CN105429358A - Ship shaft power generation system capable of being started as motor and control method for ship shaft power generation system - Google Patents
Ship shaft power generation system capable of being started as motor and control method for ship shaft power generation system Download PDFInfo
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- CN105429358A CN105429358A CN201510858327.7A CN201510858327A CN105429358A CN 105429358 A CN105429358 A CN 105429358A CN 201510858327 A CN201510858327 A CN 201510858327A CN 105429358 A CN105429358 A CN 105429358A
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Abstract
The invention discloses a ship shaft power generation system capable of being started as a motor and a control method for the ship shaft power generation system, and aims at solving the difficult problem that the ship shaft power generation system cannot be started as the motor. Another shaft of a gear box (2) is connected with a brushless synchronous motor (4); a stator winding (9) of the brushless synchronous motor (4) is electrically connected with a shipborne power station (6) through a bypass switch (5); a motor speed control branch which is formed by connecting a converter (7) and a converter output switch (8) in series is connected between the stator winding and the shipborne power station (6) in parallel; an exciter (14) of the brushless synchronous motor (4) sequentially passes through a direct current excitation module switch (15) and a direct current excitation module (11) and is electrically connected with the shipborne power station; and a synchronous motor starting alternating current excitation branch which is formed by connecting an alternating current excitation module switch (16) and an alternating current excitation module (12) in series is connected between the exciter (14) and the shipborne power station in parallel. A rated output torque is provided in an idle state.
Description
Technical field
The present invention relates to a kind of startup and control method of special motor, particularly the boats and ships Shaft-Generator that starts of a kind of brushless synchronous machine based on AC excitation.
Background technology
At present, in adjustable propeller marine system, a large amount of axle generators adopts brushless synchronous machine, namely the mechanical axis of brushless synchronous machine connects the main shaft of main thruster, output stator winding switching power station, due to the rotating speed substantially constant of adjustable oar system, the output voltage in power station can pass through Traditional DC excitation module, namely active voltage management (AVR) circuit controls, ensure the constant of output voltage, the extra power of main like this promotion diesel engine can be used for generating electricity to power station, not only can the even all subsidiary engine diesel engine of closed portion, and under can ensureing to promote mainly and being operated in higher loading condiction into diesel engine, eventually reduce the fuel consume of whole system.
Along with improving constantly ship reliability, requirement gradually now, when main promotion diesel engine damages, axle generator can from power station power taking, under being operated in electric motor state, drag main thruster to rotate, if employing brushless synchronous machine, because brushless synchronous machine itself does not have speed-regulating function, adopt AVR stator there is no output voltage and excitation in a stationary situation simultaneously, therefore be difficult to be used as motor carry out starting and speed governing, in order to realize this function, general method changes motor into magneto or asynchronous machine, and increase a frequency converter to complete above-mentioned work, suitable for new ship like this, but for a large amount of existing employing brushless synchronous machines as axle generator ship reconstruction upgrading for too expensive.
Summary of the invention
The invention provides a kind of boats and ships Shaft-Generator that can be used as motor start-up, solve the technical barrier of boats and ships Shaft-Generator as motor start-up.
The technical program solves above technical problem by the following technical programs:
A kind of boats and ships Shaft-Generator that can be used as motor start-up, comprise main promotion diesel engine 3, main promotion diesel engine 3 drives main thruster 1 by gear box 2, gear box 2 stretches out another one axle and is connected with brushless synchronous machine 4, the stator winding 9 of brushless synchronous machine 4 is connected with ship electric power plant 6 by by-pass switch 5, the motor speed adjusting branch road be composed in series by frequency converter 7 and frequency converter output switch 8 is parallel with between stator winding 9 and ship electric power plant 6, the exciter 14 of brushless synchronous machine 4 is connected with ship electric power plant 6 with DC excitation module 11 by DC excitation module switch 15, the synchronous motor startup AC excitation branch road be composed in series by AC excitation module switch 16 and AC excitation module 12 is parallel with between exciter 14 and ship electric power plant 6.
