CN208797861U - Direct current generator afterflow controller - Google Patents
Direct current generator afterflow controller Download PDFInfo
- Publication number
- CN208797861U CN208797861U CN201821294890.1U CN201821294890U CN208797861U CN 208797861 U CN208797861 U CN 208797861U CN 201821294890 U CN201821294890 U CN 201821294890U CN 208797861 U CN208797861 U CN 208797861U
- Authority
- CN
- China
- Prior art keywords
- signal
- bridge arm
- circuit
- control
- oxide
- 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.)
- Withdrawn - After Issue
Links
- 230000001360 synchronised effect Effects 0.000 claims abstract description 52
- 239000004065 semiconductor Substances 0.000 claims abstract description 43
- 238000006243 chemical reaction Methods 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 20
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Inverter Devices (AREA)
Abstract
The utility model embodiment provides a kind of direct current generator afterflow controller, comprising: DC MOTOR CONTROL module, including the first bridge arm and the second bridge arm are equipped with metal-oxide-semiconductor and metal-oxide-semiconductor driving circuit in the second bridge arm；Signal generating module is controlled, the first bridge arm control driving signal end, the second bridge arm control driving signal end and pwm signal end are equipped with；Module occurs for synchronous freewheeling enable signal；Logic conversion circuit, the signal input part of logic conversion circuit occurs module with control signal generating module and synchronous freewheeling enable signal and is connected, signal output end is connected with metal-oxide-semiconductor driving circuit, when first bridge arm is closed, logic conversion circuit controls driving signal according to the first bridge arm, the second bridge arm control driving signal, synchronous freewheeling enable signal and pwm signal carry out logical process and export the second bridge arm control signal driving metal-oxide-semiconductor and open to make freewheel current flow through metal-oxide-semiconductor to realize synchronous freewheeling.The utility model embodiment effectively reduces the loss and calorific value of afterflow.
Description
Technical field
The utility model embodiment is related to DC MOTOR CONTROL field more particularly to a kind of direct current generator afterflow controller.
Background technique
In the drive control of direct current generator, it will usually control motor speed using PWM modulator, the mechanics such as torque refer to
Mark (usually upper bridge arm modulation, lower bridge arm are not modulated).When pwm signal is low level, i.e., when upper bridge arm is closed, machine winding
It will act as an inductance, but electric current cannot be mutated again, therefore, be continued by the diode of the phase lower bridge arm NMOS tube
Stream, thus can generate biggish loss.When motor load is bigger, freewheel current is bigger, therefore loss is more serious, influences inverse
Become device efficiency.
Utility model content
The technical problem to be solved by the embodiment of the utility model is, a kind of direct current generator afterflow controller is provided, with
Just the direct current generator afterflow control of high efficiency, low-power consumption is realized.
In order to solve the above-mentioned technical problem, the utility model embodiment provides the following technical solutions: a kind of direct current generator is continuous
Stream controller, comprising:
DC MOTOR CONTROL module, including the first bridge arm and the second bridge arm are provided with metal-oxide-semiconductor and use in second bridge arm
In the metal-oxide-semiconductor driving circuit for driving the metal-oxide-semiconductor on-off；
Control signal generating module, it is being connected with the DC MOTOR CONTROL module and be equipped with respectively correspond export the first bridge
The first bridge arm that arm controls driving signal, the second bridge arm control driving signal and pwm signal controls driving signal end, the second bridge arm
Control driving signal end and pwm signal end；
Module occurs for synchronous freewheeling enable signal, for generating and exporting synchronous freewheeling enable signal；And
Logic conversion circuit, the signal input part of the logic conversion circuit and the control signal generating module and synchronous
Afterflow enable signal occurs module and is connected, and signal output end is connected with the metal-oxide-semiconductor driving circuit, sends out in the control signal
When the pwm control signal of raw module output closes the first bridge arm, the logic conversion circuit is controlled according to first bridge arm
Driving signal, the second bridge arm control driving signal, synchronous freewheeling enable signal and pwm signal carry out logical process and export the second bridge
Arm control signal drives the metal-oxide-semiconductor to open to the metal-oxide-semiconductor driving circuit makes freewheel current flow through the metal-oxide-semiconductor realization together
Walk afterflow.
