Global load cycle-based multi-objective motor efficiency optimizing design method
A technology of load cycle and optimized design, applied in the direction of design optimization/simulation, calculation, electrical digital data processing, etc., can solve the problems of insufficient output capacity of motor materials and waste of motor materials, so as to improve the efficiency of the motor and reduce the size of the motor. Volume, the effect of reducing manufacturing cost
Active Publication Date: 2018-05-29
LIYANG RES INST OF SOUTHEAST UNIV +1
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Problems solved by technology
The traditional optimization design algorithm cannot guarantee that the motor will still maintain high efficiency operation after deviating from the rated operating point, or the motor will not give full play to the output capacity of the motor material when the motor deviates from the rated operating point, resulting in waste of motor materials
On the other hand, traditional optimization algorithms usually increase the manufacturing cost of the motor while improving the efficiency of the motor. When the cost is limited, it is difficult for the traditional optimization algorithm to make a good trade-off between performance and cost.
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[0026] This specific embodiment discloses a multi-objective motor efficiency optimization design method based on the overall load cycle, such as figure 1 shown, including the following steps:
[0027] S1: Determine the load cycle characteristics during the use of the motor, establish the load function equation and perform discretization: According to the typical cycle of the load driven by the motor, obtain the required output torque T of the motor load and speed n, and discretize to get the torque T on each discrete interval load (i) and speed n(i), where i is the serial number of the i-th discrete interval; in each discretized i-th interval, the load torque and speed of the motor are kept constant. get as image 3 The duty cycle model shown.
[0028] S2: Establish the objective function equation, as shown in formula (1):
[0029]
[0030] In formula (1), x j =[q 1 ,q 2 ,q 3 ,...,q z ] is to optimize the design parameters, that is, the manufacturing parameters of ...
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The invention discloses a global load cycle-based multi-objective motor efficiency optimizing design method. According to the method, a motor is designed by adopting a load cycle characteristic-basedmulti-objective optimization algorithm; the output potential of a motor material can be fully explored by utilizing the distribution characteristics on the speed and the load torque in the load cycle;the effect of lowest required motor material cost is achieved under the circumstance of consuming the same energy in one load cycle; and therefore, the manufacturing cost of the motor is effectivelyreduced.
Description
technical field [0001] The invention relates to a motor efficiency optimization design method, in particular to a multi-objective motor efficiency optimization design method based on the overall load cycle. Background technique [0002] Efficiency is an important measure of motor performance today, and how to design high-efficiency motors has become a current research hotspot. Many researchers have conducted research on efficiency optimization design and achieved some results, but these research results are all aimed at optimizing the efficiency of the motor at the rated operating point or a single operating point. However, in practical applications, the operating point of the motor in many applications will change. Usually, this change is regular, and it can be directly modeled by function description or modeled by statistical rule induction. The traditional optimization design algorithm cannot guarantee that the motor can still maintain high efficiency operation after dev...
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IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 林明耀孔永乐伟伍锡坤
Owner LIYANG RES INST OF SOUTHEAST UNIV