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dsPICDEM? MCHV
DEVELOPMENT SYSTEM
USER ’S GUIDE
Chapter 1. Introduction
1.1
OVERVIEW
The Microchip dsPICDEM? MCHV Development System is intended to aid the user in
the rapid evaluation and development of a wide variety of motor control applications
using a dsPIC ? Digital Signal Controller (DSC). This development system is targeted
to control Brushless DC (BLDC) motors, Permanent Magnet Synchronous Motors
(PMSM), and AC Induction Motors (ACIM) in sensor or sensorless operation.
This flexible and cost-effective tool can be configured in different ways for use with
Microchip’s specialized Motor Control DSCs. The dsPICDEM? MCHV Development
System supports the dsPIC33F Motor Control device family, and offers a mounting
option to connect either a 28-pin SOIC device or a generic 100-pin Plug-In Module
(PIM).
The system has a three-phase power module device that contains the motor inverter
and the gate driver’s circuitry. The circuit drives a BLDC, PMSM, or ACIM motor using
different control techniques without requiring any additional hardware. It also has
Power Factor Correction (PFC) circuitry in order to provide a full set of tools used in
motor control applications. Figure 1-1 provides a photograph of the dsPICDEM?
MCHV Development System. A block diagram that shows the main components of the
system is provided in Figure 1-2.
The rated continuous output current from the inverter is 6.5A (RMS). This allows up to
approximately 2 kVA output when running from a 208V to 230V single-phase input volt-
age in a maximum 30oC (85oF) ambient temperature environment. Therefore, the sys-
tem is ideally suited for running a standard 3-Phase Induction Motor of up to 1.4 kW
(1.8 HP) rating or a slightly higher rated industrial servo-motor. The power module is
capable of driving other types of motors and electrical loads that do not exceed the
maximum power limit and are predominantly inductive. Furthermore, single-phase
loads can be driven using one or two of the inverter outputs.
The unit is capable of operating from 90V up to a maximum of 265V. A more detailed
explanation of power limitations is provided in Chapter 4. “Hardware” .
Note:
? 2009 Microchip Technology Inc.
It is recommended to carefully read the hardware section mentioned above
before attempting to use the system.
DS70605A-page 7
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