Abstract
In this paper, in order to verify the effect of variable DC-bus voltage control, CCS-MPC (Continuous-Control-Set MPC) control is used to research the control of PMSM (Permanent-Magnet Synchronous Machine) in a wide speed range. In order to maximize the speed of PMSM, the MTPA control, the field weakening control and the variable DC-bus voltage control are applied in the different speed range of PMSM. CCS-MPC can eliminate the control delay by controlling the predicted step size. When CCSMPC is applied to the PMSM control with a wide speed range, the advantages of strong adaptability of CCS-MPC can be exerted.
Highlights
Flywheel energy storage has many advantages, such as high efficiency, no pollution and simple maintenance
Time-varying loads and fluctuating renewable energy will lead to the fluctuation of power and voltage in the DC grid
Using flywheel energy storage can realize the stable regulation of power and voltage in the DC grid
Summary
Flywheel energy storage has many advantages, such as high efficiency, no pollution and simple maintenance. Using flywheel energy storage can realize the stable regulation of power and voltage in the DC grid. MPC of PMSM can be divided into CCS-MPC (Continuous Control-Set MPC) [4]-[5] and FCS-MPC (Finite-Control-Set MPC) [6]-[7] according to the different control methods of its voltage vectors. The output of CCS-MPC is the voltage vector, which needs to pass through the PWM modulation module to achieve the purpose of controlling PMSM. In [8], an improved continuous-time model predictive control of PMSM for a wide-speed range,. In [9], by using the multi-step predictive MPC control method, a better switching combination can be obtained with reduced torque and current fluctuations.
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