Further, the logic conversion circuit includes:
First not circuit, the input terminal of first not circuit control driving signal end phase with first bridge arm
Even, for being exported again after first bridge arm is controlled driving signal reverse phase；
OR circuit, the input terminal of the OR circuit respectively with the output end of first not circuit, pwm signal end
With synchronous freewheeling enable signal occur module be connected with obtain the first bridge arm after reverse phase control driving signal, pwm signal and together
The first logical operation signal is exported after step afterflow enable signal and progress or door operation；
The output end and the second bridge arm of NOR gate circuit, the input terminal of the NOR gate circuit and the OR circuit control
After driving signal end is connected to obtain the first logical operation signal and the second bridge arm control driving signal and carry out XOR gate operation
Export the second logical operation signal；And
Second not circuit, the output end of the input terminal connection XOR gate of second not circuit is to obtain described second
Logical operation signal simultaneously generate the second bridge arm control signal after NOT gate operation and export to the metal-oxide-semiconductor driving electricity
Road.
Further, it includes comparator and its peripheral circuit, the comparison that module, which occurs, for the synchronous freewheeling enable signal
When the input signal of device is more than the reference voltage of comparator, comparator generates synchronous freewheeling enable signal.
Further, the synchronous freewheeling enable signal occur that module includes power supply VCC and one end is connected to power supply VCC and
For the other end by the switch of resistance eutral grounding, one end of the switch connection resistance is also used as enable signal output end to be connected to logic
Translation circuit.
Further, the DC MOTOR CONTROL module is H bridge control module or three phase full bridge control module.
After adopting the above technical scheme, the utility model embodiment at least has the following beneficial effects: the utility model reality
It applies example and module and logic conversion circuit occurs by increasing synchronous freewheeling enable signal, when the first bridge arm is controlled in pwm signal
When lower closing, the logic conversion circuit controls driving signal according to the first bridge arm, the second bridge arm controls driving signal, it is continuous to synchronize
It flows enable signal and pwm signal carries out logical process and exports the metal-oxide-semiconductor driving circuit that the second bridge arm controls signal to the second bridge arm
So that freewheel current is flowed through the metal-oxide-semiconductor realization synchronous freewheeling to drive the metal-oxide-semiconductor of second bridge arm to open, is effectively utilized
The characteristics of metal-oxide-semiconductor conduction impedance is low, electric current can be with two-way flow, bring is lost when substantially reducing DC MOTOR CONTROL, subtracts
Calorific value when small afterflow, improves the efficiency and reliability of inverter.
Detailed description of the invention
Fig. 1 is the schematic block circuit diagram of an alternative embodiment of the utility model direct current generator afterflow controller.
Fig. 2 is the circuit diagram of an alternative embodiment of the utility model direct current generator afterflow controller.
Fig. 3 is the electricity of the metal-oxide-semiconductor driving circuit of an alternative embodiment of the utility model direct current generator afterflow controller
Lu Tu.
Fig. 4 is the method flow diagram that afterflow control is carried out using the utility model direct current generator afterflow controller.
Fig. 5 is the detailed process of step S3 when carrying out afterflow control using the utility model direct current generator afterflow controller
Figure.
Specific embodiment
The application is described in further detail in the following with reference to the drawings and specific embodiments.It should be appreciated that signal below
Property embodiment and explanation be only used to explain the utility model, be not intended to limit the scope of the present invention, moreover, not conflicting
In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.
