CN110460255A - Power electronic system Work condition analogue device with output LC filter - Google Patents
Power electronic system Work condition analogue device with output LC filter Download PDFInfo
- Publication number
- CN110460255A CN110460255A CN201910661964.3A CN201910661964A CN110460255A CN 110460255 A CN110460255 A CN 110460255A CN 201910661964 A CN201910661964 A CN 201910661964A CN 110460255 A CN110460255 A CN 110460255A
- Authority
- CN
- China
- Prior art keywords
- output
- filter
- power
- work condition
- electronic system
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
- H02M1/126—Arrangements for reducing harmonics from ac input or output using passive filters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Power Conversion In General (AREA)
Abstract
The present invention provides a kind of power electronic system Work condition analogue devices with output LC filter, comprising: output LC filter, electronic power convertor, Work condition analogue controller；Wherein, output LC filter is for being filtered the output voltage of power electronic system Work condition analogue device, and electronic power convertor is cooperated to realize output voltage control；Electronic power convertor in electrical level for reflecting the voltage responsive of simulated power electronic system operating condition；Work condition analogue controller is used to carry out related operation using the mathematical model and voltage controller of simulated power electronic system operating condition.The output LC filter that the present invention uses can be such that electronic power convertor and external circuit decouples, and feasibility is provided for the double -loop control of output voltage, under the premise of the electrical behavioral trait of accurate simulation specific operation, the compatibility and flexibility of working condition simulation test system are improved.
Description
Technical field
The present invention relates to power electronics fields, and in particular, to has the power electronic system of output LC filter
Work condition analogue device.
Background technique
With the development of electrical engineering technology, today's society tends to diversification to the utilization form of electric energy.Wherein, alternating current-direct current
The power electronic equipment and equipment that key effect is played in transformation of electrical energy, be also faced with operation power grade it is higher and higher, answer
The challenge to be become increasingly complex with operating condition.In design research and development and factory debugging, specific run operating condition is carried out to power electronic system
Under functionality and reliability test, can effectively depict the performance of power electronic system, effectively judge practical fortune
The failure risk being likely to occur when row, pointedly instructs system to design, to save the long term maintenance cost of system.
Power electronic system Work condition analogue device is using power electronic circuit and control, to power electronic system or member
The specific operation of device is simulated, for functional and reliability test.(input electrical quantity is electricity to traditional voltage responsive type
Stream, output electrical quantity are voltage) working condition simulation method, by external circuit and the electronic power convertor for being used as Work condition analogue output
It is connected directly, is limited in that:
1) output voltage is PWM waveform, containing a large amount of switching frequency harmonic wave, when the electronic power convertor and outside
When the PWM carrier wave of circuit is asynchronous, biggish current ripples can be generated by exporting in electric current；
2) control method of output voltage is usually opened loop control, under opened loop control, since there are the dead zone PWM, outputs
There are steady-state errors between voltage meeting and reference value.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide one kind to have output LC filter power electronics system
System Work condition analogue device.
The present invention provides a kind of with output LC filter power electronic system Work condition analogue device, comprising: electrical connection
Export LC filter, electronic power convertor and Work condition analogue controller, in which:
It is described to have output LC filter power electronic system Work condition analogue device when being connected with external circuit, external circuit
It is electric current to the input electrical quantity with output LC filter power electronic system Work condition analogue device, it is described that there is output
The output electrical quantity of LC filter power electronic system Work condition analogue device is voltage；
The electronic power convertor is rung for generating the voltage same or similar with simulated power electronic system operating condition
It answers；
The Work condition analogue controller, for generating the power electronics and becoming according to simulated power electronic system operating condition
Flow the control signal of device；
The output LC filter, is made of inductance, capacitor, for inhibiting the electronic power convertor output voltage
Medium, high frequency harmonic wave.
Optionally, the output LC filter has two groups of electrical ports, in which:
First group of electrical port is connected with external circuit, second group of electrical port and the power electronic system Work condition analogue
Electronic power convertor is connected in device；
The inductance of the input LC filter connects between two groups of electrical ports；Capacitor constitutes capacitive branch, with institute
First group of electrical port for stating input LC filter forms pass relationship.
Optionally, inductance, the capacitance parameter of the output LC filter meet:
Wherein, each parameter value under the International System of Units, L, C are every equivalent inductance of the output LC filter respectively
With every equivalent capacitor, fresFor the corner frequency of the output LC filter, fswFor in the power electronics Work condition analogue device
The lowermost switch frequency of electronic power convertor, α are proportionality coefficient, 0 < α≤1.
