CN207098949U - A kind of permagnetic synchronous motor no electrolytic capacitor power inverter - Google Patents
A kind of permagnetic synchronous motor no electrolytic capacitor power inverter Download PDFInfo
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- CN207098949U CN207098949U CN201721048539.XU CN201721048539U CN207098949U CN 207098949 U CN207098949 U CN 207098949U CN 201721048539 U CN201721048539 U CN 201721048539U CN 207098949 U CN207098949 U CN 207098949U
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Abstract
The utility model discloses a kind of permagnetic synchronous motor no electrolytic capacitor power inverter, including single phase rectifier circuit, the decoupling circuit being connected with rectification circuit, the inverter circuit that is connected with decoupling circuit；Single phase rectifier circuit includes two pairs of diodes, two pairs of diode input AC sources；Decoupling circuit includes two power devices, two inductors, three diodes, a thin-film capacitor；Inverter circuit includes three couples of IGBT, and three couples of IGBT output end is connected to magneto synchronous motor.
Description
Technical field
The utility model belongs to power inverter technical field, and it is electroless to concretely relate to a kind of permagnetic synchronous motor
Capacitance Power converter.
Background technology
In recent years, permagnetic synchronous motor is with its original small volume, in light weight, efficiency high, good speed adjustment features plurality of advantages
Obtained a wide range of applications in fields such as household electrical appliances, robot, electric cars.In the vector control system of permagnetic synchronous motor, direct current
The stabilization of busbar voltage is most crucial to its control effect.In view of line voltage fluctuation in itself and work as permagnetic synchronous motor
Driver, which is in, to be disturbed under larger environment, and the voltage for reaching bus bar side by rectifier can have certain frequency fluctuation, should
Frequency fluctuation is transmitted step by step in systems, is ultimately resulted in the electric current of permagnetic synchronous motor there is also the fluctuation of same frequency, is caused
Larger pulsation be present in permagnetic synchronous motor output torque.
The tracking of electric current loop is realized in conventional vector control by two pi regulators well, but busbar voltage has fluctuation
When, it may appear that actual current can not accurately track the phenomenon of given electric current, cause whole controller response performance to reduce.
The content of the invention
The purpose of this utility model is to provide a kind of permagnetic synchronous motor no electrolytic capacitor power inverter, it is intended to overcomes electricity
Net is stored the energy in electric capacity first, then provides energy to inverter by electric capacity, it is therefore desirable to the electric capacity of larger capacitance, together
When capacitive energy absorption and release be it is uncontrollable, this can cause the commutation diode angle of flow reduce, increase grid side electric current
Aberration rate, reduce system power factor the problem of.
In order to solve the above technical problems, what the purpose of this utility model was realized in：
A kind of permagnetic synchronous motor no electrolytic capacitor power inverter, including single phase rectifier circuit, be connected with rectification circuit
The decoupling circuit connect, the inverter circuit being connected with decoupling circuit；Single phase rectifier circuit includes two pairs of diodes, two pairs of diodes
Input AC source；Decoupling circuit includes two power devices, two inductors, three diodes, a thin-film capacitor；Inversion electricity
Road includes three couples of IGBT, and three couples of IGBT output end is connected to magneto synchronous motor；Two power devices are respectively the first work(
Rate device, the second power device, two inductors are respectively the first inductor, the second inductor, and three diodes are respectively the one or two
Pole pipe, the second diode, the 3rd diode；The negative electrode of second diode is connected with thin-film capacitor, its circuit in parallel after connecting
At the both ends of the second power device, the second power device is connected with the second inductor, and the circuit in parallel after series connection is in the 3rd diode
Both ends, the negative electrode of the 3rd diode are connected with one end of the first power device, and the other end of the first power device connects the first diode
Anode, the negative electrode of the first diode is connected to the negative electrode of the second diode；Decoupling circuit by the first inductor with it is single-phase whole
Current circuit connects.
On the basis of such scheme and as the preferred scheme of such scheme：Power device is used to carry out grid side power
Factor correcting.
On the basis of such scheme and as the preferred scheme of such scheme：Thin-film capacitor is used to store power network pulsating energy
Amount.
On the basis of such scheme and as the preferred scheme of such scheme：Decoupling circuit is input to for buffering power network
The energy at dc bus end, a power grid energy part are supplied directly to permagnetic synchronous motor, and another part is stored in accumulator
In, when grid side power is relatively low, the release of this portion of energy, energy is provided for permagnetic synchronous motor.
The utility model is prominent and beneficial compared with prior art to be had the technical effect that：
Permagnetic synchronous motor no electrolytic capacitor power inverter of the present utility model, can be by a power grid energy part directly
Motor is supplied to, another part is stored in power decoupling circuit, and when grid side power is relatively low, this portion of energy is released to electricity
Machine provides energy, reduces the energy that electric capacity needs store, and then reduce capacitance.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model.
Embodiment
The utility model is further described with specific embodiment below in conjunction with the accompanying drawings；
This gives a kind of permagnetic synchronous motor no electrolytic capacitor power inverter, including single phase rectifier circuit 1,
New power decoupling circuit 2 and three-phase inverting circuit 3, the single phase rectifier circuit 1 are formed by connecting by four diodes, four two
Pole pipe is divided into two pairs, per two Diode series of centering, two pairs of diodes in parallel, two pairs of diode input AC sources；It is described new
Type decoupling circuit 2 by inductance L1, inductance L2, diode D1, diode D2, diode D3, power device S1, power device S2 with
And thin-film capacitor C is connected and composed, power device is used to carry out grid side PFC, and thin-film capacitor is used to store power network arteries and veins
Energy；The three-phase inverting circuit 3 is formed by connecting by three pairs of IGBT bridge arms successively, and it is same that three pairs of IGBT output ends are connected to permanent magnetism
Walk motor.
