CN205319985U - Switched reluctance motor's voltage chopper control device - Google Patents
Switched reluctance motor's voltage chopper control device Download PDFInfo
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- CN205319985U CN205319985U CN201520746488.2U CN201520746488U CN205319985U CN 205319985 U CN205319985 U CN 205319985U CN 201520746488 U CN201520746488 U CN 201520746488U CN 205319985 U CN205319985 U CN 205319985U
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Abstract
The application discloses switched reluctance motor's controlling means, this controlling means are applied to voltage chopper control system. The device at first detects switched reluctance motor and whether is in the single -phase stage of switching on, if then control the driving voltage's of current looks duty cycle with the duty cycle value of proportional integral module output at the single -phase stage of switching on, if be in to overlap the commutation stage and then carry on proportional integral module output duty cycle value after the corresponding adjustment respectively adjusting the driving voltage's of the driving voltage's of current looks duty cycle and next looks duty cycle, the duty cycle that is about to the driving voltage of current looks is turned down, opposite then increase the driving voltage's of next looks duty cycle, phase electric current amplitude when single -phase switching on is overlapped before commutation stage biphase current amplitude sum and the commutation in control promptly is the same basically, so as to reduces the torque ripple when overlapping the commutation by a wide margin, just also can reduce switched reluctance motor's operation noise by a wide margin.
Description
Technical field
The application relates to motor drag technical field, more particularly, it relates to the voltage chopping of a kind of switched reluctance machines controls device.
Background technology
The control method being applied to switched reluctance machines has Current cut control method (CCC), voltage chopping control method (CVC), Angle-domain imaging method (APC) traditionally. Wherein Current cut control method is usually used in low speed control, Angle-domain imaging method is then usually used in High-speed Control, and voltage chopping controlling party rule can be not only used for low speed and can also be used at a high speed, comparing other two kinds of its ranges of application of control method more more extensive. Fig. 1 is the control block diagram of the voltage chopping control method of switched reluctance machines, when switched reluctance machines is in the overlapping commutation stage, because of current conducting mutually and the different phase of next residing respective turn-on cycle mutually, and its identical dutycycle can produce the electric current of different lifting proportional, thus bigger torque pulsation can be produced, and then can cause that switched reluctance machines operationally produces bigger running noises.
Utility model content
In view of this, the application provides the voltage chopping of a kind of switched reluctance machines to control device, for switched reluctance machines is controlled, to reduce the running noises of this switched reluctance machines.
To achieve these goals, it is proposed that scheme as follows:
A kind of control device of switched reluctance machines, the voltage chopping being applied to described switched reluctance machines controls system, including:
Commutation detection module, is used for detecting whether described switched reluctance machines is in single-phase conducting phase, the output single-phase Continuity signal when described switched reluctance machines is in single-phase conducting phase, otherwise exports commutation signal;
First occupancy controller, the dutycycle of the inverter that described voltage chopping controls system is controlled by the dutyfactor value for controlling the proportional integral device output of system according to described single-phase Continuity signal and described voltage chopping;
Second occupancy controller, it is controlled for described dutyfactor value being multiplied by default first proportionality coefficient dutycycle to the driving voltage of described current phase according to described commutation signal, described first proportionality coefficient of presetting is the positive number less than 1, being additionally operable to that described dutyfactor value is multiplied by default second proportionality coefficient dutycycle to the driving voltage of next phase of described current phase be controlled, described second proportionality coefficient of presetting is the positive number more than 1 simultaneously.
Optionally, also including presetting the first proportionality coefficient correcting module, described first proportionality coefficient correcting module of presetting includes:
First judging unit, is used for judging that whether adjacent two commutation point eve single-phase electricity flow valuves differ more than default first current differential; Less than or equal to as described in preset the first current differential, then not to described preset the first proportionality coefficient be modified;
Second judging unit, for described adjacent two commutation point eve single-phase electricity flow valuves difference more than as described in preset the first current differential time, judge that whether the increasing degree of driving electric current of described current phase is less than default first electric current increasing degree, less than or equal to as described in the first electric current increasing degree then export the first revision directive, otherwise export the second revision directive;
First amending unit, for reducing default first correction value according to described first revision directive by described first proportionality coefficient of presetting;
Second amending unit, for reducing default second correction value according to described second revision directive by described first proportionality coefficient of presetting; Described second correction value is more than described first correction value;
Whether 3rd judging unit, be used for the difference judging biphase current sum when commutation overlap turns on and the monophase current before commutation more than default second current differential; Less than or equal to as described in preset the second current differential then stop revise; More than as described in preset the second current differential, then control described second judging unit and continue whether the increasing degree driving electric current of described current phase is judged less than described first electric current increasing degree of presetting.