Compared with prior art, the present invention have it is following the utility model has the advantages that
1) provided by the invention to have in output LC filter power electronic system Work condition analogue device, use LC filter
It decouples electronic power convertor and external circuit, feasibility is provided for the double loop control of output voltage, accurate
Under the premise of the electrical behavioral trait for simulating specific operation, working condition simulation test system is improved in the compatible and flexible of simulation
Property.
2) the LC filter provided by the invention having in output LC filter power electronic system Work condition analogue device, it is right
The high-frequency harmonic of its internal power electronic inverter output voltage has good inhibiting effect, and to low frequency components such as fundamental waves
Influence very little；In addition, in output LC filter, there are capacitive branch, so that device internal power electronic inverter and device
External circuit decoupling, even if electronic power convertor with the PWM carrier wave of external circuit without synchronous Conservation measures in the case where, still
It is so avoided that the ripple quantity in output electric current increases, so that Work condition analogue device is suitable for more kinds of different operating conditions, have higher
Compatibility.
3) provided by the invention to have in output LC filter power electronic system Work condition analogue device, it is filtered using LC
Under the premise of device, output voltage can be controlled using the structure of double control ring, this control method can be to avoid open loop
Existing steady-state error when control, while twin nuclei can also guarantee that the voltage control of the Work condition analogue device has preferably
Dynamic property；
4) provided by the invention to have in output LC filter power electronic system Work condition analogue device, LC under three-phase circuit
The capacitive branch of filter includes neutral point, therefore, in sampling, can choose this neutral point as sample reference point, In
When sampling and outputting voltage being needed to be used as control calculating, this characteristic remains the information for including in output voltage zero-sequence component.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is provided by the invention with output LC filter power electronic system Work condition analogue schematic device；
Fig. 2 is a kind of simulation electricity with output LC filter power electronic system Work condition analogue device provided by the invention
The structural schematic diagram of machine operating condition embodiment.
In figure:
1- has output LC filter power electronic system Work condition analogue device；
11- exports LC filter；
12- electronic power convertor；
13- Work condition analogue controller；
2- external circuit.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection scope.
The embodiment of the present invention provides a kind of with output LC filter power electronic system Work condition analogue device, Ke Yitong
Output LC filter is crossed, the medium, high frequency of power electronic system Work condition analogue device alternating-current electric port output voltage is inhibited
Harmonic wave, and decouple the power electronic system Work condition analogue device with the external circuit being connected.
Fig. 1 has output LC filter power electronic system Work condition analogue schematic device to be provided by the invention, and Fig. 2 is
A kind of simulated machine operating condition embodiment of power electronics Work condition analogue device provided by the invention using output LC filter
Structural schematic diagram.
For the present invention in the electrical behavioral trait of simulated machine, a kind of provided embodiment is as shown in Figure 2.In this reality
Apply in example, the speed regulation frequency converter of motor as with power electronics Work condition analogue device is connected in the present embodiment external circuit 2；Institute
First group of electrical port for stating output LC filter 11 is connected with external circuit 2, second group of electrical port and the power electronics
Electronic power convertor 12 is connected in system condition simulator；The inductance connects between two groups of electrical ports；It is described
Capacitor constitutes capacitive branch, forms pass relationship with first group of electrical port of the output LC filter 11.
Output LC filter 11 inhibits power electronics to become for cooperating electronic power convertor 12 to carry out output voltage control
The switching frequency and medium, high frequency harmonic wave of 12 output voltage of device are flowed, and is made outside electronic power convertor 12 and Work condition analogue device
The decoupling of 2 phase of portion's circuit；
Specifically, to inhibit Work condition analogue device to export the switching frequency harmonic wave in PWM voltage, output LC filter 11
Cutoff frequency fresDesign meet:
Each parameter value under the International System of Units in formula, L, C are every equivalent electricity of the output LC filter 11 respectively
Sense and every equivalent capacitor, fresFor the corner frequency of the output LC filter 11, fswFor power electronics Work condition analogue dress
The lowermost switch frequency of middle electronic power convertor 12 is set, α is proportionality coefficient, 0 < α≤1.
