{"id":35,"date":"2019-05-29T22:54:27","date_gmt":"2019-05-29T22:54:27","guid":{"rendered":"https:\/\/scholars.spu.edu\/meap\/?page_id=35"},"modified":"2019-06-03T02:15:31","modified_gmt":"2019-06-03T02:15:31","slug":"functional-specs","status":"publish","type":"page","link":"https:\/\/scholars.spu.edu\/meap\/functional-specs\/","title":{"rendered":"Functional Specs"},"content":{"rendered":"\n

Summary Table<\/h1>\n\n\n\n
\n Spec ID\n <\/td>\n Requirement\n <\/td>\n Threshold\n <\/td>\n Objective\n <\/td> Validation Method <\/td><\/tr>
\n ES01\n <\/td>\n Component\n Voltage Rating\n <\/td>\n Powerpath\n rating for at least 50V, control circuitry rating for at least 20V.\n <\/td>\n Powerpath\n rating for at least 70V, control circuitry rating for at least 30V.\n <\/td>\n Derating of\n individual components, assuming “worst case” operation parameters. \n <\/td><\/tr>
\n ES02\n <\/td>\n Component\n Current Rating\n <\/td>\n Powerpath\n rating for at least 60A, control circuitry rating for at least 12A.\n <\/td>\n Powerpath\n rating for at least 70A, control circuitry rating for at least 20A.\n <\/td>\n Derating of\n individual components, assuming “worst case” operation parameters. \n <\/td><\/tr>
\n PT01\n <\/td>\n Ripple\n Voltage Limit\n <\/td>\n Ripple\n Voltage will not be in excess of 2Vpp, at 4-15kHz.\n <\/td>\n  \n <\/td>\n Use\n oscilloscope to measure ripple voltage in circuit.  Report the average of 5 measurements.\n <\/td><\/tr>
\n PT02\n <\/td>\n Directional\n Operation \n <\/td>\n Unidirectional\n <\/td>\n Bidirectional\n <\/td>\n Supplying\n loosely conditioned input of 20.5-35.5VDC to input to expect a nominal output\n as specified in OP04-OP06.\n <\/td><\/tr>
\n PT03\n <\/td>\n Power Dropout\n Duration\n <\/td>\n 500ms \n <\/td>\n 50ms\n <\/td>\n An\n oscilloscope will be used to read output voltage with respect to time. Power\n transfer direction will be changed 3 times. \n The average of the 3 dropout times is reported as the system dropout\n time.  \n <\/td><\/tr>
\n OP01\n <\/td>\n Constant\n Current Output\n <\/td>\n Constant\n current output of 50A \u00b1 5%.\n <\/td>\n Constant\n current output, based on battery charging algorithm via RS-485 signal\n interface delivering 50A \u00b1 1%.\n <\/td>\n Oscilloscope\n measurements of output, once every 10 seconds for 2 minutes. Average of all\n measurements reported. If the average current is within the stated tolerance\n (\u00b15% or \u00b11%) then current is considered constant.\n <\/td><\/tr>
\n OP02\n <\/td>\n Constant\n Voltage Output\n <\/td>\n Constant\n voltage output delivering 28.5-32V \u00b1 5%.\n <\/td>\n Constant\n voltage output, based on battery charging algorithm, via RS-485 signal\n interface, delivering 28.5-32V \u00b1 1%.\n <\/td>\n Multimeter\n measurement of output, once every 10 seconds for 2 minutes.  Average of all measurements, reported.  If the average voltage is within the stated\n tolerance (\u00b15% or \u00b11%) then voltage is considered\n constant.  \n <\/td><\/tr>
\n OP03\n <\/td>\n Phase\n Margin\n <\/td>\n < 70\u00b0\n phase margin at full load, in excess of 45\u00b0 phase margin across any load. \n <\/td>\n  \n <\/td>\n Oscilloscope\n measurement of phase margin. Average of 3 phase measurements reported. \n <\/td><\/tr>
\n OP04\n <\/td>\n Max Voltage\n Output\n <\/td>\n Voltage\n output will not exceed 32VDC.\n <\/td>\n  \n <\/td>\n Multimeter\n measurement of output once every 10 seconds for 2 minutes. Maximum\n measurement reported.\n <\/td><\/tr>
\n OP05\n <\/td>\n Boost Mode\n Operation\n <\/td>\n 30VDC \u00b1 5%\n output.\n <\/td>\n 30VDC \u00b1 1%\n output.\n <\/td>\n Loosely\n conditioned input of 21VDC is supplied to the input where the output voltage\n is expected to be roughly 30VDC \u00b1 stated voltage. Multimeter will measure output voltage at 10 second\n intervals for a span for 2 minutes. \n Average of all measurements is reported as output voltage.  \n <\/td><\/tr>
\n OP06\n <\/td>\n Buck Mode\n Operation\n <\/td>\n 30VDC \u00b1 5%\n output.\n <\/td>\n 30VDC \u00b1 1%\n output.\n <\/td>\n Loosely\n conditioned input of 35VDC is supplied to the input where the output voltage\n is expected to be roughly 30VDC \u00b1 stated voltage. Multimeter will measure output voltage at 10 second\n intervals for a span for 2 minutes. \n Average of all measurements is reported as output voltage.  \n <\/td><\/tr>
\n OP07\n <\/td>\n TR Mode\n <\/td>\n 28VDC \u00b1 5% output.\n <\/td>\n 30VDC \u00b1\n 1% output.\n <\/td>\n Loosely\n conditioned input of 35VDC is supplied to the input where the output voltage\n is expected to be roughly 28VDC \u00b1 stated voltage. Use of a multimeter to measure output voltage at 30\n second intervals for a 5-minute continuous operation period.  The average of these recorded measurements\n is reported as the output voltage, in TR mode. \n <\/td><\/tr>
