Space Vector Pulse Width Modulation •
The three-phase system is transformed into a two-dimensional space vector using Clarke transformation ( αβ coordinates) Eight possible switching states create six active vectors and two zero vectors The reference voltage vector is synthesized by time-averaging adjacent vectors Provides 15.47% higher DC bus utilization compared to sinusoidal PWM Maximum Power Point Tracking (MPPT): SVPWM enables precise speed control to maintain optimal tip-speed ratio in wind applications Field Weakening: Extends operating speed range by controlling d-axis current Unity Power Factor Control: Minimizes reactive power for maximum efficiency High Temperature Operating Life (HTOL): 1000 hours at max junction temperature Temperature Cycling: -65°C to +150°C, 1000 cycles minimum Autoclave/HAST: 96-264 hours of accelerated moisture testing Temperature Humidity Bias (THB): 85°C/85% RH for 1000 hours Power Temperature Cycling: 1000 cycles with device powered Mechanical Shock: 1500G, 0.5ms duration Variable Frequency Vibration: 20-2000Hz Wire Bond Pull/Shear: Tests bond integrity Die Shear: Ensures proper die attachment ESD testing: Human Body Model (HBM) and Charged Device Model (CDM) Temperature Cycling: -55°C to +125°C (Grade 1), 1000 cycles
Outer Loop: Speed or power control generating torque reference Inner Loop: Current control in dq reference frame
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SVPWM Block: Converts dq voltage commands to switching signals
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Higher Efficiency: Better DC bus utilization means lower current for same power Reduced Torque Ripple: Smoother operation, important for mechanical stress Lower Harmonics: Cleaner power generation, easier filtering Flexible Control: Easy integration with field- oriented control (FOC)
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Inverter with AEC Q101/Q200 Certification •
Biased Humidity: 85°C/85% RH, 1000 hours with rated voltage Operational Life: 1000 hours at max ratings Mechanical Shock: 1500G for chip components Vibration: 10-2000Hz, 20G acceleration Board Flex: 2mm deflection for SMD components Terminal Strength: Pull/push/torque tests Solderability: After aging and stress Parametric shifts after each stress test Surge/pulse capability testing
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Flammability testing Solvent resistance
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Grade 0: -50°C to +150°C (under hood) Grade 1: -40°C to +125°C (engine compartment) Grade 2: -40°C to +105°C (cabin hot spots))
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