Can be used as a control method for the boats and ships Shaft-Generator of motor start-up, comprise the following steps:
The first step, main promotion diesel engine 3 drives main thruster 1 by gear box 2, gear box 2 stretches out another one axle and is connected with brushless synchronous machine 4, the stator winding 9 of brushless synchronous machine 4 is connected with ship electric power plant 6 by by-pass switch 5, the motor speed adjusting branch road be composed in series by frequency converter 7 and frequency converter output switch 8 is parallel with between stator winding 9 and ship electric power plant 6, the exciter 14 of brushless synchronous machine 4 is connected with ship electric power plant 6 with DC excitation module 11 by DC excitation module switch 15, the synchronous motor startup AC excitation branch road be composed in series by AC excitation module switch 16 and AC excitation module 12 is parallel with between exciter 14 and ship electric power plant 6.
Second step, when main promotion diesel engine 3 breaks down, now by-pass switch 5 is disconnected, frequency converter output switch 8 closes, the Traditional DC excitation module switch 15 of brushless synchronous machine disconnects, AC excitation module switch 16 closes, under this operating mode, net side and the ship electric power plant 6 of frequency converter are synchronous, the pusher side of frequency converter drives brushless synchronous machine 4 to rotate, AC excitation module 12 all carries out excitation to brushless synchronous machine 4 under any rotating speed, the pusher side of frequency converter is coordinated to drive brushless synchronous machine 4, further driving main thruster 1, carry out the function of alternative main promotion diesel engine 3.
Advantage of the present invention and effect as follows, adopt AC excitation module, can starter motor in a stationary situation, adopt vector control method, can ensure under static state to provide specified Driving Torque, to overcome the stiction of whole axle system, ensure the impact in power station very little simultaneously, output have employed sine wave output filter, reduce the requirement of withstand voltage for traditional synchronous machine, can not reduce the life-span of synchronous machine, all controling parameters are not based on motor, so control is insensitive for the Parameters variation of motor.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the AC excitation principle assumption diagram of brushless synchronous machine 4 of the present invention;
Fig. 3 is the structural representation of AC excitation module 12 of the present invention;
Fig. 4 is the structural representation of frequency converter 7;
Fig. 5 is the control block diagram of brushless synchronous machine 4.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
A kind of boats and ships Shaft-Generator that can be used as motor start-up, comprise main promotion diesel engine 3, main promotion diesel engine 3 drives main thruster 1 by gear box 2, gear box 2 stretches out another one axle and is connected with brushless synchronous machine 4, the stator winding 9 of brushless synchronous machine 4 is connected with ship electric power plant 6 by by-pass switch 5, the motor speed adjusting branch road be composed in series by frequency converter 7 and frequency converter output switch 8 is parallel with between stator winding 9 and ship electric power plant 6, the exciter 14 of brushless synchronous machine 4 is connected with ship electric power plant 6 with DC excitation module 11 by DC excitation module switch 15, the synchronous motor startup AC excitation branch road be composed in series by AC excitation module switch 16 and AC excitation module 12 is parallel with between exciter 14 and ship electric power plant 6.
Can be used as a control method for the boats and ships Shaft-Generator of motor start-up, comprise the following steps:
The first step, main promotion diesel engine 3 drives main thruster 1 by gear box 2, gear box 2 stretches out another one axle and is connected with brushless synchronous machine 4, the stator winding 9 of brushless synchronous machine 4 is connected with ship electric power plant 6 by by-pass switch 5, the motor speed adjusting branch road be composed in series by frequency converter 7 and frequency converter output switch 8 is parallel with between stator winding 9 and ship electric power plant 6, the exciter 14 of brushless synchronous machine 4 is connected with ship electric power plant 6 with DC excitation module 11 by DC excitation module switch 15, the synchronous motor startup AC excitation branch road be composed in series by AC excitation module switch 16 and AC excitation module 12 is parallel with between exciter 14 and ship electric power plant 6,
Second step, when main promotion diesel engine 3 breaks down, now by-pass switch 5 is disconnected, frequency converter output switch 8 closes, the Traditional DC excitation module switch 15 of brushless synchronous machine disconnects, AC excitation module switch 16 closes, under this operating mode, net side and the ship electric power plant 6 of frequency converter are synchronous, the pusher side of frequency converter drives brushless synchronous machine 4 to rotate, AC excitation module 12 all carries out excitation to brushless synchronous machine 4 under any rotating speed, the pusher side of frequency converter is coordinated to drive brushless synchronous machine 4, further driving main thruster 1, carry out the function of alternative main promotion diesel engine 3.
