Full
Outline
The traditional electromagnetic bearing power amplifier usually adopts the hard switching circuit topology with simple circuit structure and high practicability, but it has the problems of large switching loss and easy overheating damage of the switch tube, which limits the use scenarios at higher operating frequencies, and will produce serious electromagnetic noise at higher bus voltage and higher switching frequency. Aiming at the defects of hard switching power amplifier in operation, a soft switching power amplifier suitable for electromagnetic bearing system is proposed, and the working principle of the circuit topology is analyzed in detail. Through the comparative analysis of simulation and experiment, the results show that the topology can reduce the switching loss, reduce the electromagnetic noise in the high frequency working state and improve the working efficiency of the system under the condition of meeting the basic performance requirements of the power amplifier.
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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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