Série MT
Magna-Power Electronics MT Series uses the same reliable current-fed power processing technology and controls as the rest of the MagnaDC programmable power supply product line, but with larger high-power modules: individual 150 kW and 250 kW power supplies. The high-frequency IGBT-based MT Series units are among the largest standard switched-mode power supplies on the market, minimizing the number of switching components when comparing to smaller module sizes. Scaling in the multi-megawatts is accomplished using the UID47 device, which provides master-slave control: one power supply takes command over the remaining units, for true system operation. As an added safety measure, all MT Series units include an input AC breaker rated for full power.
250 kW modules come standard with an embedded 12-pulse harmonic neutralizer, ensuring low total harmonic distortion (THD). Even higher quality AC waveforms are available with an external additional 500 kW 24-pulse or 1000 kW 48-pulse harmonic neutralizers, designed and manufactured exclusively by Magna-Power for its MT Series products.
Build-Time: 14-18 Weeks
Current-Fed Topology: Robust Power Conversion
All MagnaDC programmable DC power supplies utilize high-frequency IGBT-based power processing in current-fed topology. This topology adds an additional stage over the conventional voltage-fed topology for enhanced control and system protection, ensuring that even under a fault condition, the power supply will self-protect. Due to the self-protecting characteristics of this topology, the possibility of fast rising current spikes and magnetic core saturation is eliminated.
Made in the USA, Available Worldwide
For complete control of quality, MagnaDC programmable DC power supplies are designed and manufactured at Magna-Power's vertically integrated USA manufacturing facility in Flemington, New Jersey. Heat-sinks and various metal assemblies are machined from aluminum. Sheet metal is cut, punched, sanded, bent, and powder coated in-house. Magnetics are wound-to-order from validated designs based on a model's voltage and current. A full surface mount technology (SMT) with multiple stages of 3D automated optical inspection ensure high-quality board assemblies. Finally after assembly, products undergo comprehensive test and calibration, followed by an extended burn-in period.
Standard Safety Features
MagnaDC programmable DC power supplies have extensive diagnostic functions, including:
- AC Phase Loss
- Excessive Thermal Conditions
- Over Voltage Trip (Programmable)
- Over Current Trip (Programmable)
- Cleared Fuse
- Excessive Program Line Voltage
- Interlock Fault
When in standby or diagnostic fault, the AC mains are mechanically disconnected by an embedded AC contactor, providing confidence that the unit is only processing power when desired.
Finally, with a dedicated +5V interlock input pin and included +5V reference on all models, external emergency stop systems can be easily integrated using an external contact.
Limitless Programming Capabilities
With support for Standard Commands for Programmable Instrumentation (SCPI), MagnaDC power supplies provide an easy to use API with ASCII commands in readable text. Over 40 commands allow programmatic access to product registers, starting and stopping the product, control of voltage and current, high-accuracy measurement queries, and product configuration. Simple scripting or complex software can be achieved, with extensive documentation and examples provided by Magna-Power.
MagnaDC power supplies include RS232 communication interface standard with optional LXI TCP/IP Ethernet (+LXI) and IEEE-488 GPIB (+GPIB) options.
import serial
magnaPower = serial.Serial(port='COM4', baudrate=19200)
magnaPower.write('*IDN?\n'.encode())
print magna_power.readline()
magnaPower.write('VOLT 0\n'.encode())
magnaPower.write('CURR 0\n'.encode())
magnaPower.write('OUTP:START\n'.encode())
magnaPower.write('VOLT 270\n'.encode())
currSetPoints = [50, 100, 150, 250]
for currSetPoint in currSetPoints:
print 'Setting Current to %s A' % currSetPoint
magnaPower.write('CURR {0}\n'.format(currSetPoint).encode())
magnaPower.write('MEAS:VOLT?\n'.encode())
print magnaPower.readline()
time.sleep(20)
magnaPower.write('OUTP:STOP\n'.encode())
magnaPower.close()
magna_power = serial('COM4', 'BaudRate', 19200);
fopen(magnaPower);
fprintf(magnaPower,'*IDN?');
idn = fscanf(magnaPower);
fprintf(magnaPower,'VOLT 0');
fprintf(magnaPower,'CURR 0');
fprintf(magnaPower,'OUTP:START');
fprintf(magnaPower,'VOLT 270');
for currSetPoint in [50, 100, 150, 250]
display('Setting Current to '+currSetPoint+' A');
fprintf(magnaPower, 'CURR '+currSetPoint);
fprintf(magnaPower,'MEAS:VOLT?');
display(fscanf(magnaPower));
pause(20);
end
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <windows.h>
int main()
{
printf("Opening connection.\n");
uint8_t recvBuffer[sizeof(uint8_t) * 256];
memset(recvBuffer, 0, 256);
// Choose the serial port name.