Fig. 1 is structural representation of the present invention, DC excitation switch 15 can be closed, excitation is carried out by Traditional DC excitation module (AVR) 11, also AC excitation switch 16 can be closed, excitation is carried out by AC excitation module 12, DC excitation uses in the normal mode of operation, AC excitation uses in the emergency mode, it is closed when DC excitation switch 15 is different with AC excitation switch 16, the stator winding 9 of brushless synchronous machine 4 connects ship electric power plant 6 by by-pass switch 5, also ship electric power plant 6 is connected by frequency converter 7 with frequency converter output switch 8, by-pass switch 5 closes in the normal mode of operation, frequency converter output switch 8 is closed under emergency pattern, by-pass switch 5 and frequency converter output switch 8 do not allow to close simultaneously.In the normal mode of operation, namely when main promotion diesel engine 3 does not damage, main promotion diesel engine 3 drives main thruster 1, now closed by by-pass switch 5, frequency converter output switch 8 disconnects, and the Traditional DC excitation module switch 15 of brushless synchronous machine 4 closes, AC excitation module switch 16 disconnects, under this operating mode, unnecessary mechanical energy converts electric energy to by brushless synchronous machine and is supplied to ship electric power plant 6, and brushless synchronous machine 4 works in generate mode.When main promotion diesel engine damages, now by-pass switch 5 is disconnected, frequency converter output switch 8 closes, the Traditional DC excitation module switch 15 of brushless synchronous machine 4 disconnects, AC excitation module switch 16 closes, under this operating mode, net side and the ship electric power plant 6 of frequency converter are synchronous, the pusher side of frequency converter drives brushless synchronous machine 4 to rotate, AC excitation module 12 all carries out excitation to brushless synchronous machine 4 under any rotating speed, the pusher side of frequency converter is coordinated to drive brushless synchronous machine 4, further driving main thruster 1, carry out the function of alternative main promotion diesel engine 3, the control of AC excitation module 12 adopts constant high frequency voltage to drive, can ensure that the output of brushless synchronous machine stator 9 voltage is constant like this in sizable scope, the pusher side of frequency converter controls to adopt the vector control based on voltage axis, but the angle of feedback is not obtain from voltage acquisition, but obtained by photoelectric encoder 38 collection be contained on motor.
Fig. 2 is the AC excitation principle assumption diagram of brushless synchronous machine 4 of the present invention, in order to realize brushless excitation, need specialized designs exciter 14, exciter 14 is by static threephase stator winding 19, three-phase rotor windings 18 and rectification module 17 form, wherein exciter three-phase rotor windings 18 is connected with the excitation winding 13 of rectification module 17 with brushless synchronous machine 4, if adopt the method for DC excitation, what exciter threephase stator winding 19 obtained is direct current, when stationary rotor, the three-phase rotor windings 18 that direct current cannot be transferred to exciter gets on, brushless synchronous machine excitation winding 13 cannot obtain excitation, final brushless synchronous machine 4 cannot obtain excitation when static, if adopt the method for AC excitation, what exciter threephase stator winding 19 obtained is alternating current, even if when stationary rotor, the three-phase rotor windings 18 that alternating current also can be transferred to exciter gets on, brushless synchronous machine excitation winding 13 can obtain excitation, final brushless synchronous machine 4 is under any rotating speed, excitation can be obtained when comprising static.
Fig. 3 is the structural representation of AC excitation module 12 of the present invention, AC excitation module 12 is from ship electric power plant 6 power taking, a three phase rectifier module 21 is connected through three-phase input reactance device 20, convert three-phase input voltage to direct voltage, and by DC support electric capacity 26 smooth dc voltage, the three-phase full-bridge inverting circuit 25 that the power cell 24 that the output of AC excitation module 12 is made up of 6 IGBT and diode is formed forms, function converting direct-current voltage into alternating-current voltage is exported to the exciter threephase stator winding 19 of brushless synchronous machine 4, drain charge switch 22 and drain charge resistance 23 constitute discharge protection circuit jointly, ensure can effectively protect when DC bus-bar voltage is too high.
