CN105099313B - The control system and control method of a kind of double feedback electric engine - Google Patents
The control system and control method of a kind of double feedback electric engine Download PDFInfo
- Publication number
- CN105099313B CN105099313B CN201410214418.2A CN201410214418A CN105099313B CN 105099313 B CN105099313 B CN 105099313B CN 201410214418 A CN201410214418 A CN 201410214418A CN 105099313 B CN105099313 B CN 105099313B
- Authority
- CN
- China
- Prior art keywords
- stator
- msub
- mrow
- power
- doubly
- 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
Landscapes
- Control Of Ac Motors In General (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention discloses the control system and control method of double feedback electric engine under a kind of stator coordinate, to improve the stability of stator power control loop.The control system includes：Power calculation unit, for the stator voltage and stator current according to double feedback electric engine, determine the stator instantaneous output of double feedback electric engine；Nonlinear feedback item computing unit, for the stator voltage according to double feedback electric engine, stator current, rotor machinery angular frequency and the parameter of electric machine, determine nonlinear feedback item；Power governor, for giving power and stator instantaneous output according to the stator of double feedback electric engine, determine stator power Regulate signal；Feedback of status link, for according to stator instantaneous output, determining status feedback signal；Rotor voltage computing unit, for according to nonlinear feedback item, stator power Regulate signal and status feedback signal, determining the rotor voltage of double feedback electric engine.
Description
Technical Field
The invention relates to the technical field of motor control, in particular to a control system and a control method of a double-fed motor under a stator coordinate system.
Background
At present, the double-fed motor is widely applied, especially in the field of wind power generation. In an application scenario that the active power or the reactive power of a stator of a doubly-fed motor needs to be controlled, one of the methods for controlling the doubly-fed motor is to directly control the stator power of the doubly-fed motor by using a multi-scalar control mode.
The multi-scalar control method of the double-fed motor adopts a stator coordinate system, selects the active power of a motor stator, the reactive power of the motor stator, the rotating speed of the motor and the square of a motor stator flux linkage as state variables, obtains a state equation of the double-fed motor, linearizes the state equation of the double-fed motor by utilizing a nonlinear feedback term, converts the state equation of the double-fed motor into a direct equation of the active power of the motor stator and the reactive power of the motor stator, and can directly perform closed-loop control on the active power of the motor stator and the reactive power of the motor stator. Taking the active stator power as an example, a stator power control loop of the existing doubly-fed machine is shown in fig. 1, where:
giving active power to the stator;
Ps(s) active power is output for the stator;
W1(s) is a nonlinear feedback term;
Cp(s) is an active power regulator;
Gpand(s) is the transfer function of the doubly-fed machine to the active power of the stator.
The nonlinear feedback term W is characterized1(s) active power P output to the statorsInfluence of(s) PwClosed loop transfer function H of(s)w1(s) is:
it can be seen that the stator active power control loop shown in fig. 1 ignores the influence of the nonlinear feedback term on the stator output active power. In a stator coordinate system, all intermediate variables are alternating flow, and when the frequency of a nonlinear feedback item exceeds the cut-off frequency of a controlled object under topological abstraction of a control loop, the power control loop may oscillate. The stator power control loop shown in fig. 1 completely depends on the characteristics of the controlled object itself to suppress possible oscillation, so the stability of the power control loop is poor.
Disclosure of Invention
The embodiment of the invention provides a control system and a control method of a double-fed motor under a stator coordinate system, which are used for improving the stability of a power control loop.
The embodiment of the invention provides a control system of a doubly-fed motor under a stator coordinate system, which comprises the following components:
the power calculation unit is used for determining the stator instantaneous output power of the doubly-fed motor according to the stator voltage and the stator current of the doubly-fed motor;
the nonlinear feedback term calculation unit is used for determining a nonlinear feedback term according to the stator voltage, the stator current, the mechanical angular frequency of the rotor and the motor parameters of the doubly-fed motor;
the power regulator is used for determining a stator power regulation signal according to the stator given power of the doubly-fed motor and the stator instantaneous output power determined by the power calculation unit;
the state feedback link is used for determining a state feedback signal according to the instantaneous output power of the stator determined by the power calculation unit;
and the rotor voltage calculation unit is used for determining the rotor voltage of the doubly-fed motor according to the nonlinear feedback item determined by the nonlinear feedback item calculation unit, the stator power adjustment signal determined by the power regulator and the state feedback signal determined by the state feedback link.