// COM ports higher than COM9 need the \\.\ prefix, which is written as
// "\\\\.\\" in C because we need to escape the backslashes.
const char* device = "\\\\.\\COM4";
// Choose the baud rate (bits per second).
uint32_t baud_rate = 9600;
HANDLE port = open_serial_port(device, baud_rate);
if (port == INVALID_HANDLE_VALUE) { return 1; }
char* scpiCmd = (char*)"*IDN?\n";
size_t cmdLen = strlen(scpiCmd);
int result = write_port(port, (uint8_t*)scpiCmd, cmdLen);
if (result < 0)
return -1;
result = read_port(port, recvBuffer, 256);
printf("Sent: %s\nReceived: %s\n", scpiCmd, recvBuffer);
scpiCmd = (char*)"VOLT 0\n";
cmdLen = strlen(scpiCmd);
result = write_port(port, (uint8_t*)scpiCmd, cmdLen);
if (result < 0)
return -1;
scpiCmd = (char*)"CURR 0\n";
cmdLen = strlen(scpiCmd);
result = write_port(port, (uint8_t*)scpiCmd, cmdLen);
if (result < 0)
return -1;
scpiCmd = (char*)"OUTP:START\n";
cmdLen = strlen(scpiCmd);
result = write_port(port, (uint8_t*)scpiCmd, cmdLen);
if (result < 0)
return -1;
scpiCmd = (char*)"VOLT 270\n";
cmdLen = strlen(scpiCmd);
result = write_port(port, (uint8_t*)scpiCmd, cmdLen);
if (result < 0)
return -1;
char setPoints[4][5] = {"50", "100", "150", "200"};
char setPointBuffer[40];
scpiCmd = (char*)"MEAS:VOLT?\n";
for (int i = 0; i < 4; i++)
{
sprintf(setPointBuffer, "CURR %s\n", setPoints[i]);
printf("Setting current to %s A\n", setPoints[i]);
cmdLen = strlen(setPointBuffer);
result = write_port(port, (uint8_t*)setPointBuffer, cmdLen);
if (result < 0)
return -1;
memset(recvBuffer, 0, 256);
result = read_port(port, recvBuffer, 256);
printf("Received: %s\n", recvBuffer);
Sleep(20000); // 20000ms = 20s
}
scpiCmd = (char*)"OUTP:STOP\n";
cmdLen = strlen(scpiCmd);
result = write_port(port, (uint8_t*)scpiCmd, cmdLen);
if (result < 0)
return -1;
CloseHandle(port);
printf("Connection closed.\n");
return 0;
}
using System;
using System.IO.Ports;
using System.Threading;
namespace SerialCommunicationInCSharp
{
public class Program
{
static bool _continue;
static SerialPort serialPort;
public static void Main(string[] args)
{
Thread readThread = new Thread(Read);
Console.WriteLine("Opening connection.");
// Create a new SerialPort object with default settings.
serialPort = new SerialPort("COM4", 19200, Parity.None, 8, StopBits.One);
// Set the read/write timeouts
serialPort.ReadTimeout = 500;
serialPort.WriteTimeout = 500;
serialPort.Open();
_continue = true;
readThread.Start();
Console.WriteLine("Sending: *IDN?");
serialPort.WriteLine("*IDN?");
serialPort.WriteLine("VOLT 0");
serialPort.WriteLine("CURR 0");
serialPort.WriteLine("OUTP:START");
serialPort.WriteLine("VOLT 270");
string[] currSetPoints = { "50", "100", "150", "250" };
ß
for(int i = 0; i < currSetPoints.Length; i++)
{
serialPort.WriteLine(String.Format("'CURR {0}", currSetPoints[i]));
serialPort.WriteLine("MEAS:VOLT?");
Thread.Sleep(20000);
}
serialPort.WriteLine("OUTP:STOP");
Console.WriteLine("Closing connection.");
_continue = false;
serialPort.Close();
}
public static void Read()
{
while (_continue)
{
try
{
string message = serialPort.ReadLine();
Console.WriteLine("Received: " + message);
}
catch (TimeoutException) { }
}
}
}
}
High Performance Master-Slave Operation
All MagnaDC programmable DC power supplies come with master-slaving capability.
