CN107147339A - A kind of four phase electric excitation biconvex electrode electric machine loss of excitation failure tolerant electricity-generating methods - Google Patents
A kind of four phase electric excitation biconvex electrode electric machine loss of excitation failure tolerant electricity-generating methods Download PDFInfo
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- CN107147339A CN107147339A CN201710362180.1A CN201710362180A CN107147339A CN 107147339 A CN107147339 A CN 107147339A CN 201710362180 A CN201710362180 A CN 201710362180A CN 107147339 A CN107147339 A CN 107147339A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
- H02P9/26—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices
- H02P9/30—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices using semiconductor devices
- H02P9/305—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices using semiconductor devices controlling voltage
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Abstract
The invention discloses a kind of four phases electric excitation biconvex electrode electric machine loss of excitation failure tolerant electricity-generating method, by detect exciting current size judge system excitation part whether failure, if fault-free, then four phase electric excitation biconvex electrode electric machines carry out uncontrollable rectifier generating by full-bridge converter to load, and output voltage closed-loop control is realized by adjusting exciting current；If breaking down, then enable the 5th bridge arm, set an excitation angle and forward and reverse exciting current is each led into four phase windings by four phase five bridge-arm converters, the fault-tolerant generating of loss of excitation failure is realized using magnetic resistance potential, the closed-loop control of feasible system generating output voltage is adjusted by adjusting excitation angle.The present invention only increases a redundancy bridge arm on conventional full bridge converter, realize the generating of electric excitation biconvex electrode electric machine loss of excitation failure tolerant, control simple and flexible effectively, improve the reliability of electric excitation biconvex electrode electric machine, had broad application prospects in aviation starting-generating, field of wind power generation.
Description
Technical field
Hold the present invention relates to motor control technology field, more particularly to a kind of four phases electric excitation biconvex electrode electric machine loss of excitation failure
Mistake method for electrically.
Background technology
As a kind of new brshless DC motor, electric excitation biconvex electrode electric machine have it is simple and reliable for structure, control flexibly, hold
Wrong performance is good, advantages suitable for bad working environments, is had broad application prospects in aviation, field of wind power generation.Multiphase electricity
Excitation biconvex electrode electric machine can reduce torque pulsation, reduce generating output voltage ripple, improve System Fault Tolerance performance.It is used as generating
When machine is run, electric excitation biconvex electrode electric machine is powered to the load through uncontrollable rectifier, and output voltage is realized by adjusting exciting current
Regulation, excitation part is system vulnerable component, and fault-tolerant electricity-generating method when it breaks down urgently is studied.
At present, still it is in the starting stage about the faults-tolerant control strategy study of electric excitation biconvex electrode electric machine loss of excitation failure.History
Stand disclosed in big grade " the fault-tolerant electricity generation system of electric excitation biconvex electrode electric machine excitation fault and its control method "（China, publication date：
On April 29th, 2015, publication number：104579067A）A kind of electric excitation biconvex electrode based on three-phase four-arm is disclosed in patent
Motor loss of excitation failure tolerant electricity-generating method, it as a controlling cycle, passes to two electrical angle cycles into three-phase windings
Positive and negative reverse exciting current realizes the generating under loss of excitation failure.But it directly can not realize loss of excitation failure according to rotor position angle
Excitation function, it is actual to implement complicated.
The loss of excitation event of electric excitation biconvex electrode electric machine can be realized by increasing by a phase redundancy bridge arm on the basis of full-bridge converter
Hinder generating function, but in four phase electric excitation biconvex electrode electric machines, per phase armature winding self-induction in any sector with rotor-position
In change, patent disclosed above the winding of self-induction constant interval is powered to the load, this electricity driven in the bridge arm of four phase five
The short circuit of the 5th bridge arm can be caused in excitation biconvex electrode electric machine, it is impossible to realize that the loss of excitation failure tolerant of system generates electricity.
The content of the invention
The technical problems to be solved by the invention are that the defect being directed to involved by background technology is mutually electric there is provided one kind four
Excitation biconvex electrode electric machine loss of excitation failure tolerant electricity-generating method.