Optionally, described default first current differential is the 10% of the average running current of described switched reluctance machines;
Described first electric current increasing degree of presetting is the 20% of described average running current;
Described second current differential of presetting is the 10% of described average running current.
Optionally, also including the second proportionality coefficient correcting module, described second proportionality coefficient correcting module of presetting includes:
Whether 4th judging unit, be used for the difference judging adjacent two commutation point eve single-phase electricity flow valuves more than default 3rd current differential; Less than or equal to as described in preset the 3rd current differential, then not to described preset the second proportionality coefficient be modified;
5th judging unit, for when the difference of described adjacent two commutation point eve single-phase electricity flow valuves is more than described default three current differential, judge that whether the increasing degree of driving electric current of next phase of described current phase is less than default second electric current increasing degree, less than or equal to as described in preset the second electric current increasing degree then export the 3rd revision directive, otherwise output the 4th revision directive;
3rd amending unit, for increasing default 3rd correction value according to described 3rd revision directive by described second proportionality coefficient of presetting;
4th amending unit, for increasing default 4th correction value according to described 4th revision directive by described second proportionality coefficient of presetting; Described 4th correction value is more than described 3rd correction value;
Whether 6th judging unit, be used for the difference judging biphase current sum when commutation overlap turns on and the monophase current before commutation more than default 4th current differential; Less than or equal to as described in preset the 4th current differential then stop revise; More than as described in preset the 4th current differential, then control described 5th judging unit and continue to judge whether the increasing degree driving electric current of next phase described presets the second current step less than described.
Optionally, described default 3rd current differential is the 10% of the average running current of described switched reluctance machines;
Described second electric current increasing degree of presetting is the 20% of described average running current;
Described the 4th current differential of presetting is the 10% of described average running current.
From above-mentioned technical scheme it can be seen that this application discloses the control device of a kind of switched reluctance machines, this control device is applied to voltage chopping and controls system. first this device detects whether switched reluctance machines is in single-phase conducting phase, then with the dutyfactor value of proportional integral module output, the dutycycle of the driving voltage of current phase is controlled as being in single-phase conducting phase, as be in the overlapping commutation stage then proportional integral module output duty cycle value is adjusted accordingly after respectively the dutycycle of the dutycycle of the driving voltage of current phase and the driving voltage of next phase is adjusted, turn down by the dutycycle of the driving voltage of current phase, contrary then the dutycycle of the driving voltage of next phase is heightened, phase current magnitude when namely controlling single-phase conducting before overlapping commutation stage biphase current amplitude sum and commutation is essentially identical, it is thus possible to torque pulsation when overlapping commutation is greatly decreased, also the running noises of switched reluctance machines just can be greatly reduced.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the application, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The control block diagram of the voltage chopping control method of the switched reluctance machines that Fig. 1 provides for the application;
The schematic diagram controlling device of a kind of switched reluctance machines that Fig. 2 provides for the embodiment of the present application;
The schematic diagram controlling device of the another kind of switched reluctance machines that Fig. 3 provides for the application;
A kind of schematic diagram presetting the first proportionality coefficient correcting module that Fig. 4 provides for the application;
A kind of schematic diagram presetting the second proportionality coefficient correcting module that Fig. 5 provides for the application.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described embodiment is only some embodiments of the present application, rather than whole embodiments. Based on the embodiment in the application, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of the application protection.
Embodiment one
The schematic diagram controlling device of a kind of switched reluctance machines that Fig. 2 provides for the embodiment of the present application.
As in figure 2 it is shown, the control device of the switched reluctance machines of the present embodiment offer includes commutation detection module the 10, first occupancy controller 20 and the second occupancy controller 30.