The embodiment of the invention also provides a control method of the doubly-fed motor under the stator coordinate system, which comprises the following steps:
determining the stator instantaneous output power of the doubly-fed motor according to the stator voltage and the stator current of the doubly-fed motor; determining a nonlinear feedback term according to the stator voltage, the stator current, the mechanical angular frequency of the rotor and the motor parameters of the doubly-fed motor;
determining a stator power adjusting signal according to the stator given power and the stator instantaneous output power of the doubly-fed motor; determining a state feedback signal according to the instantaneous output power of the stator;
and determining the rotor voltage of the doubly-fed motor according to the nonlinear feedback term, the stator power adjusting signal and the state feedback signal.
According to the scheme provided by the embodiment of the invention, a state feedback link is added in a stator power control loop of the existing double-fed motor, the nonlinear feedback item is stabilized, and the stability of the power control loop can be improved.
Drawings
Fig. 1 is a schematic diagram of a stator active power control loop of a doubly-fed machine in a stator coordinate system in the prior art;
fig. 2 is a schematic diagram of a stator active power control loop in a control system of a doubly-fed motor in a stator coordinate system according to an embodiment of the present invention;
fig. 3 is a second schematic diagram of a stator active power control loop in a control system of a doubly-fed motor under a stator coordinate system according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a stator reactive power control loop in a control system of a doubly-fed motor in a stator coordinate system according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a control system of a doubly-fed motor in a stator coordinate system according to an embodiment of the present invention;
fig. 6 is a detailed schematic diagram of a control system of a doubly-fed motor in a stator coordinate system according to an embodiment of the present invention;
fig. 7 is a flowchart of a method for controlling a doubly-fed motor in a stator coordinate system according to an embodiment of the present invention.
Detailed Description
In order to provide an implementation scheme for improving the stability of a power control loop, the embodiment of the invention provides a control system and a control method for a doubly-fed motor under a stator coordinate system, and the following description is made in conjunction with the accompanying drawings in the specification, and it should be understood that the preferred embodiments described herein are only used for explaining and explaining the invention, and are not used for limiting the invention. And the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Under a stator coordinate system, the equation of the doubly-fed motor is as follows:
wherein,is a stator voltage vector;
is the rotor voltage vector;
is a stator current vector;
is the rotor current vector;
is a stator flux linkage vector;
is the rotor flux linkage vector;
ωris the rotor mechanical angular frequency;
Rsis the stator equivalent resistance;
Rris the rotor equivalent resistance.
Selecting rotor current vectorsAnd stator flux linkage vectorAs state variables.
Wherein L issIs stator equivalent inductance;
Lris rotor equivalent inductance;
Lmis an excitation inductor.
According to the above formulas (1), (2), (3) and (4), the double-fed motor equation is converted into a standard space state equation:
from the above equations (5) and (6), a scalar expression is obtained:
wherein:
wherein λ isαrα -axis component of rotor flux linkage in stator coordinate system;
λβrβ -axis component of rotor flux linkage in stator coordinate system;
λαsα -axis component of stator flux linkage under stator coordinate system;
λβsβ -axis component of stator flux linkage under stator coordinate system;
uαrα axis component of rotor voltage under stator coordinate system;
uβrβ axis component of rotor voltage under stator coordinate system;
uαsα axis component of stator voltage under stator coordinate system;
uβsβ axis component of stator voltage under stator coordinate system;
iαsα -axis component of stator current under the stator coordinate system;
iβsβ -axis component of stator current under the stator coordinate system;
iαrα -axis component of rotor current under a stator coordinate system;
iβris the β axis component of the rotor current in the stator coordinate system.
Under a stator coordinate system, the instantaneous output active power and the instantaneous output reactive power of the stator are as follows:
ps＝uαsiαs+uβsiβs； (16)
qs＝-uαsiβs+uβsiαs。 (17)
the above equations (16) and (17) can be expressed as the stator flux linkage and the rotor current:
the above equation (18) is derived to obtain:
the above equation (19) is derived to obtain:
wherein:
λs＝λαs 2+λβs 2； (25)
is＝iαs 2+iβs 2。
order:
then it can be obtained:
the active system order:
order:
s′1＝Kpps+s1(ii) a (31) then takes s1' as input:
the controlled object transfer function Gp'(s) is:
a transfer function of C with a power regulatorp(s), the closed-loop system control block diagram is shown in fig. 2, and the system closed-loop transfer function Hp'(s) is:
order:
the system equation of the active system can be equivalent to:
wherein K and M are equivalent parameters.
