Motor braking system using multi-phase reversal mechanism
AssigneeAnpec Electronics Corporation
InventorMING-JUNG TSAI
Life of this patent
Estimating the term…
Abstract
A motor braking system using a multi-phase reversal mechanism is provided. In a motor driving mode, the motor braking system, according to one or more of voltage signals respectively of three phases of a three-phase motor, determines which one of the three phases of the three-phase motor is a phase from which a current flows as a first driving phase, and selects another of the three phases of the three-phase motor as a second driving phase. In a motor braking mode, the motor braking system changes a driving operation performed on the three-phase motor such that a reverse current flows from the second driving phase to the first driving phase.
Claims20
A motor braking system using a multi-phase reversal mechanism, which is applicable to a three-phase motor, the motor braking system comprising:
- a motor voltage detecting circuit connected to the three-phase motor;
- a driver circuit connected to the motor voltage detecting circuit and configured to output a driving signal;
- and
- an output stage circuit connected to the driver circuit and the three-phase motor, and configured to drive the three-phase motor according to the driving signal;
- wherein, in a motor driving mode, the motor voltage detecting circuit detects voltage signals of one or more of three phases of the three-phase motor to output a voltage detected signal;
- wherein, in the motor driving mode, the driver circuit, according to the voltage detected signal, determines which one of the three phases of the three-phase motor is a phase from which a current flows as a first driving phase, and selects another of the three phases of the three-phase motor as a second driving phase;
- wherein, in a motor braking mode, the driver circuit changes the driving signal such that a reverse current flows from the second driving phase to the first driving phase.
A motor braking system using a multi-phase reversal mechanism, which is applicable to a three-phase motor, the motor braking system comprising:
- a rotor position detecting circuit disposed on the three-phase motor;
- a driver circuit connected to the rotor position detecting circuit and configured to output a driving signal;
- and
- an output stage circuit connected to the driver circuit and the three-phase motor, and configured to drive the three-phase motor according to the driving signal;
- wherein, in a motor driving mode, the rotor position detecting circuit detects a position of a rotor of the three-phase motor to output a commutation signal, and the driver circuit drives the output stage circuit according to the commutation signal;
- wherein, in the motor driving mode, the driver circuit, according to the commutation signal, determines which one of three phases of the three-phase motor is a phase from which a current flows as a first driving phase, and selects another of the three phases of the three-phase motor as a second driving phase;
- wherein, in a motor braking mode, the driver circuit changes the driving signal such that a reverse current flows from the second driving phase to the first driving phase.
Dependencies are inferred from the claim text.