CN109060213A - A kind of appraisal procedure and test macro of electric scroll compressor motor torque - Google Patents

A kind of appraisal procedure and test macro of electric scroll compressor motor torque Download PDF

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Publication number
CN109060213A
CN109060213A CN201810818363.4A CN201810818363A CN109060213A CN 109060213 A CN109060213 A CN 109060213A CN 201810818363 A CN201810818363 A CN 201810818363A CN 109060213 A CN109060213 A CN 109060213A
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CN
China
Prior art keywords
compressor
motor
dynamometer machine
electric
machine
Prior art date
Application number
CN201810818363.4A
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Chinese (zh)
Inventor
钱宇科
张龙泉
孙磊
吴佳楠
Original Assignee
江苏银河同智新能源科技有限公司
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Priority to CN201810818363.4A priority Critical patent/CN109060213A/en
Publication of CN109060213A publication Critical patent/CN109060213A/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes

Abstract

The invention discloses the appraisal procedure and test macro of a kind of electric scroll compressor motor torque, appraisal procedure includes connecting electric scroll compressor rotor with dynamometer machine, is rotated synchronously with realizing;It controls dynamometer machine and loads preset loading capacity, and adjust compressor electric motor revolving speed within the scope of preset rotation speed;Judge within the scope of preset rotation speed, whether compressor electric motor step-out phenomenon occurs;If not occurring step-out phenomenon, the loading capacity of dynamometer machine is increased, and adjusts compressor electric motor revolving speed, until step-out phenomenon occurs in compressor electric motor;If there is step-out phenomenon, current dynamometer machine loading capacity and compressor electric motor revolving speed are recorded;If the actual torque of compressor in actual work is less than the dynamometer machine loading capacity of record under the motor speed of record, electric scroll compressor motor torque qualification is assessed, it is otherwise unqualified.The appraisal procedure can rationally assess the reliability of compressor electric motor driving in practical applications, it is ensured that product is efficient, stablizes, and improves user experience.

Description

A kind of appraisal procedure and test macro of electric scroll compressor motor torque
Technical field
The present invention relates to compressor field, in particular to a kind of the appraisal procedure and survey of electric scroll compressor motor torque Test system.
Background technique
In recent years, new energy, which was called, increasingly deepens the popular feeling, and electric car promotion efficiency is substantially increased, and electric air-conditioning is in pure electricity Play particularly important role on electrical automobile, as the core component of compressor, the efficiency of motor and its commenting for torque range Estimate the deciding factor as a outstanding compressor.
The motor majority of electric scroll compressor is inner-rotor type, and rotor is formed by silicon steel sheet die casting, and stator is then by three-phase Winding is entwined in sequence, changes three-phase windings current direction by driving circuit to change magnetic direction, thus Drive rotor high speed rotation.The torque of motor directly determines the load capacity of motor, designs the driver of a compressor, The maximum load capacity of this compressor, that is, exhaust pressure limit value will be determined first, then determine that motor is corresponding Torque range.It so just can ensure that in use, motor is not in step-out phenomenon, ensures that the safety and comfort of user are driven It sails.
Summary of the invention
In order to solve problems in the prior art, the present invention provides a kind of assessment sides of electric scroll compressor motor torque Method rationally assesses the reliability of newly-designed compressor electric motor driving in practical applications, it is ensured that product is efficient, stablizes, and improves Experience, the technical solution is as follows:
On the one hand, the present invention provides a kind of appraisal procedure of electric scroll compressor motor torque, the appraisal procedures Include:
Electric scroll compressor rotor is connect with dynamometer machine, is rotated synchronously with realizing;
It controls the dynamometer machine and loads preset loading capacity, and adjust turning for compressor electric motor in the preset range of speeds Speed;
Judge in the preset range of speeds, whether the compressor electric motor step-out phenomenon occurs;
If not occurring step-out phenomenon, the loading capacity of the dynamometer machine is increased, and adjusts the revolving speed of compressor electric motor, until There is step-out phenomenon in compressor electric motor;
If there is step-out phenomenon, current dynamometer machine loading capacity and compressor electric motor revolving speed are recorded;
If the actual torque of compressor in actual work is less than the dynamometer machine loading capacity of record under the motor speed of record, It is qualified then to assess the electric scroll compressor motor torque, it is otherwise unqualified.
Further, the actual torque of compressor in actual work under the motor speed of record is obtained by following It takes:
Under standard condition, tests the compressor in the motor speed and actually enter power;
According to the following formula, actual torque is obtained:
T=9550 × P/n, wherein T is torque, and P is that compressor actually enters power, and n is motor speed.
On the other hand, the present invention provides a kind of appraisal procedures of electric scroll compressor motor torque, comprising:
Electric scroll compressor rotor is connect with dynamometer machine, is rotated synchronously with realizing;
It controls the dynamometer machine and loads preset loading capacity, and adjust turning for compressor electric motor in the preset range of speeds Speed;
Judge in the preset range of speeds, whether the compressor electric motor step-out phenomenon occurs;
If not occurring step-out phenomenon, the loading capacity of the dynamometer machine is increased, and adjusts the revolving speed of compressor electric motor, until There is step-out phenomenon in compressor electric motor;
If there is step-out phenomenon, current dynamometer machine loading capacity and compressor electric motor revolving speed are recorded;
Judge whether corresponding compressor horsepower is greater than the rated power of compressor when step-out, if so, assessing the electricity The torque of dynamic vortex compressor electric motor is qualified, otherwise unqualified.
Further, corresponding compressor horsepower is obtained by following formula when the step-out:
T=9550 × P/n, wherein T is the dynamometer machine loading capacity of record, and n is the compressor electric motor revolving speed of record, and P is to lose Corresponding compressor horsepower when step.
Further, the appraisal procedure further includes that the drive efficiency of compressor electric motor is assessed by following formula:
η=P1/P0, wherein η is drive efficiency, and P1 is the compressor horsepower under dynamometer machine load, and P0 is that compressor is practical Input power.
Further, the compressor actually enters power and is obtained by following:
Measure the driving circuit input voltage and electric current of compressor;
According to driving circuit input voltage and input current, compressor is calculated and actually enters power.
On the other hand, the present invention provides a kind of test macros of electric scroll compressor motor torque, including electronic whirlpool It is defeated to revolve compressor, dynamometer machine, PC machine, motor performance test instrument and electrical parameter measuring instrument, the motor of the electric scroll compressor Shaft is connect with dynamometer machine, and the motor performance test instrument is connect with PC machine and dynamometer machine respectively, the motor performance test instrument For controlling the loading capacity of dynamometer machine, the electrical parameter measuring instrument is connect with electric scroll compressor and PC machine respectively, the electricity Parameter measurement instrument is used to measure the driving circuit input voltage and electric current of electric scroll compressor.
Further, the dynamometer machine is magnetic powder dynamometer machine.
Further, the motor performance test instrument is connect by RS-232 serial communication line with PC machine and dynamometer machine, institute It states electrical parameter measuring instrument to connect by RS-232 serial communication line with PC machine, the PC machine and electric scroll compressor CAN communication.
Further, the electric scroll compressor is reliably connected by transmission shaft and dynamometer machine, is rotated synchronously with realizing.
Technical solution bring provided by the invention has the beneficial effect that:
A. testing system platform structure it is simple, can accurate simulation compressor band carry operating condition;
B. appraisal procedure be capable of accurate evaluation compressor motor torque it is whether up to standard, improve compressor real work in Reliability.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other Attached drawing.
Fig. 1 is the process of the appraisal procedure of the first electric scroll compressor motor torque provided in an embodiment of the present invention Figure;
Fig. 2 is the process of the appraisal procedure of second of electric scroll compressor motor torque provided in an embodiment of the present invention Figure;
Fig. 3 is the structural block diagram of the test macro of electric scroll compressor motor torque provided in an embodiment of the present invention.
Wherein, appended drawing reference includes: 1- electric scroll compressor, 2- dynamometer machine, 3-PC machine, 4- motor performance test instrument, 5- electrical parameter measuring instrument.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work It encloses.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, " Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way Data be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein can in addition to illustrating herein or Sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover Covering non-exclusive includes to be not necessarily limited to for example, containing the process, method of a series of steps or units, device, product or equipment Step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, product Or other step or units that equipment is intrinsic.
In a preferred embodiment of the invention, a kind of assessment side of electric scroll compressor motor torque is provided Method, referring to Fig. 1, comprising:
S11, electric scroll compressor rotor and dynamometer machine are reliably connected, are rotated synchronously with realizing.
S12, the control dynamometer machine load preset loading capacity.
Specifically, the ascending adjusting of the loading capacity of the dynamometer machine, for example, preset loading capacity can be 5N.m.
S13, the revolving speed that compressor electric motor is adjusted in the preset range of speeds.
PC machine controls compressor rotation in the corresponding range of speeds of product requires, for example, 0-4000rpm range.
S14, judge in the preset range of speeds, whether the compressor electric motor step-out phenomenon occurs;
If not occurring step-out phenomenon, S15 is executed, if there is step-out phenomenon, executes S16 and S17.
S15, the loading capacity for increasing the dynamometer machine, and repeat S13 and S14.
Even all do not occur step-out phenomenon in the entire 0-4000rpm range of speeds, then increase dynamometer machine loading capacity, repeats Above-mentioned 0-4000rpm measurement of rotating speed, until until step-out occurs in some revolving speed point.
S16, current dynamometer machine loading capacity and compressor electric motor revolving speed are recorded.
If S17, the dynamometer machine that the actual torque of compressor in actual work is less than record under the motor speed of record add Carrying capacity then assesses the electric scroll compressor motor torque qualification, otherwise unqualified.
Wherein, the actual torque of compressor in actual work under the motor speed of record passes through following acquisition:
Under standard condition, test condition is the measurement compression in motor speed (revolving speed when step-out occurs) The driving circuit input voltage and electric current of machine, further obtain compressor actually enter power (power equal to driving circuit input Voltage is multiplied by electric current);
According to the following formula, actual torque is obtained:
T=9550 × P/n, wherein T is actual torque to be asked, and P is that compressor actually enters power, and n turns for motor Speed.If the actual torque acquired is less than the dynamometer machine loading capacity for occurring to record when step-out, the electric scroll compressor is assessed Motor torque is qualified, otherwise unqualified.
In another embodiment of the present invention, the assessment side of second of electric scroll compressor motor torque is provided Method, referring to fig. 2, including following below scheme:
S21, electric scroll compressor rotor is connect with dynamometer machine, is rotated synchronously with realizing.
S22, the control dynamometer machine load preset loading capacity.
Specifically, the ascending adjusting of the loading capacity of the dynamometer machine, for example, preset loading capacity can be 5N.m.
S23, the revolving speed that compressor electric motor is adjusted in the preset range of speeds.
PC machine controls compressor rotation in the corresponding range of speeds of product requires, for example, 0-4000rpm range.
S24, judge in the preset range of speeds, whether the compressor electric motor step-out phenomenon occurs.
If not occurring step-out phenomenon, S25 is executed;If there is step-out phenomenon, S26 and S27 are executed.
S25, the loading capacity for increasing the dynamometer machine, and repeat S23 and S24.
Even all do not occur step-out phenomenon in the entire 0-4000rpm range of speeds, then increase dynamometer machine loading capacity, repeats Above-mentioned 0-4000rpm measurement of rotating speed, until until step-out occurs in some revolving speed point.
S26, current dynamometer machine loading capacity and compressor electric motor revolving speed are recorded.
S27, judge whether corresponding compressor horsepower is greater than the rated power of compressor when step-out, if so, assessing institute It is qualified to state electric scroll compressor motor torque, it is otherwise unqualified.
Specifically, corresponding compressor horsepower is obtained by following formula when the step-out:
T=9550 × P/n, wherein T is the dynamometer machine loading capacity of record, and n is the compressor electric motor revolving speed of record, and P is to lose Corresponding compressor horsepower when step.The compressor horsepower being calculated is said compared with the rated power of compressor, if the former is big In the latter, that is, show to run in rated power, compressor is all not in step-out, i.e. the motor torque of assessment compressor closes Lattice, it is otherwise unqualified.
In supplement embodiment of the invention, the appraisal procedure further includes assessing compressor electric motor by following formula Drive efficiency:
η=P1/P0, wherein η is drive efficiency, and P1 is the compressor horsepower under dynamometer machine load, and P0 is that compressor is practical Input power.
The specific appraisal procedure of the drive efficiency is, under rated speed and certain dynamometer machine locked-in torque In the case of, dynamometer machine load power, as P1 are obtained according to formula T=9550 × P/n, and compressor actually enters power P 0 and is The driving circuit input voltage of compressor and the product of electric current are measured under the conditions of same test.
Drive efficiency is higher, then assessment result is better, and generally the drive efficiency under rated speed is not lower than 85%.
In another embodiment of the present invention, a kind of test system of electric scroll compressor motor torque is additionally provided System, referring to Fig. 3, the test macro includes electric scroll compressor 1, dynamometer machine 2 (preferably magnetic powder dynamometer machine), PC machine 3, electricity Machine ability meter 4 and electrical parameter measuring instrument 5, the electric scroll compressor 1, which is realized by transmission shaft with dynamometer machine 2, reliably to be connected It connects (rotate synchronously), the motor performance test instrument 4 is connect with PC machine 3 and dynamometer machine 2 respectively, the motor performance test instrument 4 for controlling the loading capacity of dynamometer machine 2, and the electrical parameter measuring instrument 5 is connect with electric scroll compressor 1 and PC machine 3 respectively, institute Electrical parameter measuring instrument 5 is stated for measuring the driving circuit input voltage and electric current of electric scroll compressor 1.
Connection type is as follows: the motor performance test instrument is connected by RS-232 serial communication line and PC machine and dynamometer machine It connects, the electrical parameter measuring instrument is connect by RS-232 serial communication line with PC machine, the PC machine and electric scroll compressor CAN Communication.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.

Claims (10)

1. a kind of appraisal procedure of electric scroll compressor motor torque characterized by comprising
Electric scroll compressor rotor is connect with dynamometer machine, is rotated synchronously with realizing;
It controls the dynamometer machine and loads preset loading capacity, and adjust the revolving speed of compressor electric motor in the preset range of speeds;
Judge in the preset range of speeds, whether the compressor electric motor step-out phenomenon occurs;
If not occurring step-out phenomenon, the loading capacity of the dynamometer machine is increased, and adjusts the revolving speed of compressor electric motor, until compression There is step-out phenomenon in electromechanical machine;
If there is step-out phenomenon, current dynamometer machine loading capacity and compressor electric motor revolving speed are recorded;
If the actual torque of compressor in actual work is less than the dynamometer machine loading capacity of record under the motor speed of record, comment It is qualified to estimate the electric scroll compressor motor torque, it is otherwise unqualified.
2. appraisal procedure according to claim 1, which is characterized in that the compressor under the motor speed of record is practical Actual torque when work passes through following acquisition:
Under standard condition, tests the compressor in the motor speed and actually enter power;
According to the following formula, actual torque is obtained:
T=9550 × P/n, wherein T is torque, and P is that compressor actually enters power, and n is motor speed.
3. a kind of appraisal procedure of electric scroll compressor motor torque characterized by comprising
Electric scroll compressor rotor is connect with dynamometer machine, is rotated synchronously with realizing;
It controls the dynamometer machine and loads preset loading capacity, and adjust the revolving speed of compressor electric motor in the preset range of speeds;
Judge in the preset range of speeds, whether the compressor electric motor step-out phenomenon occurs;
If not occurring step-out phenomenon, the loading capacity of the dynamometer machine is increased, and adjusts the revolving speed of compressor electric motor, until compression There is step-out phenomenon in electromechanical machine;
If there is step-out phenomenon, current dynamometer machine loading capacity and compressor electric motor revolving speed are recorded;
Judge whether corresponding compressor horsepower is greater than the rated power of compressor when step-out, if so, assessing the electronic whirlpool It is qualified to revolve compressor electric motor torque, it is otherwise unqualified.
4. appraisal procedure according to claim 3, which is characterized in that when the step-out corresponding compressor horsepower by with Lower formula obtains:
T=9550 × P/n, wherein T is the dynamometer machine loading capacity of record, and n is the compressor electric motor revolving speed of record, when P is step-out Corresponding compressor horsepower.
5. appraisal procedure according to claim 1 or 3, which is characterized in that further include assessing compressor by following formula The drive efficiency of motor:
η=P1/P0, wherein η is drive efficiency, and P1 is the compressor horsepower under dynamometer machine load, and P0 actually enters for compressor Power.
6. appraisal procedure according to claim 5, which is characterized in that the compressor actually enters power and obtained by following It arrives:
Measure the driving circuit input voltage and electric current of compressor;
According to driving circuit input voltage and input current, compressor is calculated and actually enters power.
7. a kind of test macro of electric scroll compressor motor torque, which is characterized in that including electric scroll compressor, measurement of power Machine, PC machine, motor performance test instrument and electrical parameter measuring instrument, the motor output shaft and dynamometer machine of the electric scroll compressor connect It connects, the motor performance test instrument is connect with PC machine and dynamometer machine respectively, and the motor performance test instrument is for controlling dynamometer machine Loading capacity, the electrical parameter measuring instrument connect with electric scroll compressor and PC machine respectively, and the electrical parameter measuring instrument is used for Measure the driving circuit input voltage and electric current of electric scroll compressor.
8. test macro according to claim 7, which is characterized in that the dynamometer machine is magnetic powder dynamometer machine.
9. test macro according to claim 7, which is characterized in that the motor performance test instrument passes through RS-232 serial ports Communication line is connect with PC machine and dynamometer machine, and the electrical parameter measuring instrument is connect by RS-232 serial communication line with PC machine, described PC machine and electric scroll compressor CAN communication.
10. test macro according to claim 7, which is characterized in that the electric scroll compressor by transmission shaft with Dynamometer machine is reliably connected, and is rotated synchronously with realizing.
CN201810818363.4A 2018-07-24 2018-07-24 A kind of appraisal procedure and test macro of electric scroll compressor motor torque CN109060213A (en)

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