The MagnaDC master-slaving strategy helps to ensures no degradation in performance as units are added in parallel or series by providing gate drive signals directly from the master to the slave units. This strategy ensures one control loop for the system and eliminates the noise susceptibility commonly found when sending analog control references over long distances.
The Universal Interface Device 47 (UID47) accessory eases master-slave parallel or series configuration of Magna-Power DC power supplies, enabling near equal current or voltage sharing, depending on the configuration.
Master-slave series operation is supported to combined voltages up to the product's DC Output Isolation specification. No external blocking diodes are requires for series operation.
External User I/O for Analog and PLC Control
Using the standard rear isolated 37-pin user I/O connector, the MagnaDC programmable power supplies can be completely controlled and monitored using external signals. The voltage, current, over voltage and over current set points can be set by applying a 0-10V analog signal. Remote start, stop, clear and interlock (emergency stop tie-in) are controlled by applying a 5V digital signal. Each diagnostic condition is given a designated pin, which reads +5V when high. Reference +5V and +10V signals are provided, eliminating the need for external voltage signals and allowing the use of dry contacts.
All communications and user I/IO pins are isolated from the output terminals and referenced to earth-ground as standard.
Magna-Power Software, NI LabVIEW Drivers, and IVI Drivers
All MagnaDC power supplies come standard with an IVI driver and an NI LabVIEW driver featuring a full set of VIs. Get started quickly with either driver using included example programs.
Magna-Power's included Remote Interface Software (pictured) provides an easy and intuitive method to operate a Magna-Power Electronics power supply with computer control. The software includes a virtual control panel, command panel to explore available commands, register panel to monitor the power supply status, calibration panel for recalibrating internal digital potentiometers, firmware panel for upgrading firmware, and a finally a modulation panel to emulate non-linear profiles.
All communication interfaces are supported across the various methods to program MagnaDC power supplies.
MT Series Harmonic Neutralization
Magna-Power's Harmonic Neutralizers eliminate families of harmonic components by multiplying the number of input phases with specially wound magnetic components, reducing the total harmonic distortion (THD). These magnetic components, in combination with equally loaded, high-power DC power supplies, offer a cost-effective solution to maintaining power quality at acceptable levels, enabling applications to benefit from Magna-Power's reliable high-frequency switch-mode power supplies, extended into multi-megawatts. A 12-pulse Harmonic Neutralizer is embedded in all 250 kW models and its installation is transparent to the end user. For applications demanding an even better THD level than that provided by a 12-pulse waveform, external 24-pulse and 48-pulse harmonic neutralizers are available from Magna-Power. Contact you local sales partner for more information.
Understanding AC Harmonic Waveforms
The following figures are representative of expected AC current waveforms for the various pulses available from Magna-Power Electronics power supplies. Standard models 1.5 kW through 150 kW produce 6-pulse waveforms, while 250 kW models produce 12-pulse waveforms. Magna-Power Electronics Harmonic Neutralizers suppress families of harmonics by increasing the number of power phases. It can be used when multiple power supplies are used in series or parallel and are equally loaded. Harmonic Neutralizers can produce 12-pulse, 18-pulse, 24-pulse, or 48-pulse waveforms which have harmonic current components on the order of 12n±1, 18n±1, 24n±1, or 48n±1, respectively. The following figures show the theoretical difference for waveforms with a different number of pulses. Harmonic Neutralizers are protected with appropriate sized primary-side circuit breakers.
Why Neutralize Harmonics?