As shown in Figures 1 and 3, the utility model embodiment provides a kind of direct current generator afterflow controller, comprising:
DC MOTOR CONTROL module 1, including the first bridge arm 10 and the second bridge arm 12 are provided in second bridge arm 12
Metal-oxide-semiconductor 121 and metal-oxide-semiconductor driving circuit 123 for driving 121 on-off of metal-oxide-semiconductor；
Control signal generating module 3, it is being connected with the DC MOTOR CONTROL module 1 and equipped with respectively corresponding output first
The first bridge arm that bridge arm controls driving signal, the second bridge arm control driving signal and pwm signal controls driving signal end 30, second
Bridge arm controls driving signal end 32 and pwm signal end 34；
Module 5 occurs for synchronous freewheeling enable signal, for generating and exporting synchronous freewheeling enable signal；And
Logic conversion circuit 7, the signal input part of the logic conversion circuit 7 and the control signal generating module 3 and
Synchronous freewheeling enable signal occurs module 5 and is connected, and signal output end is connected with the metal-oxide-semiconductor driving circuit 123, in the control
When the pwm control signal that signal generating module 1 processed exports closes the first bridge arm 10, the logic conversion circuit 7 is according to described
First bridge arm controls driving signal, the second bridge arm control driving signal, synchronous freewheeling enable signal and pwm signal and carries out at logic
Reason output the second bridge arm control signal drives the metal-oxide-semiconductor 121 to open to the metal-oxide-semiconductor driving circuit 123 makes freewheel current
It flows through the metal-oxide-semiconductor 121 and realizes synchronous freewheeling.
In the specific implementation, the pwm signal can be generated as the PWM chip built in the direct current generator afterflow controller,
It can also be generated by external PWM chip, in the utility model one embodiment, by the way of external PWM chip.
By increasing synchronous freewheeling enable signal module 5 and logic conversion circuit 7 occur for the utility model embodiment, when
When first bridge arm 10 is closed under pwm signal control, the logic conversion circuit 7 controls driving signal, the according to the first bridge arm
Two bridge arms control driving signal, synchronous freewheeling enable signal and pwm signal and carry out logical process output the second bridge arm control signal
Make freewheel current stream to the metal-oxide-semiconductor driving circuit 123 of the second bridge arm 12 to drive the metal-oxide-semiconductor 121 of second bridge arm 12 to open
Realize synchronous freewheeling through the metal-oxide-semiconductor 121, be effectively utilized 121 conduction impedance of metal-oxide-semiconductor is low, electric current can be with the spy of two-way flow
Point, bring is lost when substantially reducing DC MOTOR CONTROL, reduces calorific value when afterflow, improves the efficiency of inverter
And reliability.
In an alternative embodiment of the utility model, the logic conversion circuit 7 includes:
First not circuit 70, the input terminal of first not circuit 70 and first bridge arm control driving signal end
It is connected, for being exported again after first bridge arm is controlled driving signal reverse phase；
OR circuit 72, the input terminal of the OR circuit 72 output end, the PWM with first not circuit 70 respectively
Signal end occurs module 5 with synchronous freewheeling enable signal and is connected to obtain the control of the first bridge arm after reverse phase driving signal, PWM letter
Number and synchronous freewheeling enable signal and carry out or door operation after export the first logical operation signal；
NOR gate circuit 74, the output end and the second bridge of the input terminal of the NOR gate circuit 74 and the OR circuit 72
Arm control driving signal end 32 is connected to obtain the first logical operation signal and the second bridge arm control driving signal and carry out exclusive or
The second logical operation signal is exported after door operation；And
Second not circuit 76, the output end of the input terminal connection NOR gate circuit 74 of second not circuit 76 is to obtain
It obtains the second logical operation signal and generates the second bridge arm control signal after carrying out NOT gate operation and export to the MOS
Tube drive circuit 123.
In the specific implementation, control chip, single-chip microcontroller or digital signal processor etc. can be used and realize logical process, at this
In utility model one embodiment, logical process is realized using control chip.
The utility model embodiment is by using the first not circuit 70, OR circuit 72, NOR gate circuit 74 and second
Not circuit 76 carries out a series of logical process, and the first bridge arm is controlled the enabled letter of driving signal, pwm signal, synchronous freewheeling
Number and the second bridge arm control driving signal disposed of in its entirety control signal at the second bridge arm and drive the metal-oxide-semiconductor driving circuit 123,
Circuit structure is simple, facilitates implementation, also operator is facilitated to understand, low in cost, and can promote whole direct current generator work
Efficiency reduces loss.
In an alternative embodiment of the utility model, it includes comparing that module 5, which occurs, for the synchronous freewheeling enable signal
Device 50 and its peripheral circuit, when the input signal of the comparator 50 is more than the reference voltage of comparator 50, comparator 50 is generated
Synchronous freewheeling enable signal.The utility model embodiment generates synchronous freewheeling enable signal, circuit knot by using comparator
Structure is simple, and easy to set up and operation.
