class: center, middle # EE-564 Design of Electrical Machines ## Ozan Keysan [ozan.keysan.me](http://ozan.keysan.me) Office: C-113 <span class="meta">•</span> Tel: 210 7586 --- # Standards [More info](http://new.abb.com/docs/librariesprovider53/about-downloads/low-voltage-motor-guide.pdf) -- ## Efficiency Standards ([IEC-60034-30](http://en.wikipedia.org/wiki/IEC_60034)) -- - ### IE1: Standard Efficiency -- - ### IE2: High Efficiency -- - ### IE3: Premium Efficiency -- - ### IE3: Super Premium Efficiency #### By 2015, all the motors between 7.5-375 kW sold in EU has to be IEC3! --- # Standards: -- Efficiency <img src="http://www.elvem.it/wp-content/uploads/2014/10/ie-efficency-class-4-poles-motors.jpg" alt="Drawing" style="width: 700px;"/> --- # Standards: Efficiency <img src="http://www.rotomotive.com/product/motor/efficiency/img_5.jpg" alt="Drawing" style="width: 600px;"/> --- # Standards ## Degrees of Protection -- ## IP 56 -- ## First Number (Particle/Person protection) - #### 2: Motors protected against solid objects greater than 12 mm -- - #### 4: Motors protected against solid objects greater than 1 mm -- - #### 5: Dust-protected motors -- - #### 6: Dust-tight motors --- # Standards ## Degrees of Protection -- ## IP 56 -- ## Second Number (Water Ingress Protection) - #### 3: Motors protected against spraying water -- - #### 4: Motors protected against splashing water -- - #### 5: Motors protected against water jets -- - #### 6: Motors protected against heavy sea --- # Voltage Standars - ## 220-240 V (Delta) -- - ## 380-415 V (Wye) -- - ## 500 V (Delta) -- - ## 660-690 V (Wye) --- # Frame Sizes [More info](http://www05.abb.com/global/scot/scot234.nsf/veritydisplay/a7c16f0e10f4a826c1257c9000270ce0/$file/MotorGuide_february2014_low_FINAL%20with%20bookmarks.pdf), page 37 [More info](http://www.motology.co.th/download/motors/%282%29%20Standard%20Motor%20catalog.pdf) --- # Design Procedure -- ## Starting Values -- - #### Motor Type and construction -- - #### Power, power factor -- - #### Rotational Speed -- - #### Rated frequency -- - #### Rated Voltage -- - #### Intended usage (duty cycle) -- - #### Enclosure Class --- # Design Procedure: -- - ## Define the magnetic loading and electric loading -- - ## Define the Diameter and axial length -- - ## Define the Airgap -- - ## Winding Type and number of coils --- # Design Procedure: - ## Determination of other dimensions (slot, tooth etc.) -- - ## Calculation of machine performance -- - ## Lots of iteration/optimization --- # Specific Machine Constant (C) -- ### \\(S\_i = m E\_m I\_s\\) -- ### \\(S\_i = m \dfrac{1}{\sqrt{2}} \omega N\_s k\_{w1} \hat{\Phi}\_m I\_s\\) -- ### \\(S\_i = m \dfrac{1}{\sqrt{2}} \omega N\_s k\_{w1} \hat{\Phi}\_m \dfrac{A \pi D}{2}\\) -- ### \\(\omega = 2 \pi p n\_{syn}\\) --- # Specific Machine Constant (C) -- ### \\(S\_i = \dfrac{1}{\sqrt{2}} 2 \pi p n\_{syn} k\_{w1} \dfrac{\pi D }{2p}\dfrac{2}{\pi} \hat{B} l'\dfrac{A \pi D}{2}\\) -- ### \\(S\_i = \dfrac{\pi^2}{\sqrt{2}} n\_{syn} k\_{w1} A \hat{B} D^2 l'\\) -- ### \\(S\_i = C D^2 l' n\_{syn}\\) ### \\(C = \dfrac{\pi^2}{2} k\_{w1} \hat{A} \hat{B} \\) --- # \\(C\_{mech}\\) <img src="./images/Cmech.png" alt="Drawing" style="width: 600px;"/> --- ## Example: -- ### Determine the main dimensions for a 30 kW, 690 V, 50 Hz four-pole, three-phase SCIG. -- #### Choose Cmech = 150 kW s/m3 --- ## You can download this presentation from: [keysan.me/ee564](http://keysan.me/ee564)