Input current harmonics are a by-product of nearly all power supplies. Power can only be delivered to the load if the frequency and phase of the voltage and current match. For a three phase power supply using a three phase input rectifier, the input current has a theoretical spectrum of 6n±1 where n is an integer incrementing from 1; this is known as a 6-pulse waveform. This means that a power supply with a three phase input rectifier will produce input currents at 1, 5, 7, 11, 13, 17, 19 ... times the fundamental frequency. The theoretical magnitude decays as the reciprocal of the harmonic component. The 5th and 7th harmonic components have magnitudes of 20% and 14% of the fundamental component, respectively. Harmonics currents in power systems can find unusual paths and can cause problems if the magnitude is significant and there are loads sensitive to harmonic frequencies. For example, lighting ballasts have series connected capacitors and inductors which can be excited by harmonic currents. IEEE has introduced standard, IEEE 519, which defines recommended limits. Implementing this standard requires a knowledge of the power system and other loads producing harmonics. Unfortunately, the standard can allow the same power supply to possibly exceed limits in one application and not in another. In the same respect, a power supply may or may not can cause a harmonic related problem with or without meeting IEEE 519. The best solution to minimize the risk of a harmonic problem is to eliminate the harmonic current at the source.
Front Panel - Standard
Front Panel - C Version
REM SEN: Remote sense enabled
INT CTL: Front panel start/stop/clear enabled
EXT CTL: External start/stop/clear enabled
ROTARY: Front panel rotary knob input
EXT PGM: External analog voltage-current control
REMOTE: Computer control
LOC: Interlock
PGL: External input voltage beyond limits
PHL: Under-voltage AC input
THL: Over-temperature condition
OVT: Over-voltage protection has tripped
OCT: Over-current protection has tripped
MENU: Selects function
ITEM: Selects item within function
V/I DIS: Displays voltage-current settings
TRIP DIS: Displays OVT and OCT setting
CLEAR: Clears settings or resets fault
ENTER: Select item
Model Ordering Guide
For both ordering and production, MT Series models are uniquely defined by several key characteristics, as defined by the following diagram:
MT Series Models
There are 49 different models in the MT Series spanning power levels: 150 kW, 250 kW, 500 kW, 750 kW, 1000 kW+. To determine the appropriate model:
- Select the desired Max Voltage (Vdc) from the left-most column.
- Select the desired Max Current (Adc) from the same row that contains your desired Max Voltage.
- Construct your model number according to the model ordering guide.
| 150 kW | 250 kW | 500 kW* | 750 kW* | 1000 kW* | |||
|---|---|---|---|---|---|---|---|
| Max Voltage (Vdc) | Max Current (Adc) | Ripple (mVrms) | Efficiency | ||||
| 32 | 4500 | N/A | N/A | N/A | N/A | 40 | 90% |
| 40 | 3750 | 6000 | 12000 | 18000 | 24000 | 40 | 91% |
| 50 | 3000 | 5000 | 10000 | 15000 | 20000 | 50 | 91% |
| 60 | 2500 | 4160 | 8320 | 12480 | 16640 | 60 | 91% |
| 80 | 1850 | 3000 | 6000 | 9000 | 12000 | 60 | 91% |
| 100 | 1500 | 2500 | 5000 | 7500 | 10000 | 60 | 91% |
| 125 | 1200 | 2000 | 4000 | 6000 | 8000 | 100 | 91% |
| 160 | 900 | 1500 | 3000 | 4500 | 6000 | 120 | 91% |
| 200 | 750 | 1250 | 2500 | 3750 | 5000 | 125 | 91% |
| 250 | 600 | 1000 | 2000 | 3000 | 4000 | 130 | 92% |
| 300 | 500 | 833 | 1666 | 2499 | 3332 | 160 | 92% |
| 375 | 400 | 660 | 1320 | 1980 | 2640 | 170 | 92% |
| 400 | 375 | 625 | 1250 | 1875 | 2500 | 180 | 92% |
| 500 | 300 | 500 | 1000 | 1500 | 2000 | 220 | 92% |
| 600 | 240 | 400 | 800 | 1200 | 1600 | 250 | 92% |
| 800 | 180 | 300 | 600 | 900 | 1200 | 300 | 92% |
| 1000 | 150 | 250 | 500 | 750 | 1000 | 400 | 92% |
| 1250 | 120 | 200 | 400 | 600 | 800 | 500 | 92% |
| 1600 | 90 | 150 | 300 | 450 | 600 | 600 | 92% |
| 2000 | 75 | 125 | 250 | 375 | 500 | 800 | 92% |
| 2500 | 60 | 100 | 200 | 300 | 400 | 900 | 92% |
| 3000 | 50 | 80 | 160 | 240 | 320 | 1000 | 92% |
| 4000 | 36 | 60 | 120 | 180 | 240 | 1100 | 92% |
| 5000 | 30 | 50 | 100 | 150 | 200 | 92% | |
| 6000 | 25 | 41.6 | 83.2 | 124.8 | 166.4 | 92% | |
| AC Input Voltage (Vac) | Input Current Per Phase (Aac) | ||||||
| 380/415 Vac, 3Φ | 276 | 440 | 880 | 1320 | 1760 | ||
| 440/480 Vac, 3Φ | 238 | 380 | 760 | 1140 | 1520 | ||
* Power levels marked with an asterisk are achieved through master-slave parallel of 250 kW models. Contact sales for more information or to inquire for systems as large as 4,000 kW+.