The present invention uses following technical scheme to solve above-mentioned technical problem：
A kind of four phase electric excitation biconvex electrode electric machine loss of excitation failure tolerant electricity-generating methods, the four phases electric excitation biconvex electrode electric machine is star-like
Connection, four phase windings are respectively A phase windings, B phase windings, C phase windings, D phase windings, are driven using four phase five bridge-arm converters；
The four phases five bridge-arm converter includes four phase full-bridge converters and the 5th bridge arm；
The four phases full-bridge converter includes switch transistor T 1 to T8, diode D1 to D8；5th bridge arm includes switch transistor T 9
To T10, diode D9 to D10；
The switch transistor T 1 to T10 colelctor electrode is connected with diode D1 to D10 negative electrode respectively, emitter stage respectively and diode
D1 to D10 anode is connected；
Anode, the diode D2 negative electrode of A phase windings respectively with diode D1 are connected；
Anode, the diode D4 negative electrode of B phase windings respectively with diode D3 are connected；
Anode, the diode D6 negative electrode of C phase windings respectively with diode D5 are connected；
Anode, the diode D8 negative electrode of D phase windings respectively with diode D7 are connected；
The neutral point of four phase electric excitation biconvex electrode electric machines is by switching anodes of the S respectively with diode D9, diode D10 negative electrode
It is connected；
Negative electrode, diode D5 negative electrode, diode D7 negative electrode, the diode D9 of diode D1 negative electrode respectively with diode D3
Negative electrode, external dc bus positive pole be connected；
Anode, diode D6 anode, diode D8 anode, the diode of diode D2 anode respectively with diode D4
D10 anode, the negative pole of external dc bus are connected；
The loss of excitation failure tolerant electricity-generating method comprises the following steps：
Step 1）, judge four phase electric excitation biconvex electrode electric machines excitation part whether failure；
Step 2）If the excitation part fault-free of four phase electric excitation biconvex electrode electric machines is off switch S, four around
Group A, B, C, D is generated electricity by the anti-and diode uncontrollable rectifier of four phase full-bridge converters to load：
If the rotor position angle of four phase electric excitation biconvex electrode electric machines passes through two poles in 0 ° ~ 90 ° intervals, four phase winding A, B, C, D
Pipe D1, D7, D4, D6 generate electricity to load；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines passes through two in 90 ° ~ 180 ° intervals, four phase winding A, B, C, D
Pole pipe D1, D3, D6, D8 generate electricity to load；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines passes through two in 180 ° ~ 270 ° intervals, four phase winding A, B, C, D
Pole pipe D3, D5, D2, D8 generate electricity to load；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines passes through two in 270 ° ~ 360 ° intervals, four phase winding A, B, C, D
Pole pipe D5, D7, D2, D4 generate electricity to load；
Step 3）If the excitation partial fault of four phase electric excitation biconvex electrode electric machines, closure switch S enables the 5th bridge arm, in system
The positive generating of A, C two-phase, the loss of excitation failure tolerant generator operation of B, D two-phase reverse power generation are carried out under loss of excitation failure：
If the rotor position angle of four phase electric excitation biconvex electrode electric machines is in 0 ° ~ (90- α) ° interval, controlling switch pipe T1 to T10
It is turned off, B phase windings are by diode D3, D10 reverse power generation, and α is default excitation angle value；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines opens switch transistor T 5 to C phases in (90- α) ° ~ 90 ° of intervals
Winding carries out positive excitation, and controlling switch pipe T1 is closed to T4, T6 to T10, and B phase windings are reversely sent out by diode D3, D10
Electricity；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines is in 90 ° ~ (180- α) ° interval, controlling switch pipe T1 is extremely
T10 is turned off, and C phase windings are generated electricity by diode D6, D9 forward direction；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines opens switch transistor T 8 to D in (180- α) ° ~ 180 ° of intervals
Phase winding carries out reverse excitation, and controlling switch pipe T1 is closed to T7, T9 to T10, and C phase windings are positive by diode D6, D9
Generate electricity；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines is in 180 ° ~ (270- α) ° interval, controlling switch pipe T1 is extremely
T10 is turned off, and D phase windings pass through diode D7, D10 reverse power generation；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines opens switch transistor T 1 to A in (270- α) ° ~ 270 ° of intervals
Phase winding carries out positive excitation, and controlling switch pipe T2 to T10 is closed, and D phase windings pass through diode D7, D10 reverse power generation；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines is in 270 ° ~ (360- α) ° interval, controlling switch pipe T1 is extremely
T10 is turned off, and A phase windings are generated electricity by diode D2, D9 forward direction；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines is in (360- α) ° ~ 360 ° of intervals, open 4 pairs of switch transistor T
B phase windings carry out reverse excitation, and controlling switch pipe T1 is closed to T3, T5 to T10, and A phase windings are positive by diode D2, D9
Generate electricity.
