CN209731124U - A kind of control device of switched reluctance motor - Google Patents
A kind of control device of switched reluctance motor Download PDFInfo
- Publication number
- CN209731124U CN209731124U CN201920211229.8U CN201920211229U CN209731124U CN 209731124 U CN209731124 U CN 209731124U CN 201920211229 U CN201920211229 U CN 201920211229U CN 209731124 U CN209731124 U CN 209731124U
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- circuit
- switched reluctance
- reluctance motor
- machine controller
- electric machine
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Abstract
The utility model relates to a kind of control device of switched reluctance motor, including motor control unit, signal acquisition unit, power conversion unit and electric energy input unit；Motor control unit includes electric machine controller and driving circuit；Signal acquisition unit includes voltage detecting circuit, current detection circuit and position detection device；Position detection device uses with DSP and stores the state space observer of equipment；Electric energy input unit is connect by power conversion unit with switched reluctance motor, and is connect by voltage detecting circuit with electric machine controller；Electric machine controller is connect by driving circuit with power conversion unit；Power conversion unit is connect by current detection circuit with electric machine controller；Switched reluctance motor is connect by position detection device with electric machine controller；Current detection circuit is connect with position detection device.The utility model application state aeroscope estimates rotor-position and rotor speed, reduces the complexity and cost of system, substantially increases the reliability of system.
Description
Technical field
The utility model belongs to motor control technology field more particularly to a kind of control device of switched reluctance motor.
Background technique
Switched reluctance motor (SRM) driving due to its low cost, firm structure, reliable converter topology structure,
High efficiency and control in wide speed range is simple, it is considered to be the selection to attract people's attention in variable-speed motor driving.Its turn
No permanent magnet or winding on son, this structure not only reduce the cost of switched reluctance motor, and are provided for height
The ability of speed operation.Switched reluctance machines automobile, national defence, industrial and agricultural production and in terms of obtain and widely answer
With.
Currently, the converter of driving switch reluctance motor uses standard half bridge formula converter mostly, every phase uses two
Switch and two freewheeling diodes, the major advantage of control are flexibly that all phases can be with independent control.But it required opens
Pass quantity is more, and cost, loss and reliability are all affected.General controller is determined using position detector to be turned
Sub- location information not only increases the complexity and cost of system, and often reduces the reliability of drive system, final shadow
Ring motor control performance.
Utility model content
The purpose of the utility model is to provide a kind of control device of switched reluctance motor, to solve the above technical problems.
The utility model provides a kind of control device of switched reluctance motor, including motor control unit, signal acquisition list
Member, power conversion unit and electric energy input unit；
Motor control unit includes electric machine controller and driving circuit；
Signal acquisition unit includes voltage detecting circuit, current detection circuit and position detection device；Position detection device uses
State space observer with DSP and storage equipment；
Electric energy input unit is electrically connected by the power conversion unit and switched reluctance motor, and is examined by voltage
Slowdown monitoring circuit and electric machine controller are electrically connected；
Electric machine controller is electrically connected by driving circuit and power conversion unit；
Power conversion unit is electrically connected by current detection circuit and electric machine controller；
Switched reluctance motor is electrically connected by position detection device and electric machine controller；
Current detection circuit and position detection device are electrically connected.
Further, power conversion unit uses topological structure for the power inverter of c-type dump.
Further, electric energy input unit includes battery module and DC-DC converter circuit, battery module and DC-
DC converter circuit, power inverter are successively electrically connected.
Further, current detection circuit is connected with the output end of power inverter, the output end and power of driving circuit
The controlled end of converter is connected, and voltage detecting circuit is connected with the output end of battery module.
Further, current detection circuit includes Hall current sensor and translation circuit, and voltage detecting circuit includes suddenly
That voltage sensor and translation circuit.
According to the above aspect of the present invention, by control device of switched reluctance motor, using the power conversion of " c-type dump " topological structure
Device, the inverter of the structure have switch it is less, and the advantages of allow independent phase current to control, with traditional standard half bridge formula
Converter compares the complexity for reducing power converter construction, improves the reliability of system, so that control is simpler；
It is controlled using no position detector, application state aeroscope estimates rotor-position and rotor speed, examines with traditional position
It surveys device to compare, reduces the complexity and cost of system, substantially increase the reliability of system.In some particular surroundings once
Position detector failure, state space observer can effectively continue the operation of system.The state space observer can be high-precision
The detection rotor-position of degree and in full speed range be applicable in.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and can be implemented in accordance with the contents of the specification, below on the preferred embodiment of the present invention and the accompanying drawings in detail
It describes in detail bright as after.
Detailed description of the invention
Fig. 1 is the structural block diagram of the utility model control device of switched reluctance motor；
Fig. 2 is the topology diagram of the utility model control device of switched reluctance motor power inverter；
Fig. 3 is the circuit diagram of the utility model control device of switched reluctance motor current detection circuit；
Fig. 4 is the schematic diagram of the utility model control device of switched reluctance motor state space observer；
Fig. 5 is the circuit diagram of the utility model control device of switched reluctance motor driving circuit.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is not intended to limit the scope of the present invention for illustrating the utility model.
