Advanced Gate Drive for the SNS High Voltage Converter Modulator

Conference · Thu May 07 04:00:00 EDT 2009

OSTI ID:953004

Nguyen, M N; Burkhart, C; Kemp, M A; Anderson, D E

SLAC National Accelerator Laboratory is developing a next generation H-bridge switch plate [1], a critical component of the SNS High Voltage Converter Modulator [2]. As part of that effort, a new IGBT gate driver has been developed. The drivers are an integral part of the switch plate, which are essential to ensuring fault-tolerant, high-performance operation of the modulator. The redesigned driver improves upon the existing gate drive in several ways. The new gate driver has improved fault detection and suppression capabilities; suppression of shoot-through and over-voltage conditions, monitoring of dI/dt and Vce(sat) for fast over-current detection and suppression, and redundant power isolation are some of the added features. In addition, triggering insertion delay is reduced by a factor of four compared to the existing driver. This paper details the design and performance of the new IGBT gate driver. A simplified schematic and description of the construction are included. The operation of the fast over-current detection circuits, active IGBT over-voltage protection circuit, shoot-through prevention circuitry, and control power isolation breakdown detection circuit are discussed.

• Research Organization: Stanford Linear Accelerator Center (SLAC)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 953004
• Report Number(s): SLAC-PUB-13581
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
Accelerators
Experiment-HEP
ACCSYS
ENG
BREAKDOWN
CONSTRUCTION
DESIGN
DETECTION
FERMILAB ACCELERATOR
MONITORING
PERFORMANCE
PLATES
STANFORD LINEAR ACCELERATOR CENTER