Fig. 4 is the structural representation of frequency converter 7, the input of frequency converter 7 is input sine wave filters 27, sine wave filter 27 is by three-phase reactor 29, three-phase filter resistance 30 and three-phase filter capacitor 31 form, sine wave filter 27 connects the three-phase bridge rectification circuit 33 that a power cell 32 be made up of 6 IGBT and diode is formed, convert the alternating current of three-phase to direct current, direct current is smoothing by Support Capacitor 35, and with the on all four three-phase full-bridge inverting circuit 34 of three-phase bridge rectification circuit 33 in syndeton, direct current is converted again to the adjustable alternating current of voltage to frequency, and the stator winding 9 of brushless synchronous machine 4 is connected by sine wave output filter 28 on all four with input sine wave filter 27 in structure, why need to adopt sine wave output filter 28, because traditional brushless synchronous machine 4 is not variable-frequency motor, therefore the class of insulation of stator winding is lower, and three-phase full-bridge inverting circuit 34 output is impulse waveform, very large injury can be produced to the stator insulation of brushless synchronous machine 4, therefore need to use sine wave output filter 28 by voltage smoothly for sinusoidal wave, ensure the reliable of stator winding 9.
Fig. 5 is the control block diagram of brushless synchronous machine 4, whole control algolithm is based on stator voltage synchronous coordinate system, the difference of reference rotation velocity Nr_ref and actual speed Nr is by a proportional and integral controller 39, and be multiplied by-1 and obtain d axle reference current Id_ref, the difference of d axle reference current Id_ref and d axle actual current Id is by a proportional and integral controller 40, decoupling zero obtains d axle reference output voltage Vd_ref again, by the difference of q axle reference current Iq_ref and q axle actual current Iq by a proportional and integral controller 41, then decoupling zero obtains q axle reference output voltage Vq_ref.D axle reference output voltage Vd_ref and q axle reference output voltage Vq_ref achieves 2 → 3 conversions 42, become the output voltage reference value V_ref of three-phase, and input a PWM generation module 45, final formation can drive the drive singal of three-phase full-bridge inverting circuit 34, now need to gather the threephase stator voltage V of AC excitation motor and threephase stator electric current I, achieve 3 → 2 conversions 43, obtain d shaft voltage Vd respectively, q shaft voltage Vq, d shaft current Id and q shaft current Iq, angle θ required for the conversion of 42 and 43 comes from photoelectric encoder 38, θ is carried out integration and can obtain ω e, and obtain actual speed Nr through computing, simultaneously, the three-phase reference voltage Ve_ref of AC excitation module 11 is fixing-200Hz, namely direction must be contrary with rotating speed, excitation is carried out to brushless synchronous machine 4.
Claims (2)
1. one kind can be used as the boats and ships Shaft-Generator of motor start-up, comprise main promotion diesel engine (3), main promotion diesel engine (3) is linked together by gear box (2) and main thruster (1), the another one axle of gear box (2) is connected with brushless synchronous machine (4), the stator winding (9) of brushless synchronous machine (4) is electrically connected by by-pass switch (5) and ship electric power plant (6), the motor speed adjusting branch road formed after being connected by frequency converter (7) and frequency converter output switch (8) is parallel with between stator winding (9) with ship electric power plant (6), the exciter (14) of brushless synchronous machine (4) is electrically connected with ship electric power plant (6) by DC excitation module switch (15) and DC excitation module (11) successively, the synchronous motor startup AC excitation branch road formed after being connected by AC excitation module switch (16) and AC excitation module (12) is parallel with between exciter (14) with ship electric power plant (6).