It is used as a kind of further side of optimization of four phases electric excitation biconvex electrode electric machine loss of excitation failure tolerant electricity-generating method of the present invention
Case, the step 2）In by adjust four phase electric excitation biconvex electrode electric machines exciting current realize to four phase electric excitation biconvex electrodes electricity
The closed-loop control of machine generating voltage, if the generating voltage of four phase electric excitation biconvex electrode electric machines is less than given voltage, increases four phases
The exciting current of electric excitation biconvex electrode electric machine；If the generating voltage of four phase electric excitation biconvex electrode electric machines is more than given voltage, subtract
The exciting current of small four phases electric excitation biconvex electrode electric machine.
It is used as a kind of further side of optimization of four phases electric excitation biconvex electrode electric machine loss of excitation failure tolerant electricity-generating method of the present invention
Case, the step 3）In by adjust excitation angle α carry out four phase electric excitation biconvex electrode electric machine generating voltages closed loop adjust, if four
The generating voltage of phase electric excitation biconvex electrode electric machine is less than given voltage, increase excitation angle α；If four phase electric excitation biconvex electrode electric machines
Generating voltage is more than given voltage, then reduces excitation angle α.
The present invention uses above technical scheme compared with prior art, with following technique effect：
1. using four phase five bridge arm driving electric excitation biconvex electrode electric machine, when can realize normal condition and excitation fault simultaneously
Four phase electric excitation biconvex electrode electric machines generate electricity, and further increase the reliability of electric excitation biconvex electrode electric machine；
2. the regulation of output voltage, excitation can be achieved by adjusting exciting current for electric excitation biconvex electrode electric machine under normal circumstances
By adjusting excitation angle just adjustable output voltage and load current, Generation Control simple and flexible during failure.
Brief description of the drawings
Fig. 1 is the four phase five bridge-arm converters driving topology for the four phase electric excitation biconvex electrode electric machines that the present invention is provided；
Fig. 2 is the phase self-induction curve of four phase electric excitation biconvex electrode electric machine four；
Fig. 3 is four phase electric excitation biconvex electrode electric machine loss of excitation failure tolerant generation current schematic diagrames.
Embodiment
Technical scheme is described in further detail below in conjunction with the accompanying drawings：
The invention discloses a kind of four phases electric excitation biconvex electrode electric machine loss of excitation failure tolerant electricity-generating method, the four phases electrical excitation is double
The star-like connection of salient-pole machine, four phase windings are respectively A phase windings, B phase windings, C phase windings, D phase windings, using the bridge arm of four phase five
Converter drives；
The four phases five bridge-arm converter includes four phase full-bridge converters and the 5th bridge arm；
The four phases full-bridge converter includes switch transistor T 1 to T8, diode D1 to D8；5th bridge arm includes switch transistor T 9
To T10, diode D9 to D10；
The switch transistor T 1 to T10 colelctor electrode is connected with diode D1 to D10 negative electrode respectively, emitter stage respectively and diode
D1 to D10 anode is connected；
Anode, the diode D2 negative electrode of A phase windings respectively with diode D1 are connected；
Anode, the diode D4 negative electrode of B phase windings respectively with diode D3 are connected；
Anode, the diode D6 negative electrode of C phase windings respectively with diode D5 are connected；
Anode, the diode D8 negative electrode of D phase windings respectively with diode D7 are connected；
The neutral point of four phase electric excitation biconvex electrode electric machines is by switching anodes of the S respectively with diode D9, diode D10 negative electrode
It is connected；
Negative electrode, diode D5 negative electrode, diode D7 negative electrode, the diode D9 of diode D1 negative electrode respectively with diode D3
Negative electrode, external dc bus positive pole be connected；
Anode, diode D6 anode, diode D8 anode, the diode of diode D2 anode respectively with diode D4
D10 anode, the negative pole of external dc bus are connected；
The loss of excitation failure tolerant electricity-generating method comprises the following steps：
Step 1）, judge four phase electric excitation biconvex electrode electric machines excitation part whether failure；
