Current sampling device

Current sampling device

The invention relates to a current sampling device, which comprises a control module, a phase shift module, a driving module, a three-phase full-bridge inverter, a three-phase motor and a current sampling module, and is characterized in that the control module is used for outputting a voltage signal...

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Hauptverfasser: BAO XUHE, ZHANG WENRONG, CONG FENGLONG, LU JIAN
Format: Patent
Sprache:chi ; eng
Schlagworte:
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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creator BAO XUHE
ZHANG WENRONG
CONG FENGLONG
LU JIAN
description The invention relates to a current sampling device, which comprises a control module, a phase shift module, a driving module, a three-phase full-bridge inverter, a three-phase motor and a current sampling module, and is characterized in that the control module is used for outputting a voltage signal according to a preset current and a sampling current; the phase shift module is used for generating a pulse width modulation (PWM) signal according to the voltage signal; the driving module is used for generating a switch control signal according to the PWM signal; the three-phase full-bridge inverter is used for receiving the switching control signal and changing the switching state of each transistor according to the switching control signal; the three-phase motor is connected to the three-phase full-bridge inverter; and the current sampling module is connected to the bus of the three-phase motor and the control module so as to sample the bus current to obtain the sampling current. Through the device, the proble
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subjects MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
title Current sampling device
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