Join shown in Fig. 1, present embodiments provides a kind of control device of switched reluctance motor, including motor control unit, letter
Number acquisition unit, power conversion unit and electric energy input unit 1；
Motor control unit includes electric machine controller 9 and driving circuit 6；
Signal acquisition unit includes voltage detecting circuit 5, current detection circuit 7 and position detection device 8；Position detection device 8
Using the state space observer with DSP and storage equipment；
Electric energy input unit is electrically connected by power conversion unit (power inverter 2) and switched reluctance motor 3, and
It is electrically connected by voltage detecting circuit 5 and electric machine controller 9；Switched reluctance motor 3 is connect with load 4；
Electric machine controller 9 is electrically connected by driving circuit 6 and power conversion unit；
Power conversion unit is electrically connected by current detection circuit 7 and electric machine controller 9；
Switched reluctance motor 3 is electrically connected by position detection device 8 and electric machine controller 9；
Current detection circuit 7 and position detection device 8 are electrically connected.
The control device of switched reluctance motor is controlled using no position detector, and application state observer estimates rotor position
It sets and rotor speed reduces the complexity and cost of system, substantially increase system compared with traditional position detector
Reliability.Once position detector fails in some particular surroundings, state observer can effectively continue the operation of system.It should
State observer can high-precision detection rotor-position and in full speed range be applicable in.
In the present embodiment, power conversion unit uses topological structure for the power inverter 9 of c-type dump.Using " c-type
The inverter of the power inverter of dump " topological structure, the structure has switch less, and allows independent phase current control
Advantage reduces the complexity of power converter construction compared with traditional standard half bridge formula converter, improves system
Reliability, so that control is simpler.
In the present embodiment, electric energy input unit 1 includes battery module and DC-DC converter circuit, battery module
It is successively electrically connected with DC-DC converter circuit, power inverter 2.
In the present embodiment, current detection circuit 7 is connected with the output end of power inverter 2, the output end of driving circuit 6
It is connected with the controlled end of power inverter 2, voltage detecting circuit 5 is connected with the output end of battery module.
In the present embodiment, current detection circuit 7 includes Hall current sensor and translation circuit, voltage detecting circuit 5
Including Hall voltage sensor and translation circuit.
The utility model is described in further detail below.
As shown in Figure 1, the control device of switched reluctance motor includes electric energy input unit 1, power inverter 2, switch magnetic
Hinder motor 3, voltage detecting circuit 5, driving circuit 6, current detection circuit 7, position detection device 8, electric machine controller 9, control
Instruction 10, electric machine controller 9 are electrically connected by driving circuit 6 and power inverter 2, are also connected with electricity on power inverter 2
Energy input unit 1, electric energy input unit are electrically connected by voltage detecting circuit 5 and electric machine controller 9, and electric machine controller 9 is also
It is connected with current detection circuit 7, position detection device 8 and switched reluctance machines 3 and establishes electric connection.Electric energy input unit 1 includes
Battery module, DC-DC converter circuit, battery module successively electrically connect with DC-DC converter circuit, power inverter 2
It connects.Position detection device 8 is a state space observer, DSP (the digital signal including a high speed
Processing, DSP, digital signal processor), and the storage equipment of huge data can be stored.Power inverter 2
Topological structure is " c-type dump ".The current detection circuit 7 is connected with the output end of power inverter 2, driving circuit 6 it is defeated
Outlet is connected with the controlled end of power inverter IGBT, and voltage detecting circuit 5 is connected with the output end of battery.Current detecting electricity
Road 7 includes Hall current sensor and translation circuit, and voltage detecting circuit 5 includes Hall voltage sensor and translation circuit, is driven
Dynamic circuit 6 is made of driving chip, as shown in figure 5, driving circuit 6 selects IR2110 chip, it has light-coupled isolation (volume concurrently
It is small) and be the first choice of driving element in middle low power converting means the advantages of electromagnetic isolation (speed is fast).HIN and LIN are respectively
The signal input part of upper bridge arm and lower bridge arm, channel are mutually indepedent.HD and LO is the output end of upper bridge arm and lower bridge arm.Pass through electricity
Hold C1 and C2 and constitute its boostrap circuit, high-pressure side powers 15V, requires source current in 0.5A or more in actual experiment.