This can be by setting exciting current sensor, according to the sensing number of exciting current sensor in the Exciting Windings for Transverse Differential Protection of motor
According to judging；
Step 2）If the excitation part fault-free of four phase electric excitation biconvex electrode electric machines is off switch S, four around
Group A, B, C, D is generated electricity by the anti-and diode uncontrollable rectifier of four phase full-bridge converters to load：
If the rotor position angle of four phase electric excitation biconvex electrode electric machines passes through two poles in 0 ° ~ 90 ° intervals, four phase winding A, B, C, D
Pipe D1, D7, D4, D6 generate electricity to load；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines passes through two in 90 ° ~ 180 ° intervals, four phase winding A, B, C, D
Pole pipe D1, D3, D6, D8 generate electricity to load；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines passes through two in 180 ° ~ 270 ° intervals, four phase winding A, B, C, D
Pole pipe D3, D5, D2, D8 generate electricity to load；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines passes through two in 270 ° ~ 360 ° intervals, four phase winding A, B, C, D
Pole pipe D5, D7, D2, D4 generate electricity to load；
Step 3）If the excitation partial fault of four phase electric excitation biconvex electrode electric machines, closure switch S enables the 5th bridge arm, in system
The positive generating of A, C two-phase, the loss of excitation failure tolerant generator operation of B, D two-phase reverse power generation are carried out under loss of excitation failure：
If the rotor position angle of four phase electric excitation biconvex electrode electric machines is in 0 ° ~ (90- α) ° interval, controlling switch pipe T1 to T10
It is turned off, B phase windings are by diode D3, D10 reverse power generation, and α is default excitation angle value；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines opens switch transistor T 5 to C phases in (90- α) ° ~ 90 ° of intervals
Winding carries out positive excitation, and controlling switch pipe T1 is closed to T4, T6 to T10, and B phase windings are reversely sent out by diode D3, D10
Electricity；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines is in 90 ° ~ (180- α) ° interval, controlling switch pipe T1 is extremely
T10 is turned off, and C phase windings are generated electricity by diode D6, D9 forward direction；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines opens switch transistor T 8 to D in (180- α) ° ~ 180 ° of intervals
Phase winding carries out reverse excitation, and controlling switch pipe T1 is closed to T7, T9 to T10, and C phase windings are positive by diode D6, D9
Generate electricity；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines is in 180 ° ~ (270- α) ° interval, controlling switch pipe T1 is extremely
T10 is turned off, and D phase windings pass through diode D7, D10 reverse power generation；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines opens switch transistor T 1 to A in (270- α) ° ~ 270 ° of intervals
Phase winding carries out positive excitation, and controlling switch pipe T2 to T10 is closed, and D phase windings pass through diode D7, D10 reverse power generation；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines is in 270 ° ~ (360- α) ° interval, controlling switch pipe T1 is extremely
T10 is turned off, and A phase windings are generated electricity by diode D2, D9 forward direction；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines is in (360- α) ° ~ 360 ° of intervals, open 4 pairs of switch transistor T
B phase windings carry out reverse excitation, and controlling switch pipe T1 is closed to T3, T5 to T10, and A phase windings are positive by diode D2, D9
Generate electricity.
The four phase five bridge-arm converters driving topology that four phase electric excitation biconvex electrode electric machines are used is as shown in Figure 1.
Fig. 2 is the phase winding self-induction of four phase electric excitation biconvex electrode electric machine four with rotor-position change curve, it can be seen that four
Phase armature winding self-induction changes with rotor-position at an arbitrary position.
When Fig. 3 is four phase electric excitation biconvex electrode electric machine loss of excitation failure of four phases five bridge-arm converter driving proposed by the present invention
Fault-tolerant generation current schematic diagram.
Step 2）In by adjust four phase electric excitation biconvex electrode electric machines exciting current realize to four phase electric excitation biconvex electrodes
The closed-loop control of electric power generation voltage, if the generating voltage of four phase electric excitation biconvex electrode electric machines is less than given voltage, increases four
The exciting current of phase electric excitation biconvex electrode electric machine；If the generating voltage of four phase electric excitation biconvex electrode electric machines is more than given voltage,
Reduce the exciting current of four phase electric excitation biconvex electrode electric machines.
Step 3）In by adjust excitation angle α carry out four phase electric excitation biconvex electrode electric machine generating voltages closed loop adjust, if
The generating voltage of four phase electric excitation biconvex electrode electric machines is less than given voltage, increase excitation angle α；If four phase electric excitation biconvex electrode electric machines
Generating voltage be more than given voltage, then reduce excitation angle α.
It is that the fault-tolerant generating of four phase electric excitation biconvex electrode electric machine loss of excitation failures can be achieved by above-mentioned steps, further improves
The reliability of electric excitation biconvex electrode electric machine.
Those skilled in the art of the present technique are it is understood that unless otherwise defined, all terms used herein（Including skill
Art term and scientific terminology）With the general understanding identical meaning with the those of ordinary skill in art of the present invention.Also
It should be understood that those terms defined in such as general dictionary should be understood that with the context of prior art
The consistent meaning of meaning, and unless defined as here, will not be explained with idealization or excessively formal implication.
Above-described embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not limited to this hair
Bright, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc. should be included in the present invention
Protection domain within.
Claims (3)
1. a kind of four phases electric excitation biconvex electrode electric machine loss of excitation failure tolerant electricity-generating method, it is characterised in that the four phases electrical excitation
The star-like connection of double salient-pole electric machine, four phase windings are respectively A phase windings, B phase windings, C phase windings, D phase windings, using the bridge of four phase five
Arm converter drives；
The four phases five bridge-arm converter includes four phase full-bridge converters and the 5th bridge arm；
The four phases full-bridge converter includes switch transistor T 1 to T8, diode D1 to D8；5th bridge arm includes switch transistor T 9
To T10, diode D9 to D10；
The switch transistor T 1 to T10 colelctor electrode is connected with diode D1 to D10 negative electrode respectively, emitter stage respectively and diode
D1 to D10 anode is connected；
Anode, the diode D2 negative electrode of A phase windings respectively with diode D1 are connected；
Anode, the diode D4 negative electrode of B phase windings respectively with diode D3 are connected；
Anode, the diode D6 negative electrode of C phase windings respectively with diode D5 are connected；
Anode, the diode D8 negative electrode of D phase windings respectively with diode D7 are connected；
The neutral point of four phase electric excitation biconvex electrode electric machines is by switching anodes of the S respectively with diode D9, diode D10 negative electrode
It is connected；
Negative electrode, diode D5 negative electrode, diode D7 negative electrode, the diode D9 of diode D1 negative electrode respectively with diode D3
Negative electrode, external dc bus positive pole be connected；
Anode, diode D6 anode, diode D8 anode, the diode of diode D2 anode respectively with diode D4
D10 anode, the negative pole of external dc bus are connected；
The loss of excitation failure tolerant electricity-generating method comprises the following steps：
Step 1）, judge four phase electric excitation biconvex electrode electric machines excitation part whether failure；
Step 2）If the excitation part fault-free of four phase electric excitation biconvex electrode electric machines is off switch S, four around
Group A, B, C, D is generated electricity by the anti-and diode uncontrollable rectifier of four phase full-bridge converters to load：
If the rotor position angle of four phase electric excitation biconvex electrode electric machines passes through two poles in 0 ° ~ 90 ° intervals, four phase winding A, B, C, D
Pipe D1, D7, D4, D6 generate electricity to load；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines passes through two in 90 ° ~ 180 ° intervals, four phase winding A, B, C, D
Pole pipe D1, D3, D6, D8 generate electricity to load；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines passes through two in 180 ° ~ 270 ° intervals, four phase winding A, B, C, D
Pole pipe D3, D5, D2, D8 generate electricity to load；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines passes through two in 270 ° ~ 360 ° intervals, four phase winding A, B, C, D
Pole pipe D5, D7, D2, D4 generate electricity to load；
Step 3）If the excitation partial fault of four phase electric excitation biconvex electrode electric machines, closure switch S enables the 5th bridge arm, in system
The positive generating of A, C two-phase, the loss of excitation failure tolerant generator operation of B, D two-phase reverse power generation are carried out under loss of excitation failure：