The circuit of new decoupling circuit 2 connects：Diode D2 connects with thin-film capacitor C, and the circuit in parallel after series connection exists
Power device S2 both ends, power device S2 connect with inductance L2, and the circuit in parallel after series connection is in diode D3 both ends, diode
D3 negative electrode connection power device S1, power device the S1 other end connection diode D1 anode, diode D1 negative electrode connect
It is connected to diode D2 negative electrode.Connected between the new decoupling circuit 2 and single phase rectifier circuit 1 by inductance L1.New solution
Coupling circuit is used to buffer the energy that power network is input to dc bus end, and a power grid energy part is supplied directly to permanent magnet synchronous electric
Machine, another part are stored in accumulator, and when grid side power is relatively low, the release of this portion of energy, is permagnetic synchronous motor
Energy is provided.
In summary, a power grid energy part is supplied directly to by this permagnetic synchronous motor no electrolytic capacitor power inverter
Motor, another part are stored in power decoupling circuit, and when grid side power is relatively low, this portion of energy is released to motor offer
Energy, reduce the energy that electric capacity needs store, and then reduce capacitance.
Above-described embodiment is only preferred embodiment of the present utility model, not limits protection model of the present utility model according to this
Enclose, therefore：All equivalence changes done according to structure of the present utility model, shape, principle, all should be covered by protection of the present utility model
Within the scope of.
Claims (1)
- A kind of 1. permagnetic synchronous motor no electrolytic capacitor power inverter, it is characterised in that：Including single phase rectifier circuit and rectification New decoupling circuit that circuit is connected, the inverter circuit being connected with new decoupling circuit；Single phase rectifier circuit includes two pairs of diodes, two pairs of diode input AC sources；New decoupling circuit includes two power devices, two inductors, three diodes, a thin-film capacitor；Inverter circuit includes three couples of IGBT, and three couples of IGBT output end is connected to magneto synchronous motor；Two power devices point Not Wei the first power device, the second power device, two inductors are respectively the first inductor, the second inductor, three diodes point Wei not the first diode, the second diode, the 3rd diode；The negative electrode of second diode is connected with thin-film capacitor, and its circuit in parallel after connecting is at the both ends of the second power device, and second Power device is connected with the second inductor, the circuit in parallel after series connection at the both ends of the 3rd diode, the negative electrode of the 3rd diode with One end connection of first power device, the other end of the first power device connect the anode of the first diode, the negative electrode of the first diode It is connected to the negative electrode of the second diode；New decoupling circuit is connected by the first inductor with single phase rectifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721048539.XU CN207098949U (en) | 2017-08-21 | 2017-08-21 | A kind of permagnetic synchronous motor no electrolytic capacitor power inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721048539.XU CN207098949U (en) | 2017-08-21 | 2017-08-21 | A kind of permagnetic synchronous motor no electrolytic capacitor power inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207098949U true CN207098949U (en) | 2018-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721048539.XU Active CN207098949U (en) | 2017-08-21 | 2017-08-21 | A kind of permagnetic synchronous motor no electrolytic capacitor power inverter |
Country Status (1)
| Country | Link |
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| CN (1) | CN207098949U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109067292A (en) * | 2018-07-02 | 2018-12-21 | 江苏大学 | PMSM Drive System no electrolytic capacitor power inverter and control method |
| CN109728735A (en) * | 2019-01-02 | 2019-05-07 | 广东美的暖通设备有限公司 | Three-phase no electrolytic capacitor main circuit of converter determines method and frequency converter |
-
2017
- 2017-08-21 CN CN201721048539.XU patent/CN207098949U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109067292A (en) * | 2018-07-02 | 2018-12-21 | 江苏大学 | PMSM Drive System no electrolytic capacitor power inverter and control method |
| CN109067292B (en) * | 2018-07-02 | 2021-05-25 | 江苏大学 | Electrolytic-capacitor-free power converter of permanent magnet synchronous motor driving system and control method |
| CN109728735A (en) * | 2019-01-02 | 2019-05-07 | 广东美的暖通设备有限公司 | Three-phase no electrolytic capacitor main circuit of converter determines method and frequency converter |
| CN109728735B (en) * | 2019-01-02 | 2021-11-02 | 广东美的暖通设备有限公司 | Main circuit of three-phase electrolytic-capacitor-free frequency converter, determination method and frequency converter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: PMSM does not have electrolytic capacitor power converter Effective date of registration: 20181122 Granted publication date: 20180313 Pledgee: Agricultural Bank of China Limited by Share Ltd Jiaxing Xiuzhou branch Pledgor: Zhejiang Deou Electrical Technology Co., Ltd. Registration number: 2018330000406 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 3 / F, building 6, Shanghai Jiaotong University (Jiaxing) Science Park, 228 Hongye Road, Xiuzhou Industrial Zone, Jiaxing City, Zhejiang Province, 314000 Patentee after: Zhejiang Deou Electric Technology Co.,Ltd. Address before: 3 / F, building 6, Shanghai Jiaotong University (Jiaxing) Science Park, 228 Hongye Road, Xiuzhou Industrial Zone, Jiaxing City, Zhejiang Province, 314000 Patentee before: ZHEJIANG DEALOUR ELECTRIC TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |