Problem 3: (25 points) The parameters of a DFIG are given below. The stator is connected to a three-phase grid at 600 V RMS (line-line) and 60 Hz.  At a given wind velocity the rotor is required to rotate at a speed (mech) of 1080 RPM to capture wind power of 0.7 MW at this wind velocity. The stator reactive power needs to be controlled to zero.  You may neglect all losses except the losses in the rotor resistance. The turns-ratio between the stator and rotor windings can be assumed to be 1:1.  Assume grid voltage orientation where the d axis is aligned to the grid voltage space vector. Neglect stator resistance and stator leakage inductance.  Rotor resistance, Rr: ;  Rotor leakage inductance, Llr: 0.1 mH;  Magnetizing inductance, Lm: 1.5 mH; Number of poles, p: 6 For the given operating conditions in steady state, (a) Calculate the slip s and the frequency of rotor currents (b) Calculate the stator power and the power processed by the rotor side converter (b) Calculate the values of currents   (c) Calculate the flux linkages   (d) Calculate required rotor voltages,  

Your homecare patient is having great difficulty with typical health management and IADLs, such as medication management, meal prep, and laundry. The patient has discussed these concerns with both you and the nurse. You are hoping that the patient may qualify for a personal care aide to assist with these tasks. Your next step should be to: 

Name 3 OT-related goals associated with assistive technology. For each goal, give one example of assistive technology that an OT could recommend to achieve this goal.

Explain why you might choose to use a drop arm commode versus as standard commode during a treatment session. 

Difficulty with night vision would commonly be one of the first signs of this visual disorder. 

Your team’s Case Manager would be responsible for which of the following: 

The splint in the picture above functions to: 

Which of the following is true of symptoms associated with psychiatric disorders? 

Match the following Ranchos levels to their corresponding descriptions

Which of the following is an evidence-based intervention used to develop a tenodesis grasp? Activities/exercises to increase strength of: