Full
Outline
Under the indirect vector control, the output torque from an induction motor is easily affected by changes in the rotor time constant. To improve the torque control accuracy of the motor, an online correction algorithm for the rotor time constant is necessary. However, the existing parameter correction algorithms mostly rely on accurate mathematical models of the motor, which are susceptible to model parameter errors and other non-ideal factors, making it difficult to ensure the accuracy of output torque. To address these issues, based on the traditional reactive power-based rotor time constant correction algorithm, the calculation errors of reactive power in actual systems is considered, and a method for calibrating and compensating for reactive power calculation errors is proposed. This method can reduce the output torque error of induction motors from 4% to less than 1%, and its effectiveness was verified by experimental results.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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