DM330023-2 datasheet(13/64 Pages) MICROCHIP

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dsPICDEM™ MCHV

DEVELOPMENT SYSTEM

USER’S GUIDE

 2009 Microchip Technology Inc.

DS70605A-page 7

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: It is recommended to carefully read the hardware section mentioned above

before attempting to use the system.

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