Specifications
The following specifications are subject to change without notice. Unless otherwise noted, all specifications measured at the product's maximum ratings.
| Specification | Value |
|---|---|
| 3Φ AC Input Voltage
Available on all models |
380/400 Vac (operating range 342 to 440 Vac) 415 Vac (operating range 373 to 456 Vac) 440 Vac (operating range 396 to 484 Vac) 480 Vac (operating range 432 to 528 Vac) |
| Input Frequency | 50 Hz to 60 Hz |
| Power Factor |
> 0.92 at maximum power, 100 kW and 150 kW models > 0.96 at maximum power, 250 kW models |
| AC Input Isolation | ±2500 Vdc, maximum input voltage to ground |
| Specification | Value |
|---|---|
| Voltage Ripple | Model specific. Refer to chart of available models. |
| Line Regulation |
Voltage mode: ± 0.004% of full scale Current mode: ± 0.02% of full scale |
| Load Regulation |
Voltage mode: ± 0.01% of full scale Current mode: ± 0.04% of full scale |
| Stability | ± 0.10% for 8 hrs. after 30 min. warm-up |
| Efficiency |
90% to 92% Model specific. Refer to chart of available models. |
| Maximum Slew Rate
Standard Models |
100 ms for an output voltage change from 0 to 63% 100 ms for an output current change from 0 to 63% |
| Maximum Slew Rate
Models with High Slew Rate Output (+HS) Option |
4 ms for an output voltage change from 0 to 63% 8 ms for an output current change from 0 to 63% |
| Bandwidth
Standard Models |
3 Hz with remote analog voltage programming 2 Hz with remote analog current programming |
| Bandwidth
Models with High Slew Rate Output (+HS) Option |
60 Hz with remote analog voltage programming 45 Hz with remote analog current programming |
| DC Output Isolation
Models Rated ≤1000 Vdc |
±1000 Vdc, maximum output voltage to ground |
| DC Output Isolation
Models Rated >1000 Vdc or Models with +ISO Option |
±6000 Vdc, maximum output voltage to ground |
| Specification | Value |
|---|---|
| Front Panel Programming | Stepless aluminum rotary knobs and keypad |
| Computer Interface |
RS232, D-sub DB-9, female (Standard) LXI TCP/IP Ethernet RJ45 (Option +LXI) IEEE-488 GPIB (Option +GPIB) |
| External User I/O Port |
37-pin D-sub DB-37, female Referenced to Earth ground; isolated from power supply output See User Manual for pin layout |
| Remote Sense Limits (Wired)
Available for models ≤ 1000 Vdc without High Isolation Output (+ISO) option |
3% maximum voltage drop from output to load |
| Specification | Value |
|---|---|
| Voltage Programming Accuracy | ± 0.075% of max rated voltage |
| Over Voltage Trip Programming Accuracy | ± 0.075% of max rated voltage |
| Current Programming Accuracy | ± 0.075% of max rated current |
| Over Current Trip Programming Accuracy | ± 0.075% of max rated current |
| Voltage Readback Accuracy | ± 0.2% of max rated voltage |
| Current Readback Accuracy | ± 0.2% of max rated current |
| Specification | Value |
|---|---|
| Analog Programming and Monitoring Levels | 0-10 Vdc |
| Analog Output Impedances |
Voltage output monitoring: 100 Ω Current output monitoring: 100 Ω +10V reference: 1 Ω |
| Digital Programming and Monitoring Limits |
Input: 0 to 5 Vdc, 10 kΩ input impedance Output: 0 to 5 Vdc, 5 mA drive capacity |
| Specification | Value |
|---|---|
| Size and Weight
100 kW Models |
Floor-standing double-bay 19" cabinet with casters 67" H x 48" W x 31.5" D (170.2 x 121.9 x 80.0 cm) 1600 lbs (725.8 kg) |
| Size and Weight
150 kW Models |
Floor-standing double-bay 19" cabinet with casters 67" H x 48" W x 31.5" D (170.2 x 121.9 x 80.0 cm) 2100 lbs (952.5 kg) |
| Size and Weight
250 kW Models |
