What is Static Voltage Stabilizer ?

A Static Voltage Stabilizer, as the name suggests, is a type of voltage stabilizer that operates without the need for mechanical components like motors, carbon arms, or brushes for voltage regulation.

Instead, it utilizes a solid-state configuration with high frequency IGBT units and Pulse Width Modulation control to deliver a consistently smooth and stable output voltage, even in challenging voltage fluctuations.

Static voltage stabilizer functions silently and requires no maintenance due to absence of any moving parts for voltage adjustment.

Static Voltage Stabilizer Vs Servo Voltage Stabilizer

The key difference between a servo stabilizer and a static stabilizer is in their voltage regulation mechanisms. A servo stabilizer employs mechanical servo motors and moving parts such as carbon arms and brushes for voltage correction, whereas a static stabilizer has a solid-state setup that consists of IGBT units and Pulse Width Modulation technology which provides highly stable output voltage super quickly.

Unlike servo stabilizers its operation is completely noiseless and is absolutely maintenance free as no moving parts are used for voltage correction.

The table below outlines the key distinctions between a servo stabilizer and a static stabilizer.

ASPECT	STATIC STABILIZER	SERVO STABILIZER
Input Voltage	Customized as per requirement	Standard specification - customization is expensive
Output Voltage	Customized as per requirement	Standard specification - customization is expensive
Cooling	Air Cooled	Oil cooled/air cooled
Rate of Correction	4,000 v/sec.	70 v/sec.
Response Time	50 micro sec.	10 mili sec.
Max Efficiency	>98%	90-95%
Short Time Overload	400% for 500 msec.	200% for 2 sec.
Effect of Spikes & Surges	No spikes/surges are either generated or transmitted to output	Spikes/surges are likely to be generated or transmitted to output
Effect of Fluctuation	No voltage fluctuations are transmitted to output as response time is fast & no mechanical switching	Fluctuations may be transmitted to output due to mechanical switching
Maintenance	No moving part and hence no maintenance	Considerable maintenance of servo motor & other moving parts required
Buck Boost Transformer	Class-H insulation (works upto 175 deg.)	Insulation with lower class - cannot handle high inner temperature inside cabinet
Control Circuit	High Frequency PWM controlled IGBT	Low frequency operation - Solid State sensing & feedback through control circuit to operate electromagnetic relays for operating motors
Size Per Watt	Small foot print & very compact	Large Size
Protections	Over load, over voltage, under voltage, single phase out. phase reversal, phase unbalance, thermal protection etc.	Technology constraints - some of the protections are not possible
System Noise	Noise free	High noise during operation

Static Voltage Stabilizer Working Principle

Static Voltage Stabilizer works on the closed feedback loop arrangement. Voltage regulation process is commanded and executed by a feedback control system using digital signal processor (DSP).

The input voltage is sensed by the DSP and corrections are made by varying the duty cycle of Pulse Width Modulation (PWM). The required voltage is boosted or bucked from the mains through high frequency IGBT units which operate at 20 KHz frequency.

Is Static Voltage Stabilizer noisy during operation and distorts the output waveform?

No. Because the voltage regulation is done electronically without any step changing, static stabilizer is absolutely silent even during severe voltage fluctuations and delivers pure sinewave output.

Can we use static voltage stabilizer for home?

Certainly! As a mainline voltage stabilizer it is an extremely cost effective solution to voltage fluctuation woes as no further individual stabilizers are needed to safeguard expensive home appliances.

What is Static Voltage Stabilizer Price in India?

Prices depend on the capacity and input voltage range required.

Static Voltage Stabilizer / Static Voltage Regulator uses

Because of its high precision, super quick regulation and inbuilt circuit protections, it is best suitable but not limited to:

CNC machines
VMC machines
PLC controlled machines
Injection moulding machine (injection press)
Elevators/lifts
Medical Instruments
Analytical & Scientific Instruments
Calibrations Instruments

Why to use Static Voltage Stabilizer Instead of Other Automatic Voltage Regulators?

Capable of handling wide range of input voltage, thereby reducing DG operation during low/high input range
Reduced DG operation means, savings in fuel consumption (Study made at Northern Railway stations)
Improved quality of output voltage to equipments, tending to energy saving and lowering electricity bill
Since no mechanical or moving parts hence, negligible maintenance cost
Independent phase correction and capable to handle unbalanced 3-phase input without any trouble
Provides stable & balanced input voltage to enhance equipment’s operating life
Because of slow response time servo-motor based or tap-switching stabilizers are not suitable for sensitive load equipment having high speed solid-state devices and drives
High speed correction of Low/High voltage fluctuations
Static Stabilizer won’t pass voltage fluctuations to appliances
Surge protection for connected load
Cycle by cycle voltage regulation without interrupting the load current