Advanced Static Over-modulation Scheme using Offset Voltages Injection for Simple Implementation and Less Harmonics

作者：Lee Dong Myung^*

来源：Journal of Electrical Engineering and Technology, 2015, 10(1): 138-145.

DOI：10.5370/JEET.2015.10.1.138

• Static overmodulation scheme
• 2-level inverter
• Offset voltage injection
• Total harmonic distortion

In this paper, a novel static overmodulation scheme (OVM) for space-vector PWM (SVPWM) is proposed. The proposed static OVM scheme uses the concept of adding offset voltages in linear region as well as overmodulation region to fully utilize DC-link voltage. By employing zero sequence voltage injection, the proposed scheme reduces procedures for achieving SVPWM such as complicated gating time calculation. In addition, this paper proposes a stepwise discontinuous angle movement in high modulation region in order to reduce Total Harmonic Distortion (THD). The validity of the proposed scheme is verified through theoretical analysis and experimental results.

• 出版日期2015-1