Floor-standing triple-bay 19" cabinet with casters 67" H x 72" W x 31.5" D (170.2 x 182.9 x 80.0 cm) 3300 lbs (1496.9 kg) |
| Specification | Value |
|---|---|
| Ambient Operating Temperature | 0°C to 50°C |
| Storage Temperature | -25°C to +85°C |
| Humidity | Relative humidity up to 95% non-condensing |
| Temperature Coefficient |
0.04%/°C of maximum output voltage 0.06%/°C of maximum output current |
| Air Flow | Front and rear inlet, top exhaust |
| Specification | Value |
|---|---|
| EMC |
Complies with 2014/30/EU (EMC Directive) CISPR 22 / EN 55022 Class A |
| Safety | Complies with EN61010-1 and 2014/35/EU (Low Voltage Directive) |
| CE Mark | Yes |
| RoHS Compliant | Yes |
Dimensional Diagrams
The following are vectorized diagrams for the MT Series. Refer to the Downloads section for downloadable drawings.
Options and Accessories
The following are options and accessories developed specifically for Magna-Power's MT Series
Accessories
External accessories and integration services are available for Magna-Power products
BDx Module
1U blocking diode module covering a wide range of voltages and currents and providing necessary cooling, power supply controls interface, and remote sensing location.
DBx Module
High-performance add-on bringing ultra-high stability less than 10 ppm, up to 24-bit resolution, and up to 10x reduction in ripple.
DC Power Cables
DC power cables with wide range voltage ratings, current ratings, and termination options, made-to-order by Magna-Power
UID47: Universal Interface Device 47
Master-slave interface device for load sharing. Includes interface device and (2) D-Sub 37-pin cables with a braided shield.
Additional Accessories
RS485 Converter
Industrial RS232 to Addressable RS485 Converter. Plugs into product's RS232 port.
UID46: Universal Interface Device 46
Master-slave interface device for load sharing. Includes interface device and (2) D-Sub 37 cables.
USB Edgeport Converter
Industrial Plug and Play USB to RS232 Converter. Adapter plugs into product's RS232 port.
Integrated Options
Standard integrated options are available for Magna-Power products, allowing the product's performance and communication interfaces to be tailors to the specific application.
High Isolation Output
Option Code: +ISO
Availability:
Available for models rated for 250 Vdc to 1000 Vdc, the +ISO option greatly increases the output isolation, used when the application demands floating or tying units in series beyond the standard ±1000 Vdc output isolation rating.
High Slew Rate Output
Option Code: +HS
Availability:
A hardware and control modification that replaces the standard output stage with one of low capacitance film and/or high RMS current rated aluminum electrolytic capacitors. This option provides higher bandwidth with faster output rise and fall times.
IEEE-488 GPIB
Option Code: +GPIB
Availability:
IEEE-488 General Purpose Interface Bus (GPIB) communication interface providing full command support and compatibility with other GPIB devices
Integrated Blocking Diode
Option Code: +BD
Availability:
An internally heatsinked protection diode on the positive output terminal of a MagnaDC programmable DC power supply to protect the product's output from reverse voltages far exceeding the product's output voltage rating.
LXI TCP/IP Ethernet
Option Code: +LXI
Availability:
TCP/IP Ethernet communication protocol and single RJ-45 interface, certified to the LXI Class C standard, for socket communications using conventional computer networks
Downloads
The following downloads are for the Série MT: