MOTOR DRIVER

Organization Name

Inventor(s)

MOTOR DRIVER - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240283384 titled 'MOTOR DRIVER

The abstract describes a patent application for a motor driver system that includes an inverter, a multiphase pre-driver circuit, a controller, and motor relays. The inverter converts direct current power from a battery to power a multiphase motor, while the pre-driver circuit drives the switching elements of the inverter. The controller commands the pre-driver circuit to control electrical conduction to the motor, and the motor relays interrupt current flow during an off state. The pre-driver circuit includes a charge pump that activates the motor relays, independent of the controller's instructions.

The motor driver system includes an inverter, pre-driver circuit, controller, and motor relays.
The inverter converts DC power from a battery to power a multiphase motor.
The pre-driver circuit controls the switching elements of the inverter.
The controller commands the pre-driver circuit to control electrical conduction to the motor.
Motor relays interrupt current flow during an off state and are activated by a charge pump in the pre-driver circuit.

Potential Applications: - Electric vehicles - Industrial machinery - Robotics

Problems Solved: - Efficient power conversion - Precise motor control - Reliable current interruption

Benefits: - Improved energy efficiency - Enhanced motor performance - Increased system reliability

Commercial Applications: - Automotive industry for electric vehicles - Manufacturing sector for industrial machinery - Robotics industry for precise motion control

Questions about motor driver technology: 1. How does the motor driver system improve energy efficiency in electric vehicles? 2. What are the key advantages of using motor relays in the system?

Original Abstract Submitted

a motor driver includes an inverter, a multiphase pre-driver circuit, a controller and motor relays. the inverter includes pairs of an upper-arm switching element and a lower-arm switching element being connected in series between a ground line and a power supply line, and supplies power to a multiphase motor by converting direct current power of a battery. the multiphase pre-driver circuit drives the upper-arm and lower-arm switching elements. the controller commands the multiphase pre-driver circuit to drive the switching elements, and controls electrical conduction from the inverter to the multiphase motor. the motor relays interrupt a current flowing from the multiphase motor to the inverter during an off state. the multiphase pre-driver circuit includes a charge pump. the motor relays are turned on by an output voltage of the charge pump during an operation of the charge pump in a situation apart from that the controller provides an instruction.