Full
Outline
Single-phase phase-locked loop (PLL) is widely used in fields such as power systems. However, the traditional single-phase PLL algorithms face challenges such as high computational complexity and complicated calculation methods. Moreover, their performance is affected in scenarios where the frequency of the input signal undergoes significant changes. A single-phase phase-locked loop based on sinusoidal tracking nonlinear control is proposed to address these issues. Using a Lyapunov stability-based design method, global convergence is achieved when the input signal frequency changes. A simulation model of this new PLL is constructed in PSIM and the application effects of the proposed method are compared with the conventional single-phase PLL based on the second-order generalized integrator, an experimental test is completed using the TMS320F28069 digital signal processor. Simulations and experiments indicate that the algorithm, with its simplicity and fast response, can improve the accuracy degradation issue occurring in traditional second-order generalized integrators during abrupt frequency changes.
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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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