Title:
ELECTRIC MOTOR CONTROLLER SAFETY STATE SWITCHING CIRCUIT AND APPARATUS, AND CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2022/222711
Kind Code:
A1
Abstract:
An electric motor controller safety state switching circuit, comprising: a waveform conversion circuit (100), which receives an initial waveform frequency signal outputted by an electric motor, and converts the initial waveform frequency signal into a square wave frequency signal; a frequency voltage conversion circuit (200), which converts the square wave frequency signal into a current state voltage signal which is capable of driving a bridge arm of an electric motor controller; a determination circuit (300), which determines a safety state according to the current state voltage signal, and generates a corresponding enabling electrical signal according to the determination result; and a drive circuit (400), which according to the enabling electric signal, controls the turning on and off of the bridge arm of the electric motor controller so as to perform safety state switching. Also disclosed are an electric motor controller safety state switching apparatus and a control method for the electric motor controller safety state switching circuit.
Inventors:
QIN XIUJING (CN)
Application Number:
PCT/CN2022/083770
Publication Date:
October 27, 2022
Filing Date:
March 29, 2022
Export Citation:
Assignee:
SUZHOU INOSA UNITED POWER SYSTEM CO LTD (CN)
International Classes:
B60L15/00; H02P27/00; H02P27/04; H02P27/08
Foreign References:
| CN113085566A | 2021-07-09 | |||
| CN112468057A | 2021-03-09 | |||
| CN112060914A | 2020-12-11 | |||
| US20060006845A1 | 2006-01-12 |
Attorney, Agent or Firm:
CENFO INTELLECTUAL PROPERTY AGENCY (CN)
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