CN107404262A - Load drive device, electric machine assembly and motor driver - Google Patents
Load drive device, electric machine assembly and motor driver Download PDFInfo
- Publication number
- CN107404262A CN107404262A CN201610332777.7A CN201610332777A CN107404262A CN 107404262 A CN107404262 A CN 107404262A CN 201610332777 A CN201610332777 A CN 201610332777A CN 107404262 A CN107404262 A CN 107404262A
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- circuit
- phase
- motor driver
- electronic switch
- bidirectional electronic
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Classifications
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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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/20—Arrangements for starting
- H02P6/22—Arrangements for starting in a selected direction of rotation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The embodiments of the invention provide a kind of motor driver and apply its electric machine assembly and load drive device.The motor driver also includes control circuit of phase locking, triggers circuit and bidirectional electronic switch, the control circuit of phase locking is used to track ac power frequency and phase, and send one high frequency changed to by low frequency until with AC power with frequency same-phase lock phase boxcar to the triggers circuit, the triggers circuit is before lock phase boxcar high level or low level pulse width are less than power cycle, switched in a predefined manner between conducting and cut-off according to bidirectional electronic switch described in the Automatic level control of the lock phase boxcar, when locking phase boxcar high level or low level pulse width is less than power cycle, the triggers circuit control bidirectional electronic switch is fully energized；At least one the control circuit of phase locking, triggers circuit and bidirectional electronic switch are on the semiconductor chip.Above-mentioned motor driver, which can ensure along fixed-direction to start when motor is powered every time, to be rotated.
Description
Technical field
The present invention relates to Motor Control Field, more particularly to a kind of motor driver of motor and apply the motor
The electric machine assembly and load drive device of drive device.
Background technology
Single-phase synchronous machine armature field can regard the pulsating field of two positive and negative rotation magnetic field synthesis as, and magnetic pole has when starting
Torque is 0 dead point.Traditional startup method generally use non-uniform gap, uneven magnetic circuit, enable to be parked in when magnetic pole N is static pre-
Determine on initial position, i.e. between 2~178 electrical angles or 182~358 electrical angles, to avoid starting stress as 0 dead point.But connect
During energization source, the start-phase of electric current is random, and it is to specify direction of rotation that can not ensure magnetic pole stress, therefore the method starts
Indefinite direction of rotation, Vibration on Start-up be present, detent torque is small and starts the problems such as failing.
The content of the invention
In view of above-mentioned condition, it is necessary to a kind of motor driver for being capable of controlled motor orientation startup is provided and application should
The electric machine assembly and load drive device of motor driver.
The embodiments of the invention provide a kind of motor driver, including housing, the semiconductor chip that is packaged in housing,
The motor driver also includes control circuit of phase locking, triggers circuit and bidirectional electronic switch, and the control circuit of phase locking is used
In tracking ac power frequency and phase, and send one and high frequency is changed to up to the lock with AC power with frequency same-phase by low frequency
Phase boxcar is small in lock phase boxcar high level or low level pulse width to the triggers circuit, the triggers circuit
Before power cycle, according to it is described lock phase boxcar Automatic level control described in bidirectional electronic switch in a predefined manner conducting with
Switch between cut-off, started with controlled motor along direction initialization, when lock phase boxcar high level or low level pulse width
During less than power cycle, the triggers circuit control bidirectional electronic switch is fully energized；The control circuit of phase locking, triggers circuit and
At least one bidirectional electronic switch is on the semiconductor chip.
As a kind of preferred scheme, the bidirectional electronic described in the trigger circuit triggers when locking phase boxcar and being high level
The positive half-wave string of switch conduction supply voltage, the two-way electricity described in the trigger circuit triggers when locking phase boxcar and being low level
Sub switch turns on minus half wave train of AC supply voltage.
As a kind of preferred scheme, the motor driver also includes step-down rectifier mu balanced circuit, the step-down rectifier
Mu balanced circuit is used to be steady dc voltage by the voltage processing of AC power and is supplied to the control circuit of phase locking and touches
Power Generation Road.
As a kind of preferred scheme, a first terminal and a Second terminal, first and second described terminal are drawn from housing
The both ends of the bidirectional electronic switch and the step-down rectifier mu balanced circuit both ends are connected respectively.
As a kind of preferred scheme, the first terminal is drawn to third terminal from housing, described first and third terminal difference
The step-down rectifier mu balanced circuit both ends are connected, second and third described terminal connects the two of the bidirectional electronic switch respectively
End.
