Parallel EPLL-based pulsating high frequency signal injection method signal extraction system and strategy
A pulse-vibrated high-frequency signal and signal extraction technology, applied in control systems, vector control systems, control generators, etc., can solve problems such as amplitude errors, system complexity, and phase offsets
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[0076] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only for explaining the present invention, and are not intended to limit the scope of the present invention.
[0077] The invention discloses a signal extraction system based on a parallel EPLL pulse vibration high-frequency signal injection method, figure 1 It is a system structure block diagram of the present invention, including: power supply circuit, rectifier, inverter, motor, motor load module, motor current acquisition module, Clark transformation module, Park transformation module, parallel EPLL signal analysis module, high-frequency signal PI module, Integral processing module, direct axis positive direction judgment module, angle correction module, speed error module, speed PI module, d-axis current error module, d-axis current PI module, q-axis current error module, q-axis current PI module, high-frequency signal I...
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