Commutation detection module 10 is used for detecting whether this switched reluctance machines is in single-phase conducting phase.
In the voltage chopping control system of switched reluctance machines, this commutation detection module 10 detects the position signalling of rotor by encoder, and by the calculating of this position signalling being obtained the rotor positional information relative to stator. By namely the judgement of this positional information being can determine that, whether switched reluctance machines is in single-phase conducting phase, if being in single-phase conducting phase, then output reflects that this switched reluctance machines is in the single-phase Continuity signal of single-phase conducting phase; Otherwise illustrating that switched reluctance machines enters the overlapping conducting stage, namely current phase simultaneously turns on mutually with next, now only exports commutation signal.
The dutyfactor value that proportional integral device in voltage chopping control system exports then is directly output to inverter according to single-phase Continuity signal by the first occupancy controller 20, makes inverter with current duty cycle value, the dutycycle of the driving voltage of current phase be controlled.
The dutyfactor value that proportional integral device exports then is multiplied by default first proportionality coefficient according to commutation signal by the second occupancy controller 30, then inputs inverter, is controlled with the dutycycle to the driving voltage of current phase; Above-mentioned dutyfactor value is multiplied by default second proportionality coefficient simultaneously, then inputs inverter, be controlled with the dutycycle to the driving voltage of next phase of current phase.
Above-mentioned the first proportionality coefficient of presetting is the positive number less than 1, and presetting the second proportionality coefficient is the positive number more than 1.
From technique scheme it can be seen that present embodiments provide the control device of a kind of switched reluctance machines, this control device is applied to voltage chopping and controls system. first this device detects whether switched reluctance machines is in single-phase conducting phase, then with the dutyfactor value of proportional integral module output, the dutycycle of the driving voltage of current phase is controlled as being in single-phase conducting phase, as be in the overlapping commutation stage then proportional integral module output duty cycle value is adjusted accordingly after respectively the dutycycle of the dutycycle of the driving voltage of current phase and the driving voltage of next phase is adjusted, turn down by the dutycycle of the driving voltage of current phase, contrary then the dutycycle of the driving voltage of next phase is heightened, phase current magnitude when namely controlling single-phase conducting before overlapping commutation stage biphase current amplitude sum and commutation is essentially identical, it is thus possible to torque pulsation when overlapping commutation is greatly decreased, also the running noises of switched reluctance machines just can be greatly reduced.
Preset the first proportionality coefficient in the present embodiment and preset the variable that the second proportionality coefficient is the driving electric current of an adaptation switched reluctance machines, this variable can be demarcated in advance, and be modified in motor operation course, therefore this control device also includes presetting the first proportionality coefficient correcting module 40 for what default first proportionality coefficient was modified and presetting the second proportionality coefficient correcting module 50 for what default second proportionality coefficient was modified, as shown in Figure 3.
Preset the first proportionality coefficient correcting module as shown in Figure 4, including the first judging unit the 41, second judging unit the 42, the 3rd judging unit the 43, first amending unit 44 and the second amending unit 45.
Whether first judging unit 41 is used for the difference judging current value more than default first current differential.
Namely the first judging unit 41 is for being recorded respectively the single-phase electric current before adjacent two commutation point and compare, when this single-phase reality be current conducting mutually and next operation phase individually turn on phase, i.e. current next phase turning on phase, then electric current time by this biphase independent conducting asks poor, as the difference of so-called current value, and compare with default first current differential. The 10% of the average running current of this default first current differential preferably this switched reluctance machines.
If the difference of adjacent two commutation point eve single-phase electricity flow valuves is less than default first current differential, then terminates to revise, namely default first proportionality coefficient is not modified.
When second judging unit 42 presets the first current differential for the difference such as described adjacent two commutation point eve single-phase electricity flow valuves more than this, judge that whether the increasing degree of driving electric current of described current phase is less than default first electric current increasing degree, less than or equal to as described in the first electric current increasing degree then export the first revision directive, otherwise export the second revision directive.
The 20% of the average running current of this default first electric current increasing degree preferably this switched reluctance machines.
First amending unit 44 reduces default first correction value for presetting the first proportionality coefficient according to the first revision directive.