As a kind of preferred scheme, the step-down rectifier mu balanced circuit is packaged in enclosure interior.
As a kind of preferred scheme, the polarity of the fully energized previous ripple of bidirectional electronic switch is positive pole, after fully energized
The polarity of first ripple be negative pole；It is fully energized or the polarity of the fully energized previous ripple of bidirectional electronic switch is negative pole
The polarity of first ripple afterwards is positive pole.
As a kind of preferred scheme, the triggers circuit is sent before electric motor starting makes rotor be parked in specified location
Orientation triggering pulse.
As a kind of preferred scheme, the orientation triggering pulse is the positive half-wave or more than 1 wave number of more than 1 wave number
Negative half-wave.
Embodiments of the invention also provide a kind of electric machine assembly, including motor and with the motor joining in AC power two
End as above any one of motor driver.
Embodiments of the invention also provide a kind of load drive device, including electric machine assembly as described above and by the electricity
The load of thermomechanical components driving.
As a kind of preferred scheme, the load drive device also includes a clutch, and the electric machine assembly passes through described
Clutch drives the load.
As a kind of preferred scheme, the clutch be spring clutch, centrifugal clutch, friction clutch or electromagnetism from
Clutch.
Mains half-wave when above-mentioned motor driver provides the rotor startup starting of determination using the facies-controlled mode of lock
Direction and the reversing mode of half wave train, can be such that motor starts by assigned direction, and can smoothly be transferred to synchronous rotary, in application
Electric machine assembly and the load drive device of stating motor driver are simple in construction, vibrations noise is small, service life length.And will lock
All or not encapsulation in integrated circuits, such as can be by ASIC single-chips for phase control circuit, triggers circuit and bidirectional electronic switch
Realize, circuit cost can be reduced, and improve the reliability of circuit.
Brief description of the drawings
In accompanying drawing：
Fig. 1 is the electric machine assembly of first embodiment of the invention and its functional-block diagram of driving load.
Fig. 2 is the schematic diagram of motor in Fig. 1.
Fig. 3 is the functional-block diagram of motor driver in Fig. 1.
Fig. 4 is the oscillogram of motor driver controlled motor start-up course in Fig. 1.
The functional-block diagram of the electric machine assembly driving load of Fig. 5 second embodiment of the invention.
Fig. 6 is the functional-block diagram of motor driver in Fig. 5.
Main element symbol description
Following embodiment will combine above-mentioned accompanying drawing and further illustrate the present invention.
Embodiment
Below in conjunction with the accompanying drawings, by the way that the embodiment of the present invention is described in detail, technical scheme will be made
And other beneficial effects are apparent.Used it is appreciated that accompanying drawing only provides with reference to explanation, be not used for limiting the present invention
System.The connection shown in accompanying drawing is only to be described for ease of clear, and does not limit connected mode.
Referring to Fig. 1, the electric machine assembly of first embodiment of the invention includes motor 10 and opened for controlled motor orientation
Dynamic motor driving device 30, the motor driver 30 and motor 10 and power switch S1 are connected in series in 60 liang of AC power
End.The motor 10 can directly drive load 50, also can be by loading bindiny mechanism's driving load.In present embodiment, motor
10 be single-phase permanent-magnet synchronous motor, in other embodiment, motor 10 or single-phase excitation magnetic synchronization motor or brush DC electricity
Machine.In present embodiment, the load bindiny mechanism is clutch 40, and the clutch 40 can be spring clutch, centrifugation clutch
Device, friction clutch or electromagnetic clutch.In present embodiment, illustrated so that load 50 is the flabellum of blower fan as an example, other
In embodiment, load can be the impeller or other equipment of water pump.Certainly, if 50 rotary inertias of load are smaller, can be not provided with bearing
Carry bindiny mechanism and allow the direct drive of motor 10 load 50 to run.
Fig. 2 is shown according to the single-phase permanent-magnet synchronous motor of an embodiment of the present invention.The synchronous motor 10 includes stator
With can relative stator rotation rotor 14.The stator winding 16 that stator has stator core 12 and is set around in stator core 12.
Stator core 12 can be made up of soft magnetic materials such as pure iron, cast iron, cast steel, electrical sheet, silicon steel.Rotor 14 has permanent magnet, stator
Rotor 14 encloses in steady-state process/rotating speed the constant-speed operation of minute with 60f/p when winding 16 concatenates with AC power 60, and wherein f is
The frequency of the AC power, p are the numbers of pole-pairs of rotor.