It can be seen that the stator output active power is determined in two parts, one by the regulator output and one by the nonlinear feedback term. Transfer function G of doubly-fed motor to stator active powerp(s) is:
thus, a control loop of the stator active power shown in fig. 3 can be constructed, wherein:
giving active power to the stator;
Ps(s) active power is output for the stator;
W1(s) is a nonlinear feedback term;
Kpthe method is an active power state feedback link.
Closed loop transfer function Hw1(s) is:
therefore, the feedback link K can be usedpThe pole of the closed loop transfer function is set, so that the active power control loop of the stator is stable.
Similarly, a control loop for the stator reactive power shown in fig. 4 may be constructed, wherein:
giving reactive power to the stator;
Qs(s) outputting reactive power for the stator;
W2(s) is a nonlinear feedback term;
Cq(s) is a reactive power regulator;
Gq(s) is a transfer function of the doubly-fed machine to the stator reactive power;
Kqis a reactive power state feedback link.
Closed loop transfer function Hw2(s) is:
to sum up, the control system of the doubly-fed motor in the stator coordinate system provided by the embodiment of the present invention is shown in fig. 5, and specifically includes:
the power calculation unit 501 is configured to determine the stator instantaneous output power of the doubly-fed motor according to the stator voltage and the stator current of the doubly-fed motor;
a nonlinear feedback term calculation unit 502 for calculating a nonlinear feedback term according to the stator voltage, the stator current, and the voltage of the doubly-fed motor,
Determining a nonlinear feedback term according to the mechanical angular frequency of the rotor and the motor parameters;
the power regulator 503 is used for determining a stator power regulation signal according to the stator given power of the doubly-fed motor and the stator instantaneous output power determined by the power calculation unit 501;
a state feedback link 504, configured to determine a state feedback signal according to the instantaneous stator output power determined by the power calculation unit 501;
and a rotor voltage calculation unit 505, configured to determine a rotor voltage of the doubly-fed motor according to the nonlinear feedback term determined by the nonlinear feedback term calculation unit 502, the stator power adjustment signal determined by the power adjuster 503, and the state feedback signal determined by the state feedback link 504.
The power regulator can be a PI regulator, and PI parameter values can be set according to the requirements of a classical automatic control system design method.
In the embodiment of the present invention, the state feedback link may be a linear feedback link. In other embodiments of the present invention, the state feedback element may not be a linear feedback element. The specific form of the state feedback link can be determined according to the actual application scene.
Further, the power calculating unit 501 may specifically determine the stator instantaneous output power of the doubly-fed motor based on the above equations (16) and (17).
The nonlinear feedback term calculation unit 502 may specifically determine the nonlinear feedback term based on the above equations (35) and (36).
The rotor voltage calculation unit 505 may specifically determine the rotor voltage, v, of the doubly-fed machine based on the above equations (28) and (29)1I.e. the sum of the difference between the stator power regulating signal corresponding to the stator active power and the state feedback signal corresponding to the stator active power and the nonlinear feedback term corresponding to the stator active power, v2Namely the sum of the difference between the stator power regulating signal corresponding to the stator reactive power and the state feedback signal corresponding to the stator reactive power and the nonlinear feedback term corresponding to the stator reactive power.
In practical implementation, a control system of the doubly-fed motor can be constructed as shown in fig. 6, and the grid voltage is obtained according to a general PLL phase-locked loop methodPhase ofAnd angular frequency ω, i.e. the phase and angular frequency of the stator voltage; the motor code disc and the common motor position measuring method are used for obtaining the phase position of the motor rotorAnd angular frequency ωr. Selecting a stator coordinate system to obtain the stator voltage of the motorStator currentCarrying out constant-amplitude dq conversion to obtain vector values of motor stator voltage and stator current in a stator coordinate system; and obtaining the rotor current of the motorAnd carrying out constant-amplitude dq conversion to obtain a vector value of the motor rotor current in a stator coordinate system.
And the rotor voltage calculated by the rotor voltage calculating unit is subjected to inverse dq conversion and is output to the inverter circuit. At this time, the voltage can be modulated by adopting an SVPWM method and then output to the motor rotor.
In the figure, the active power state feedback link can be set according to the formula (39), and the reactive power state feedback link can be set according to the formula (41), so that the cut-off frequency of the closed-loop transfer function is at the set frequency point.
