High-Frequency Voltage Injection Sensorless Control Technique for IPMSMs Fed by a Three-Phase Four-Switch Inverter With a Single Current Sensor

Abstract

His research interests include electric drives, power electronics, and distributed generation. He has authored or coauthored over 80 internationally refereed papers and four books in these areas. Prof. Wang received several academic awards including IEEE PES

High-Frequency Injection-Based Sensorless Control for a General Five-Phase BLDC Motor Incorporating System Delay and Phase Resistance

“…Assume above approximation holds which, however, may be conditional. Equation 25shares the same internal model with the target sub-plant of (20), and this implies that the target signal, which contains θ -related information, is always in phase with Id h when the estimated d-axis leads ahead of the real d-axis and anti-phased when the estimated d-axis lags behind. Thus, a standard reference in phase with Id h is more suitable to extract θ in practice.…”

“…For instance, Yousefi-Talouki et al [19], combined the active flux and classical HF injection for sensorless direct-flux vector control of synchronous reluctance machines, with proven adaptability. Sensorless control of three-phase fourswitch inverter-driven motor with merely one single current sensor is investigated under 1 kHz injection [20]. Besides, in [21], the combination of high-bandwidth power switch SIC (working at 100 kHz) with a high-end FPGA is attempted under a 2 kHz injection (which is still classified as a typical HF injection while comparing with the switching frequency).…”

A PI‐Type Sliding Mode Controller Design for PMSG‐Based Wind Turbine

“…The simulation test platform is based on the MATLAB/Simulink environment and the packaged modules in SimPowerSysterms are used in this simulation test platform, including the wind turbine, PMSG, and VSCs. Meanwhile, the two mass block spring damping model mentioned in [21][22][23][24][25][26][27][28][29][30][31] is adopted to describe the dynamics of flexible drive chain. Therefore, the simulation test platform is relatively close to the actual physical system, due to the adoption of many packaged modules.…”

DC-Link Current Control with Inverter Nonlinearity Compensation for Permanent Magnet Synchronous Motor Drives

“…In order to simplify system structure and avoid disturbance due to mismatches of sensor characteristics, an interesting research topic has emerged in recent years that replaces traditional phase current measurement with reconstruction [15][16][17][18][19][20]. Since each switching state of VSI corresponds to a specific conduction relationship between DC-link and AC-link, three-phase currents can be sequentially measured by a single DC-link current sensor as switching state changes [15].…”

“…However, there are some reconstruction dead zones in the space vector plane, such that the duration of switching state is not sufficient for accurate current sampling [16]. Generally, these reconstruction dead zones need to be narrowed by PWM modification, such as measurement vector insertion [17] and switching-state phase shift [18]. In an earlier study [19], the authors proposed to reduce the effect of dead zones by adjusting the position of current sensor and sampling during zero voltage vectors.…”