3rd Harmonic Modulation
This simulation shows a center-aligned carrier modulated with three-phase sine waves with a third-harmonic sinewave added. Since it is a third harmonic frequency w.r.t. the fundamental motor...
View ArticleSingle-shunt Current Sensing
This simulation shows the effect of center-aligned PWMs applied to a 3-phase Permanent Magnet Synchronous Motor load using a 3-phase inverter. It is demonstrated how center-aligned PWMs result in...
View ArticleCurrent Limited Unipolar PWMs
This simulation is very similar to the Current Limited Bipolar PWMs simulation, except Unipolar PWMs are utilized instead. Both simulations use a hardware cycle-by-cycle current limiting scheme that I...
View ArticleBipolar PWM Sweep
In this simulation, the motor is connected to a dyno which holds the speed to -338 rad/sec. The bipolar PWM switching pattern is modulated between -1 and +1 while the motor voltage and bus power are...
View ArticleCurrent Limited Bipolar PWMs
This simulation utilizes a hardware cycle-by-cycle current limiting scheme that I successfully deployed several years ago. It recreates the same scenario that is found in the Bipolar PWM Sweep...
View ArticleUnipolar 4-Quadrant PWMs
This simulation models the effect of unipolar 4-quadrant PWM switching. When the back-EMF voltage has greater amplitude and the same polarity when compared to the applied voltage, it is shown that...
View ArticleBipolar 4-Quadrant PWMs
This simulation models the effect of bipolar 4-quadrant PWM switching. It is shown that bipolar 4q patterns can regenerate when the back-EMF voltage is higher in amplitude and of the same polarity as...
View ArticleDC Motor Plugging
This simulation demonstrates the dangerous current levels that are possible when plugging a motor. The motor is running at 3000 RPM with Unipolar PWMs when suddenly the PWM polarity is changed from...
View ArticleUnipolar 2-Quadrant PWMs
This simulation models the effect of unipolar 2-quadrant PWM switching. As long as the amplitude of the back-emf voltage in the motor does not exceed the bus voltage, it is shown that unipolar 2q...
View ArticleMotor Load Model
This simulation shows how to model the static and kinetic aspects of a motor load. The load block accepts motor electromagnetic torque as an input, and it generates acceleration, velocity, position...
View ArticleDC Motor Model
This simulation shows the performance of a simple DC motor when connected to a power supply and a variable load.TRANSIENTS: At t=0, the motor is connected to 24V. At 250 mS, the load torque is...
View ArticleSingle-Phase Back-EMF Observer
This simulation shows how to implement a back-EMF observer by comparing the measured phase current with the estimated phase current and using the error signal to recreate the missing back-EMF...
View ArticleAlpha-Beta PMSM Digital Angle Observer
This simulation shows the sensorless single-phase back-EMF estimation technique extended to a two-phase (alpha-beta) representation of a 3-phase motor. In addition, an angle demodulator is introduced...
View ArticleINSTASPIN-FOC: How to make the motor "beep"?
Hello -First of all I just want to say that I love INSTASPIN-FOC and the TI support community!I am currently designing my own hardware, but am using a LAUNCHXL-F28027F/BOOSTXL-DRV8301 for now.Most...
View ArticleCalculating current consumption
Hello Chris,we got a problem with an answer you provided me some time ago.In this thread you confirmed the overall current consumption to be the Is_A value...
View ArticleCurrent Limited Unipolar PWMs
This simulation is very similar to the Current Limited Bipolar PWMs simulation, except Unipolar PWMs are utilized instead. Both simulations use a hardware cycle-by-cycle current limiting scheme that I...
View ArticleBipolar PWM Sweep
In this simulation, the motor is connected to a dyno which holds the speed to -338 rad/sec. The bipolar PWM switching pattern is modulated between -1 and +1 while the motor voltage and bus power are...
View ArticleCurrent Limited Bipolar PWMs
This simulation utilizes a hardware cycle-by-cycle current limiting scheme that I successfully deployed several years ago. It recreates the same scenario that is found in the Bipolar PWM Sweep...
View ArticleUnipolar 4-Quadrant PWMs
This simulation models the effect of unipolar 4-quadrant PWM switching. When the back-EMF voltage has greater amplitude and the same polarity when compared to the applied voltage, it is shown that...
View ArticleBipolar 4-Quadrant PWMs
This simulation models the effect of bipolar 4-quadrant PWM switching. It is shown that bipolar 4q patterns can regenerate when the back-EMF voltage is higher in amplitude and of the same polarity as...
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