Second amending unit 45 reduces default second correction value for presetting the first proportionality coefficient according to the second revision directive.
When choosing default first correction value noted earlier and presetting the second correction value, it is necessary to considering that precision controlling requires and real system parameter, the more little then system accuracy of choosing is more high, but can increase the amount of calculation of system accordingly, cause system unstable. Further, the second correction value is preset more than default first correction value.
3rd judging unit 43 is for after default first proportionality coefficient is modified by the first amending unit 44 or the second amending unit 45, current conducting during determining whether overlapping commutation is mutually and the two-phase-region casting electric current of next phase and whether less than default second current differential, the 10% of this default second preferred switched reluctance machines of current differential average running current under current load situation.
If biphase current and less than default second current differential, terminating this and revise, if being also greater than presetting the second current differential, controlling the second judging unit 42 continues whether the increasing degree driving electric current of current phase is judged less than described first electric current increasing degree of presetting.
Preset the second proportionality coefficient correcting module and include the 4th judging unit the 51, the 5th judging unit the 52, the 6th judging unit the 53, the 3rd amending unit 54 and the 4th amending unit 55 as shown in Figure 5.
Whether 4th judging unit 51 is used for the difference judging current value more than default 3rd current differential.
Namely the 4th judging unit 51 is for being recorded respectively the single-phase electric current before adjacent two commutation point and compare, when this single-phase reality be current conducting mutually and next operation phase individually turn on phase, i.e. current next phase turning on phase, then electric current time by this biphase independent conducting asks poor, as the difference of so-called current value, and compare with default 3rd current differential. The 10% of the average running current of this default 3rd current differential preferably this switched reluctance machines.
If the difference of adjacent two commutation point eve single-phase electricity flow valuves is less than default 3rd current differential, then terminates to revise, namely default 3rd proportionality coefficient is not modified.
5th judging unit 52 is for when the difference of adjacent two commutation point eve single-phase electricity flow valuves presets three current differential more than this, judge that whether the increasing degree of driving electric current of next phase of current phase is less than default second electric current increasing degree, less than or equal to as described in preset the second electric current increasing degree then export the 3rd revision directive, otherwise output the 4th revision directive.
The 20% of the average running current of this default second electric current increasing degree preferably this switched reluctance machines.
3rd amending unit 54 increases default 3rd correction value for presetting the second proportionality coefficient according to the 3rd revision directive.
4th amending unit 55 increases default 4th correction value for presetting the second proportionality coefficient according to the 4th revision directive.
When choosing default 3rd correction value noted earlier and presetting four correction values, it is necessary to considering that precision controlling requires and real system parameter, the more little then system accuracy of choosing is more high, but can increase the amount of calculation of system accordingly, cause system unstable. Further, the 4th correction value is preset more than default 3rd correction value.
6th judging unit 53 is for after default second proportionality coefficient is modified by the 3rd amending unit 54 or the 4th amending unit 55, current conducting during determining whether overlapping commutation is mutually and the two-phase-region casting electric current of next phase and whether less than default 4th current differential, the 10% of this default 4th preferred switched reluctance machines of current differential average running current under current load situation.
If biphase current and less than default 4th current differential, terminating this and revise, if being also greater than presetting the second current differential, controlling the 5th judging unit 52 continues whether the increasing degree driving electric current of current phase is judged less than described first electric current increasing degree of presetting.
In this specification, each embodiment adopts the mode gone forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually referring to. Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the application. The multiple amendment of these embodiments be will be apparent from for those skilled in the art, and generic principles defined herein when without departing from spirit herein or scope, can realize in other embodiments. Therefore, the application is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (5)
1. a control device for switched reluctance machines, the voltage chopping being applied to described switched reluctance machines controls system, it is characterised in that including:
Commutation detection module, is used for detecting whether described switched reluctance machines is in single-phase conducting phase, the output single-phase Continuity signal when described switched reluctance machines is in single-phase conducting phase, otherwise exports commutation signal;
First occupancy controller, the dutycycle of the inverter that described voltage chopping controls system is controlled by the dutyfactor value for controlling the proportional integral device output of system according to described single-phase Continuity signal and described voltage chopping;
Second occupancy controller, it is controlled for described dutyfactor value being multiplied by default first proportionality coefficient dutycycle to the driving voltage of described current phase according to described commutation signal, described first proportionality coefficient of presetting is the positive number less than 1, being additionally operable to that described dutyfactor value is multiplied by default second proportionality coefficient dutycycle to the driving voltage of next phase of described current phase be controlled, described second proportionality coefficient of presetting is the positive number more than 1 simultaneously.
