Affiliation of Author(s):自动化学院
Journal:THIRTY-THIRD ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2018)
Key Words:harmonics injection bus capacitance CRM boost PFC on-time compensation EN61000-3-2 Class D
Abstract:Based on the energy-ripple perspective, this paper discusses the optimum 3rd and 5th order harmonic injection to minimize bus capacitance of CRM boost PFC converters. Within EN61000-3-2 Class D limits, 34% 3rd and 19% 5th order harmonics injection can theoretically achieve the maximum bus capacitance reduction of 36.1% for wide input application (100 similar to 240Vac). However, the conventional on-time control ignores the deviation effect of CRM operation, which introduces the exceeding 3rd and 5th order injected harmonics than EN61000-3-2 Class D limits. In order to eliminate the deviation effect, a novel on-time compensation method is proposed to realize accurate harmonics injection. The experimental results from an 120W prototype show that the maximum bus capacitance reduction of 33% is achieved in practice meeting EN61000-3-2 Class D limits within 100 similar to 240Vac input range.
Page Number:2009-2014
ISSN No.:1048-2334
Translation or Not:no
Date of Publication:2018-01-01
Included Journals:ISTP
Date of Publication:2018-01-01
MOBILE Version