There is non-uniform gap 18 so that its pole axis when static of rotor 14 between the magnetic pole of stator and the magnetic pole of rotor 14
R offsets an angle [alpha] relative to the pole axis S of stator, to allow motor 10 to be powered every time in the presence of motor driver 30
When rotor can have detent torque.In present embodiment, stator and rotor are respectively provided with two magnetic poles.It should be understood that more
In more embodiments, the number of magnetic poles of stator and rotor can also be unequal, and has more magnetic poles, such as four, six etc..
In present embodiment, the stator winding 16 and motor driver 30 of motor are series at the both ends of AC power 60.Institute
Stating motor driver 30 can be such that motor starts in each start each along a fixed-direction.
Fig. 3 is refer to, a kind of implementation of the motor driver 30 is shown.In present embodiment, the motor
Drive device 30 be a two-port application-specific IC (Application Specific Integrated Circuit,
ASIC) chip, including housing 31, two terminals 1,2 from the stretching of housing 31 and the drive circuit being packaged in housing, institute
Drive circuit is stated on semiconductor chip, including lock phase control triggers circuit 32, the decompression being connected between two terminals 1,2
Regulator rectifier circuit 34 and bidirectional electronic switch 36.The lock phase control triggers circuit 32 includes control circuit of phase locking 322 and touched
Power Generation Road 324, the lock phase control triggers circuit 32 are configured as the rotor magnetic pole position according to motor, start steering, control
The starting wave train for the conductive waveform that the bidirectional electronic switch 36 turns on is opened for positive half-wave or negative half-wave and control bidirectional electronic
Close 36 in a predefined manner between conducting and cut-off state to switch, stator winding 16 is opened in the electric motor starting stage only along setting
Dynamic direction dragging rotor 14 rotates.
The AC power 60 can be mains ac power supply, have such as 50 hertz or 60 hertz of fixed frequency, electricity
Pressure can be 110 volts, 220 volts or 230 volts etc..The step-down rectifier mu balanced circuit 34 receives AC power and enters AC power
Row step-down rectifier voltage stabilizing processing is changed between 3 volts to 18 volts of the stabilization that magnitude of voltage generally uses for most of chips or circuit
Voltage (such as 5V) is simultaneously supplied to the lock phase control triggers circuit 32.The step-down rectifier mu balanced circuit 34 includes decompression electricity
Road, rectification circuit and mu balanced circuit, the reduction voltage circuit can use resistance, electric capacity or transformer etc. to drop AC power
Pressure, the voltage after decompression are changed into DC voltage by rectification circuit, and rectification circuit can use full bridge rectifier, Half bridge rectifier electricity
Road, full-wave rectifying circuit or half-wave rectifying circuit.Voltage after rectification is changed into stable 5V voltages, mu balanced circuit through mu balanced circuit
The electronic components such as voltage-regulator diode or three terminal regulator can be used.The bidirectional electronic switch 36 can be three terminal bidirectional alternating-current switch
(TRIAC), IGCT (SCR) or MOS switch element, the corresponding triggers circuit 324 locked in phase control triggers circuit 32
For the triggers circuit of TRIAC, SCR or MOS element, the triggers circuit controls the bidirectional electronic switch 36 according to predetermined way
Conducting and cut-off.In present embodiment, the bidirectional electronic switch 36 is three terminal bidirectional alternating-current switch, and two anode is distinguished
Two terminals 1,2 are connected, its control pole connects the triggers circuit 324.
Referring to Fig. 4, the existing control principle to the motor driver 30 illustrates.During electric motor starting, electricity is pressed
The voltage that source switch S1, the output size of AC power 60 and direction sinusoidally change with the time, the lock phase control electricity
Road 322 can track supply frequency and phase, and send one and change to high frequency until with AC power with frequency same-phase by low frequency
Lock phase boxcar.The lock phase boxcar that the triggers circuit 324 is sent according to the control circuit of phase locking 322, start
When its high level or low level pulse width be more than power cycle, bidirectional electronic switch 36 is controlled when this wave train is high level
Conducting and cut-off state, the voltage for making to be added on motor 10 are positive half-wave string, lock when phase boxcar is low level and trigger herein
The voltage that bidirectional electronic switch 36 makes to be added on motor 10 is minus half wave train.
When the lock phase boxcar high level or low level pulse width that control circuit of phase locking 322 is sent are less than power cycle
When, it is AC supply voltage that the triggers circuit 324, which controls the fully energized voltage for making to be added on motor 10 of bidirectional electronic switch 36,.
After the bidirectional electronic switch 36 is fully energized, the polarity for first ripple being added on motor 10 and the polarity of fully energized previous ripple
On the contrary, if the i.e. polarity of the fully energized previous ripple of bidirectional electronic switch 36 were positive half-wave, the pole of fully energized first ripple
Property for negative half-wave, vice versa.In above process, the lock phase control triggers circuit 32 effectively controls bidirectional electronic in real time
The conducting and cut-off of switch 36, and controlled loading makes the main magnetic of motor 10 to the polarity of the alternating current in motor stator winding 16
Logical and armature supply direction changes with the reversing of power supply, makes stator field in motor drive rotor 14 only to one all the time
Individual direction rotates, to realize that the orientation of rotor starts.
In present embodiment, motor triggers circuit 324 when starting or stoping can send orientation triggering pulse, i.e., 1
Individual or more than 1 wave number positive half-wave, so that rotor N poles are parked in specified location.In other embodiment, position pulse
It can be negative half-wave, further, in other embodiment, position pulse all be sent when can also originate, stop.Further
, the initial phase of wave head in position pulse conducting can control 0-175 electrical angles using avoid starting stress as 0 it is dead
Point.Further, motor 10 also on stator, can help rotor N poles to be parked in specified location with by permanent magnet.
According to above-mentioned principle, illustrated with reference to Fig. 4 so that rotor is rotated forward and turned clockwise as an example, when initial, rotor N poles
It is parked in specified location, the voltage that the output size of AC power 60 and direction sinusoidally change with the time, in Fig. 4
Power supply wave shape, the control circuit of phase locking 322 track supply frequency and phase, and send one high frequency changed to by low frequency until with
Power supply with frequency same-phase lock phase boxcar, such as the lock phase waveform in Fig. 4.Its high level or low level pulse width during beginning
More than power cycle, the triggers circuit 324 controls leading for the bidirectional electronic switch 36 when lock phase boxcar is high level
Logical and cut-off state, the voltage for making to be added on motor 10 are positive half-wave string, have forward current to flow through in stator winding 16, and driving turns
Son 14 starts rotation along clockwise direction, then locks phase boxcar and is changed into low level, the triggers circuit 324 is according to this low electricity
The voltage that flat triggering bidirectional electronic switch 36 makes to be added on motor 10 is minus half wave train, has reverse current stream in stator winding 16
Cross, now rotor magnetic pole is rotated and accelerated since pre-determined bit state is with positive stator rotating excitation field, the startup stage of motor 10,
Conducting and cut-off state by this principle control bidirectional electronic switch 36.When the lock phase square wave that control circuit of phase locking 322 is sent
When string high level or low level pulse width are less than power cycle, now spinner velocity have also exceeded half synchronous speed, institute
Stating triggers circuit 324 drives the bidirectional electronic switch 36 fully energized.I.e. described triggers circuit 324 controls the bidirectional electronic to open
Close 36 fully energized, the voltage for making to be added on motor 10 is AC supply voltage, spinner velocity is directly pulled in and stator winding 16
Consistent, the rotating speed identical synchronous speed that rotates forward magnetic direction.After the bidirectional electronic switch 36 is fully energized, motor 10 is added to
On first ripple polarity and fully energized previous ripple opposite polarity, i.e., if bidirectional electronic switch 36 is fully energized previous
The polarity of ripple is negative half-wave, then the polarity of fully energized first ripple is positive half-wave, and vice versa.By locking phase control, even if
The start-phase of the voltage of AC power 60 is random, but the polarity for the supply voltage being loaded on motor 10 is all according to predetermined party
Formula loads, and in present embodiment, is powered when rotor startup is initial after locking phase control triggers circuit 32 and controlling in stator winding
Voltage is positive half-wave, and rotor can start according to predetermined clockwise direction, will not occur that rotor direction of rotation is indefinite, Vibration on Start-up
Deng startup failure problem.
Fin can be housed on the motor driver 30, think that motor driver 30 is radiated, the motor
The terminal 1,2 of drive device 30 can be 2 connector lugs, and two connector lugs can be plug or terminal screw, can also pass through welding
Mode be connected with motor 10 and AC power 60.
