TY - GEN
T1 - Single-phase stator control of interior permanent magnet machines with MTPA operation
AU - Lee, Kahyun
AU - Ha, Jung Ik
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/10/27
Y1 - 2015/10/27
N2 - This paper proposes a new interior permanent magnet machine (IPMM) drive system with low cost and simple configuration. The proposed system consists of a two-phase IPMM, a single-phase H-bridge inverter, and dc link. Between two-phase stator windings, a main winding is supplied by the H-bridge inverter for adjustable speed drives while an auxiliary winding is short-circuited. This structure makes the system operate in a wider range of speed than most single-phase drive systems. Furthermore, the system uses relatively fewer windings and semiconductor devices than a balanced three-phase IPMM system, yet its torque capability in high speed range has not reduced. This paper proves that the single-phase inverter is advantageous over the three-phase one for producing larger fundamental machine phase voltage in the overmodulation range. A square-wave mode voltage modulation scheme is applied to maximize the fundamental component. With an equivalent model of the proposed IPMM, its torque characteristics, operating range, and performance are analyzed and compared to those of conventional IPMM drive systems. In addition, a speed control algorithm aimed at minimizing the copper losses is proposed for higher motor efficiency. The feasibility of the proposed system and control method is verified by experiments under various operating conditions.
AB - This paper proposes a new interior permanent magnet machine (IPMM) drive system with low cost and simple configuration. The proposed system consists of a two-phase IPMM, a single-phase H-bridge inverter, and dc link. Between two-phase stator windings, a main winding is supplied by the H-bridge inverter for adjustable speed drives while an auxiliary winding is short-circuited. This structure makes the system operate in a wider range of speed than most single-phase drive systems. Furthermore, the system uses relatively fewer windings and semiconductor devices than a balanced three-phase IPMM system, yet its torque capability in high speed range has not reduced. This paper proves that the single-phase inverter is advantageous over the three-phase one for producing larger fundamental machine phase voltage in the overmodulation range. A square-wave mode voltage modulation scheme is applied to maximize the fundamental component. With an equivalent model of the proposed IPMM, its torque characteristics, operating range, and performance are analyzed and compared to those of conventional IPMM drive systems. In addition, a speed control algorithm aimed at minimizing the copper losses is proposed for higher motor efficiency. The feasibility of the proposed system and control method is verified by experiments under various operating conditions.
KW - interior permanent magnet machine
KW - modeling
KW - MTPA
KW - single-phase motor drives
KW - square-wave modulation
UR - http://www.scopus.com/inward/record.url?scp=84963623567&partnerID=8YFLogxK
U2 - 10.1109/ECCE.2015.7310400
DO - 10.1109/ECCE.2015.7310400
M3 - Conference contribution
AN - SCOPUS:84963623567
T3 - 2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015
SP - 5263
EP - 5270
BT - 2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 7th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2015
Y2 - 20 September 2015 through 24 September 2015
ER -