US 12,525,908 B2 · Control method, control apparatus and control system for eletric motor, and computer-readable storage medium and air conditioner

Abstract

A control method, control apparatus and control system for an electric motor, and a computer-readable storage medium are provided. The control method for an electric motor includes: acquiring an initial rotation speed and an initial rotation direction of an electric motor; determining a target start mode for the electric motor according to the initial rotation speed and the initial rotation direction; and according to the target start mode, controlling the electric motor to start. A target start mode, which most conforms to an initial rotation speed and an initial rotation speed direction of an electric motor, can be determined from a plurality of preset start modes, so as to control the electric motor to start.

Claims18

Dependent claims

A control method for an electric motor, comprising:

acquiring an initial rotation speed and an initial rotation speed direction of the electric motor;
determining a target start mode for the electric motor according to the initial rotation speed and the initial rotation speed direction;
determining a scheme of switching a rotation speed control state corresponding to the target start mode;
and
controlling the electric motor to start in accordance with the scheme of switching the rotation speed control state.

2 more elements

A control apparatus for an electric motor, comprising:

an acquiring module, configured to acquire an initial rotation speed and an initial rotation speed direction of the electric motor;
a determining module, configured to:
determine a target start mode for the electric motor according to the initial rotation speed and the initial rotation speed direction;
and
determine a scheme of switching a rotation speed control state corresponding to the target start mode;
and
a control module, configured to control the electric motor to start in accordance with the scheme of switching the rotation speed control state.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

18/563,974Filed 3 Jan 2023

Priority

CN 202210055709.618 Jan 2022

Published

US 2024/0258942 A11 Aug 2024

Granted

13 Jan 2026

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

H02P 21/34
Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation: arrangements for starting
H02P 1/029
Details of starting control: restarting, e.g. after power failure
H02P 6/182
Without separate position detecting elements: using back-emf in windings
H02P 6/21
Arrangements for starting: open loop start

Control method, control apparatus and control system for eletric motor, and computer-readable storage medium and air conditioner

Life of this patent

Control method, control apparatus and control system for eletric motor, and computer-readable storage medium and air conditioner

Life of this patent

Abstract

Claims18