Bidirectional electronic switch when motor driver 30 described in present embodiment provides the rotor startup starting of determination
The mains half-wave direction of 36 conductings and the reversing mode of half wave train, can be such that motor starts by assigned direction, and can smoothly turn
Enter synchronous rotational speed rotation.This motor driver 30 does not have to position sensor, microprocessor, and the drive circuit of motor all encapsulates
In integrated circuits, such as realized with asic chip, the installation of circuit can be facilitated, reduce circuit size, reduce circuit cost, and carried
The reliability of high circuit.
Big using the load such as rotary inertia of above-mentioned electric machine assembly referring to Fig. 1, synchronous electric machine torque fluctuation may
Cause synchronization failure, therefore using the connection of clutch 40 load 50, when motor 10 starts, first allow the light-load starting of motor 10, treat electricity
Started again with clutch 40 with dynamic load when machine rotor 14 reaches certain rotating speed, solve the initial start stage output torque of motor 10 not
It is enough band dynamic load so as to the problem of starting unsuccessfully.If load inertia is smaller, motor 10 can also directly drive load startup optimization.
Using the type of drive of the present invention, closing force when closing force be much larger than low speed during clutch high-speed cruising, and permission motor has
Longer start-up course.
To blower fan, pump-type load, load torque is small during its low speed, can use and directly drive or use simple spring
Clutch drives.
The present invention solve synchronous motor orientation start and load-carrying problem, and it is simple in construction, vibrations noise it is small, make
Use long lifespan.
Fig. 5 and Fig. 6 is refer to, the second embodiment of motor driver 30 is shown, second embodiment and first is in fact
It is essentially identical to apply the structure of mode, the difference is that in second embodiment, the motor driver 30 has three terminal 1-
3, the terminal 1 connects the step-down rectifier mu balanced circuit 34, and the terminal 2,3 is connected to the both ends of bidirectional electronic switch 36, institute
Live wire of the terminal 1 by the power switch S1 connections AC power 60 is stated, the terminal 2 is opened by motor 10 and the power supply
The live wire of S1 connections AC power 60 is closed, the terminal 3 connects the zero line of AC power 60.In other embodiment, terminal 1 can
The zero line of AC power is connected, terminal 2 passes through motor 10 by the live wire of the power switch S1 connections AC power, terminal 3
Connect the zero line of AC power 60.
In above-mentioned embodiment, circuit cost can be reduced, and carry by the drive circuit encapsulation of motor in integrated circuits
The reliability of high circuit.
In other embodiment, visual actual conditions, by the step-down rectifier mu balanced circuit 34, lock phase control triggers circuit
32nd, bidirectional electronic switch 36 is all or part of integrates in integrated circuits, for example, it is phased only to integrate lock in integrated circuits
Triggers circuit 32 processed and bidirectional electronic switch 36, and step-down rectifier mu balanced circuit 34 is located at integrated circuit external.
For another example can also be by the reduction voltage circuit in step-down rectifier mu balanced circuit 34 and bidirectional electronic switch 36 located at integrated
Outside circuit, and integrating rectification circuit in integrated circuits (can only include rectifier bridge without including dropping resistor or other decompressions
Element) and the lock phase control triggers circuit 32.Can also be integrated in integrated circuits by partial low-power, and Gao Gong will be used as
Reduction voltage circuit and bidirectional electronic switch 36 in the step-down rectifier mu balanced circuit 34 of rate part are located at outside integrated circuit.Example again
Such as, the drive circuit of the motor driver 30 all can also be arranged on printed circuit board (PCB) according to the design needs.
The control circuit of phase locking in embodiment of the present invention is used to track ac power frequency and phase, and sends one
It is individual high frequency changed to by low frequency until with AC power with frequency same-phase lock phase boxcar to the triggers circuit, the triggering
Circuit is before lock phase boxcar high level or low level pulse width are less than power cycle, according to the lock phase boxcar
Automatic level control described in bidirectional electronic switch switch in a predefined manner between conducting and cut-off, when lock phase boxcar high level
Or low level pulse width, when being less than power cycle, the triggers circuit control bidirectional electronic switch is fully energized, it is ensured that electricity
Start when machine is powered every time along fixed-direction and rotate.In blower fan such as exhaust fan, lampblack absorber etc. and water pump such as circulating pump, draining pump etc.
In the application of load drive device, can allow by rotor driving impeller/fan use flexure type blade, so as to improve blower fan,
The efficiency of water pump.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, and with MCU, FPGA or antilogical circuit realiration this control thought, the patent for being similarly included in the present invention is protected
In the range of shield.