Therefore, the double-feed motor control system provided by the embodiment of the invention can be used for carrying out multi-scalar control on the double-feed motor under a stator coordinate system, a state feedback link is added, a nonlinear feedback item can be stabilized, and the stability of a power control loop is ensured.
Correspondingly, an embodiment of the present invention further provides a method for controlling a doubly-fed motor, as shown in fig. 7, including:
step 701, determining the stator instantaneous output power of the doubly-fed motor according to the stator voltage and the stator current of the doubly-fed motor; determining a nonlinear feedback term according to the stator voltage, the stator current, the mechanical angular frequency of the rotor and the motor parameters of the doubly-fed motor;
step 702, determining a stator power adjusting signal according to stator given power and the stator instantaneous output power of the doubly-fed motor; determining a state feedback signal according to the instantaneous output power of the stator;
and 703, determining the rotor voltage of the doubly-fed motor according to the nonlinear feedback term, the stator power adjusting signal and the state feedback signal.
Further, the rotor voltage of the doubly-fed machine is determined by using the following formula:
λs＝λαs 2+λβs 2；
wherein u isαrα axis component of rotor voltage under stator coordinate system;
uβrβ axis component of rotor voltage under stator coordinate system;
λαsα -axis component of stator flux linkage under stator coordinate system;
λβsβ -axis component of stator flux linkage under stator coordinate system;
v1stator power adjustment signal for stator active power mapping and stator active power mapping
The difference of the state feedback signals of (a) and the sum of nonlinear feedback terms corresponding to the active power of the stator;
v2the sum of the difference between the stator power adjusting signal corresponding to the stator reactive power and the state feedback signal corresponding to the stator reactive power and the nonlinear feedback term corresponding to the stator reactive power.
In summary, by adopting the scheme provided by the invention, a state feedback link is added in the control system of the doubly-fed motor under the existing stator coordinate system, so that the stability of the control system can be improved.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.
Claims (3)
1. A control system of a doubly-fed machine in a stator coordinate system is characterized by comprising:
the power calculation unit is used for determining the stator instantaneous output power of the doubly-fed motor according to the stator voltage and the stator current of the doubly-fed motor;
the nonlinear feedback term calculation unit is used for determining a nonlinear feedback term according to the stator voltage, the stator current, the mechanical angular frequency of the rotor and the motor parameters of the doubly-fed motor;
the power regulator is used for determining a stator power regulation signal according to the stator given power of the doubly-fed motor and the stator instantaneous output power determined by the power calculation unit;
the state feedback link is used for determining a state feedback signal according to the instantaneous output power of the stator determined by the power calculation unit;
the rotor voltage calculation unit is used for determining the rotor voltage of the doubly-fed motor according to the nonlinear feedback item determined by the nonlinear feedback item calculation unit, the stator power adjustment signal determined by the power regulator and the state feedback signal determined by the state feedback link;
the rotor voltage calculation unit specifically determines the rotor voltage of the doubly-fed motor by adopting the following formula:
<mrow> <msub> <mi>u</mi> <mrow> <mi>&alpha;</mi> <mi>r</mi> </mrow> </msub> <mo>=</mo> <mfrac> <mrow> <mo>-</mo> <msub> <mi>v</mi> <mn>1</mn> </msub> <msub> <mi>&lambda;</mi> <mrow> <mi>&beta;</mi> <mi>s</mi> </mrow> </msub> <mo>+</mo> <msub> <mi>v</mi> <mn>2</mn> </msub> <msub> <mi>&lambda;</mi> <mrow> <mi>&alpha;</mi> <mi>s</mi> </mrow> </msub> </mrow> <mrow> <mo>|</mo> <msub> <mi>&lambda;</mi> <mi>s</mi> </msub> <msup> <mo>|</mo> <mn>2</mn> </msup> </mrow> </mfrac> <mo>;</mo> </mrow>
<mrow> <msub> <mi>u</mi> <mrow> <mi>&beta;</mi> <mi>r</mi> </mrow> </msub> <mo>=</mo> <mfrac> <mrow> <msub> <mi>v</mi> <mn>2</mn> </msub> <msub> <mi>&lambda;</mi> <mrow> <mi>&beta;</mi> <mi>s</mi> </mrow> </msub> <mo>+</mo> <msub> <mi>v</mi> <mn>1</mn> </msub> <msub> <mi>&lambda;</mi> <mrow> <mi>&alpha;</mi> <mi>s</mi> </mrow> </msub> </mrow> <mrow> <mo>|</mo> <msub> <mi>&lambda;</mi> <mi>s</mi> </msub> <msup> <mo>|</mo> <mn>2</mn> </msup> </mrow> </mfrac> <mo>;</mo> </mrow>
λs＝λαs 2+λβs 2；
wherein u isαrα axis component of rotor voltage under stator coordinate system;
uβrβ axis component of rotor voltage under stator coordinate system;
λαsα -axis component of stator flux linkage under stator coordinate system;
λβsβ -axis component of stator flux linkage under stator coordinate system;
v1the sum of the difference between a stator power regulating signal corresponding to the stator active power and a state feedback signal corresponding to the stator active power and a nonlinear feedback term corresponding to the stator active power;
v2the sum of the difference between the stator power adjusting signal corresponding to the stator reactive power and the state feedback signal corresponding to the stator reactive power and the nonlinear feedback term corresponding to the stator reactive power.
