An excitation system for a passenger car electrically excited synchronous motor

CN224401420UActive Publication Date: 2026-06-23HUNAN CRRC TIMES ELECTRIC DRIVE TECHNOLOGY CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202521241108.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-17
Publication Date
2026-06-23
Estimated Expiration
2035-06-17

AI Technical Summary

Technical Problem

Existing electrically excited synchronous motor drivers have complex circuit structures, high hardware costs, and low space utilization, making them difficult to apply to the limited space inside the motor controller.

Method used

The system employs an H-bridge main circuit module, a driver module, a processor module, and an isolated power supply circuit. Bidirectional current regulation is achieved through complementary switching, reducing switching losses and enhancing system reliability. Hardware-level protection is implemented through global control of the enable signal.

Benefits of technology

It improves the space utilization of the motor controller, reduces production costs, enhances efficiency and system reliability under high-speed conditions, and achieves hardware-level protection.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224401420U_ABST
    Figure CN224401420U_ABST
Patent Text Reader

Abstract

This utility model discloses an excitation system for an electrically excited synchronous motor in a passenger vehicle, comprising: an H-bridge main circuit module, including two sets of bridge arms, each set including an upper bridge arm and a lower bridge arm, both the upper and lower bridge arms including power semiconductor devices and diodes connected in anti-parallel; a drive module, including two sets of half-bridge drive circuits, each half-bridge drive circuit being connected to one set of bridge arms respectively, the half-bridge drive circuit including a drive chip and upper and lower bridge arm drive circuits, the primary side of the drive chip having a drive signal input terminal and an enable signal input terminal, the secondary side being connected to the input terminals of the upper and lower bridge arms respectively through the upper and lower bridge arm drive circuits; and a processor module, having drive signal and enable signal output terminals, the drive signal output terminal being connected to the drive signal input terminal, and the enable signal output terminal being connected to the enable signal input terminal. The excitation system for an electrically excited synchronous motor in a passenger vehicle of this utility model has the advantages of high integration, simple circuit structure, and low cost.
Need to check novelty before this filing date? Find Prior Art