CN108400573A - Continued flow tube guard method under a kind of switch reluctance machine drive low speed chopping mode - Google Patents
Continued flow tube guard method under a kind of switch reluctance machine drive low speed chopping mode Download PDFInfo
- Publication number
- CN108400573A CN108400573A CN201710360957.0A CN201710360957A CN108400573A CN 108400573 A CN108400573 A CN 108400573A CN 201710360957 A CN201710360957 A CN 201710360957A CN 108400573 A CN108400573 A CN 108400573A
- Authority
- CN
- China
- Prior art keywords
- temperature
- copped wave
- value
- low speed
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electric Motors In General (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses continued flow tube guard methods under a kind of switch reluctance machine drive low speed chopping mode; it is related to technical field of motors; it is included in beside lower bridge fly-wheel diode and temperature sensor is set; temperature sampling is carried out when motor enters low speed chopping mode; finally formula is protected to go out current flow copped wave value with by copped wave; and current flow copped wave value is controlled within the scope of current chopping value upper and lower bound, it solves continued flow tube when switched reluctance motor controller is operated in low speed chopping mode and drastically generates heat and lead to thermal runaway problem；The present invention protects formula using the method for measuring lower bridge fly-wheel diode operating temperature by copped wave, realizes a kind of at low cost, continued flow tube guard method under highly reliable switch reluctance machine drive low speed chopping mode.
Description
Technical field
The present invention relates to technical field of motors, and in particular to continues under a kind of switch reluctance machine drive low speed chopping mode
Flow tube guard method.
Background technology
Switched reluctance motor speed control system (Switched Reluctance Drive：SRD it is) after frequency control system
The latest generation continuous speed regulation system to grow up after system, Speed Regulating System of Brushless DC Motor is collection modern microelectronic skill
Light that art, digital technology, power electronic technique, infrared electro technology and modern electromagnetic, design and manufacturing technology are integrated,
Mechanical, electrical integration new and high technology.It has the advantages that governing system has both direct current, two class governing systems of exchange.
A kind of typical topology of driving circuit of switching magnetic-resistance is asymmetry half-bridge circuit, when switching magnetic-resistance driver work
Make under low speed current chopping, lower bridge continued flow tube operating current and lower bridge metal-oxide-semiconductor operating current are of substantially equal.Lower bridge diode
Temperature steeply rises, and lower bridge diode uses Schottky diode, it is easy to generate thermal runaway problem.
The fly-wheel diode of existing scheme bigger current value directly uses lower copped wave CCC current values；Cost compared with
Height, poor robustness.
Invention content
The object of the present invention is to provide continued flow tube guard method under a kind of switch reluctance machine drive low speed chopping mode,
It solves continued flow tube when switched reluctance motor controller is operated in low speed chopping mode drastically to generate heat and lead to thermal runaway problem.
To achieve the above object, the present invention uses following technical scheme：
Continued flow tube guard method under a kind of switch reluctance machine drive low speed chopping mode, includes the following steps：
Step 1：The control system of switched reluctance machines includes：Switched reluctance machines, power inverter, control chip, position
Set detector, temperature sensor and Hall sensor, switched reluctance machines, position detector, temperature sensor and hall sensing
Device is all connected with control chip；
Power inverter includes upper bridge driving circuit, upper bridge freewheeling circuit, lower bridge driving circuit and lower bridge freewheeling circuit, on