2. The system of claim 1, wherein the state feedback element is embodied as a linear feedback element.
3. A control method of a doubly-fed motor under a stator coordinate system is characterized by comprising the following steps:
determining the stator instantaneous output power of the doubly-fed motor according to the stator voltage and the stator current of the doubly-fed motor; determining a nonlinear feedback term according to the stator voltage, the stator current, the mechanical angular frequency of the rotor and the motor parameters of the doubly-fed motor;
determining a stator power adjusting signal according to the stator given power and the stator instantaneous output power of the doubly-fed motor; determining a state feedback signal according to the instantaneous output power of the stator;
determining the rotor voltage of the doubly-fed motor according to the nonlinear feedback term, the stator power adjusting signal and the state feedback signal;
the rotor voltage of the doubly-fed motor is determined by the following formula:
<mrow> <msub> <mi>u</mi> <mrow> <mi>&alpha;</mi> <mi>r</mi> </mrow> </msub> <mo>=</mo> <mfrac> <mrow> <mo>-</mo> <msub> <mi>v</mi> <mn>1</mn> </msub> <msub> <mi>&lambda;</mi> <mrow> <mi>&beta;</mi> <mi>s</mi> </mrow> </msub> <mo>+</mo> <msub> <mi>v</mi> <mn>2</mn> </msub> <msub> <mi>&lambda;</mi> <mrow> <mi>&alpha;</mi> <mi>s</mi> </mrow> </msub> </mrow> <mrow> <mo>|</mo> <msub> <mi>&lambda;</mi> <mi>s</mi> </msub> <msup> <mo>|</mo> <mn>2</mn> </msup> </mrow> </mfrac> <mo>;</mo> </mrow>1
<mrow> <msub> <mi>u</mi> <mrow> <mi>&beta;</mi> <mi>r</mi> </mrow> </msub> <mo>=</mo> <mfrac> <mrow> <msub> <mi>v</mi> <mn>2</mn> </msub> <msub> <mi>&lambda;</mi> <mrow> <mi>&beta;</mi> <mi>s</mi> </mrow> </msub> <mo>+</mo> <msub> <mi>v</mi> <mn>1</mn> </msub> <msub> <mi>&lambda;</mi> <mrow> <mi>&alpha;</mi> <mi>s</mi> </mrow> </msub> </mrow> <mrow> <mo>|</mo> <msub> <mi>&lambda;</mi> <mi>s</mi> </msub> <msup> <mo>|</mo> <mn>2</mn> </msup> </mrow> </mfrac> <mo>;</mo> </mrow>
λs＝λαs 2+λβs 2；
wherein u isαrα axis component of rotor voltage under stator coordinate system;
uβrβ axis component of rotor voltage under stator coordinate system;
λαsα -axis component of stator flux linkage under stator coordinate system;
λβsβ -axis component of stator flux linkage under stator coordinate system;
v1the sum of the difference between a stator power regulating signal corresponding to the stator active power and a state feedback signal corresponding to the stator active power and a nonlinear feedback term corresponding to the stator active power;
v2the sum of the difference between the stator power adjusting signal corresponding to the stator reactive power and the state feedback signal corresponding to the stator reactive power and the nonlinear feedback term corresponding to the stator reactive power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410214418.2A CN105099313B (en) | 2014-05-20 | 2014-05-20 | The control system and control method of a kind of double feedback electric engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410214418.2A CN105099313B (en) | 2014-05-20 | 2014-05-20 | The control system and control method of a kind of double feedback electric engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105099313A CN105099313A (en) | 2015-11-25 |
| CN105099313B true CN105099313B (en) | 2017-11-21 |
Family
ID=54579061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410214418.2A Active CN105099313B (en) | 2014-05-20 | 2014-05-20 | The control system and control method of a kind of double feedback electric engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105099313B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101053137A (en) * | 2004-08-27 | 2007-10-10 | Seg开关设备电子仪器合资有限公司 | Power control of an induction machine |
| CN101938244A (en) * | 2010-07-26 | 2011-01-05 | 邵诗逸 | Vector control method based on brushless cascade double-fed motor |