Claims (13)
1. a kind of motor driver, including housing, the semiconductor chip that is packaged in housing, the motor driver also wrap
Include control circuit of phase locking, triggers circuit and bidirectional electronic switch, the control circuit of phase locking be used to tracking ac power frequency and
Phase, and send one high frequency changed to by low frequency until with AC power with frequency same-phase lock phase boxcar to the triggering
Circuit, the triggers circuit is before lock phase boxcar high level or low level pulse width are less than power cycle, according to institute
Bidirectional electronic switch described in stating the Automatic level control of lock phase boxcar switches between conducting and cut-off in a predefined manner, with control
Motor starts along direction initialization, described when locking phase boxcar high level or low level pulse width is less than power cycle
Triggers circuit control bidirectional electronic switch is fully energized；The control circuit of phase locking, triggers circuit and bidirectional electronic switch at least it
One on the semiconductor chip.
2. motor driver as claimed in claim 1, it is characterised in that described when locking phase boxcar and being high level to touch
Power Generation Road triggers the positive half-wave string of the bidirectional electronic switch turn-on power voltage, described in when locking phase boxcar and being low level
Minus half wave train of bidirectional electronic switch conducting AC supply voltage described in trigger circuit triggers.
3. motor driver as claimed in claim 2, it is characterised in that the motor driver also includes step-down rectifier
Mu balanced circuit, the step-down rectifier mu balanced circuit are used to the voltage processing of AC power is steady dc voltage and is supplied to
The control circuit of phase locking and triggers circuit.
4. motor driver as claimed in claim 3, it is characterised in that draw a first terminal and one second end from housing
Son, first and second described terminal connect the both ends of the bidirectional electronic switch and the step-down rectifier mu balanced circuit two respectively
End.
5. motor driver as claimed in claim 3, it is characterised in that from housing extraction the first terminal to third terminal,
Described first and third terminal connect the step-down rectifier mu balanced circuit both ends respectively, second and third described terminal connects respectively
The both ends of the bidirectional electronic switch.
6. the motor driver as described in claim 4 or 5, it is characterised in that the step-down rectifier mu balanced circuit is packaged in
Enclosure interior.
7. motor driver as claimed in claim 1, it is characterised in that the fully energized previous ripple of bidirectional electronic switch
Polarity be positive pole, it is fully energized after the polarity of first ripple be negative pole；Or the bidirectional electronic switch is fully energized previous
The polarity of ripple is negative pole, it is fully energized after the polarity of first ripple be positive pole.
8. motor driver as claimed in claim 1, it is characterised in that the triggers circuit is sent before electric motor starting to be made
Rotor is parked in the orientation triggering pulse of specified location.
9. motor driver as claimed in claim 8, it is characterised in that the orientation triggering pulse is more than 1 wave number
Positive half-wave or more than 1 wave number negative half-wave.
10. a kind of electric machine assembly, including motor and with the motor joining in the 1-9 items of AC power both ends such as claim
Motor driver described in any one.
11. a kind of load drive device, including electric machine assembly as claimed in claim 10 and driven by the electric machine assembly
Load.
12. load drive device as claimed in claim 11, it is characterised in that the load drive device also includes a clutch
Device, the electric machine assembly drive the load by the clutch.
13. load drive device as claimed in claim 12, it is characterised in that the clutch is spring clutch, centrifugation
Clutch, friction clutch or electromagnetic clutch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610332777.7A CN107404262B (en) | 2016-05-18 | 2016-05-18 | Load driving device, motor assembly and motor driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610332777.7A CN107404262B (en) | 2016-05-18 | 2016-05-18 | Load driving device, motor assembly and motor driving device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107404262A true CN107404262A (en) | 2017-11-28 |
| CN107404262B CN107404262B (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610332777.7A Expired - Fee Related CN107404262B (en) | 2016-05-18 | 2016-05-18 | Load driving device, motor assembly and motor driving device |
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| CN (1) | CN107404262B (en) |
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| CN103227594A (en) * | 2012-01-30 | 2013-07-31 | Ls产电株式会社 | Medium voltage inverter control apparatus and medium voltage inverter system |
| CN203387444U (en) * | 2013-08-29 | 2014-01-08 | 西安天水二一三电器有限公司 | Power supply frequency self-adaptive adjusting device for motor soft starter |
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