If the rotor position angle of four phase electric excitation biconvex electrode electric machines is in 0 ° ~ (90- α) ° interval, controlling switch pipe T1 to T10
It is turned off, B phase windings are by diode D3, D10 reverse power generation, and α is default excitation angle value；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines opens switch transistor T 5 to C phases in (90- α) ° ~ 90 ° of intervals
Winding carries out positive excitation, and controlling switch pipe T1 is closed to T4, T6 to T10, and B phase windings are reversely sent out by diode D3, D10
Electricity；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines is in 90 ° ~ (180- α) ° interval, controlling switch pipe T1 is extremely
T10 is turned off, and C phase windings are generated electricity by diode D6, D9 forward direction；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines opens switch transistor T 8 to D in (180- α) ° ~ 180 ° of intervals
Phase winding carries out reverse excitation, and controlling switch pipe T1 is closed to T7, T9 to T10, and C phase windings are positive by diode D6, D9
Generate electricity；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines is in 180 ° ~ (270- α) ° interval, controlling switch pipe T1 is extremely
T10 is turned off, and D phase windings pass through diode D7, D10 reverse power generation；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines opens switch transistor T 1 to A in (270- α) ° ~ 270 ° of intervals
Phase winding carries out positive excitation, and controlling switch pipe T2 to T10 is closed, and D phase windings pass through diode D7, D10 reverse power generation；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines is in 270 ° ~ (360- α) ° interval, controlling switch pipe T1 is extremely
T10 is turned off, and A phase windings are generated electricity by diode D2, D9 forward direction；
If the rotor position angle of four phase electric excitation biconvex electrode electric machines is in (360- α) ° ~ 360 ° of intervals, open 4 pairs of switch transistor T
B phase windings carry out reverse excitation, and controlling switch pipe T1 is closed to T3, T5 to T10, and A phase windings are positive by diode D2, D9
Generate electricity.
2. four phases electric excitation biconvex electrode electric machine loss of excitation failure tolerant electricity-generating method according to claim 1, it is characterised in that
The step 2）In by adjust four phase electric excitation biconvex electrode electric machines exciting current realize to four phase electric excitation biconvex electrode electric machines
The closed-loop control of generating voltage, if the generating voltage of four phase electric excitation biconvex electrode electric machines is less than given voltage, increase four is mutually electric
The exciting current of excitation biconvex electrode electric machine；If the generating voltage of four phase electric excitation biconvex electrode electric machines is more than given voltage, reduce
The exciting current of four phase electric excitation biconvex electrode electric machines.
3. four phases electric excitation biconvex electrode electric machine loss of excitation failure tolerant electricity-generating method according to claim 1, it is characterised in that
The step 3）In by adjust excitation angle α carry out four phase electric excitation biconvex electrode electric machine generating voltages closed loop adjust, if four phases
The generating voltage of electric excitation biconvex electrode electric machine is less than given voltage, increase excitation angle α；If the hair of four phase electric excitation biconvex electrode electric machines
Piezoelectric voltage is more than given voltage, then reduces excitation angle α.
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| CN108649862A (en) * | 2018-06-01 | 2018-10-12 | 南京星锐智能科技有限公司 | The fault-tolerant drive system of four phase electric excitation biconvex electrode electric machine copper loss and current calculation method |
| CN108683377A (en) * | 2018-04-17 | 2018-10-19 | 西安理工大学 | Five leg inverters drive double three-phase machine system Strategy of Direct Torque Control |
| CN109245660A (en) * | 2018-08-13 | 2019-01-18 | 南京航空航天大学 | The fault-tolerant drive system of four phase electric excitation biconvex electrode electric machines of one kind and its Dynamic Model method |
| CN110798121A (en) * | 2019-10-22 | 2020-02-14 | 华中科技大学 | Thyristor-based magnetic field modulation switched reluctance motor driving system and control method |
| CN114123928A (en) * | 2021-11-26 | 2022-03-01 | 南京航空航天大学 | N-phase doubly salient motor optimal current control method based on N +1 bridge arm |
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| CN114123928B (en) * | 2021-11-26 | 2023-11-07 | 南京航空航天大学 | N-phase doubly salient motor optimal current control method based on N+1 bridge arm |
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