Voltage Vector Directional Control for IPMSM Based on MTPA Strategy

Abstract

Space vector pulse width modulation (SVPWM) is used in motor control because of its high dynamic response and flexible control. Maximum torque per ampere (MTPA) strategy has become the most commonly used choice for internal permanent magnet synchronous motor (IPMSM). However, complicated coordinate transformations are required in the usual SVPWM algorithm and the performance of the MTPA algorithm can be affected by the parameters variation. This paper proposes a voltage vector directional control (VVDC) method based on the MTPA strategy. The inverse Park transformation is avoided in the proposed control scheme. And the proposed algorithm not only is briefer and clearer in the sector judgment process but also has lesser calculation during the duty cycle generation. In order to realize the MTPA strategy, two voltage feedback closed loops are designed to compensate for the d-axis and q-axis currents. A simple and effective multi-parameter identification method is also presented to solve the parameters variation problem. The effectiveness of the proposed method is verified by simulation and experiments.INDEX TERMS IPMSM, MTPA, motor parameter identification, voltage vector control.

MTPA Speed Control for IPMSM Drives Without Current Sensing

“…This significantly reduces the control scheme's complexity and the time required for tuning [21]. Heretofore, the few developed direct voltage control methods still need current sensors [22], [23], inner stabilizing loops [24], or their control laws are derived based on long-winded iterative calculations or numerical approximation [25]- [27]. Considering the transient states, a direct voltage MTPA without current sensing is implemented in [25] to enhance the control system's performance.…”

A Parallel Topology Based Power-Stage PMSM Emulator With Accurate Ripple Current Reproduced

“…Nowadays, with the rapid development of the new energy vehicle industry, permanent magnet synchronous motor (PMSM) has been widely used due to its high efficiency, high power density, and low torque fluctuation [1]. Meanwhile, the shorter development cycle has put forward higher requirements for the testing methods of electric drive systems [2].…”