• Two Pulse Width Modulator units (PWMA and PWMB), each with six PWM outputs, three Current Sense inputs, and four Fault inputs, fault-tolerant design with dead time insertion; supports both center-aligned and edge-aligned modes
• 12-bit Analog-to-Digital Converters (ADCs), supporting two simultaneous conversions with dual 4-pin multiplexed inputs; ADC can be synchronized by PWM modules
• Two Quadrature Decoders (Quad Dec0 and Quad Dec1), each with four inputs, or two additional Quad Timers, A & B
• Two dedicated general purpose Quad Timers, totalling six pins: Timer C, with two pins and Timer D, with four pins
• CAN 2.0 B-compatible module with 2-pin ports used to transmit and receive
• Two Serial Communication Interfaces (SCI0 and SCI1), each with two pins, or four additional GPIO lines
• Serial Peripheral Interface (SPI), with a configurable 4-pin port (or four additional GPIO lines)
• Software-programmable, Phase Lock Loop-based frequency synthesizer for the hybrid controller core clock
Squirrel-cage AC induction motors are popular for their simple construction, low cost per horsepower, and low maintenance (they contain no brushes, as do DC motors). They are available in a wide range of power ratings. With field-oriented vector control methods, AC induction motors can fully replace standard DC motors, even in high-performance applications.
There are a number of AC induction motor models. The model used for vector control design can be obtained by using the space vector theory. The 3-phase motor quantities (such as voltages, currents, magnetic flux, etc.) are expressed in terms of complex space vectors. Such a model is valid for any instantaneous variation of voltage and current and adequately describes the performance of the machine under both steady-state and transient operation. Complex space vectors can be described using only two orthogonal axes. The motor can be considered a 2-phase machine. The utilization of the 2-phase motor model reduces the number of equations and simplifies the control design.