Electronic power convertor 12, the simulated machine voltage responsive same or similar under drive control for generating；
As a preferred embodiment, the electronic power convertor in the present embodiment includes power semiconductor switch bridge, power half
Conductor switch bridge is used for alternating current-direct current transformation of electrical energy, by IGBT, MOSFET constant power semiconductor switch device and other necessary yuan
Device composition；The DC power supply terminal of electronic power convertor 12 can access common mode inductance for inhibiting DC side positive bus-bar and bearing
Common mode component in bus.
Work condition analogue controller 13, for generating electronic power convertor 12 according to simulated power electronic system operating condition
Control signal；
As a preferred embodiment, the Work condition analogue controller in the present embodiment include institute's simulated machine mathematical model and can
The o controller of choosing, the mathematical model of institute's simulated machine calculate the reference of output voltage according to the input current that sampling obtains
Value；The reference value of the output voltage is directly over modulation and generates power semiconductor in the electronic power convertor 12
Switch order or o controller generate the electronic power conversion according to this reference value by way of feedback control
The switch order of power semiconductor in device 12, then the output voltage of electronic power convertor 12 is controlled；It is described defeated
Controller includes but is not limited to PI controller, PR controller, hystersis controller out.
Particularly, the present invention has in output LC filter power electronic system Work condition analogue device, can use dual control
The structure of ring processed controls output voltage, this control method existing steady-state error when can be to avoid opened loop control, together
When twin nuclei can also guarantee Work condition analogue device voltage control have preferable dynamic property；Due to there is output LC filter
The PWM modulation carrier wave of the capacitive branch of wave device 11, electronic power convertor 12 can be with the PWM modulation carrier wave solution of speed regulation frequency converter
Coupling, even if in the case that electronic power convertor and the PWM carrier wave of external circuit are without synchronous Conservation measures, still ensuring that input electricity
Ripple in stream will not increase significantly, therefore Work condition analogue device can be more flexible under the premise of not adjusting PWM modulation carrier wave
The different operating condition of simulation.
It is provided by the invention to have in output LC filter power electronic system Work condition analogue device, used output LC
Filter can inhibit to export the switching frequency harmonic wave in PWM voltage, and make the PWM of electronic power convertor and external circuit
Carrier wave mutually decouples, and so that Work condition analogue device is had higher compatibility and flexibility when simulating different operating conditions, simultaneously because defeated
LC filter makes bicyclic voltage control have feasibility out, and the voltage output accuracy and voltage of Work condition analogue device control dynamic
Performance is also optimized.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims, this not shadow
Ring substantive content of the invention.In the absence of conflict, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (3)
1. one kind have output LC filter power electronic system Work condition analogue device characterized by comprising electrical connection it is defeated
LC filter, electronic power convertor and Work condition analogue controller out, in which:
Described to have output LC filter power electronic system Work condition analogue device when being connected with external circuit, external circuit is to institute
Stating the input electrical quantity with output LC filter power electronic system Work condition analogue device is electric current, described to have output LC filter
The output electrical quantity of wave device power electronic system Work condition analogue device is voltage；
The electronic power convertor, for generating the voltage responsive same or similar with simulated power electronic system operating condition；
The Work condition analogue controller, for generating the electronic power convertor according to simulated power electronic system operating condition
Control signal；
The output LC filter, is made of inductance, capacitor, for inhibiting in the electronic power convertor output voltage,
High-frequency harmonic.
2. according to claim 1 have output LC filter power electronic system Work condition analogue device, which is characterized in that
The output LC filter has two groups of electrical ports, in which:
First group of electrical port is connected with external circuit, and second group of electrical port has output LC filter power electronics with described
Electronic power convertor is connected in system condition simulator；
The inductance of the input LC filter connects between two groups of electrical ports；Capacitor constitutes capacitive branch, and described defeated
First group of electrical port for entering LC filter forms pass relationship.