Bridge driving circuit, upper bridge freewheeling circuit and lower bridge driving circuit, lower bridge freewheeling circuit with the electrical-coil of switched reluctance machines
L1 is electrically connected, and upper bridge circuit is made of upper bridge sustained diode 1 and upper bridge driving metal-oxide-semiconductor Q1, and lower bridge freewheeling circuit is continued by lower bridge
Flow diode D2 and lower bridge driving metal-oxide-semiconductor D2 compositions；Hall sensor is used to acquire the rotating speed of motor；
Step 2：It controls chip and is equipped with AD sample ports, temperature sensor R1, temperature are set on the side of lower bridge freewheeling circuit
Spend the AD sample ports of sensor R1 electrical connection control chips；Temperature sensor R1 is used to measure the temperature of lower bridge sustained diode 2
Degree
Step 3：Main control chip judges whether switched reluctance machines work by the collected rotating speed of Hall sensor institute
In low speed copped wave section：It is then to control chip to start timing, executes step 4；It is no, then follow the steps 3；
Step 4：Initial temperature value is set as T0, current temperature value T1；Control chip is read Current Temperatures sensor R1 and is adopted
The temperature value of collection, and assign the temperature value to T0；
Step 5：Judge to control whether chip timing reaches 5ms：It is to then follow the steps 6；It is no, then follow the steps 5；
Step 6：Control chip reads the temperature value of Current Temperatures sensor R1 acquisitions again, and assigns the temperature value to T1；
Step 7：Calculate temperature difference the Δ t, Δ t=T1-T0 of temperature value twice；
Step 8:T1, T0 and Δ t are substituted into copped wave and protect formula, calculates current flow copped wave value CCC, the copped wave is protected
Protecting formula is：
CCC=CCC-G1* ((T1-T0)/Δ t)-G2* (T1-Tmax)；
In formula：CCC is current low speed chopper current value；G1 is that temperature rises slope gain coefficient；G2 is temperature difference gain coefficient；
Tmax is that switched reluctance machines work long hours the temperature value upper limit；
If T1 is more than T0, and T1 is more than Tmax, then temperature rises gain and temperature difference gain reduces current flow copped wave value simultaneously；If
T1 is less than T0 and T1 is more than Tmax, then temperature rises gain increase current flow copped wave value, temperature difference gain reduction current flow copped wave value；
If T1 is more than T0 and T1 is less than Tmax, temperature rises gain reduction current flow copped wave value, and temperature difference gain improves current flow copped wave
Value；
Step 9：The limitation of bound is done to current flow copped wave value CCC：Default CCCmax is maximum allowed current copped wave
Value, it is minimum acceptable current copped wave value to preset CCCmin, and the driver control of control chip informing switched reluctance machines switchs magnetic
The operating condition for hindering motor, makes current flow copped wave value CCC when its work between CCCmax and CCCmin.
The control chip is ARM controller.
The temperature sensor R1 is NTC temperature sensors.
Continued flow tube guard method under a kind of switch reluctance machine drive low speed chopping mode of the present invention, solves
Continued flow tube drastically generates heat and leads to thermal runaway problem when switched reluctance motor controller is operated in low speed chopping mode；The present invention adopts
The method for descending bridge fly-wheel diode operating temperature with measurement, and formula is protected by copped wave, realize a kind of at low cost, reliability
Continued flow tube guard method under strong switch reluctance machine drive low speed chopping mode.
Description of the drawings
Fig. 1 is the principle of the present invention figure block diagram；
Fig. 2 is the schematic diagram of the upper bridge freewheeling circuit and lower bridge freewheeling circuit of the present invention；
Fig. 3 is the flow chart of the present invention.
Specific implementation mode
Continued flow tube guard method under a kind of switch reluctance machine drive low speed chopping mode as shown in FIG. 1 to FIG. 3, packet
Include following steps：
Step 1：Switched reluctance machines, power inverter, control chip, position detector, temperature sensor and Hall pass
Sensor, switched reluctance machines, position detector, temperature sensor and Hall sensor are all connected with control chip；
Power inverter includes upper bridge driving circuit, upper bridge freewheeling circuit, lower bridge driving circuit and lower bridge freewheeling circuit, on
Bridge driving circuit, upper bridge freewheeling circuit and lower bridge driving circuit, lower bridge freewheeling circuit with the electrical-coil of switched reluctance machines
L1 is electrically connected, and upper bridge circuit is made of upper bridge sustained diode 1 and upper bridge driving metal-oxide-semiconductor Q1, and lower bridge freewheeling circuit is continued by lower bridge
Flow diode D2 and lower bridge driving metal-oxide-semiconductor D2 compositions；Hall sensor is used to acquire the rotating speed of motor；
Step 2：It controls chip and is equipped with AD sample ports, temperature sensor R1, temperature are set on the side of lower bridge freewheeling circuit
Spend the AD sample ports of sensor R1 electrical connection control chips；Temperature sensor R1 is used to measure the temperature of lower bridge sustained diode 2
Degree
Step 3：Main control chip judges whether switched reluctance machines work by the collected rotating speed of Hall sensor institute
In low speed copped wave section：It is then to control chip to start timing, executes step 4；It is no, then follow the steps 3；
Step 4：Initial temperature value is set as T0, current temperature value T1；Control chip is read Current Temperatures sensor R1 and is adopted
The temperature value of collection, and assign the temperature value to T0；
Step 5：Judge to control whether chip timing reaches 5ms：It is to then follow the steps 6；It is no, then follow the steps 5；
Step 6：Control chip reads the temperature value of Current Temperatures sensor R1 acquisitions again, and assigns the temperature value to T1；
Step 7：Calculate temperature difference the Δ t, Δ t=T1-T0 of temperature value twice；
Step 8:T1, T0 and Δ t are substituted into copped wave and protect formula, calculates current flow copped wave value CCC, the copped wave is protected
Protecting formula is：
CCC=CCC-G1* ((T1-T0)/Δ t)-G2* (T1-Tmax)；
In formula：CCC is current low speed chopper current value；G1 is that temperature rises slope gain coefficient；G2 is temperature difference gain coefficient；
Tmax is that switched reluctance machines work long hours the temperature value upper limit；
If T1 is more than T0, and T1 is more than Tmax, then temperature rises gain and temperature difference gain reduces current flow copped wave value simultaneously；If
T1 is less than T0 and T1 is more than Tmax, then temperature rises gain increase current flow copped wave value, temperature difference gain reduction current flow copped wave value；
If T1 is more than T0 and T1 is less than Tmax, temperature rises gain reduction current flow copped wave value, and temperature difference gain improves current flow copped wave
Value；
Step 9：The limitation of bound is done to current flow copped wave value CCC：Default CCCmax is maximum allowed current copped wave
Value, it is minimum acceptable current copped wave value to preset CCCmin, and the driver control of control chip informing switched reluctance machines switchs magnetic
The operating condition for hindering motor, makes current flow copped wave value CCC when its work between CCCmax and CCCmin.
The control chip is ARM controller.
The temperature sensor R1 be NTC temperature sensors (the NTC temperature sensors are the prior art, Gu not in detail
Narration).
(driver of the switched reluctance machines is the prior art to the driver of the switched reluctance machines, solid not detailed
Narration) pass through serial ports and control chip communication.
The present invention can quickly be adjusted current chopping value, and switched reluctance machines can be allowed to be operated in low speed copped wave
Current peak torque can be provided in section, and lower bridge continued flow tube can be made to be operated within the scope of controllable temperature, prevented due to copped wave
Caused by rapid warm raising and bridge diode under thermal breakdown, to it, temperature rises protection well.
Continued flow tube guard method under a kind of switch reluctance machine drive low speed chopping mode of the present invention, solves
Continued flow tube drastically generates heat and leads to thermal runaway problem when switched reluctance motor controller is operated in low speed chopping mode；The present invention adopts
The method for descending bridge fly-wheel diode operating temperature with measurement, and formula is protected by copped wave, realize a kind of at low cost, reliability
Continued flow tube guard method under strong switch reluctance machine drive low speed chopping mode.
Claims (3)
1. continued flow tube guard method under a kind of switch reluctance machine drive low speed chopping mode, it is characterised in that：Including following
Step：
Step 1：The control system of switched reluctance machines includes：Switched reluctance machines, power inverter, control chip, position inspection
It is equal to survey device, temperature sensor and Hall sensor, switched reluctance machines, position detector, temperature sensor and Hall sensor
Connection control chip；
Power inverter includes upper bridge driving circuit, upper bridge freewheeling circuit, lower bridge driving circuit and lower bridge freewheeling circuit, and upper bridge drives
Dynamic circuit, upper bridge freewheeling circuit and lower bridge driving circuit, lower bridge freewheeling circuit are electric with the motor coil L of switched reluctance machines 1
Connection, upper bridge circuit are made of upper bridge sustained diode 1 and upper bridge driving metal-oxide-semiconductor Q1, and lower bridge freewheeling circuit is by lower bridge afterflow two
Pole pipe D2 and lower bridge driving metal-oxide-semiconductor D2 compositions；Hall sensor is used to acquire the rotating speed of motor；
Step 2：It controls chip and is equipped with AD sample ports, temperature sensor R1 is set on the side of lower bridge freewheeling circuit, temperature passes
The AD sample ports of sensor R1 electrical connection control chips；Temperature sensor R1 is used to measure the temperature of lower bridge sustained diode 2；
Step 3：Main control chip judges it is low whether switched reluctance machines are operated in by the collected rotating speed of Hall sensor institute
Fast copped wave section：It is then to control chip to start timing, executes step 4；It is no, then follow the steps 3；
Step 4：Initial temperature value is set as T0, current temperature value T1；It controls chip and reads the R1 acquisitions of Current Temperatures sensor
Temperature value, and assign the temperature value to T0；
Step 5：Judge to control whether chip timing reaches 5ms：It is to then follow the steps 6；It is no, then follow the steps 5；
Step 6：Control chip reads the temperature value of Current Temperatures sensor R1 acquisitions again, and assigns the temperature value to T1；
Step 7：Calculate temperature difference the Δ t, Δ t=T1-T0 of temperature value twice；
Step 8:T1, T0 and Δ t are substituted into copped wave and protect formula, calculates current flow copped wave value CCC, the copped wave protection is calculated
Formula is：
CCC=CCC-G1* ((T1-T0)/Δ t)-G2* (T1-Tmax)；
In formula：CCC is current low speed chopper current value；G1 is that temperature rises slope gain coefficient；G2 is temperature difference gain coefficient；Tmax is
Switched reluctance machines work long hours the temperature value upper limit；
If T1 is more than T0, and T1 is more than Tmax, then temperature rises gain and temperature difference gain reduces current flow copped wave value simultaneously；If T1 is small
In T0 and T1 is more than Tmax, then temperature liter gain increases current flow copped wave value, temperature difference gain reduction current flow copped wave value；If T1
More than T0 and T1 is less than Tmax, then temperature liter gain reduction current flow copped wave value, temperature difference gain improves current flow copped wave value；
Step 9：The limitation of bound is done to current flow copped wave value CCC：Default CCCmax is maximum allowed current copped wave value, in advance
If CCCmin is minimum acceptable current copped wave value, the driver control switched reluctance machines of chip informing switched reluctance machines are controlled
Operating condition, make current flow copped wave value CCC when its work between CCCmax and CCCmin.
2. continued flow tube guard method under a kind of switch reluctance machine drive low speed chopping mode as described in claim 1,
It is characterized in that：The control chip is ARM controller.