2. can be used as a control method for the boats and ships Shaft-Generator of motor start-up, comprise the following steps:
The first step, main promotion diesel engine (3) drives main thruster (1) by gear box (2), gear box (2) stretches out another one axle and is connected with brushless synchronous machine (4), the stator winding (9) of brushless synchronous machine (4) is electrically connected with ship electric power plant (6) by by-pass switch (5), between stator winding (9) with ship electric power plant (6) in parallel by frequency converter (70 and frequency converter output switch (8) connect the motor speed adjusting branch road formed afterwards, the exciter (14) of brushless synchronous machine (4) is connected with ship electric power plant (6) with DC excitation module (11) by DC excitation module switch (15) successively, the synchronous motor startup AC excitation branch road be composed in series by AC excitation module switch (16) and AC excitation module (12) is parallel with between exciter (14) and ship electric power plant (6),
Second step, when main promotion diesel engine (3) breaks down, by-pass switch (5) is disconnected, frequency converter output switch (8) is closed, the Traditional DC excitation module switch (15) of brushless synchronous machine is disconnected, AC excitation module switch (16) is closed, under this operating mode, the net side of frequency converter and ship electric power plant (6) are synchronously, the pusher side of frequency converter drives brushless synchronous machine (4) to rotate, AC excitation module (12) all carries out excitation to brushless synchronous machine (4) under any rotating speed, the pusher side of frequency converter is coordinated to drive brushless synchronous machine (4), further driving main thruster (1), carry out the function of alternative main promotion diesel engine (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510858327.7A CN105429358A (en) | 2015-11-30 | 2015-11-30 | Ship shaft power generation system capable of being started as motor and control method for ship shaft power generation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510858327.7A CN105429358A (en) | 2015-11-30 | 2015-11-30 | Ship shaft power generation system capable of being started as motor and control method for ship shaft power generation system |
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| CN105429358A true CN105429358A (en) | 2016-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510858327.7A Pending CN105429358A (en) | 2015-11-30 | 2015-11-30 | Ship shaft power generation system capable of being started as motor and control method for ship shaft power generation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021254031A1 (en) * | 2020-06-16 | 2021-12-23 | 上海电气风电集团股份有限公司 | Wind driven generator and power conversion circuit control method and device thereof |
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| US4743777A (en) * | 1986-03-07 | 1988-05-10 | Westinghouse Electric Corp. | Starter generator system with two stator exciter windings |
| US4772802A (en) * | 1987-08-19 | 1988-09-20 | Sundstrand Corporation | Starting/generating system |
| CN203225642U (en) * | 2013-05-16 | 2013-10-02 | 中国船舶重工集团公司第七一二研究所 | Marine brushless double-fed axle generator system |
| CN104038005A (en) * | 2014-05-06 | 2014-09-10 | 北京赛思亿电气科技有限公司 | Ship shaft generator capable of being used as motor and running state switching method thereof |
| CN104038109A (en) * | 2014-05-06 | 2014-09-10 | 北京赛思亿电气科技有限公司 | Starter of ship shaft generator capable of being used as motor and start method thereof |
| WO2015040529A2 (en) * | 2013-09-19 | 2015-03-26 | Marelli Motori S.P.A. | Hybrid operating synchronous electrical machine |
| CN205141917U (en) * | 2015-11-30 | 2016-04-06 | 北京赛思亿电气科技有限公司 | Can take power generation system as boats and ships axle that motor starts |
-
2015
- 2015-11-30 CN CN201510858327.7A patent/CN105429358A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4743777A (en) * | 1986-03-07 | 1988-05-10 | Westinghouse Electric Corp. | Starter generator system with two stator exciter windings |
| US4772802A (en) * | 1987-08-19 | 1988-09-20 | Sundstrand Corporation | Starting/generating system |
| CN203225642U (en) * | 2013-05-16 | 2013-10-02 | 中国船舶重工集团公司第七一二研究所 | Marine brushless double-fed axle generator system |
| WO2015040529A2 (en) * | 2013-09-19 | 2015-03-26 | Marelli Motori S.P.A. | Hybrid operating synchronous electrical machine |
| CN104038005A (en) * | 2014-05-06 | 2014-09-10 | 北京赛思亿电气科技有限公司 | Ship shaft generator capable of being used as motor and running state switching method thereof |
| CN104038109A (en) * | 2014-05-06 | 2014-09-10 | 北京赛思亿电气科技有限公司 | Starter of ship shaft generator capable of being used as motor and start method thereof |
| CN205141917U (en) * | 2015-11-30 | 2016-04-06 | 北京赛思亿电气科技有限公司 | Can take power generation system as boats and ships axle that motor starts |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021254031A1 (en) * | 2020-06-16 | 2021-12-23 | 上海电气风电集团股份有限公司 | Wind driven generator and power conversion circuit control method and device thereof |
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