| CN103023021A (en) * | 2012-11-27 | 2013-04-03 | 上海电气集团股份有限公司 | Decoupling control method for nonlinear power of double-fed wind power generation system |
-
2014
- 2014-05-20 CN CN201410214418.2A patent/CN105099313B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101053137A (en) * | 2004-08-27 | 2007-10-10 | Seg开关设备电子仪器合资有限公司 | Power control of an induction machine |
| CN101938244A (en) * | 2010-07-26 | 2011-01-05 | 邵诗逸 | Vector control method based on brushless cascade double-fed motor |
| CN103023021A (en) * | 2012-11-27 | 2013-04-03 | 上海电气集团股份有限公司 | Decoupling control method for nonlinear power of double-fed wind power generation system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105099313A (en) | 2015-11-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4531751B2 (en) | Synchronous machine controller | |
| CN104767448B (en) | Control system and method for electronic three-phase variable speed electric motors, particularly | |
| CN107968611A (en) | Synchronous motor control circuit and control method | |
| CN107086836A (en) | An improved speed regulation method for permanent magnet synchronous motor with field weakening | |
| CN104335476A (en) | Device for controlling electric motor and method for controlling electric motor | |
| JP5779862B2 (en) | Rotating machine control device | |
| CN105262395A (en) | Method and system for controlling permanent magnet synchronous motor based on sliding mode control theory | |
| CN109038615A (en) | It is a kind of for inhibiting the stabilizer of flexible HVDC transmission system oscillation of power | |
| CN109167548A (en) | A kind of Vector Control System of Induction Motor field orientation antidote and its system | |
| US8759994B2 (en) | Method of controlling a wind turbine generator and apparatus for controlling electric power generated by a wind turbine generator | |
| CN107196569A (en) | A kind of speed estimate link PI parameter quantitative setting methods based on DSP | |
| CN104158209A (en) | Droopy voltage source-type control method for double feed blower adaptive to microgrid multimode operation | |
| CN110365051A (en) | A virtual synchronous motor control method based on adaptive command filter inversion | |
| Zhang et al. | Indirect field-oriented control of induction machines based on synergetic control theory | |
| JP2018085840A (en) | Motor control device | |
| Nguyen et al. | Advanced LVRT strategy for SCIG-based wind energy conversion systems using feedback linearization and sliding mode control | |
| Gurrala et al. | A modified Heffron-Phillip's model for the design of power system stabilizers | |
| TW201817153A (en) | Synchronous motor control circuit and control method | |
| CN105099313B (en) | The control system and control method of a kind of double feedback electric engine | |
| JP5585397B2 (en) | Rotating machine control device | |
| WO2020217438A1 (en) | Motor control device | |
| CN104980075B (en) | The control system and control method of a kind of double feedback electric engine | |
| CN110854883B (en) | An energy storage control method and system for enhancing system damping | |
| CN108599250A (en) | A kind of frequency optimization method based on virtual synchronous generator control | |
| CN109861280B (en) | Frequency control method and system of microgrid converter based on virtual synchronous generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Nanshan District Xueyuan Road in Shenzhen city of Guangdong province 518055 No. 1001 Nanshan Chi Park building B2 Patentee after: Vitamin Technology Co., Ltd. Address before: 518057 Nanshan District science and Technology Industrial Park, Guangdong, Shenzhen Branch Road, No. Patentee before: Aimosheng Network Energy Source Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220130 Address after: 712000 room 804, 8th floor, building 14, West Yungu phase I, Fengxi new town, Xixian new area, Xi'an, Shaanxi Patentee after: Weidi new energy Co.,Ltd. Address before: 518055 B2, Nanshan Zhiyuan, 1001 Nanshan District Xue Yuan Avenue, Shenzhen, Guangdong. Patentee before: VERTIV TECH Co.,Ltd. |