3. continued flow tube guard method under a kind of switch reluctance machine drive low speed chopping mode as described in claim 1,
It is characterized in that：The temperature sensor R1 is NTC temperature sensors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710360957.0A CN108400573A (en) | 2017-05-22 | 2017-05-22 | Continued flow tube guard method under a kind of switch reluctance machine drive low speed chopping mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710360957.0A CN108400573A (en) | 2017-05-22 | 2017-05-22 | Continued flow tube guard method under a kind of switch reluctance machine drive low speed chopping mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108400573A true CN108400573A (en) | 2018-08-14 |
Family
ID=63094351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710360957.0A Pending CN108400573A (en) | 2017-05-22 | 2017-05-22 | Continued flow tube guard method under a kind of switch reluctance machine drive low speed chopping mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108400573A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113466683A (en) * | 2021-06-10 | 2021-10-01 | 深圳拓邦股份有限公司 | Switched reluctance motor, fault detection method thereof and cook machine |
| CN114465548A (en) * | 2021-10-12 | 2022-05-10 | 郑州大学 | Low-cost self-boosting power converter for switched reluctance motor and control strategy thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102045015A (en) * | 2011-01-04 | 2011-05-04 | 东南大学 | Sampling circuit and sampling method for phase winding current of switched reluctance motor |
| CN102291064A (en) * | 2011-08-31 | 2011-12-21 | 东南大学 | Fast wave-chopping circuit and method for switched reluctance motor driving system |
| CN203104348U (en) * | 2012-12-18 | 2013-07-31 | 北京中纺锐力机电有限公司 | Switched reluctance motor control device |
| CN103346712A (en) * | 2013-07-24 | 2013-10-09 | 东南大学 | Method for on-line estimating of temperature of lower follow current tube of switch reluctance machine controller in low-speed current chopping control mode |
-
2017
- 2017-05-22 CN CN201710360957.0A patent/CN108400573A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102045015A (en) * | 2011-01-04 | 2011-05-04 | 东南大学 | Sampling circuit and sampling method for phase winding current of switched reluctance motor |
| CN102291064A (en) * | 2011-08-31 | 2011-12-21 | 东南大学 | Fast wave-chopping circuit and method for switched reluctance motor driving system |
| CN203104348U (en) * | 2012-12-18 | 2013-07-31 | 北京中纺锐力机电有限公司 | Switched reluctance motor control device |
| CN103346712A (en) * | 2013-07-24 | 2013-10-09 | 东南大学 | Method for on-line estimating of temperature of lower follow current tube of switch reluctance machine controller in low-speed current chopping control mode |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113466683A (en) * | 2021-06-10 | 2021-10-01 | 深圳拓邦股份有限公司 | Switched reluctance motor, fault detection method thereof and cook machine |
| CN114465548A (en) * | 2021-10-12 | 2022-05-10 | 郑州大学 | Low-cost self-boosting power converter for switched reluctance motor and control strategy thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105928631B (en) | Method for estimating the temperature of transistor | |
| CN103149407B (en) | Circuit arrangement | |
| CN101461127B (en) | Method for operating and electronically commutated motor, and motor for carrying out a method such as this | |
| CN103633784B (en) | Electric rotating machine with load dump protector | |
| CN101207352B (en) | Control method and control device of power supply soft launch for intermittent power supply by balance beam type pumping unit | |
| TWI492518B (en) | Apparatus of control of a motor and method of a controller thereof | |
| CN101960703B (en) | Power supply arrangement | |
| JP2007089354A (en) | Signal detector of load drive unit | |
| CN106374682B (en) | A kind of hybrid powder motor cooling means and system | |
| CN101796715A (en) | Method for the operation of a single-phase electronically commutated motor on a direct current source, and motor for performing such a method | |
| CN205304653U (en) | Two plane type leads to fan control system based on brushless DC motor | |
| CN203675020U (en) | Hand dryer brushless motor controller without position sensor | |
| CN204810577U (en) | Electromagnetic heating system and current detection and protection controlling means thereof | |
| CN108400573A (en) | Continued flow tube guard method under a kind of switch reluctance machine drive low speed chopping mode | |
| KR20120063152A (en) | Power supply module for hall sensorsless brushless direct current motor | |
| CN104767176B (en) | The monocycle detection and guard method of a kind of brshless DC motor peak point current | |
| CN105553385A (en) | Electric vehicle controller and motor over-temperature protection method thereof | |
| CN201904751U (en) | Brushless fan controller with position sensor | |
| CN106253772A (en) | Motor drive control device and motor drive control method | |
| WO2011031787A1 (en) | Method of operating a motor | |
| CN104375048A (en) | Apparatus and method for detecting short circuit of inverter system | |
| CN102969970A (en) | Motor efficiency tracking driving system and driving method | |
| CN108011559B (en) | Electric tool and control method thereof | |
| JP5270602B2 (en) | Vehicle current limiting device | |
| CN108075701B (en) | Method for improving and controlling efficiency of switched reluctance power generation system without position sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180814 |