Matrix Converter 2h142k

Project Presentation

Project Supervisor: Muhammad Baseer

Group : (SP09-EPE-110) (SP09- EPE-055) (FA08-EPE-081)

Waqas Ahmed Annas Chand Mohsin Mehmood

Matrix Converter

Characteristics Simple and compact power circuit. Generation of load voltage with arbitrary

amplitude and frequency. Sinusoidal input and output currents. Operation with unity power factor. Regeneration capability. No storage element is required. Fewer input currents harmonics. One stage conversion(AC/AC) instead of (AC/DC/AC). 1/3 lower loss then conventional system.

Three Phase Matrix Converter

Objectives High voltage Conversion(AC/AC). Variable Frequency like cycloconverter.

Single phase MC

Conduction for +ve cycle

Conduction for –ve cycle

Simulation of Single phase MC

Stator voltage 0 0 .

0

0 0 .

0

-0 .0

-0

-1 .1 0

0

0

0

0

0 0

0 0

x0

Rotor Frequency 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -0 -0 0 0

0

0

0

0

0 0

0 0

Pic (Peripheral Interface Controller)Microcontroller Wide range of interfaces including  A/D(up to

~1.0 MHz),programmable comparators, PWM etc Built in clock oscillator with selectable speeds. Different pin configuration 8/16/32 Bit Timers. External memory interface USB.

IGBT vs MOSFET IGBTs are preferred in… •Low frequency applications (<20kHz) • Operation at high junction temperature is allowed (>100°C) •Low duty cycles • High-voltage applications (>1000V) • >5kW output power

Mosfet are prefered in. •High frequency applications (>200kHz) • Operation at high junction temperature is allowed (<90°C) •Long duty cycles • Low-voltage applications (<250V) • < 500W output power

Proposed Tools

Space Vector Modulation  Space Vector Modulation refers to a special

switching sequence which is based on the upper switches of a three phase matrix converter. SVM treats a sinusoidal voltage as a phasor or

amplitude vector which rotates at a constant angular frequency, ω. This amplitude vector is represented in d-q plane where it denotes the real and imaginary axes.

Continue…  SVM treats all three modulating signals or voltages

as one single unit, the vector summation of three modulating signals or voltages are known as the reference voltage, V which is related to the magnitude of output voltage of the switching topologies. The aim of SVM is to approximate the reference voltage vector, Voref from the switching topologies.

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