In another alternative embodiment of the utility model, it includes electricity that module 5, which occurs, for the synchronous freewheeling enable signal
Source VCC and one end are connected to power supply VCC and the other end passes through the switch S of resistance eutral grounding, one end of the switch S connection resistance R
Also logic conversion circuit 7 is connected to as enable signal output end.The utility model embodiment is by using power supply VCC and switch
S and resistance R cooperation, only needs closure switch S, and power supply VCC can be defeated for the corresponding signal of logic conversion circuit 7 by switch S
When entering end to provide voltage and generate synchronous freewheeling enable signal, and disconnecting switch S, the corresponding signal of logic conversion circuit 7 is defeated
The voltage of power supply VCC application will not be obtained by entering end, i.e., do not obtain synchronous freewheeling enable signal.The utility model embodiment it is same
Generation and the control for walking afterflow enable signal are very easy.
In another alternative embodiment of the utility model, the DC MOTOR CONTROL module 1 be H bridge control module or
Three phase full bridge control module.In an embodiment as illustrated in figure 2, the DC MOTOR CONTROL module 1 is that three phase full bridge controls mould
Block, accordingly, first bridge arm 10 and second bridge arm 12 can be set to any phase of three phase full bridge control module
Upper bridge arm and lower bridge arm.The utility model embodiment is by that can use H bridge control module or three phase full bridge control module conduct
The DC MOTOR CONTROL module 1 keeps the scope of application of direct current generator afterflow controller more extensive.
As shown in figure 4, being had using the method that the utility model embodiment direct current generator afterflow controller carries out afterflow control
Body includes the following steps:
S1: output pwm control signal closes the first bridge arm 10 of DC MOTOR CONTROL module 1；
S2: generating and exports synchronous freewheeling enable signal；
S3: according to the first bridge arm control driving signal, the second bridge arm control driving signal, synchronous freewheeling enable signal and
Pwm signal carries out logical process and exports the second bridge arm control signal；
S4: the metal-oxide-semiconductor in the second bridge arm 12 of signal driving DC MOTOR CONTROL module 1 is controlled according to second bridge arm
121 open and make freewheel current flow through the metal-oxide-semiconductor 121 to realize synchronous freewheeling.
The utility model embodiment closes the first bridge arm 10 of DC MOTOR CONTROL module 1 by exporting pwm control signal
It closes, and generates and export synchronous freewheeling enable signal, driving signal, the control driving of the second bridge arm can be controlled according to the first bridge arm
Signal, synchronous freewheeling enable signal and pwm signal carry out logical process and export the second bridge arm controlling signal, finally according to described the
Metal-oxide-semiconductor 121 in second bridge arm 12 of two bridge arms control signal driving DC MOTOR CONTROL module 1, which is opened, flows through freewheel current
The metal-oxide-semiconductor 121 realizes synchronous freewheeling, and entire control process is simple and fast, and 121 conduction impedance of metal-oxide-semiconductor efficiently used it is low,
The characteristics of electric current can be with two-way flow, bring is lost when substantially reducing DC MOTOR CONTROL, reduces the second bridge arm
The fever of NMOS tube improves the efficiency and reliability of inverter.
As shown in figure 5, the step S3 in the above-mentioned methods further comprises:
S31 obtains the first bridge arm control driving signal and exports after carrying out reverse phase；
S32, first bridge arm control driving signal, pwm signal and synchronous freewheeling enable signal after obtaining reverse phase are simultaneously
The first logical operation signal is exported after progress or door operation；
S33, after obtaining the first logical operation signal and the second bridge arm control driving signal and carrying out XOR gate operation
Export the second logical operation signal；And
S34 is obtained after the second logical operation signal carries out the second NOT gate operation and is generated the second bridge arm control letter
Number.
The utility model embodiment is by successively carrying out the first NOT gate operation or door operation, XOR gate operation and second are non-
Door operation and finally obtain the second bridge arm control signal, calculating process is simple and fast, effectively improve control processing efficiency.