2. control device as claimed in claim 1, it is characterised in that also including presetting the first proportionality coefficient correcting module, described first proportionality coefficient correcting module of presetting includes:
First judging unit, is used for judging that whether adjacent two commutation point eve single-phase electricity flow valuves differ more than default first current differential; Less than or equal to as described in preset the first current differential, then not to described preset the first proportionality coefficient be modified;
Second judging unit, for described adjacent two commutation point eve single-phase electricity flow valuves difference more than as described in preset the first current differential time, judge that whether the increasing degree of driving electric current of described current phase is less than default first electric current increasing degree, less than or equal to as described in the first electric current increasing degree then export the first revision directive, otherwise export the second revision directive;
First amending unit, for reducing default first correction value according to described first revision directive by described first proportionality coefficient of presetting;
Second amending unit, for reducing default second correction value according to described second revision directive by described first proportionality coefficient of presetting; Described second correction value is more than described first correction value;
Whether 3rd judging unit, be used for the difference judging biphase current sum when commutation overlap turns on and the monophase current before commutation more than default second current differential;Less than or equal to as described in preset the second current differential then stop revise; More than as described in preset the second current differential, then control described second judging unit and continue whether the increasing degree driving electric current of described current phase is judged less than described first electric current increasing degree of presetting.
3. control device as claimed in claim 2, it is characterised in that described default first current differential is the 10% of the average running current of described switched reluctance machines;
Described first electric current increasing degree of presetting is the 20% of described average running current;
Described second current differential of presetting is the 10% of described average running current.
4. control device as claimed in claim 1, it is characterised in that also including the second proportionality coefficient correcting module, described second proportionality coefficient correcting module of presetting includes:
Whether 4th judging unit, be used for the difference judging adjacent two commutation point eve single-phase electricity flow valuves more than default 3rd current differential; Less than or equal to as described in preset the 3rd current differential, then not to described preset the second proportionality coefficient be modified;
5th judging unit, for when the difference of described adjacent two commutation point eve single-phase electricity flow valuves is more than described default three current differential, judge that whether the increasing degree of driving electric current of next phase of described current phase is less than default second electric current increasing degree, less than or equal to as described in preset the second electric current increasing degree then export the 3rd revision directive, otherwise output the 4th revision directive;
3rd amending unit, for increasing default 3rd correction value according to described 3rd revision directive by described second proportionality coefficient of presetting;
4th amending unit, for increasing default 4th correction value according to described 4th revision directive by described second proportionality coefficient of presetting; Described 4th correction value is more than described 3rd correction value;
Whether 6th judging unit, be used for the difference judging biphase current sum when commutation overlap turns on and the monophase current before commutation more than default 4th current differential; Less than or equal to as described in preset the 4th current differential then stop revise; More than as described in preset the 4th current differential, then control described 5th judging unit and continue to judge whether the increasing degree driving electric current of next phase described presets the second current step less than described.
5. control device as claimed in claim 4, it is characterised in that described default 3rd current differential is the 10% of the average running current of described switched reluctance machines;
Described second electric current increasing degree of presetting is the 20% of described average running current;
Described the 4th current differential of presetting is the 10% of described average running current.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520746488.2U CN205319985U (en) | 2015-09-24 | 2015-09-24 | Switched reluctance motor's voltage chopper control device |
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| CN201520746488.2U CN205319985U (en) | 2015-09-24 | 2015-09-24 | Switched reluctance motor's voltage chopper control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106559016A (en) * | 2015-09-24 | 2017-04-05 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of voltage chopping control method of switched reluctance machines and device |
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2015
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106559016A (en) * | 2015-09-24 | 2017-04-05 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of voltage chopping control method of switched reluctance machines and device |
| CN106559016B (en) * | 2015-09-24 | 2019-03-12 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of the voltage chopping control method and device of switched reluctance machines |
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