Abstract: VSG Frequency Control Method, Device and Storage Medium based on Power Correction, belonging to the field of power electronics technology, which addresses the problem of suppressing VSG output power oscillations. The technical solution of the present application corrects the output power Pe(s) and feeds the corrected value back to the control loop to suppress power oscillations. The transfer function of the power correction stage G(s) is flexible and can be configured with appropriate parameters according to the system's inherent phase margin. Additionally, principles for selecting the parameters of the correction coefficients ?1 and ?2 are also provided. The adjustment coefficients of the power correction stage, the values of ?1 and ?2 do not affect the effect of the steady-state gain during the transient process. The present application can not only suppress VSG output power oscillations, but also provide a larger inertial support, thereby improving the stability of the VSG system.

Abstract: The present application discloses crystals of 2-acetoxy-5-(?-cyclopropylcarbonyl-2-fluorobenzyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine hydrobromate, crystal compositions and pharmaceutical compositions comprising them and their use. The crystals of prasugrel hydrobromate of the present application possess excellent stability and solubility.

Abstract: The present application discloses crystals of 2-acetoxy-5-(?-cyclopropylcarbonyl-2-fluorobenzyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine hydrobromate, crystal compositions and pharmaceutical compositions comprising them and their use. The crystals of prasugrel hydrobromate of the present application possess excellent stability and solubility.