RMxprt风力发电.ppt

? 2010 ANSYS, Inc. All rights reserved. * ANSYS, Inc. Proprietary ? 2010 ANSYS, Inc. All rights reserved. * ANSYS, Inc. Proprietary ? 2010 ANSYS, Inc. All rights reserved. * ANSYS, Inc. Proprietary ? 2010 ANSYS, Inc. All rights reserved. * ANSYS, Inc. Proprietary ? 2010 ANSYS, Inc. All rights reserved. * ANSYS, Inc. Proprietary RMxprt training:DFIG Source Type AC DC Structure Inner Rotor Outer Rotor Axial-Flux Rotor Stator Type SLOT_AC SLOT_AC1; SALNT_POLE; SALNT_SHAD; SALNT_DCM; NONS_SLOT; PM_SURFACE; PM_INTERIOR; PM_CLAW; AXIAL_AC; AXIAL_PM Rotor Type SLOT_AC SLOT_DC; SLOT_CAGE; SALNT_POLE; NONS_SLOT; NONS_RELU; PM_SURFACE; PM_INTERIOR; PM_CLAW; AXIAL_AC; AXIAL_PM; AXIAL_DC; AXIAL_CAGE 新的电机类型：通用旋转电机Generic Rotating Machines (GRM) (SLOT_AC Stator Core) + (SLOT_AC Rotor Core) = Doubly-Fed Induction Generator (DFIG) (SLOT_AC1 Stator Core) + (SLOT_CAGE Rotor Core) = Single-Phase Induction Motor (IndM1) (SLOT_AC Stator Core) + (SALNT_POLE Rotor Core) = Synchronous Motor / Generator (SynM) (SALNT_DCM Stator Core) + (SLOT_DC Rotor Core) = DC Motor / Generator (DCM) (PM_SURFACE Stator Core) + (SLOT_DC Rotor Core) = PM DC Motor / Generator (PMDC) 新的电机类型：通用旋转电机Generic Rotating Machines (GRM) 通用旋转电机(GRM)：轴向磁场电机 通用旋转电机(GRM)：新的IPM电机 The converter rating is reduced to about 15% of the rated power. 风力发电系统 风力机的空气动力学功率 r ? the air density R ? the turbine radius v ? the wind velocity (m/s) cp(l) ? the power coefficient, the ratio of the turbine power to the wind power as a function of the tip speed ratio l=R?wt/v wt ? the turbine speed (rad/s) At lopt, cp is at its maximum, then turbine power is Pmax = k?wt3 where k = (r/2)p?R5/lopt3?cpmax For a given wind velocity v = v1, the P(wt) curve is the same as the cp(l) curve. For the optimized constant tip speed ratio lopt, as long as the load torque of the wind turbine (or the input power of DFIG) isPm = Pref ? (wm /wref)3 where Pref /wref3 = k is determined by lopt, the w