3. according to claim 1 have output LC filter power electronic system Work condition analogue device, which is characterized in that
Inductance, the capacitance parameter of the output LC filter meet:
Wherein, each parameter value under the International System of Units, L, C are every equivalent inductance of the output LC filter respectively and every
Equivalent capacitor, fresFor the corner frequency of the output LC filter, fswFor electric power in the power electronics Work condition analogue device
The lowermost switch frequency of electronic inverter, α are proportionality coefficient, 0 < α≤1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910661964.3A CN110460255A (en) | 2019-07-22 | 2019-07-22 | Power electronic system Work condition analogue device with output LC filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910661964.3A CN110460255A (en) | 2019-07-22 | 2019-07-22 | Power electronic system Work condition analogue device with output LC filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110460255A true CN110460255A (en) | 2019-11-15 |
Family
ID=68482918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910661964.3A Pending CN110460255A (en) | 2019-07-22 | 2019-07-22 | Power electronic system Work condition analogue device with output LC filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110460255A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816870A (en) * | 2021-01-27 | 2021-05-18 | 臻驱科技（上海）有限公司 | Virtual motor based carrier synchronization system and method for frequency converter drag test platform and computer readable storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011217507A (en) * | 2010-03-31 | 2011-10-27 | Sinfonia Technology Co Ltd | Inverter load simulator |
| CN107645253A (en) * | 2017-10-23 | 2018-01-30 | 上海交通大学 | The three-phase simulation device of current-responsive type permagnetic synchronous motor and its drive system |
| CN107807295A (en) * | 2017-11-30 | 2018-03-16 | 上海交通大学 | The simulation system of voltage responsive type three-phase permanent magnet synchronous motor |
-
2019
- 2019-07-22 CN CN201910661964.3A patent/CN110460255A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011217507A (en) * | 2010-03-31 | 2011-10-27 | Sinfonia Technology Co Ltd | Inverter load simulator |
| CN107645253A (en) * | 2017-10-23 | 2018-01-30 | 上海交通大学 | The three-phase simulation device of current-responsive type permagnetic synchronous motor and its drive system |
| CN107807295A (en) * | 2017-11-30 | 2018-03-16 | 上海交通大学 | The simulation system of voltage responsive type three-phase permanent magnet synchronous motor |
Non-Patent Citations (1)
| Title |
|---|
| YUBO SONG: "Mission Profile Emulator for Permanent Magnet Synchronous Machine in Voltage-Response Mode Based on Three-phase Power Electronic Converter", 《IEEE》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816870A (en) * | 2021-01-27 | 2021-05-18 | 臻驱科技（上海）有限公司 | Virtual motor based carrier synchronization system and method for frequency converter drag test platform and computer readable storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111030152B (en) | Energy storage converter system and control method thereof | |
| CN106953350B (en) | A kind of PLL Approach for Modeling of Small-Signal in both-end MMC-HVDC system | |
| CN108280271B (en) | Unified power flow controller equivalent modeling method based on switching period average principle | |
| CN104579110B (en) | A kind of high-speed permanent magnet motor frequency conversion speed-adjusting system and method | |
| CN110943469B (en) | Single-stage energy storage converter and control method thereof | |
| CN108599165A (en) | Three level active filters, its application system and method based on Compound Control Strategy | |
| CN104242712A (en) | Inverter parallel system and control method thereof | |
| Stankovic et al. | A new control method for input–output harmonic elimination of the PWM boost-type rectifier under extreme unbalanced operating conditions | |
| CN101291057B (en) | Dynamic voltage compensator adopting 3 phase structure | |
| Xu et al. | An improved fault-tolerant control strategy for high-power ANPC three-level inverter under short-circuit fault of power devices | |
| CN107153152A (en) | A kind of grid adaptability test device | |
| CN104836463A (en) | Mixing transformation system based on three-phase PWM rectification and multi-unit uncontrolled rectification | |
| CN100520424C (en) | Inverter energy current cycle test device | |
| CN201061144Y (en) | Dynamic voltage compensator using three single-phase structure | |
| CN111865121A (en) | Single-phase and three-phase compatible PFC converter and control method thereof | |
| Li et al. | An improved DIM interface algorithm for the MMC-HVDC power hardware-in-the-loop simulation system | |
| CN201975800U (en) | Alternating-current permanent magnet synchronous generator system driven by semi-control converters | |
| CN110460255A (en) | Power electronic system Work condition analogue device with output LC filter | |
| CN110460252A (en) | Power electronic system Work condition analogue device with input LC filter | |
| Shen et al. | Asymmetric SVPWM and error suppression method for current reconstruction of T-type three-level inverter | |
| CN108347176A (en) | A kind of power amplifier for power system real-time simulation | |
| CN207559560U (en) | Based on the single-phase shunt active power filter for improving Repetitive controller | |
| CN206945888U (en) | A kind of grid adaptability test device | |
| Rogersten et al. | A quantitative method for the assessment of VSC-HVdc controller simulations in EMT tools | |
| CN110071507A (en) | Single-phase series-parallel hybrid active electric filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191115 |