In the above-mentioned methods, the step S2 includes: the benchmark to the input of the input terminal of comparator 50 more than comparator 50
The input signal of voltage generates the synchronous freewheeling enable signal by the comparator 50.The utility model embodiment by
Input to comparator 50 is more than the input signal of the reference voltage of comparator 50, so that so that comparator 50 is generated synchronous freewheeling makes
Energy signal, method is very simple and convenient, is also conducive to the setting of operator.
In the above-mentioned methods, the step S2 includes: that power supply VCC is passed through the switch S being sequentially connected in series and resistance R ground connection,
And one end of the connection resistance R of the switch S is closed the switch and generates synchronous freewheeling and enable as enable signal output end
Signal.The utility model embodiment cooperates by using power supply VCC and switch S and resistance R, only needs closure switch S, power supply VCC
Voltage can be provided for the corresponding signal input part of logic conversion circuit 7 by switch S generate synchronous freewheeling enable signal,
And when disconnecting switch S, the corresponding signal input part of logic conversion circuit 7 is the voltage that will not obtain power supply VCC52 application, i.e.,
Synchronous freewheeling enable signal is not obtained.The generation and control of the synchronous freewheeling enable signal of the utility model embodiment are very simple
Just.
The embodiments of the present invention are described above in conjunction with attached drawing, but the utility model is not limited to
The specific embodiment stated, the above mentioned embodiment is only schematical, rather than restrictive, this field it is common
Technical staff is not departing from the utility model aims and scope of the claimed protection situation under the enlightenment of the utility model
Under, many forms can be also made, these are belonged within the protection of the utility model.
Claims (5)
1. a kind of direct current generator afterflow controller, comprising:
DC MOTOR CONTROL module, including the first bridge arm and the second bridge arm are provided with metal-oxide-semiconductor in second bridge arm and for driving
Move the metal-oxide-semiconductor driving circuit of the metal-oxide-semiconductor on-off；
Control signal generating module, it is being connected with the DC MOTOR CONTROL module and be equipped with respectively correspond export the first bridge arm control
The first bridge arm control driving signal end of driving signal processed, the second bridge arm control driving signal and pwm signal, the control of the second bridge arm
Driving signal end and pwm signal end；
It is characterized in that, the direct current generator afterflow controller further include:
Module occurs for synchronous freewheeling enable signal, for generating and exporting synchronous freewheeling enable signal；And
Logic conversion circuit, the signal input part of the logic conversion circuit and the control signal generating module and synchronous freewheeling
Enable signal occurs module and is connected, and signal output end is connected with the metal-oxide-semiconductor driving circuit, and mould occurs in the control signal
When the pwm control signal of block output closes the first bridge arm, the logic conversion circuit is controlled according to first bridge arm and is driven
Signal, the second bridge arm control driving signal, synchronous freewheeling enable signal and pwm signal carry out logical process and export the second bridge arm control
Signal processed driven to the metal-oxide-semiconductor driving circuit metal-oxide-semiconductor open make freewheel current flow through metal-oxide-semiconductor realization synchronize it is continuous
Stream.
2. direct current generator afterflow controller as described in claim 1, which is characterized in that the logic conversion circuit includes:
First not circuit, the input terminal of first not circuit are connected with first bridge arm control driving signal end, use
It is exported again after first bridge arm is controlled driving signal reverse phase；
OR circuit, the input terminal of the OR circuit respectively with the output end of first not circuit, pwm signal end and same
Step afterflow enable signal occur module be connected with obtain the first bridge arm after reverse phase control driving signal, pwm signal with it is synchronous continuous
The first logical operation signal is exported after stream enable signal and progress or door operation；
The output end of NOR gate circuit, the input terminal of the NOR gate circuit and the OR circuit and the control of the second bridge arm drive
Signal end is connected with the first logical operation signal of acquisition and the second bridge arm control driving signal and exports after carrying out XOR gate operation
Second logical operation signal；And
Second not circuit, the output end of the input terminal connection XOR gate of second not circuit is to obtain second logic
Operation signal is simultaneously carried out generating the second bridge arm control signal after NOT gate operation and be exported to the metal-oxide-semiconductor driving circuit.
