuit of system, play the role of through-flow, isolation and protection；It is realized by the chopper that power electronic devices is constituted unilateral
Precharge of the bus to another side bus, judge the decision condition of short trouble for current peak, two sides voltage pressure difference and
The exception of any one condition will lead to protective device movement in the change rate of electric current.
Detailed description of the invention
Fig. 1 is the topological diagram of apparatus of the present invention.
Fig. 2 is apparatus of the present invention electric current side flow circuits from left to right；
Fig. 3 is the continuous current circuit that apparatus of the present invention electric current original direction is from left to right side.
Specific embodiment
The present invention is described in more detail with reference to the accompanying drawing.
Shown in referring to Fig.1, the present invention discloses a kind of power electronics direct current protecting device of three phase full bridge topology, the device by
Positioned at two positive and negative direct current busbars of the left and right sides, Support Capacitor C1 and C2, direct current reactor, two groups of three phase full bridge (PCC) powers
And its control system is constituted.Three direct current reactors are connected between two groups of three phase full bridge (PCC) powers, one group of three-phase in left side
Full bridge power component is made of power electronic devices T1~T6, concatenated power electronic devices T1, T2, concatenated power electronics device
Part T3, T4 and concatenated power electronic devices T5, T6 are in parallel with Support Capacitor C1, another group of three phase full bridge power packages on right side
Part is made of power electronic devices T7~T12, concatenated power electronic devices T7, T8, concatenated power electronic devices T9, T10
In parallel with Support Capacitor C2 with concatenated power electronic devices T11, T12, a direct current reactor one end is connected to electric power electricity
The other end is connected between power electronic devices T7, T8 between sub- device T5, T6, and a direct current reactor one end is connected to electric power
The other end is connected between power electronic devices T9, T10 between electronic device T3, T4, and a direct current reactor one end is connected to
The other end is connected between power electronic devices T11, T12 between power electronic devices T1, T2, the power electronic devices T1
The upper inverse parallel of~T12 has diode D1~D12, turns off moment power electronic devices T1~T8 whole locking pulse, direct current reactance
The circuit afterflow that electric current on device is constituted by diode D1~D12, direct current reactor and Support Capacitor C1 and C2, it is normal through-flow
Allow electric current Two-phase flow.
When working normally protective device gate-dividing state of the present invention, power electronic devices T1~T12 all disjunctions, current path quilt
Partition, the isolation of two sides DC master row；When working normally protective device "on" position of the present invention, T1, T3, T5, T7, T9, T11 are closed
It closes, T2, T4, T6, T8, T10, T12 disjunction, current path is shown in Fig. 2, and Fig. 2 is that electric current is turned right flow circuits from left side, electricity
The case where stream turns left side flowing from right side is symmetrical with it；When electrification is closed a floodgate, if two sides DC master row voltage phase difference is larger, this hair
The chopper being made up of power electronic devices and direct current reactor is carried out unilateral bus to other side mother by bright protective device
The precharge of line；About pre-charging functions: because being related to the normal work of electronic power switch, if be not pre-charged
Words, if the voltage difference of two side bus is too high, directly close a floodgate to be equivalent to applies a voltage to electricity on the bus capacitor of opposite side
Capacity charge has a very big dash current；When protection act or electrification disjunction, electric current is by circuit afterflow shown in Fig. 3.
Fig. 3 is the single-phase continuous current circuit that electric current original direction is from left side to right side, continuous current circuit of the electric current original direction from right side to left side
It is symmetrical with it.
The full-controlled device of three phase full bridge lower half bridge arm of the invention can be substituted by diode, be replaced as energy after three-phase half-bridge
It works normally.
The voltage of electric current and capacitor C1 and C2 supported on both sides in the middle part of protector measuring of the present invention in direct current reactance, works as hair
When raw following situations, protective device movement disconnects two sides connection:
A, electric current are more than limits value；B, the variation road of electric current are more than limits value；C, voltage difference are more than limits value.
The above-described embodiments merely illustrate the principles and effects of the present invention, and the embodiment that part uses, for
For those skilled in the art, without departing from the concept of the premise of the invention, can also make it is several deformation and
It improves, these are all within the scope of protection of the present invention.
Claims (4)
1. a kind of power electronics direct current protecting device of three phase full bridge topology, it is characterised in that: including two positive and negative direct current busbars
And it is connected to Support Capacitor C1 and C2 between DC master row positive and negative anodes, two groups of three phase full bridge (PCC) powers and is connected to
Three direct current reactors between two three-phase full bridge power components, direct current reactor is between DC master row positive and negative anodes with limitation
The current changing rate di/dt in circuit, one group of three phase full bridge (PCC) power are made of power electronic devices T1~T6, concatenated electric power
Electronic device T1, T2, concatenated power electronic devices T3, T4 and concatenated power electronic devices T5, T6 with Support Capacitor C1
Parallel connection, another group of three phase full bridge (PCC) power are made of power electronic devices T7~T12, concatenated power electronic devices T7, T8,
Concatenated power electronic devices T9, T10 and concatenated power electronic devices T11, T12 are in parallel with Support Capacitor C2, and one straight
Stream reactor one end is connected to the other end between power electronic devices T5, T6 and is connected between power electronic devices T7, T8, and one
Direct current reactor one end is connected to the other end between power electronic devices T3, T4 and is connected between power electronic devices T9, T10,
One direct current reactor one end is connected to the other end between power electronic devices T1, T2 and is connected to power electronic devices T11, T12
Between, the upper inverse parallel of power electronic devices T1~T12 has diode D1~D12, turns off moment power electronic devices T1
~T8 whole locking pulse, electric current on direct current reactor by diode D1~D12, direct current reactor and Support Capacitor C1 and
The circuit afterflow that C2 is constituted, normal through-flow permission electric current Two-phase flow.
2. a kind of power electronics direct current protecting device of three phase full bridge topology according to claim 1, which is characterized in that institute
The power electronic devices and direct current reactor stated constitute chopper, carry out in the biggish situation of two sides DC master row voltage phase difference
When closed procedure, precharge of the unilateral busbar to other side busbar is realized.
3. a kind of power electronics direct current protecting device of three phase full bridge topology according to claim 2, which is characterized in that institute
The power electronic devices stated is switching tube.
4. a kind of power electronics direct current protecting device of three phase full bridge topology according to claim 3, which is characterized in that also
Including control system；The electricity that the control system passes through electric current and capacitor C1 and C2 supported on both sides on measurement direct current reactor
Pressure, works as generation: a, and electric current is more than limits value；B, the variation road of electric current are more than limits value；C, voltage difference are more than limits value；It is above-mentioned
For the moment, protective device movement disconnects two sides connection to three kinds of situations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910000029.2A CN109687397A (en) | 2019-01-01 | 2019-01-01 | A kind of power electronics direct current protecting device of three phase full bridge topology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910000029.2A CN109687397A (en) | 2019-01-01 | 2019-01-01 | A kind of power electronics direct current protecting device of three phase full bridge topology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109687397A true CN109687397A (en) | 2019-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910000029.2A Pending CN109687397A (en) | 2019-01-01 | 2019-01-01 | A kind of power electronics direct current protecting device of three phase full bridge topology |
Country Status (1)
| Country | Link |
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| CN (1) | CN109687397A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103155393A (en) * | 2010-10-13 | 2013-06-12 | 三菱电机株式会社 | Three-phase ac to dc converter and air conditioning apparatus using three-phase ac to dc converter |
| CN106253675A (en) * | 2016-08-17 | 2016-12-21 | 湖南纽帕科技有限公司 | A kind of vehicular high-power used for electric vehicle two-way DC/DC device |
| CN106451406A (en) * | 2016-09-22 | 2017-02-22 | 北京交通大学 | Flexible switch device for connecting two DC power distribution systems |
| CN207382193U (en) * | 2017-11-21 | 2018-05-18 | 湘潭电机股份有限公司 | A kind of non-isolated step-up/step-down dc-dc converter of multichannel phase shift |
-
2019
- 2019-01-01 CN CN201910000029.2A patent/CN109687397A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103155393A (en) * | 2010-10-13 | 2013-06-12 | 三菱电机株式会社 | Three-phase ac to dc converter and air conditioning apparatus using three-phase ac to dc converter |
| CN106253675A (en) * | 2016-08-17 | 2016-12-21 | 湖南纽帕科技有限公司 | A kind of vehicular high-power used for electric vehicle two-way DC/DC device |
| CN106451406A (en) * | 2016-09-22 | 2017-02-22 | 北京交通大学 | Flexible switch device for connecting two DC power distribution systems |
| CN207382193U (en) * | 2017-11-21 | 2018-05-18 | 湘潭电机股份有限公司 | A kind of non-isolated step-up/step-down dc-dc converter of multichannel phase shift |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190426 |