The electric machine controller 9,6 composition control circuit of driving circuit of the present embodiment, electric machine controller 9 receive control instruction
10；Voltage detecting circuit 5, current detection circuit 7, position detection device 8 form signal acquisition circuit；Power inverter 2 is power
Translation circuit；Current detection circuit 7, voltage detecting circuit 5 are all made of Hall sensor and translation circuit, and position detection device 9 is adopted
With state space observer；Primary circuit and power inverter 2, switched reluctance electric of the signal acquisition circuit by related sensor
Machine 3, electric energy input unit 1 are connected, the signal output end of the corresponding sensor secondary circuit of signal acquisition circuit by isolation with
The control circuit of electric machine controller 9 is electrically connected, and is obtained by calculation at this time with electric machine controller 9 for the control circuit of core
Operating status simultaneously determines correct control strategy, outputs a signal to the driving circuit 6 of driving power device, driving circuit 6 is main
It to be made of IR2110 chip, driving circuit 6 drives power inverter 2 after amplifying signal condition, then realizes to switch magnetic
Hinder the control of motor.It should be noted that the electric machine controller 9 in the present embodiment can be realized by existing control chip
State function.
As shown in Fig. 2, the utility model power converter topologies structure is " c-type dump ".By taking 1 phase as an example, when S1 is connected
When, DC bus-bar voltage Vdc will be applied to 1 phase winding.The electric current of 1 phase will increase, the path flowed through be Vdc anode, 1 phase around
Group, S1 and Vdc negative terminal.When this mutually turns off S1, electric current will be charged by 1 phase winding, D1 to electrolytic capacitor C, work as capacitance voltage
Reach a certain determining value, energy passes to power supply by switch Sc.The effect of diode Dc is capacitor both ends when Sc being prevented to be connected
It is connected directly.The advantages of this topological structure has switch few, and independent phase current is allowed to control, can be effective because structure is simple
Promote the response speed and reliability of electric machine control system.
As shown in figure 3, the electric signal for being input to amplifier is output to electric machine controller by amplification, isolation, voltage-stabiliser tube clipping
In DSP.Isolation and clipping ensure and will not burn out control chip DSP when front end electric current is excessive.
As shown in figure 4, state space equation is used to the dynamic response of description switched reluctance motor driving.It is non-based on this
Linear state space differential equation group constructs an observer to estimate rotor-position.The observer is output and input
Amount is respectively phase voltage and phase current, and state variable is stator magnetic linkage, rotor position angle and rotor speed.Phase current, magnetic linkage,
Rotor-position and rotor speed can be estimated by the observer.Pass through phase current and the switching magnetic-resistance electricity estimated by the observer
Comparison between the actual phase current of motivation, current error be used to adjust the parameter of this observer.It is estimated when observing its
Electric current when matching with actual current, which is considered as that the dynamic property of actual switch reluctance motor driving is correct
Reproduction, then the rotor-position of observer estimation is used to characterize actual rotor-position.The observer detects rotor
Applicability in the high-precision and full speed range of position is clear advantage.
The above is only the preferred embodiment of the utility model, is not intended to limit the utility model, it is noted that
For those skilled in the art, without deviating from the technical principle of the utility model, it can also do
Several improvements and modifications out, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (5)
1. a kind of control device of switched reluctance motor, which is characterized in that including motor control unit, signal acquisition unit, power
Converter unit and electric energy input unit；
The motor control unit includes electric machine controller and driving circuit；
The signal acquisition unit includes voltage detecting circuit, current detection circuit and position detection device；The position detection device
Using the state space observer with DSP and storage equipment；
The electric energy input unit is electrically connected by the power conversion unit and switched reluctance motor, and passes through the electricity
Detection circuit and the electric machine controller is pressed to be electrically connected；
The electric machine controller is electrically connected by the driving circuit and the power conversion unit；
The power conversion unit is electrically connected by the current detection circuit and the electric machine controller；
The switched reluctance motor is electrically connected by the position detection device and the electric machine controller；
The current detection circuit and the position detection device are electrically connected.
2. control device of switched reluctance motor according to claim 1, which is characterized in that the power conversion unit uses
Topological structure is the power inverter of c-type dump.
3. control device of switched reluctance motor according to claim 2, which is characterized in that the electric energy input unit includes
Battery module and DC-DC converter circuit, the battery module and the DC-DC converter circuit, power inverter according to
Secondary electric connection.
4. control device of switched reluctance motor according to claim 3, which is characterized in that the current detection circuit and institute
The output end for stating power inverter is connected, and the output end of the driving circuit is connected with the controlled end of the power inverter, institute
Voltage detecting circuit is stated to be connected with the output end of the battery module.
5. control device of switched reluctance motor according to claim 1, which is characterized in that the current detection circuit includes
Hall current sensor and translation circuit, the voltage detecting circuit include Hall voltage sensor and translation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920211229.8U CN209731124U (en) | 2019-02-19 | 2019-02-19 | A kind of control device of switched reluctance motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920211229.8U CN209731124U (en) | 2019-02-19 | 2019-02-19 | A kind of control device of switched reluctance motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209731124U true CN209731124U (en) | 2019-12-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920211229.8U Expired - Fee Related CN209731124U (en) | 2019-02-19 | 2019-02-19 | A kind of control device of switched reluctance motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209731124U (en) |
-
2019
- 2019-02-19 CN CN201920211229.8U patent/CN209731124U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191203 Termination date: 20200219 |