3. direct current generator afterflow controller as claimed in claim 1 or 2, which is characterized in that the synchronous freewheeling enable signal
It includes comparator and its peripheral circuit that module, which occurs, when the input signal of the comparator is more than the reference voltage of comparator, than
Synchronous freewheeling enable signal is generated compared with device.
4. direct current generator afterflow controller as claimed in claim 1 or 2, which is characterized in that the synchronous freewheeling enable signal
Occur that module includes power supply VCC and one end is connected to power supply VCC and the other end by the switch of resistance eutral grounding, the switch connects
One end of resistance is also used as enable signal output end to be connected to logic conversion circuit.
5. direct current generator afterflow controller as claimed in claim 1 or 2, which is characterized in that the DC MOTOR CONTROL module
For H bridge control module or three phase full bridge control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821294890.1U CN208797861U (en) | 2018-08-10 | 2018-08-10 | Direct current generator afterflow controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821294890.1U CN208797861U (en) | 2018-08-10 | 2018-08-10 | Direct current generator afterflow controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208797861U true CN208797861U (en) | 2019-04-26 |
Family
ID=66205294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821294890.1U Withdrawn - After Issue CN208797861U (en) | 2018-08-10 | 2018-08-10 | Direct current generator afterflow controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208797861U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108599640A (en) * | 2018-08-10 | 2018-09-28 | 深圳市振华微电子有限公司 | Direct current generator afterflow controller and control method |
-
2018
- 2018-08-10 CN CN201821294890.1U patent/CN208797861U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108599640A (en) * | 2018-08-10 | 2018-09-28 | 深圳市振华微电子有限公司 | Direct current generator afterflow controller and control method |
| CN108599640B (en) * | 2018-08-10 | 2024-03-19 | 深圳市振华微电子有限公司 | DC motor continuous flow controller and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101499771B (en) | Frequency-changing speed-regulating driver for energy feedback three phase motor with three phase electric power | |
| CN206932189U (en) | A kind of circuit for controlling motor | |
| CN208797861U (en) | Direct current generator afterflow controller | |
| CN104564461B (en) | A kind of Drive Circuit for Injector Solenoid Valve of Current Feedback Control | |
| CN106169805A (en) | A kind of super low-power consumption power-supply system and control method thereof and electronic equipment | |
| CN110233498A (en) | A kind of grid-connected multi-level inverse conversion device of dual input and its control method | |
| CN102684518B (en) | High-frequency redundancy PWM (pulse-width modulation) rectifier device and method based on instantaneous current feedforward control | |
| CN202679300U (en) | Controller for brush DC motor | |
| CN101026353A (en) | Control method and device for increasing DC brushless motor speed | |
| CN102290807B (en) | Small-sized wind power generation controller with wide voltage input range | |
| CN104656034A (en) | DC electronic load | |
| CN206545724U (en) | A kind of flow instrument valve controling circuit | |
| CN203387448U (en) | Multipath soft-start system used for electric vehicle | |
| CN205610508U (en) | Brushless DC motor hardware commutation circuit | |
| CN108923702A (en) | DC brushless motor feedback brake control method | |
| CN209692654U (en) | A kind of permanent magnet synchronous motor control device based on DSPIC chip | |
| CN104253594B (en) | The operating method of charging module, drive circuit and drive circuit | |
| CN108599640A (en) | Direct current generator afterflow controller and control method | |
| CN209030117U (en) | A kind of single-phase Sinusoidal Inverter system adjusted based on feed forward approach | |
| CN107181418A (en) | A kind of design of the three-level inverter vector control apparatus based on FPGA | |
| CN204304795U (en) | The power frequency synchronous freewheeling control device of alternating-current chopper circuit | |
| CN209472542U (en) | A kind of frequency converter controllable silicon drive circuit | |
| CN101085602A (en) | Electric brake and energy recovery system for brushless DC motor | |
| CN207010570U (en) | Single-phase sine wave inverter | |
| CN203800852U (en) | Permanent magnet synchronous motor speed regulating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190426 Effective date of abandoning: 20240319 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190426 Effective date of abandoning: 20240319 |