\n UI01\n <\/td>\n Signal\n Interface\n <\/td>\n RS-485.\n <\/td>\n RS-485\n capable of accepting Turn-On\/Turn-Off commands, Charge vs TR mode, Current\n Limit, Charge Mode Topping Voltage limit, and Power Direction Commands.\n <\/td>\n RS-485\n signal interface must be present on the power converter, where the signal is\n connected to the FPGA\/powertrain. Simulations will be a secondary means to\n analyzing data streams\/sent commands for this spec. \n <\/td><\/tr>
\n MS01\n <\/td>\n System Mass\n <\/td>\n Full system\n mass less than 5.44kg. \n <\/td>\n Full system\n mass less than 4.45kg \n <\/td>\n Final\n prototype will be placed on a weight scale. Any components, which are shown in the CAD models and drawings, but\n are not present at the time the system mass is recorded, must be analytically\n determined and added to the mass recorded by the scale.  \n Sum of\n the scale mass, and any masses which are analytically determined, which is\n reported as the final as-designed system mass.  \n <\/td><\/tr>
\n MS02\n <\/td>\n Enclosure\n Type\n <\/td>\n Full CAD\n package, containing models, drawings, part numbers for ARINC600 4MCU\n enclosure.\n <\/td>\n Power\n Converter housed in ARINC600 4MCU enclosure.\n <\/td>\n Primary\n Analysis is dimensional CAD analysis. \n Secondary Analysis is to take three measurements for each dimension\n (length, width, height) and report the average of the 3 measurements as the\n final dimension.   \n <\/td><\/tr>
\n MS03\n <\/td>\n Full System\n Volume\n <\/td>\n External\n dimensions will not exceed 5.01\u201d \u00b10.05\u201d x 7.25\u201d \u00b10.05\u201d x 14.95\u201d \u00b10.05.\u201d \n <\/td>\n  \n <\/td>\n Primary\n Analysis is dimensional CAD analysis. \n Secondary Analysis is to take three measurements for each dimension\n (length, width, height) and report the average of the 3 measurements as the\n final dimension.   \n <\/td><\/tr>
\n MS06\n <\/td>\n Thermal\n Management \u2013 Maximum Internal Temperature\n <\/td>\n Internal Temperature < 90\n \u00b0<\/strong>C at bulk\n temperature > 65 \u00b0<\/strong>C\n Load\n Reduction to 30 A allowed\n <\/td>\n Internal Temperature < 90\n \u00b0<\/strong>C at bulk\n temperature > 65 \u00b0<\/strong>C\n Full\n Load\n  \n <\/td>\n SolidWorks\n Thermal Simulations or ANSYS FEA tools will be used to determine theoretical\n values; thermocouples to measure physical values for a length of 45 min for\n 30A\/50A.\n <\/td><\/tr>
\n MS07\n <\/td>\n Internal\n Temperature \u2013 Medium  \n <\/td>\n Internal Temperature < 90\n \u00b0<\/strong>C when 50 \u00b0<\/strong>C < bulk temperature <\n 65 \u00b0<\/strong>C\n Load\n Reduction to 30 A allowed\n <\/td>\n Internal Temperature < 90\n \u00b0<\/strong>C when 50 \u00b0<\/strong>C < bulk temperature <\n 65 \u00b0<\/strong>C\n Full\n Load\n <\/td>\n SolidWorks\n Thermal Simulations or ANSYS FEA tools will be used to determine theoretical\n values; thermocouples to measure physical values for a length of 60 min for\n 30A\/50A.\n <\/td><\/tr>
\n MS08\n <\/td>\n Internal\n Temperature \u2013 Steady State \n <\/td>\n Internal\n Temperature < 90 \u00b0<\/strong>C\n when bulk temperature < 50 \u00b0<\/strong>C\n Full\n Load\n <\/td>\n Internal\n Temperature < 70 \u00b0<\/strong>C\n when bulk temperature < 50 \u00b0<\/strong>C\n Full\n Load\n <\/td>\n Transient\n Thermal Simulations using SolidWorks Thermal Simulations or ANSYS FEA tools\n will be used to determine theoretical values; thermocouples within the enclosure will measure physical values for a\n length of 60 min for full load. \n <\/td><\/tr><\/tbody><\/table>\n","protected":false},"excerpt":{"rendered":"

Summary Table Spec ID Requirement Threshold Objective Validation Method ES01 Component Voltage Rating Powerpath rating for at least 50V, control circuitry rating for at least 20V. Powerpath rating for at least 70V, control circuitry rating for at least 30V. Derating of individual components, assuming “worst case” operation parameters. ES02 Component Current Rating Powerpath rating for […]<\/p>\n","protected":false},"author":38,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"class_list":["post-35","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/scholars.spu.edu\/meap\/wp-json\/wp\/v2\/pages\/35","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/scholars.spu.edu\/meap\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/scholars.spu.edu\/meap\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/scholars.spu.edu\/meap\/wp-json\/wp\/v2\/users\/38"}],"replies":[{"embeddable":true,"href":"https:\/\/scholars.spu.edu\/meap\/wp-json\/wp\/v2\/comments?post=35"}],"version-history":[{"count":6,"href":"https:\/\/scholars.spu.edu\/meap\/wp-json\/wp\/v2\/pages\/35\/revisions"}],"predecessor-version":[{"id":129,"href":"https:\/\/scholars.spu.edu\/meap\/wp-json\/wp\/v2\/pages\/35\/revisions\/129"}],"wp:attachment":[{"href":"https:\/\/scholars.spu.edu\/meap\/wp-json\/wp\/v2\/media?parent=35"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}