Inventor
ZHAO QIHUA
CA3 patents
Patents
3 patentsUS6861897B1Mar 1, 2005
Active filter for multi-phase AC power system
HONEYWELL INT INC26 citations89
US7012392B2Mar 14, 2006
Multi-stage dynamic braking resistor network
HONEYWELL INT INC36 citations88
US6469485B2Oct 22, 2002
Active filter and method for suppressing current harmonics
HONEYWELL INT INC11 citations70