18651235. MOTOR DRIVER simplified abstract (DENSO CORPORATION)
Contents
MOTOR DRIVER
Organization Name
Inventor(s)
KOKI Nagura of Kariya-city (JP)
HIDEKI Kabune of Kariya-city (JP)
MOTOR DRIVER - A simplified explanation of the abstract
This abstract first appeared for US patent application 18651235 titled 'MOTOR DRIVER
The patent application describes 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 into power for a multiphase motor by using pairs of upper-arm and lower-arm switching elements.
- The multiphase pre-driver circuit controls the switching elements to drive the motor.
- The controller commands the pre-driver circuit to control electrical conduction from the inverter to the motor.
- The motor relays interrupt the current flow from the motor to the inverter during an off state.
- The pre-driver circuit includes a charge pump that activates the motor relays in certain situations.
Potential Applications: - Electric vehicles - Industrial machinery - Robotics
Problems Solved: - Efficient power conversion for multiphase motors - Precise control of motor operation
Benefits: - Improved energy efficiency - Enhanced motor performance - Increased reliability
Commercial Applications: Title: "Advanced Motor Driver Technology for Electric Vehicles and Industrial Machinery" This technology can be used in electric vehicles, industrial machinery, and robotics, offering improved performance and efficiency in various applications.
Questions about the technology: 1. How does the motor driver system improve energy efficiency in electric vehicles? 2. What are the key advantages of using the multiphase pre-driver circuit in industrial machinery applications?
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.
